Ricoh B273 DSm520pf Multifunction Printers Service Manual

B273

SERVICE MANUAL

002544MIU

B273

SERVICE MANUAL

002544MIU

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NO PART OF THIS DOCUMENT MAY BE REPRODUCED IN ANY

FASHION AND DISTRIBUTED WITHOUT THE PRIOR

PERMISSION OF RICOH CORPORATION.

All product names, domain names or product illustrations, including desktop images, used in this document are trademarks, registered trademarks or the property of their respective companies.

They are used throughout this book in an informational or editorial fashion only and for the benefit of such companies. No such use, or the use of any trade name, or web site is intended to convey endorsement or other affiliation with Ricoh products.

 2005 RICOH Corporation. All rights reserved.

WARNING

The Service Manual contains information regarding service techniques, procedures, processes and spare parts of office equipment distributed by Ricoh Corporation. Users of this manual should be either service trained or certified by successfully completing a Ricoh

Technical Training Program.

Untrained and uncertified users utilizing information contained in this service manual to repair or modify Ricoh equipment risk personal injury, damage to property or loss of warranty protection.

Ricoh Corporation

PRODUCT CODE

LEGEND

COMPANY

GESTETNER LANIER RICOH SAVIN

DOCUMENTATION HISTORY

REV. NO.

*

DATE COMMENTS

09/2005 Original Printing

B273

TABLE OF CONTENTS

INSTALLATION

1. INSTALLATION............................................................................ 1-1

PREVENTIVE MAINTENANCE

2. PREVENTIVE MAINTENANCE.................................................... 2-1

2.1 PM INTERVALS ........................................................................................2-1

REPLACEMENT AND ADJUSTMENT

3. REPLACEMENT AND ADJUSTMENT ........................................ 3-1

3.1 GENERAL PRECAUTIONS.......................................................................3-1

3.1.1 SERVICING THE MACHINE ............................................................3-1

3.1.2 RELEASING PLASTIC LATCHES....................................................3-1

3.2 COVERS ...................................................................................................3-2

3.2.1 REAR COVER..................................................................................3-2

3.2.2 SIDE COVERS .................................................................................3-3

Right Cover...........................................................................................3-3

Left Cover .............................................................................................3-4

3.2.3 FRONT COVER................................................................................3-5

3.3 SCANNER ASSEMBLY.............................................................................3-6

3.3.1 REASSEMBLING THE SCANNER ASSEMBLY ............................3-14

3.4 ADF MOTOR ASSEMBLY.......................................................................3-15

3.5 OPERATION PANEL...............................................................................3-18

3.6 MIDDLE COVER AND EXIT ROLLER ....................................................3-20

3.7 CONTROLLER SHIELD ASSEMBLY......................................................3-22

3.8 ENGINE SHIELD ASSEMBLY AND EXIT BOARD .................................3-24

3.8.1 ENGINE SHIELD ............................................................................3-24

3.8.2 EXIT BOARD..................................................................................3-26

3.9 SMPS AND LIU .......................................................................................3-27

3.10 FUSING UNIT........................................................................................3-29

3.10.1 FUSING UNIT ASSEMBLY ..........................................................3-29

3.10.2 THERMOSTAT.............................................................................3-30

3.10.3 FUSING LAMP .............................................................................3-30

3.10.4 STRIPPER PAWLS ......................................................................3-31

Reassembling the Fusing Unit ............................................................3-32

Note. ...................................................................................................3-33

3.10.5 THERMISTOR..............................................................................3-34

3.11 FAN .......................................................................................................3-35

3.12 LSU .......................................................................................................3-36

SM i B273

3.13 CRUM BOARD ......................................................................................3-37

3.14 DRIVE ASSEMBLY ...............................................................................3-38

3.15 COVER MID-FRONT.............................................................................3-39

3.16 TRANSFER ASSEMBLY .......................................................................3-40

3.17 FEED ASSEMBLY.................................................................................3-42

3.18 PICK-UP ASSEMBLY AND SOLENOID................................................3-45

3.18.1 PICK-UP ASSEMBLY...................................................................3-45

3.18.2 SOLENOID ...................................................................................3-46

3.18.3 BY-PASS PICK-UP ROLLER AND PAPER FEED

UNIT PICK-UP ROLLER. .............................................................3-47

By-pass pick-up roller .........................................................................3-47

Paper Feed Unit Pick-up Roller ..........................................................3-48

TROUBLESHOOTING

4. TROUBLESHOOTING ................................................................. 4-1

4.1 PAPER PATH............................................................................................4-1

4.1.1 COPY/SCAN DOCUMENT PATH ....................................................4-2

Scanner ................................................................................................4-2

Engine...................................................................................................4-3

4.1.2 PRINTER PAPER PATH ..................................................................4-4

4.2 PAPER JAM CONDITIONS.......................................................................4-5

Jam0 (Paper Feed Area) Jam1 (Fusing/Toner Cartridge)................4-5

Jam2 (Paper Exit Area) By-pass Jam (By-pass Tray).......................4-5

4.2.1 CLEARING DOCUMENT JAMS (ADF).............................................4-6

ADF Input Misfeed ................................................................................4-6

ADF Exit Misfeed ..................................................................................4-7

ADF Roller Misfeed...............................................................................4-7

4.2.2 JAM0 (PAPER FEED AREA)............................................................4-8

4.2.3 JAM1 (FUSING AREA OR AROUND THE TONER

CARTRIDGE AREA).........................................................................4-9

4.2.4 JAM2 (PAPER EXIT AREA) ...........................................................4-10

4.2.5 BY-PASS TRAY JAM .....................................................................4-11

4.3 PAPER FEED PROBLEMS .....................................................................4-12

4.3.1 INCORRECT PRINT POSITION ....................................................4-12

4.3.2 JAM 0 .............................................................................................4-12

4.3.3 JAM 1 .............................................................................................4-13

4.3.4 JAM 2 .............................................................................................4-13

4.3.5 MULTI-FEEDING............................................................................4-14

4.3.6 PAPER IN THE FUSING UNIT.......................................................4-14

4.3.7 PAPER BECOMES ROLLED AROUND THE OPC DRUM ............4-15

4.3.8 DEFECTIVE ADF ...........................................................................4-15

4.4 MACHINE MALFUNCTIONS...................................................................4-16

4.4.1 LCD DISPLAY DEFECTIVE ...........................................................4-16

4.4.2 DEFECTIVE CONTROL PANEL ....................................................4-16

4.4.3 FUSING GEAR MELTS (OVERHEATS).........................................4-16

4.4.4 PAPER EMPTY 1 ...........................................................................4-17

4.4.5 PAPER EMPTY 2 ...........................................................................4-17

B273 ii SM

4.4.6 COVER OPEN 1.............................................................................4-17

4.4.7 COVER OPEN 2.............................................................................4-18

4.4.8 DEFECTIVE MOTOR OPERATION ...............................................4-18

4.4.9 NO POWER....................................................................................4-18

4.4.10 PRINTED VERTICAL LINES ARE CURVED................................4-19

4.5 PRINTING QUALITY PROBLEMS ..........................................................4-20

4.5.1 INCORRECT PRINT POSITION ....................................................4-20

4.5.2 VERTICAL WHITE LINE.................................................................4-20

4.5.3 HORIZONTAL BLACK BANDS ......................................................4-21

4.5.4 BLACK/WHITE SPOTS ..................................................................4-21

4.5.5 LIGHT IMAGE ................................................................................4-22

4.5.6 DARK/BLACK IMAGE ....................................................................4-22

4.5.7 UNEVEN DENSITY ........................................................................4-23

4.5.8 BACKGROUND ..............................................................................4-23

4.5.9 GHOST 1........................................................................................4-24

4.5.10 GHOST 2......................................................................................4-24

4.5.11 GHOST 3......................................................................................4-25

4.5.12 GHOST 4......................................................................................4-25

4.5.13 MARKS ON FRONT OF PAGE ....................................................4-26

4.5.14 MARKS ON BACK OF PAGE.......................................................4-26

4.5.15 BLANK PAGE 1............................................................................4-27

4.5.16 BLANK PAGE 2............................................................................4-27

4.6 FAX AND PHONE PROBLEMS ..............................................................4-28

4.6.1 NO DIAL TONE ..............................................................................4-28

4.6.2 DEFECTIVE MF DIAL ....................................................................4-28

4.6.3 DEFECTIVE FAX FORWARD/RECEIVE .......................................4-29

4.6.4 DEFECTIVE FAX FORWARD ........................................................4-29

4.6.5 DEFECTIVE FAX RECEIVE 1........................................................4-29




4.6.9 DEFECTIVE AUTOMATIC RECEIVING.........................................4-30

4.7 COPY PROBLEMS .................................................................................4-31

4.7.1 WHITE COPY.................................................................................4-31

4.7.2 BLACK COPY.................................................................................4-31

4.7.3 UNUSUAL NOISE ..........................................................................4-31

4.7.4 DEFECTIVE IMAGE QUALITY.......................................................4-31

4.8 SCANNING PROBLEMS.........................................................................4-32

4.8.1 PC SCANNING PROBLEMS..........................................................4-32

4.8.2 POOR QUALITY OF SCANNED IMAGES .....................................4-32

4.9 ERROR MESSAGES ..............................................................................4-33

4.10 TONER CARTRIDGE............................................................................4-36

4.10.1 TONER CARTRIDGE PRECAUTIONS ........................................4-36

4.10.2 REDISTRIBUTING TONER..........................................................4-37

4.10.3 TONER CARTRIDGE ERROR MESSAGES ................................4-38

4.10.4 TONER CARTRIDE DETAILS......................................................4-39

4.11 SOFTWARE PROBLEMS .....................................................................4-43

4.11.1 PRINTER DOES NOT OPERATE CORRECTLY 1 ......................4-43

4.11.2 PRINTER DOES NOT OPERATE CORRECTLY 2 ......................4-44

SM iii B273

4.11.3 ABNORMAL PRINTING ...............................................................4-45

4.11.4 SPOOL ERROR ...........................................................................4-45

How to Delete Data in the Spool Manager..........................................4-45

4.12 NETWORK PROBLEMS .......................................................................4-46

4.12.1 GENERAL PROBLEMS................................................................4-46

4.12.2 WINDOWS PROBLEMS...............................................................4-47

4.12.3 SYNCTHRU INSTALLATION PROBLEMS ..................................4-48

SERVICE PROGRAM MODE

5. SERVICE PROGRAM MODE....................................................... 5-1

5.1 TECH MODE .............................................................................................5-1

5.1.1 HOW TO ENTER TECH AND EXIT MODE......................................5-1

What you can do in Tech Mode ............................................................5-1

5.1.2 DATA SET-UP..................................................................................5-2

Send Level............................................................................................5-2

Dial Mode..............................................................................................5-2

Modem Speed ......................................................................................5-2

Error Rate .............................................................................................5-2

Notify Toner ..........................................................................................5-2

CLEAR ALL MEMORY .........................................................................5-3

Flash Upgrade ......................................................................................5-3

Silence Time .........................................................................................5-3

5.1.3 MACHINE TESTS.............................................................................5-4

Switch Test ...........................................................................................5-4

Modem Test..........................................................................................5-4

DRAM Test ...........................................................................................5-4

ROM Test .............................................................................................5-4

Pattern Test ..........................................................................................5-4

Shading Test.........................................................................................5-5

5.1.4 REPORTS ........................................................................................5-5

Protocol List ..........................................................................................5-5

System Data .........................................................................................5-5

5.2 USER MODE.............................................................................................5-6

5.3 FIRMWARE DOWNLOAD .........................................................................5-8

5.3.1 DOWNLOAD PROCEDURE.............................................................5-8

Printer Setting Utility Mode ...................................................................5-8

Web Image Monitor Mode.....................................................................5-9

5.3.2 FIRMWARE RECOVERY PROCEDURE .......................................5-11

5.4 ENGINE TEST MODE.............................................................................5-12

5.4.1 HOW TO ENTER ENGINE TEST MODE .......................................5-12

5.4.2 ENGINE TEST MODE TABLE........................................................5-13

Detailed Description (Engine Test Mode) ...........................................5-14

5.4.3 STATUS PRINT..............................................................................5-15

B273 iv SM

DETAILED DESCRIPTIONS

6. DETAILED DESCRIPTIONS ........................................................ 6-1

6.1 PRINTER COMPONENT LAYOUT ...........................................................6-1

6.1.1 FRONT VIEW ...................................................................................6-1

6.1.2 REAR VIEW .....................................................................................6-2

6.2 SYSTEM LAYOUT ....................................................................................6-3

6.2.1 PAPER FEED...................................................................................6-3

6.2.2 TRANSFER ASSEMBLY ..................................................................6-3

6.2.3 DRIVE ASSEMBLY ..........................................................................6-3

6.2.4 FUSING ASSEMBLY........................................................................6-4

Thermostat............................................................................................6-4

Thermistor.............................................................................................6-4

Hot Roller..............................................................................................6-4

Pressure Roller .....................................................................................6-4

Safety Features ....................................................................................6-4

Safety Devices......................................................................................6-4

6.2.5 SCANNING UNIT .............................................................................6-5

CCD Module Specifications ..................................................................6-5

6.2.6 LASER SCANNING UNIT (LSU) ......................................................6-5

6.2.7 TONER CARTRIDGE .......................................................................6-6

6.2.8 NEW AIO DETECTION ....................................................................6-7

6.2.9 TONER END DETECTION...............................................................6-7

6.3 CONTROLLER ..........................................................................................6-8

6.3.1 MAIN PBA ........................................................................................6-8

6.3.2 ASIC .................................................................................................6-9

Main Function Block..............................................................................6-9

6.3.3 MEMORY .........................................................................................6-9

6.3.4 FLASH MEMORY .............................................................................6-9

6.3.5 SDRAM.............................................................................................6-9

6.3.6 BATTERY BACKUP .........................................................................6-9

6.3.7 SENSOR INPUT CIRCUIT .............................................................6-10

Paper Empty Sensor...........................................................................6-10

By-pass Tray Sensor ..........................................................................6-10

Paper Feed Sensor.............................................................................6-10

Paper Exit Sensor ...............................................................................6-10

Cover Open Sensor ............................................................................6-10

DC Fan/Solenoid Driving ....................................................................6-10

Motor Driving ......................................................................................6-10

6.4 SMPS AND HVPS ...................................................................................6-11

6.4.1 HVPS..............................................................................................6-12

Transfer High Voltage (THV+) ............................................................6-12

Charge Voltage (MHV)........................................................................6-12

Cleaning Voltage (THV-).....................................................................6-12

Developing Voltage (DEV) ..................................................................6-12

Supply Voltage (SUP) .........................................................................6-13

OPC Ground ZENER Voltage.............................................................6-13

6.4.2 SMPS(SWITCHING MODE POWER SUPPLY) .............................6-14

SM v B273

1. AC Input............................................................................................6-14

2. Rated Output Power .........................................................................6-14

3. Power Consumption .........................................................................6-14

4. Length of Power cord........................................................................6-15

5. Power Switch:...................................................................................6-15

6. Feature .............................................................................................6-15

7. Environment Condition .....................................................................6-15

8. EMI Requirement..............................................................................6-15

9. Safety Requirement ..........................................................................6-15

6.4.3 FUSING UNIT AC POWER CONTROL..........................................6-16

6.5 ENGINE...................................................................................................6-17

6.5.1 PAPER FEED.................................................................................6-17

Jam0 (feed area).................................................................................6-17

Jam1 (inside the machine)..................................................................6-17

Jam2 (exit area)..................................................................................6-17

6.5.2 DRIVE.............................................................................................6-18

6.5.3 TRANSFER ....................................................................................6-18

6.5.4 FUSING ..........................................................................................6-18

6.5.5 LASER SCANNING UNIT...............................................................6-19

6.6 OPERATION PANEL (OPE)....................................................................6-19

6.7 USB HOST ..............................................................................................6-20

6.8 FAX SECTION.........................................................................................6-20

6.8.1 MODEM..........................................................................................6-20

6.8.2 LIU PBA..........................................................................................6-20

SPECIFICATIONS

SPECIFICATIONS............................................................................. 7-1

1. GENERAL SPECIFICATIONS.....................................................................7-1

2. PHYSICAL SPECIFICATIONS ....................................................................7-2

3. PRINT SPECIFICATIONS...........................................................................7-2

4. SCAN SPECIFICATIONS............................................................................7-3

5. COPY SPECIFICATIONS ...........................................................................7-4

6. TELEPHONE SPECIFICATIONS ................................................................7-5

7. FAX SPECIFICATIONS...............................................................................7-6

8. SOFTWARE SPECIFICATIONS .................................................................7-7

9. PAPER SIZES/WEIGHTS ...........................................................................7-7

APPENDIX

BLOCK DIAGRAM ............................................................................ 8-1

CONNECTION DIAGRAM................................................................. 8-2

B273 vi SM

PRECAUTIONS

In order to prevent accidents and damage to the equipment, please read the following precautions before you service the machine.

SAFETY WARNING

1. Only qualified service engineers should service this machine. High voltages and lasers inside this product should be approached with caution.

2. Use only approved replacement parts There are no user serviceable parts inside this machine. Do not make any unauthorized changes or additions to the machine. This could cause the machine to malfunction, and create electric shock or fire hazards.

3. Laser Safety Statement: This machine is certified in the U.S. to conform to the requirements of DHHS 21 CFR, chapter 1 Subchapter J for Class 1(1) laser products and elsewhere. It is certified as a Class I laser product conforming to the requirements of IEC 825. Class I laser products are not considered to be hazardous. The laser system and printer are designed to prevent access to laser radiation during normal operation, user maintenance, or prescribed service activities.

Never operate or service the printer with the protective cover removed from

Laser/Scanner assembly. The reflected beam can damage your eyes.

When using this product, these basic safety precautions should always be followed to reduce risk of fire, electric shock, and injury to persons.



WARNING

SAFETY PRECAUTIONS

TOXIC MATERIALS

This product contains toxic materials that could cause illness if ingested.

1. If the LCD control panel is damaged, it is possible for the liquid inside to leak out. This liquid is toxic and contact with skin should be avoided. Wash any splashes from eyes or skin immediately for 15 minutes under running water, and contact a doctor. See a doctor immediately if the liquid gets into the mouth or is swallowed.

2. Keep toner cartridges away from children. The toner powder contained in the toner cartridge may be harmful if swallowed. Contact a doctor immediately if toner powder is swallowed.

ELECTRIC SHOCK AND FIRE SAFETY PRECAUTIONS

Failure to adhere to the following instructions could cause electric shock or cause a fire.

1. Use only the specified voltage to power this machine. Failure to do so could damage the machine and cause a fire or electric shock.

2. Use only the power cable supplied with this machine. Use of an incorrectly specified cable could cause the cable to overheat and potentially cause a fire.

3. Do not overload the power socket. This could lead to overheating of the cables inside the wall and could lead to a fire.

4. Do not allow water or other liquids to spill into the machine. This can cause electric shock. Do not let paper clips, pins, or other foreign objects fall into the machine. These could cause a short circuit leading to an electric shock or fire hazard. If foreign objects fall into the machine, power off the machine and disconnect the power cord from the wall outlet immediately.

5. Never touch the plugs on either end of the power cable with wet hands. This can cause electric shock.

6. Remove the power plug from the wall socket when servicing the printer.

7. Use caution when you insert or remove the power plug. The power plug must be inserted completely. Otherwise, a poor contact could cause overheating and lead to a fire. (When removing the power plug, grip the plug firmly and pull.)

8. Do not allow the power cable to become twisted or bent sharply around corners. Do not place objects on top of the power cable. If the power cable is damaged, it could overheat and cause a fire. Exposed cables could cause an electric shock. Replace a damaged power cable immediately. Do not reuse or repair a damaged cable. Additionally, some chemicals can attack the coating on the power cable, weakening the cover or exposing cables causing fire and shock risks.

9. Ensure that the power sockets and plugs are not cracked or broken in any way.

Repair such defects immediately. Take care not to cut or damage the power cable or plugs when moving the machine.

10. Use caution during thunder or lightening storms. Disconnect the machine from

the power source when such weather conditions are expected. Do not touch the machine or the power cord if it is still connected to the wall socket in these weather conditions.

11. Avoid damp or dusty areas. Install the machine in a clean, well-ventilated location. Do not position the machine near a humidifier. Dampness and dust build-up inside the machine can lead to overheating and cause a fire.

12. Do not position the machine in direct sunlight. This will cause the temperature inside the machine to rise, possibly leading to machine failure and, in extreme conditions, could lead to a fire.

13. Do not insert metal objects into the machine through the ventilator fan or other part of the casing. This could create contact with a high voltage conductor inside the machine and cause an electric shock.

HANDLING PRECAUTIONS

The following instructions are for your own personal safety, to avoid injury and to prevent damage to the machine.

1. Ensure that the machine is installed on a level surface, capable of supporting its weight. Failure to do so could cause the machine to tip or fall.

2. Avoid placing fingers or hair in close proximity to any rollers, gears, or fans within this machine while the machine is in operation.

3. Do not place any small metal objects, containers of water, chemicals, or other liquids close to the machine. This can cause damage, shock, or fire if spilled into the machine.

4. Do not install the machine in areas with high dust or moisture levels, beside open windows, or close to a humidifier or heater.

5. Do not place candles, burning cigarettes, etc. on the machine. A fire may occur.

ASSEMBLY/DISASSEMBLY PRECAUTIONS

Replace with approved replacement parts only. Take care to note the exact location of components and correct cable routing before you disassemble any part of the machine. Ensure all parts and cables are replaced correctly. Perform the following procedures before you disassemble the machine or replace any parts:

1. Check the contents of the machine memory and make a note of any user settings. These will be erased if the main board or network card is replaced.

2. Ensure that power is disconnected before you service or replace any electrical parts.

3. Disconnect interface cables and power cables.

CAUTION1.TIF

4. Use only approved spare parts.

Ensure that part number, product name, voltages, current and/or temperature rating are correct.

5. When removing or re-fitting any parts, do not use excessive force

(especially when fitting screws into plastic).

6. Take care not to drop any small parts into the machine.

7. Handling of the OPC Drum:

• The OPC Drum can be damaged if it is exposed to light.

• Take care not to expose the

OPC Drum to direct sunlight, fluorescent, or incandescent

Caution2.tif lighting. Exposure for as little as 5 minutes can damage the surface’s photoconductive properties and will result in print quality degradation.

Remove the OPC Drum and store it in a black bag or other lightproof container. Take care when working with the covers (especially the top cover), as light can be admitted to the OPC area and can damage the OPC Drum.

• Take care not to scratch the green surface of OPC Drum. If the green surface of the OPC Drum is scratched or touched, the print quality will be compromised.

ESD PRECAUTIONS

Certain semiconductor devices can be easily damaged by static electricity. Such components are commonly called “Electro-statically Sensitive (ES) Devices”, or

ESDs. Examples of typical ESDs are: integrated circuits, some field-effect transistors, and semiconductor “chip” components.

The techniques outlined below should be followed to help reduce the incidence of component damage caused by static electricity.



CAUTION

Ensure that no power is applied to the chassis or circuit, and observe all other safety precautions.

1. Immediately before handling a semiconductor component or semiconductorequipped assembly, drain any electrostatic charge on your body by touching a known earth ground. Alternatively, employ a commercially available wrist strap device, which for your personal safety should be removed prior to applying power to the unit under test.

2. After removing an electrical assembly equipped with ESDs, place the assembly on a conductive surface, such as aluminum or copper foil, or conductive foam, to prevent electrostatic charge buildup in the vicinity of the assembly.

3. Use only a grounded-tip soldering iron to solder or desolder ESDs.

4. Use only an “anti-static” solder removal device. Some solder removal devices not classified as “anti-static” can generate electrical charges sufficient to damage ESDs.

5. Do not use Freon-propelled chemicals. When sprayed, these can generate electrical charges sufficient to damage ESDs.

6. Do not remove a replacement ESD from its protective packaging until immediately before installing it. Most replacement ESDs are packaged with all leads shorted together by conductive foam, aluminum foil, or a comparable conductive material.

7. Immediately before removing the protective material from the leads of a replacement ESD, touch the protective material to the chassis or circuit assembly into which the device will be installed.

8. Maintain continuous electrical contact between the ESD and the assembly into which it will be installed, until the ESD or assembly is completely plugged or soldered into the circuit.

9. Minimize bodily motions when handling unpackaged replacement ESDs.

Normal motions, such as the brushing together of clothing fabric and lifting one’s foot from a carpeted floor, can generate static electricity sufficient to damage an ESD.

INSTALLATION



TROUBLESHOOTING



SPECIFICATIONS

APPENDIX

INSTALLATION

1. INSTALLATION

Refer to the Operating Instructions for Installation procedures.

INSTALLATION

SM 1-1 B273


PM INTERVALS

2.1 PM INTERVALS

The intervals shown below are for maintenance.

Environmental conditions and machine use will affect these intervals. Adjust maintenance activities accordingly.

NOTE: The intervals shown below are for reference only. It is expected that the

intervals indicated below will exceed machine life. However, if the indicated interval is reached, replace the component.

Scanner

Printer

ADF Rubber Pad

ADF Pick-up Ass’y

Pick-up Ass’y

Transfer Roller

Fusing Unit

20,000 Pages

80,000 Pages

150,000 pages

60,000 Pages

80,000 Pages

Service

Service

Service

Service

Service

SM 2-1 B273


3. REPLACEMENT AND ADJUSTMENT

This manual uses the following symbols

: See or refer to

 : Screw : Connector

3.1 GENERAL PRECAUTIONS

• Use caution when disassembling and reassembling components.

• Ensure that all cables are correctly routed. Verify the correct cable routing before you begin service on the machine. Return all cables to their original position after you service the machine.

3.1.1 SERVICING THE MACHINE

1. Ensure there are no documents stored in memory before you service the machine.

2. Remove the toner cartridge before you disassemble parts.

3. Unplug the power cord before you service the machine.

4. Use a flat clean surface to service the machine.

5. Use only approved replacement parts. Machine function cannot be guaranteed if unauthorized replacement parts are used.

6. Do not force plastic components.

7. Ensure that all components are in their correct positions.

3.1.2 RELEASING PLASTIC LATCHES

Many of the machine assemblies and parts are held in place with plastic latches. The latches break easily.

Release them carefully. To remove these assemblies and parts, use gentle to moderate force to press the hook end of the latch away from the area to which it is latched

.

B273R901.WMF

SM 3-1 B273

COVERS

3.2 COVERS

3.2.1 REAR COVER

[A]

B273R903.WMF

B273R902.WMF

1. Remove 4 x  securing the rear cover [A]. Remove the rear cover from the frame assembly.

[B]

B273R904.WMF

2. Unhook the face cover [B] from the rear cover as shown above. Lift the face cover out.

B273 3-2 SM

3.2.2 SIDE COVERS

Remove the following before removing the side covers:

Rear cover 3.2.1

NOTE: Remove the paper tray unit before removing the side covers.

Right Cover

COVERS

[B]

[A]

B273R905.WMF

1. Open the front cover and remove 2 x  on the front, and 1 x  on the back.

2. Release 3 x clips [A] underneath the cover.

3. Ease the rear screw bracket over its location pin and gently slide the right cover

[B] to the right.

4. Remove the right cover from the frame.

SM 3-3 B273

COVERS

Left Cover

[B]

[A]

B273R906.WMF

1. Release 3 x clips [A] underneath the cover.

2. Ease the rear screw bracket over its location pin and gently slide the left cover

[B] to the right.

3. Remove the left cover from the frame.

B273 3-4 SM

3.2.3 FRONT COVER

COVERS

[A] [B]

B273R907.WMF

1. Open the front cover [A] and remove the toner cartridge [B].

B273R908.WMF

[A]

B273R909.WMF

2. Unhook the front cover [A] from the frame assembly. Remove the front cover as shown above.

SM 3-5 B273

SCANNER ASSEMBLY

3.3 SCANNER ASSEMBLY

Remove the following before removing the ADF motor assembly:

Rear cover 3.2.1

Side covers 3.2.2

1. Remove 2 x  from the scanner assembly, as shown.

[B]

2. Remove 5 x  [A], as shown.

3. Remove the ground wire screw

[B].

[A]

B273R910.WMF

B273R911.WMF

B273 3-6 SM

[C]

4. Lift up the scanner assembly, as shown above.

5. Lift and remove the platen cover [D], as shown.

3

B273R912.WMF

[D]

2

1

B273R913.WMF

SM 3-7 B273

SCANNER ASSEMBLY

[E]

B273R914.WMF

6. Free the scanner cable harness [E] from the clips [F] underneath the scanner.

Remove it from the frame.

[F]

[G]

B273R915.WMF

7. Lift the front part of the OPE front cover [G] to release it from the hooks connecting it to the scanning assembly. Remove the OPE front cover.

B273 3-8 SM

[I]

[H]

B273R916.WMF

8. Release the 3 x clips [H] on the front of the OPE unit [I]. Then remove the OPE as shown.

NOTE: Ensure that the harness is threaded through the frame.

[J]

B273R917.WMF

9. Remove 4 x  securing the upper part [J] of the scanning unit.

10. Unclip 2 x clip securing the upper part of the scanning unit from the scanner assembly. Lift the upper part of the scanning unit upward and remove it.

SM 3-9 B273

SCANNER ASSEMBLY

[K]

11. Remove the CCD cable [K], as shown above.

[M]

[L]

B273R918.WMF

B273R919.WMF

12. Pull up the CCD shaft [L] and remove the scanner module [M].

B273 3-10 SM

[N]

[O]

B273R920.WMF

13. Squeeze the spring [N] to relieve tension on the belt [O]. Lift the belt away from the pulleys as shown.

[P]

[Q]

[R]

B273R921.WMF

14. Remove the reduction gear [P] and idle gear [Q], as shown.

15. Remove 3 x  and remove the motor bracket [R].

SM 3-11 B273

SCANNER ASSEMBLY

[S]

16. Unplug the connector from the open sensor assembly [S].

B273R922.WMF

Open Sensor

[T]

17. Unlatch the cover open sensor [T] and remove it.

B273R980.WMF

B273 3-12 SM

Lock

Unlock

18. Remove the CCD lock [U].

[U]

B273R923.WMF

SM 3-13 B273

SCANNER ASSEMBLY

3.3.1 REASSEMBLING THE SCANNER ASSEMBLY

[A]

B273R924.WMF

Ensure that the tension spring [A] is as close to the right-hand side of the scanner assembly as possible when reassembling the scanner module, belt, and belt spring.

B273 3-14 SM

ADF MOTOR ASSEMBLY

3.4 ADF MOTOR ASSEMBLY

Remove the following before removing the ADF motor assembly:

Rear cover 3.2.1

Side covers .3.2.2

Scanner assembly 3.3

[A]

[B]

B273R925.WMF

1. Unclip the harness [A] from the platen cover.

2. Remove the 2 x  securing the ADF assembly and remove it. (Ensure that the harness is threaded through the frames).

[C]

B273R926.WMF

3. Remove the cover [C] as shown

NOTE: Ensure that the rubber rollers do not become contaminated with grease

while disassembling the ADF motor assembly.

SM 3-15 B273

ADF MOTOR ASSEMBLY

[E]

[D]

B273R927.WMF

4. Release the bushing [D] and rotate it until it reaches the slot, as shown above.

5. Remove the pick-up assembly [E].

[F]

B273R928.WMF

6. Remove the 2 x  securing the upper cover [F] and remove the upper cover, as shown above.

NOTE: Note the position of the ferrite core and motor harness routing before

removing the ADF motor assembly. Return these to their original positions when reassembling the ADF assembly.

B273 3-16 SM

ADF MOTOR ASSEMBLY

[H]

[I]

[G]

B273R929.WMF

7. Unplug 1 x  and 5 x  securing the ADF assembly.

8. Remove the ADF motor assembly [H] from the ADF lower assembly [I].

NOTE: It is not necessary to disassemble the ADF unit if replacing only the

separator pad. In these cases, perform the following:

1) Open the ADF cover and remove the pick-up assembly.

2) Using a pair of tweezers or a small flat-bladed screwdriver, release the clips on both sides of the ADF separator pad assembly.

3) Remove the ADF separator pad assembly from the machine.

SM 3-17 B273

OPERATION PANEL

3.5 OPERATION PANEL

Remove the following before removing the operation panel:

Rear cover 3.2.1

Side covers 3.2.2


[A]

[B]

[C]

B273R931.WMF

B273R930.WMF

1. Remove 10 x  securing the operation board panel cover [A] from the operation board panel assembly [B].

2. Remove the contact rubber [C] from the operation board panel cover [A].

B273 3-18 SM

[D]

B273R932.WMF

3. Remove the keypad [D] from the operation panel board cover.

SM 3-19 B273

MIDDLE COVER AND EXIT ROLLER

3.6 MIDDLE COVER AND EXIT ROLLER

Remove the following before removing the middle cover and exit roller:

Rear cover 3.2.1

Side covers 3.2.2


[A]

B273R933.WMF

1. Remove 4 x  securing the middle cover [A]. Remove the middle cover.

[B]

[A]

B273R934.WMF

2. Remove 2 x  securing the controller shield assembly [B] to the middle cover.

3. Unhook the middle cover [A] from the frame assembly, as shown above.

4. Use caution when removing the shield assembly locating pegs. Lift the top cover out.

B273 3-20 SM

[C]

MIDDLE COVER AND EXIT ROLLER

[D]

[E]

B273R935.WMF

5. Remove the exit gear [C], exit roller [D], and 4 x bushings [E], as shown above.

SM 3-21 B273

CONTROLLER SHIELD ASSEMBLY

3.7 CONTROLLER SHIELD ASSEMBLY

Remove the following before removing the control shield assembly:

Rear cover 3.2.1

Side covers 3.2.2

[A]

B273R936.WMF

1. Remove all connectors and 5 x  securing the controller shield assembly [A] to the middle cover and the frame. Remove the assembly.

2. Remove 2 x  connecting the NIC card [B] to the controller board assembly.

3. Remove the NIC card [B].

[B]

[A]

B273R937.WMF

B273 3-22 SM

[D]

[C]

B273R938.WMF

4. Remove the 5 x  to remove the bracket [C] from the main board [D].

SM 3-23 B273

ENGINE SHIELD ASSEMBLY AND EXIT BOARD

3.8 ENGINE SHIELD ASSEMBLY AND EXIT BOARD

Remove the following before removing the engine shield and exit board:

Rear cover 3.2.1

Side covers 3.2.2


3.8.1 ENGINE SHIELD

[A]

[C]

[B]

[D]

B273R939.WMF

1. Unplug the following connectors:

[A] Exit connector

[B] Main connector

[C] AC connector

[D] Fan connector

(not shown) LIU connector if connected

B273 3-24 SM


[A]

B273R940.WMF

2. Remove the 11 x  securing the engine shield assembly [A]. Tilt the assembly to one side. Unplug all harnesses before removing the assembly.

SM 3-25 B273


3.8.2 EXIT BOARD

1. Remove the 2 x  exit board [B]

2. Remove the board.

B273R941.WMF

[B]

B273 3-26 SM

3.9 SMPS AND LIU

Remove the following before removing the SMPS and LIU:

Rear cover 3.2.1

Side covers 3.2.2


Engine shield assembly 3.8

SMPS AND LIU

[A]

B273R942.WMF

1. Remove the 2 x  securing the inlet bracket [A] and remove the bracket.

2. Remove the 1 x  securing the engine shield ground wire [B].

[B]

B273R943.WMF

SM 3-27 B273

SMPS AND LIU

[C]

B273R944.WMF

3. Remove the 3 x  securing the SMPS [C]. Lift the SMPS out as shown above.

4. Remove the 3 x  securing the

LIU. Lift the LIU [D] out, as shown in the illustration on the right.

[D]

B273R945.WMF

B273 3-28 SM

FUSING UNIT

3.10 FUSING UNIT

Remove the following before removing the fusing unit:

Rear cover 3.2.1

3.10.1 FUSING UNIT ASSEMBLY

NOTE: Perform procedure 3.10.1 only if removal of entire fusing unit assembly is

required. Otherwise, use individual component procedures.

[A]

B273R946.WMF

1. Unplug the 2 x  from the main PBA and SMPS.

2. Remove the 4 x  securing the fusing assembly [A] and remove the fusing assembly.

SM 3-29 B273

FUSING UNIT

3.10.2 THERMOSTAT

[B]

[A]

[C]

B273R947.WMF

1. Remove the 4 x  (bolts) [A] securing the thermostat [B].

2. Lift the thermostat [B] out. Ensure that bolts and nuts [C] are stored in a safe place.

3.10.3 FUSING LAMP

[B]

[A]

1. Remove the 2 x  securing the fusing lamp [A].

2. Remove the fusing lamp [A] from the hot roller [B].

B273R948.WMF

B273 3-30 SM

3.10.4 STRIPPER PAWLS

[C]

[A]

FUSING UNIT

[B]

B273R949.WMF

1. Remove the 4 x  securing the fusing unit cover [A].

2. Remove the 2 x  securing the guide input [B].

3. Remove the stripper pawls [C] from the fusing unit cover [A].

SM 3-31 B273

FUSING UNIT

Reassembling the Fusing Unit

The four stripper pawls must be placed in the correct position before reassembling the fusing unit. Perform the following procedure before placing the fusing unit back into the fusing unit assembly.

1. Snap the four stripper pawls [A] out of the left and right side stripper pawl holder slots (shown in white circles below).

[A]

B273R950.TIF

2. Place the top part of the fusing unit onto the bottom part of the fusing unit.

3. Place the four stripper pawls [A] back into the stripper pawl holder slots (shown with two white arrows in the illustration below).

4. Push the sides of the stripper pawls securely into the stripper pawl holder slots.

5. Reassemble the rest of the fusing unit and place it back into the machine.

[A]

B273R951.TIF

B273 3-32 SM

FUSING UNIT

Note:

The illustration below shows the stripper pawls in the incorrect position.

Note that the stripper pawls are not correctly set into the stripper pawl holder slots.

Do not place the fusing unit back into the machine with the stripper pawls in the wrong position.

B273R952.TIF

SM 3-33 B273

FUSING UNIT

3.10.5 THERMISTOR

[A]

1. Unwrap the thermistor harness [A], as shown above.

B273R950.WMF

[B]

B273R951.WMF

2. Remove 1 x  securing the thermistor [B] and remove the thermistor.

B273 3-34 SM

3.11 FAN

Remove the following before removing the fan:

Rear cover 3.2.1

Side covers 3.2.2

[B]

1. Unplug the 1 x  [A] from the SMPS.

2. Remove the 1 x  securing fan [B].

3. Remove the fan [B].

[A]

B273R952.WMF

FAN

SM 3-35 B273

LSU

3.12 LSU

Remove the following before removing the LSU:

Rear cover 3.2.1

Side covers 3.2.2


Front cover 3.2.3

Middle cover 3.6

[A]

[B]

B273R953.WMF

1. Remove the 4 x  securing the LSU [A] and remove the LSU.

2. Ensure that the wire [B] is kept in a safe place.

3. Unplug the 2 x , as shown in the illustration.

B273R954.WMF

B273 3-36 SM

3.13 CRUM BOARD

Remove the following before removing the CRUM board:

Rear cover 3.2.1

Side covers 3.2.2


Front cover 3.2.3

Middle cover 3.6

LSU 3.12

[A]

CRUM BOARD

B273R956.WMF

1. Remove the 4 x  to separate the CRUM board [A] from the mainframe, as shown above. Ensure that the springs are kept in a safe place.

SM 3-37 B273

DRIVE ASSEMBLY

3.14 DRIVE ASSEMBLY

Remove the following before removing the drive assembly:

Rear cover 3.2.1

Side covers 3.2.2

Controller shield assembly 3.7

[A]

1. Remove the 5 x  securing the drive assembly.

[B]

2. Remove the drive assembly

[B].

3. Unplug the 1 x  [C] from the motor PBA.

B273R955.WMF

[C]

B273R957.WMF

NOTE: The six screws have numbers stamped on the drive assembly base

plate. Tighten the screws in the order shown on the plate, when reassembling the drive assembly. It is necessary to consider only screws one to five at the time of drive assembly replacement. Screw number six is tightened when the controller shield assembly is replaced.

B273 3-38 SM

3.15 COVER MID-FRONT

Remove the following before removing cover mid-front:

Rear cover 3.2.1

Side covers 3.2.2

Middle cover 3.6

[B]

[A]

1. Remove the 4 x  securing the cover mid-front [A].

2. Release the 2 clips [B] in the center.

3. Remove the cover mid-front [A].

NOTE: The cover is very fragile. Use caution when removing it.

B273R958.WMF

SM 3-39 B273

TRANSFER ASSEMBLY

3.16 TRANSFER ASSEMBLY

Remove the following before removing the transfer assembly:

Rear cover 3.2.1

Side covers 3.2.2


Front cover 3.2.3

Middle cover 3.6

LSU 3.12

Cover Mid-Front 3.15

[A]

B273R959.WMF

1. Remove the 3 x  securing the transfer ground [A] and remove the ground.

[C]

[B]

[D]

B273R960.WMF

2. Unplug the Pre-Transfer Lamp (PTL) holder connector [B] and remove the PTL

[C].

3. Remove the PTL lens [D].

B273 3-40 SM

[E]

[F]

B273R961.WMF

4. Remove the transfer roller [E] by pressing the hook [F] securing the roller to the right.

[H]

[G]

B273R962.WMF

5. Unlatch the bushing [G] and remove it.

6. Lift the transfer roller [H] out, as shown above.

SM 3-41 B273

FEED ASSEMBLY

3.17 FEED ASSEMBLY

Remove the following before removing the feed assembly:

Rear cover 3.2.1

Side covers 3.2.2


Front cover 3.2.3

Middle cover 3.6


Drive assembly 3.14

[A]

B273R963.WMF

1. Remove the 4 x  securing the guide paper front, and remove the guide paper.

[B]

2. Remove the 2 x  on both sides of the guide paper, to remove the two guides [B].

3. Remove the two guides and the two springs, as shown in the illustration.

[B]

B273R964.WMF

B273 3-42 SM

[C]

B273R965.WMF

4. Remove the 3 x  securing the feed bracket [C], and remove the bracket.

[D]

B273R967.WMF

5. Remove feed gear 2 [D].

SM 3-43 B273

FEED ASSEMBLY

[E]

6. Remove feed gear 1 [E].

[F]

B273R966.WMF

[G]

7. Remove the feed roller [F].

8. Remove feed roller 1 [G], as shown above.

B273R968.WMF

B273 3-44 SM

PICK-UP ASSEMBLY AND SOLENOID

3.18 PICK-UP ASSEMBLY AND SOLENOID

Remove the following before removing the pick-up assembly and solenoid:

Rear cover 3.2.1

Side covers 3.2.2


Front cover 3.2.3

Middle cover 3.6


Drive assembly 3.14

Engine shield assembly 3.8

Feed assembly 3.17

3.18.1 PICK-UP ASSEMBLY

[A]

1. Remove the pick-up gear assembly [A].

2. Remove the pick-up assembly, as shown in the illustration.

B273R969.WMF

1

2

[B]


3.18.2 SOLENOID

[C]

[D]

B273R971.WMF

3. Remove the 1 x  securing the pick-up solenoid [C] and remove the solenoid.

4. Remove the 1 x  securing the manual solenoid [D] and remove the solenoid.

[F]

[E]

[G]

B273R972.WMF

5. To replace the pick-up roller, move the stopper [E] securing the sponge roller

[F] top the right. Turn the sponge roller and remove it from the shaft [G].

B273 3-46 SM


3.18.3 BY-PASS PICK-UP ROLLER AND PAPER FEED UNIT PICK-

UP ROLLER

It is possible to replace the by-pass or paper feed unit pick-up rollers only. Perform the following procedures only if it is necessary to replace the by-pass pick-up roller or the paper feed unit pick-up roller.

By-pass pick-up roller

[B]

[A]

B273R973.WMF

1. Release the white catch and the slide locking piece as far to the side as possible.

2. Slide the white collar [A] as far to the side as possible.

3. Slide the by-pass pick-up roller [B] as far as possible to the side, until it is free from the white collar.

4. Rotate the pick-up roller around the drive shaft until it can be removed.

SM 3-47 B273


Paper Feed Unit Pick-up Roller

[E]

[E]

[D]

[C]

B273R974.WMF

1. Turn the machine upside down.

2. Release the white catch [C]. Slide the locking piece as far to the side as possible.

3. Slide the white collar [D] as far to the side as possible.

4. Slide the pick-up roller [E] to the side until it releases from the white collar.

5. Rotate the pick-up roller around the drive until it can be removed.

B273 3-48 SM

TROUBLESHOOTING

PAPER PATH

4. TROUBLESHOOTING

4.1 PAPER PATH

The diagram below shows the paper path for the scanner and the engine of the machine. Refer to the next two pages for more details.

[A]

[A] Scanner

[B] Engine

[B]

Engine Part

4

1

Fuser

7

PR

3

L S U

5

CR

OPC

TR

DR

SR

PTL

6

Toner Cartridge

FR

8

2

B273T04.WMF

SM 4-1 B273

PAPER PATH

4.1.1 COPY/SCAN DOCUMENT PATH

Scanner

3

2

7

5

6

White-Sheet

4

8

1

1. Paper

2. Pick-up roller

3. ADF roller

4. Document sensor

5. Registration sensor

6. Scanning sensor

7. Feed roller

8. Exit roller

B273T05.WMF

B273 4-2 SM

Engine

Engine Part

3

PAPER PATH

L S U

7

2

PTL

6

4

5

1

B273T06.WMF

1. Paper feed unit

2. By-pass tray

5. Paper empty sensor (paper feed unit)

6. Paper feed sensor

3. Paper output area (face down) 7. Paper exit sensor

4. Paper empty sensor (by-pass)

SM 4-3 B273

PAPER PATH

4.1.2 PRINTER PAPER PATH

The machine feeds paper from the main cassette or by-pass tray when it receives a print command. The paper being fed passes the paper feed sensor.

1. Jam 0 occurs if the sensor is not actuated within a certain time.

2. Jam 1 also occurs if the sensor is not actuated within a certain time.

3. Jam 2 occurs if the trailing edge of the paper does not pass the exit sensor within a certain time, after the leading edge of the paper activates the exit sensor.

B273 4-4 SM

PAPER JAM CONDITIONS

4.2 PAPER JAM CONDITIONS

The following are conditions in which paper can become jammed during a print job:

• The tray is loaded incorrectly or overfilled.

• The tray has been pulled out during a print job.

• The front cover has been opened during a print job.

• Incorrect paper type was used.

NOTE: An error message shows on the LCD if a paper jam occurs. Find and

remove the jammed paper. If you don’t see the paper, open the covers. Do

not use a tweezers, pincers or other metal tools to clear paper jams.

This could damage the internal mechanisms.

Jam0 (Paper Feed Area) Jam1 (Fusing/Toner Cartridge)

EXIT

Sensor

L T P

MP Sensor

L T P

MP Sensor

Jam2 (Paper Exit Area)

B273T07.WMF

B273T08.WMF

By-pass Jam (By-pass Tray)

EXIT

Sensor

L T P

MP Sensor

EXIT

Sensor

L T P

FR

MP Sensor

B273T10.WMF

B273T09.WMF

SM 4-5 B273


4.2.1 CLEARING DOCUMENT JAMS (ADF)

“DOCUMENT JAM” appears on the operation panel if a document jams when fed through the ADF.

ADF Input Misfeed

Perform the following to remove a jam of this type:

1. Open the top cover [A].

[A]

B273T11.WMF

B273T12.WMF

2. Pull the document gently to the right and out of the ADF.

3. Close the top cover and load the documents to the ADF again.

NOTE: To prevent document jams, use the platen glass instead of the ADF for the

thick, thin, or mixed documents.

B273 4-6 SM


ADF Exit Misfeed


1. Open the document cover and turn the release knob to remove the misfed documents from the exit area.

2. Close the document cover. Load the documents to the ADF again.

ADF Roller Misfeed


[B]

[A]

1. Open the document cover [A].

2. Turn the release knob [C] to release the document [B].

[C]

B273T13.WMF

[D]

B273T14.WMF

3. With both hands, carefully pull the document [D] to the right.

4. Close the document cover. Load the documents into the ADF again.

SM 4-7 B273


4.2.2 JAM0 (PAPER FEED AREA)


1. Open and close the front cover. The jammed paper should automatically exit the machine. (Proceed to the next step if the paper does not exit.)

2. Pull the paper tray [A] open.

[A]

B273T16.WMF

3. Remove the jammed paper by gently pulling it straight out.

4. Push the paper tray back to the machine until it snaps into place.

5. Open and close the front cover to resume printing again.

NOTE: If there is any resistance and the paper does not move when you pull, or if

you cannot see the paper in this area, proceed to the fuser area around the toner cartridge.

B273 4-8 SM


4.2.3 JAM1 (FUSING AREA OR AROUND THE TONER

CARTRIDGE AREA)


NOTE: The fusing area is hot. Use caution when removing paper from this area of

the machine.

1. Open the front cover and remove the toner cartridge.

[A]

B273T17.WMF

2. Remove the jammed paper by gently pulling it straight out.

3. Replace the toner cartridge and close the front cover. Printing should resume automatically.

SM 4-9 B273


4.2.4 JAM2 (PAPER EXIT AREA)


1. Open and close the front cover. The jammed paper automatically exits the machine. Proceed to step two if the paper does not exit from the machine.

2. Gently pull the paper out of the front output tray.

[A]

[B]

B273T19.WMF

3. Open the face-up door [A] if there is resistance on the paper when you try to pull it out of the front output tray.

4. Remove the paper [B] by gently pulling it straight out.

5. Close the rear cover.

6. Open the close the front cover to resume printing.

B273 4-10 SM


4.2.5 BY-PASS TRAY JAM

“MP Tray Jam” appears on the display when printing via the by-pass tray, and the machine does not detect paper. This occurs due to no paper, or improper paper loading. This error message may also occur when the paper is not properly fed into the machine through the manual feeder.

In this situation, pull the paper out of the machine.

SM 4-11 B273

PAPER FEED PROBLEMS

4.3 PAPER FEED PROBLEMS

4.3.1 INCORRECT PRINT POSITION

Description: The print job begins despite the paper being in the incorrect position

in the paper cassette.

Cause Solution

Replace the defective actuator Defective feed sensor actuator

4.3.2 JAM 0

Description:

• Paper does not exit from the cassette.

• Jam 0 appears when the paper feeds into the printer.

L T P

MP Sensor

B273T07.WMF

Cause Solution

1. Defective solenoid. Check the solenoid in

Tech Mode.

2. Cassette/By-pass knock-up plate and springs are misaligned or defective.

3. Paper separator pad is dirty or defective.

4. Pick-up roller may be contaminated or not installed correctly.

5. The area between the pick-up roller and registration sensor may be contaminated.

6. Feed sensor may be defective. Check in

Tech Mode.

1. Replace the solenoid.

2. Repair/replace as required.

3. Clean with a soft cloth dampened with isopropyl alcohol or water. Replace if necessary.

4. Clean with a soft cloth dampened with isopropyl alcohol or water. Replace if necessary.

5. Ensure all rollers are clean.

6. Check the SMPS PBA, Main PBA, and all connectors. Replace any faulty components.

B273 4-12 SM

4.3.3 JAM 1

Description:

• Paper becomes jammed in front of, or inside, the fusing unit.

• Paper becomes stuck in the discharge roller and in the fusing unit, after it passes through the actuator feed.

EXIT

Sensor

PAPER FEED PROBLEMS

L T P

MP Sensor

B273T08.WMF

Cause Solution

1. Paper becomes jammed in front of, or inside, the fusing unit.

2. Feed actuator may be defective.

4.3.4 JAM 2

1. Replace the SMPS.

2. Disassemble then reassemble the actuator feed and spring.

Description:

• Paper becomes jammed in front of, or inside, the fusing unit.

• Paper becomes stuck in the discharge roller and in the fusing unit, after it passes through the actuator feed.

EXIT

Sensor

L T P

MP Sensor

B273T09.WMF

Cause Solution

1. Jam 2 can appear even if the paper is completely fed out of the printer. The exit sensor may be defective. This sensor should return to its original position to close the photosensor. It may remain open due to debris.

2. Paper remains rolled around the hot roller. The guide claw could be broken or damaged.

1. Check if the exit sensor or actuator exit is damaged:

• Check if burrs show on the assembly part of the exit actuator.

• Check if particles prevent or other debris correct operation of the actuator.

2. Disassemble the fusing unit and remove the jammed paper. Then, clean the surface of the pressure roller with dry gauze. Check all ribs, claws, and springs.

SM 4-13 B273

PAPER FEED PROBLEMS

4.3.5 MULTI-FEEDING

Description: Multiple sheets of paper are fed

at the same time.

L T P

FR

MP Sensor

B273T10.WMF

Cause Solution

1. Paper size guides may not be set correctly (main paper tray unit and bypass tray).

2. Solenoid does not operate correctly.

3. Friction pad is contaminated.

1. Adjust the paper guides.

2. Replace the solenoids or PBA.

3. Clean the friction pad with a soft cloth dampened with isopropyl alcohol or water.

4. Paper has a rough surface edge. 4. Use paper with a smoother surface.

4.3.6 PAPER IN THE FUSING UNIT

Description: Paper becomes rolled around the rollers in the fusing unit.

Cause Solution

1. Pressure roller or hot roller may be contaminated.

2. Ribs, claws, or springs may be damaged or deformed.

1. Clean the roller surfaces and area between the hot roller and thermistor with isopropyl alcohol or water.

2. Check for damage. Replace if necessary.

B273 4-14 SM

PAPER FEED PROBLEMS

4.3.7 PAPER BECOMES ROLLED AROUND THE OPC DRUM

Description: Paper becomes rolled around the OPC drum.

Cause Solution

1. Paper is too thin.

2. The face of the paper is curled.

1. Use paper supported for use in this machine. (See Operator Guide)

2. Ensure that paper is stored correctly.

To remove paper from the OPC:

1) Remove the toner cartridge from the machine (do not touch the green surface of the OPC Drum with bare hands).

2) Rotate the gear wheel and remove the paper from the cassette.

3) Clean all fingerprints from the OPC

Drum with a soft tissue. Do not

scratch the drum surface.

4.3.8 DEFECTIVE ADF

Description: ADF does not operate correctly.

Cause Solution

1. ADF roller or holder may be damaged.

2. ADF assembly sensors (3) may not operate correctly.

1. Replace the damaged part.

2. Replace the ADF assembly if you cannot identify the problem.

SM 4-15 B273

MACHINE MALFUNCTIONS

4.4 MACHINE MALFUNCTIONS

4.4.1 LCD DISPLAY DEFECTIVE

Description: Unusual characters appear on the LCD panel, or the operation panel

buttons do not work.

Cause Solution

1. The memory needs to be cleared. 1. Clear the memory and attempt to use the machine again.

2. Operation panel harness is not connected correctly. 2. Check the harness connection. Replace the operation board assembly and main board if this does not solve the problem.

4.4.2 DEFECTIVE CONTROL PANEL

Description: Operation panel does not operate when keys are pressed.

Cause Solution

1. The memory needs to be cleared.

2. No sounds are heard when the keys are pressed.

1. Ensure that the keypad is correctly assembled. Replace the keypad if necessary.

2. Replace the operation panel and main board.

4.4.3 FUSING GEAR MELTS (OVERHEATS)

Description:

• Paper constantly gets jammed in the fusing unit.

• Fusing unit rollers do not turn.

Cause Solution

Fusing lamp, thermostat, or thermistor are damaged.

Check the fusing unit in engine diagnostic mode:

• Replace the fusing unit.

• Replace the SMPS or main PBA if necessary.

B273 4-16 SM

4.4.4 PAPER EMPTY 1

Description: “Paper Empty” appears on the LCD when paper is loaded in the

cassette.

Cause Solution

1. Paper sensor or paper sensor actuator is damaged.

2. SMPS or main PBA is defective.

3. Faulty cables or connectors.

4.4.5 PAPER EMPTY 2

1. Replace the defective sensor or actuator.

2. Replace the SMPS or main board.

3. Check all connections.

Description: “Paper Empty” does not appear on the LCD when there is no paper

loaded in the cassette.

Cause Solution

1. Paper sensor or paper sensor actuator is damaged.

2. SMPS or main PBA are defective.

4.4.6 COVER OPEN 1

1. Replace the defective sensor or actuator.

2. Replace the SMPS or main board.

Description: “Cover Open” message appears on the LCD when the front cover is

closed.

Cause Solution

1. “Open Cover” microswitch is stuck or damaged.

2. Front cover tab is damaged or broken. connection the main PBA.

1. Perform the cover sensor test in Tech

Mode to check cover switch operation.

Replace the switch if necessary.

2. Replace the front cover.

3. Replace the main PBA or cover open switch if necessary.

SM 4-17 B273

MACHINE MALFUNCTIONS

4.4.7 COVER OPEN 2

Description: “Cover Open” message does not appear on the LCD when the front

cover is open.

Cause Solution

1. “Open Cover” microswitch is stuck or damaged.

1. Perform the cover sensor test in Tech

Mode to check cover switch operation.

Replace the switch if necessary. connection the main PBA. 2. Replace the main control board or cover open switch if necessary.

4.4.8 DEFECTIVE MOTOR OPERATION

Description: Main motor does not operate and paper is not fed into the machine.

In this condition, Jam 0 appears.

Cause Solution

Main motor harness or motor PCB are faulty. Check the motor harness and connectors.

Replace if necessary. Replace the main PBA if the problem stays.

• Use EDC mode to check motor operation.

4.4.9 NO POWER

Description: LCD panel does not come on when the machine power is turned on.

Cause Solution

1. Power input and SMPS output are abnormal.

2. Normal start-up sounds are heard but the

LCD does not come on.

3. LCD does not come on and no sounds are heard after the SMPS is replaced.

1. Replace the power supply cord or SMPS.

Replace fuses if necessary.

2. Replace the operation panel.

3. Replace the main PBA.

B273 4-18 SM

4.4.10 PRINTED VERTICAL LINES BEND

Description: Vertical lines are curved on output prints.

Cause Solution

24 V power supply to the LSU is faulty. 1. Replace the LSU if the 24 V power supply is stable.

2. Replace the SMPS if the 24 V power supply is unstable. Replace the main PBA if the problem persists.

SM 4-19 B273

PRINTING QUALITY PROBLEMS

4.5 PRINTING QUALITY PROBLEMS

4.5.1 INCORRECT PRINT POSITION

Description: Paper is fed despite the paper being in the incorrect position in the

paper cassette.

Cause Solution

Replace the defective actuator Defective feed sensor actuator

4.5.2 VERTICAL WHITE LINE

Description. Blank/White vertical lines appear on output prints.

Portions of the image are blank.

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Digital Printer

B273T914.WMF

Cause Solution

1. Window or internal lenses of LSU mirror are contaminated.

2. Particles inside the toner cartridge, or toner supply is low. contamination, or burrs on the edge of the toner cartridge window.

4. Fusing unit is defective, if blank areas periodically appear on the top of black images.

5. OPC drum is contaminated.

6. Depression or deformation on the surface of the transfer roller.

1. Clean the LSU window with isopropyl alcohol. Replace the LSU if there are particles inside.

2. Replace the toner cartridge.

3. Clean the exposure window.

4. Check the ribs of the fusing unit and remove particles if found.


6. Replace the transfer roller.

B273 4-20 SM


4.5.3 HORIZONTAL BLACK BANDS

Description: Dark or blurry horizontal stripes appear

periodically on the output print.

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Digital Printer

B273T915.WMF

Cause Solution

1. Bad contacts on the toner cartridge highvoltage terminals.

2. The following rollers may be damaged:

• Charge roller in the toner cartridge.

• Supply roller in the toner cartridge.

• Development roller in the toner cartridge.

• Transfer roller.

1. Clean all high-voltage terminals on the toner cartridge and set frame. Remove toner and dust particles.

2. Clean the gear on the OPC. Replace the toner cartridge if the problem persists.

3. Clean the transfer roller gear. Replace the transfer roller if the problem persists.

4.5.4 BLACK/WHITE SPOTS

Description: Dark, white, or blurry spots appear periodically

throughout the output print.

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Digital Printer

B273T916.WMF

Cause Solution

1. Developer is coated with paper dust or other matter.

2. The OPC drum surface is damaged.

3. Transfer roller has reached end of life.

1. Print several OPC cleaning mode prints.

Run the self-test 2-3 times.

2. Examine the OPC drum surface and remove any particles with a soft lint free cloth. Replace the toner cartridge if the problem persists.

3. Replace the transfer roller if use has exceeded the 60 K PM replacement interval.

SM 4-21 B273


4.5.5 LIGHT IMAGE

Description: Printed image is too light (no “ghosting”).

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Digital Printer

B273T917.WMF

Cause Solution

1. Toner save mode is enabled.

2. Developer roller is contaminated or the toner cartridge is almost empty.

3. Ambient temperature is below 10 C.

4. Bad contact due to dirty terminals on the toner cartridge set.

5. Abnormal output from the HVPS.

1. Turn the toner save more off.


3. Turn the machine off. Wait 30 minutes and turn the machine on again. Attempt to print.

4. Clean dirt from the toner cartridge and cartridge set contacts.

5. Replace the HVPS.

4.5.6 DARK/BLACK IMAGE

Description: Printed image is dark/black.

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Digital Printer

B273T919.WMF

Cause Solution

1. No charge voltage from the engine board.

2. Charge voltage fault due to bad contact between toner cartridge and cartridge set.

3. VD0 signal from main PBA is low.

1. Check the connector that connects the

HVPS and the engine board.

2. Clean the high-voltage charge terminals.

Replace the HVPS if the problem persists.

3. Replace the LSU or main PBA.

B273 4-22 SM


4.5.7 UNEVEN DENSITY

Description: Print density is uneven between the left and right

sides of the output print.

B273T920.WMF

Cause Solution

1. Pressure force on the left and right springs of the transfer roller is not even, springs are damaged, transfer roller is not correctly installed, or transfer roller bushings or holders are damaged.

2. Toner cartridge has reached end of life.

3. Toner inside the cartridge is not level due to damaged blade or low toner.

4.5.8 BACKGROUND

1. Replace both the left and right bushings and spring assemblies.


3. Gently shake the toner cartridge side to side 5-6 times and attempt to print again. Replace the toner cartridge if the problem persists.

Description: Light background is visible throughout the output

print.

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Digital Printer

B273T921.WMF

Cause Solution

1. The machine has not printed large quantities of low coverage pages, or the machine has not been used for an extended period.

2. A recycled toner cartridge is being used.

3. The toner cartridge has reached end of life.

4. The up/down movement of the transfer roller is not smooth.

5. HVPS is not performing within specification.

1. The toner cartridge is designed to print

3,000 sheets with 5% coverage.

Background can appear if the machine prints more than 3,600 pages with only

2% coverage.

2. Machine operation is not guaranteed with use of recycled toner cartridges. Gently shake the toner cartridge side to side 5-6 times and attempt to print again. Replace the toner cartridge if the problem persists.


4. Clean the transfer roller bushings.

5. Clean the high-voltage charge terminals.

Replace the HVPS if the problem persists.

SM 4-23 B273


4.5.9 GHOST 1

Description: Image “Ghosting” appears on the output prints at

75.5 mm intervals.

Digital Printer

Digital Printer

B273T922.WMF

Cause Solution

1. Bad contacts caused by toner particles between the high voltage terminal in the main body, and the electrode of the toner cartridge.

2. Bad contacts caused by toner particles between the high-voltage terminal in the main body, and the in the HVPS board.

3. The toner cartridge has reached end of life.

4. Transfer roller has reached end of life.

5. Ambient temperature is below 10 C.

6. Damaged cleaning blade in the toner cartridge.

4.5.10 GHOST 2

1. Clean all HV contacts. Replace the HVPS if the problem persists.

2. Clean all HV contacts. Replace the HVPS if the problem persists.


4. Replace the transfer roller.

5. Turn the machine off. Wait 30 minutes and turn the machine on again. Attempt to print.


Description: Image “Ghosting” appears on the output prints at 75

mm intervals.

Digital Printer

Digital Printer

Digital Printer

B273T923.WMF

Cause Solution

Higher voltage required when printing on card stock, thick paper, or OHP sheets.

Set the machine to print for these media types, via the printer driver or application software.

B273 4-24 SM


4.5.11 GHOST 3

Description: Image “Ghosting” appears on the output print at

66.3 or 75.5 mm intervals.

B273T924.WMF

Cause Solution

Fusing unit is contaminated Disassemble the fusing unit and remove matter from the rollers. Clean particles between the thermistor and the hot roller.

(Use caution. Do not damage the rollers.)

4.5.12 GHOST 4

Description: White or pale “ghosting” appears on the output

prints at 32 mm intervals.

B273T925.WMF

Cause Solution

1. Developer has reached end of life.

2. Incorrect output from the HVPS.


2. Check the HVPS supply voltage. Clean the HV terminals on the cartridge and cartridge set. Replace the HVPS if the problem persists.

SM 4-25 B273


4.5.13 MARKS ON FRONT OF PAGE

Description: Background or black marks are visible on the

output print.

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Digital Printer

B273T926.WMF

Cause Solution

1. Toner leakage due to incorrectly sealed toner cartridge.


2. Perform the PC cleaning mode 2-3 times.

Then perform the self-test 2-3 times.

4.5.14 MARKS ON BACK OF PAGE

Description: Background or black marks are visible at 47.1 or

75.4 mm intervals, on rear side of the output print.

Digital

Digital Pri

Digital Printer

Digital Printer

Digital Printer

B273T927.WMF

Cause Solution

2. Pressure roller is contaminated.

1. Perform the PC cleaning mode 2-3 times.

Then perform the self-test 2-3 times.

Replace the transfer roller if the problem persists.

2. Disassemble the fusing unit and clean the hot roller and the pressure roller. Clean the area between the hot roller and the thermistor. (Use caution. Do not damage the rollers.)

B273 4-26 SM


4.5.15 BLANK PAGE 1

Description: Blank page is printed.

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Digital Printer

B273T928.WMF

Cause Solution

Bad ground contacts in the OPC and/or toner cartridge.

Check if the ground OPC or the OPC ground

Zener diode are defective. Clean the terminals on the toner cartridge and cartridge set.

4.5.16 BLANK PAGE 2

Description: Blank page or several blank page (s) are printed,

or several blank pages are printed when the machine is turned on.

Defective solenoid.

B273T929.WMF

Cause Solution

Perform the engine self test mode in Tech

Mode to check if the solenoid operation is intermittent or defective. Replace the main

PBA if the problem persists.

SM 4-27 B273

FAX AND PHONE PROBLEMS

4.6 FAX AND PHONE PROBLEMS

4.6.1 NO DIAL TONE

Description: No dial tone when the “On-Hook Dial” (OHD) button is pressed.

Cause Solution

1. Telephone line cord is not securely connected to the TEL LINE.

2. No “click” sound is heard when the OHD key is pressed.

3. Faulty harness connection between the

LIU and the main board.

4. Speaker is not correctly connected.

1. Test the wall socket by plugging in a standard telephone. Replace the LIU board if the wall socket is operational.

2. Replace the operation panel assembly if you don’t hear the “click” sound.

3. Examine the speaker connection harness between the LIU and the main power board.

4. Use Tech Mode/Modem Test to check if the speaker and amplifier function correctly. Replace the main board if the speaker and amplifier operate correctly.

4.6.2 DEFECTIVE MF DIAL

Description: MF Dial does not function correctly.

Cause Solution

1. Telephone line cord is not securely connected to the TEL LINE.

2. No “click” sound is heard when the OHD key is pressed.

3. Faulty harness connection between the

LIU and the main board.

4. Speaker is not correctly connected.

1. Test the wall socket by plugging in a standard telephone. Replace the LIU board if the wall socket is operational.

2. Replace the operation panel assembly if you don’t hear the “click” sound.

3. Examine the speaker connection harness between the LIU and the main power board.

4. Use Tech Mode/Modem Test to check if the speaker and amplifier function correctly. Replace the LIU and main board in sequence if the speaker and amplifier function correctly.

B273 4-28 SM


4.6.3 DEFECTIVE FAX FORWARD/RECEIVE

Description: Fax Forward/Receive function does not function correctly.

Cause Solution

1. No dial tone is heard when you press the

On Hook Dial (OHD) button.

1. Replace the LIU if the modem test is normal but there is still no dial tone.

2. No receive tone is heard when performing the modem test in Tech Mode.

4.6.4 DEFECTIVE FAX FORWARD

2. Replace the main board if the modem test shows a fault.

Description: Receive function operates correctly. Forward function does not

operate correctly, or received data is corrupt.

Cause Solution

1. An unusual noise is heard when “On-

Hook” is pressed.

2. Use the same socket (if possible) to verify if the destination fax machine can receive forwarded faxes.

3. Cable between the machine and the wall socket is damaged.

4.6.5 DEFECTIVE FAX RECEIVE 1

1. Repair the telephone line.

2. Replace the LIU.

3. Replace the line cord.

Description: Forward function operates correctly. Receive function does not

operate correctly, or received data is corrupt.

Cause Solution


Hook” is pressed.

2. Use the same wall socket with a different fax to receive data from the same sender.

1. Repair the telephone line

2. Replace the LIU.

SM 4-29 B273



Description: Received data is lengthened or cut off in the printout.

Cause Solution


Hook” is pressed.

1. Repair the telephone line.

2. Use the same wall socket and ask the sender to send another fax to a different fax machine.


2. Replace the LIU or main PBA in sequence.

Description: The phone rings continuously but the call is not answered.

Cause Solution

Receive mode is not set to Fax Mode.


Replace the LIU or main PBA in sequence if the problem persists, even if the machine is set to Receive Mode.

Description: Received data is reduced by more than 50% in the printout.

Cause Solution

A problem exists with the sending fax machine.

Ask the sender to check the status of their machine.

4.6.9 DEFECTIVE AUTOMATIC RECEIVING

Description: The automatic receive function does not function correctly.

Cause Solution

Receive mode is not set to Fax Mode. Set the Receive Mode to Fax Mode, if it is currently set to TEL mode. Replace the LIU or main PBA in sequence if the problem persists.

B273 4-30 SM

4.7 COPY PROBLEMS

4.7.1 WHITE COPY

Description: Blank page is printed out when copying.

Cause Solution

1. Scanner cover is not closed.

2. Shading profile is not correctly set.

3. Faulty white/black reference voltage on main PBA.

4.7.2 BLACK COPY

1. Close the scanner cover.

2. Perform the shading profile in Tech mode.


Description: Black page is printed out when copying.

Cause Solution

1. CCD problem on the main PBA.


1. Ensure that the CCD harness is correctly connected.


4.7.3 UNUSUAL NOISE

Description: An unusual noise is heard within the ADF during copying.

Cause Solution

1. Faulty scanner motor, gearbox, or rollers.

2. Faulty motor driver on driver PBA.

1. Ensure that the gears and motor are correctly assembled. Ensure that there are no particles or other material in the scanner path. Replace worn parts.


4.7.4 DEFECTIVE IMAGE QUALITY

Description: Copied image is very light or very dark.

Cause Solution


2. Abnormal gap between the original and the scanner glass.

3. Print quality issues.


2. Ensure that the gap does not exceed 0.5 mm. Ensure that the rollers are not defective. Replace if necessary.

3. See the “4.5 Printing Quality Problems” in this manual.

SM 4-31 B273

SCANNING PROBLEMS

4.8 SCANNING PROBLEMS

4.8.1 PC SCANNING PROBLEMS

Description: Unable to scan via the PC.

Cause Solution

1. Cable (USB or Parallel) is not correctly connected.

1. Replace faulty cables. Ensure that the parallel port is correctly configured in the

BIOS.

2. Drive is not correctly installed.

3. Copy function does not operate normally.

2. Ensure that the scanner driver is installed.

3. Replace the main PBA if the copy function does not operate. Replace the

CCD assembly if the problem persists.

4.8.2 POOR QUALITY OF SCANNED IMAGES

Description: Image scanned via the PC is either poor or not clear.

Cause Solution

1. Waveform is abnormal.

2. Resolution is set too low in the PC scan options.

1. Perform a shading test in Tech mode and examine the waveform printout. Replace the CCD if the waveform is abnormal.

2. Adjust the scanner resolution.

B273 4-32 SM

4.9 ERROR MESSAGES

Error Description Solution

By-pass tray jam (door open)

Paper is either jammed in the bypass tray, or paper is not fed correctly.

Clear the paper jam and load paper correctly.

Cancel? 1. Yes, 2. No

COMM error

Low/Open heat error

Overheat

The memory becomes full when attempting to store a document.

Press the ‘1’ button and select ‘yes’ to cancel the fax job.

Press the ‘2’ button and select ‘no’ to send the pages that are stored in memory. This will send only those the pages that are stored. Remaining pages can be sent at a later time, when the memory frees up.

A communication error occurred. Ask the sender to try again.

A problem in the fusing unit occurred.

The machine has overheated.

Check the thermostat, thermistor contact point, and heating lamp.

The machine automatically goes into stand-by mode.

The machine restarts when it cools down to the normal operating temperature.

Check the operation of the thermistor and thermostat if the problem persists.

Delayed function full

Document jam

Door open

Enter again

Function impossible

Group not available

LSU error

Invalid/No cartridge

Line error

The delayed fax job list/memory space is full.

A jam occurred in the ADF.

Cancel unnecessary fax jobs.

Clear the document jam.

The front or rear cover is not securely latched.

Invalid item is entered.

A combination of printer functions that cannot be used at the same time has been attempted.

A group location number has been selected where only a single location number can be used. This can occur when adding locations for a fax broadcast operation.

Close the clover until it locks into place.

Enter the correct item.

Reduce the number of selected functions, or use only one function at a time.

Use a speed dial number, or dial the number manually with the number keypad.

A problem occurred in the LSU. Use tech mode to test the

LSU. Replace if necessary.

A unauthorized cartridge has been used.

Use an approved cartridge.

The machine cannot connect with the remote machine, or has lost contact because of a problem with the phone line.

Try again. If the problem persists, wait an hour for the line to clear and then try again, or turn the ECM on.

SM 4-33 B273

ERROR MESSAGES


Memory full The memory is full. Delete unnecessary documents (delayed transmission, broadcast, polling etc.), or transmit the documents again when more memory becomes available.

This can also occur when sending a large, multiple paged, complex document.

In this condition, split the document into more than one job.

No answer

Number not assigned

The remote fax machine does not answer after several attempts.

The speed dial location has no number assigned to it.

Try again. Ensure the receiving number is correct.

Number not available

An attempt has been made to delay the number for a delayed fax job.

Dial the number manually with the number keypad, or assign the number.

Check the number to be deleted and try again.

Delete the number after the delayed fax job has finished.

No paper/Add paper

Operation not assigned

There is no paper in the paper tray unit.

An Add/Cancel operation is being performed, but there are no jobs waiting.

Load paper to the paper tray unit.

Check the operation panel to see if there are any jobs waiting. The display shows scheduled jobs in stand-by mode, such as delayed fax.

Clear the jam. [Paper jam0] Open/Close door

Paper is jammed in the feed area of the paper tray.

[Paper jam2] check inside Paper is jammed in the paper exit area.

Power failure The power has been turned off then on, and the machine’s memory was not saved.

Registered

Retry redial

Toner low

The group dial location is already registered with another speed dial number.

The machine is waiting for a specified time interval to pass before it attempts to dial a previously busy number again.

The toner is almost empty.

Clear the jam.

In this condition, the memory has been lost. The job must be restarted.

Select another group dial location.

Press <Select> to immediately dial again, or press <Cancel> to cancel the redial operation.

Remove the toner cartridge and gently shake it. This will improve image quality temporarily.

Replace the toner cartridge to ensure print quality.

B273 4-34 SM


Priority fax function full The priority fax job queue is full. Cancel unnecessary priority fax jobs.

Incompatible The remote machine does not have the requested feature, such as sending a color fax.

This message can also show if the remote machine does not have enough memory to complete the job.

Reconfirm the features of the remote machine.

Jam1 or No cartridge Clear the jam.

Install the toner cartridge.

Line busy

Load document

Scanner locked

Paper is jammed in the paper exit area, or the toner cartridge is not installed.

The receiving machine does not answer, or the line is busy.

An attempt has been made to set up a copy/fax job, but no document is loaded in the ADF.

The scanner module is locked.

Try again later.

Load the document in the

ADF and try again.

Unlock the scanner and press Stop/Clear.

Try again. Stop pressed The Stop/Copy button was pressed during a copy/fax job.

Toner empty replace toner The toner cartridge has run out and the machine stops printing.

Retry redial The machine is waiting for a specified timer interval to dial a previously busy station again.

Replace the toner cartridge.

Press <Enter> to immediately redial, or press

Stop/Clear to cancel the redial operation.

SM 4-35 B273

TONER CARTRIDGE

4.10 TONER CARTRIDGE

Ensure that only toner cartridges approved by the manufacturer are used in this machine. Machine operation is not guaranteed if toner cartridges not approved by the manufacturer are used.

4.10.1 TONER CARTRIDGE PRECAUTIONS

Do no expose the toner cartridge to direct light for more than a few seconds.

Print quality can be temporarily improved by redistributing the toner, if the printed image is light due to low toner supply. In this condition, shake the toner cartridge side-to-side 5-6 times. However, the toner cartridge should be replaced at the first opportunity, to ensure high quality copies and prints.

B273 4-36 SM

4.10.2 REDISTRIBUTING TONER

White streaks or light printouts appear when the toner cartridge is near end of life.

At this time, the LCD displays shows the ‘Toner Low’ message. To temporarily bypass this problem, redistribute the remaining toner in the cartridge.

[A]

[B]

B273T01.WMF

1. Open the front cover [A]. Then gently push the toner cartridge [B] down and remove it from the machine.

[B]

B273T02.WMF

[A]

[B]

B273T03.WMF

2. Gently shake the toner cartridge [B] in the direction of the arrow as shown above. Put the toner cartridge [B] back into the machine again and close the front cover [A].

SM 4-37 B273

TONER CARTRIDGE

4.10.3 TONER CARTRIDGE ERROR MESSAGES

The following table shows toner cartridge-related error messages. The messages are generated via data stored in the EEPROM in the toner cartridge.

Error Message

Toner Low

Toner Empty

Drum Warning

Replace Drum

Description

The amount of remaining toner is less than 10%.

Solution

Replace the cartridge.

The toner cartridge is empty. Replace the cartridge.

OPC drum is near end of life

(14,000 pages).

Toner cartridge mechanical life has expired.

Replace the cartridge even if there is still toner in it.

Replace the cartridge.

B273 4-38 SM

4.10.4 TONER CARTRIDE DETAILS

Description Signs

Light image/partially blank image

(cartridge has reached end of life)

• Printed image is light, dirty, or not clear.

• Parts of the image are not printed.

• A ‘tick-tick’ noise is periodically heard within the machine. cartridge.

Solution

1. If the image is light, shake the toner cartridge and try to print again. If the problem persists, the cartridge has reached end of life. Replace the toner

2. Shake the toner cartridge, if some parts of the image are not printed. If the problem persists, clean the LSU window and try to print again. If the problem still persists, the cartridge has reached end of life.

3. Measure the time between ‘ticks’ if this sound is heard. If the time interval between ‘ticks’ is about 2 seconds, the toner has almost reached end of life.

Replace the toner cartridge.

4.

Shake the toner cartridge, if white vertical bands appear on output prints, and try to print again. If the problem still persists, the cartridge has reached end of life. Replace the toner cartridge.

Toner contamination

• Toner contamination is visible at regular intervals on the printout.

•

Toner contamination is visible at random intervals over the whole or parts of the printout.

1. Contamination at regular intervals:

• A) Check the distance between contamination marks.

• B) Check both ends of the toner cartridge OPC drum. If both ends are contaminated with toner, the waste toner collector is full.

• A) Ensure that the terminal contact points of the toner cartridge are clean. Clean all HV contacts if they are dirty. Replace the toner cartridge if the problem persists.

•

B) Ensure that the terminal contact points of the toner cartridge are not damaged. Replace the toner cartridge if there is damage to the contact terminals.

SM 4-39 B273

TONER CARTRIDGE

Description

White/Black Spot

Signs

• Light or dark black dots are visible periodically on the image.

•

White spots are visible periodically on the image.

Cause and Check and Solution

1. Toner cartridge rollers are contaminated with particles, if light or dark black dots appear periodically on the image. In this condition, perform the OPC clean mode print 4-5 times. Check for matter on the

OPC surface. Clean with isopropyl alcohol if necessary.

A) 38 mm interval: Charge roller

B) 95 mm interval: OPC cycle

2. The OPC drum is damaged or matter clings on the drum, if white spots are visible at 95 mm intervals in a black image, or if black spots are visible in areas where they should not appear.

Perform the following if running the

OPC clean mode print 4-5 times does not resolve the problem.

A) 37.7 mm intervals: Replace the toner cartridge.

B) 75.5 mm intervals: Clean the OPC drum.

3.

The transfer roller’s life has expired if a black or white image is broken at irregular intervals. In this condition, replace the transfer roller. Also, check the transfer voltage and readjust it if necessary.

B273 4-40 SM

Description

Recycled Cartridge

Signs

• Toner cartridge appears to be in poor condition.

• Dirty or rough printouts.

•

Poor background in the image.


1. The toner cartridge is recycled if the following are true:

A) There is evidence that the toner cartridge has been disassembled.

B) Materials that are not approved by the manufacturer have been added or substituted into the toner cartridge.

2. Check the toner cartridge for the following. Replace the toner cartridge if necessary.

A) Check the toner cartridge for damage.

B) Check the appearance of following toner cartridge parts:

Frame, hopper, screws.

3. Check the following if the printouts are not clear or rough:

1) Make sure the terminal contact points are clean and the set is not damaged. Clean the terminal points if the problem stays.

The above problems can happen if the toner cartridge is recycled 2 times or more.

SM 4-41 B273

TONER CARTRIDGE

Description

Ghost image and other contamination

Signs

• Print is too light or dark, or partially contaminated.

• Black image is printed out.

•

Print density is too dark and ghosting occurs.


1. Check the following if the printout is too light, too dark or partially contaminated.

A) Check if matter remains on the terminal contact points of the cartridge set.

B) Ensure that the terminal is correctly assembled.

• Perform the following if the above are true:

1) Clean the contacts on the toner cartridge.

2) Clean the contact points on the set.

3) Repair or replace the terminals if they are damaged. Replace the toner cartridge if the problem persists.

2. Check the following if a black image is printed out:

A) Check if matter remians on the terminal contact points of the cartridge set.

B) Check if the terminal and charge roller contacts are correctly assembled.


Examine the charge roller contacts.

Clean them if they appear dirty or contaminated. Replace the toner cartridge if the problem persists.

3. Check the following if the printout is too dark and ghosting occurs:

A) Check if matter remains on the terminal contact points of the cartridge set.

B) Check if the terminal and developer roller contacts are correctly assembled.


1) Check developer bias voltage contact. Clean it if it appears dirty or contaminated.

2)

Examine the charge roller contacts. Clean them if they appear dirty or contaminated.

B273 4-42 SM

4.11 SOFTWARE PROBLEMS

4.11.1 PRINTER DOES NOT OPERATE CORRECTLY 1

Description: The printer does not operate in printing mode when the power is

turned on.

Description Solution

Perform the self-test mode. Use the menu buttons (menu, enter, enter) and print the test page.

Ensure that the PC and the printer are correctly connected. Ensure that the toner cartridge is correctly installed.

There are no problems with the machine, if the test print works correctly. The machine is faulty if the test print does not function correctly. In this condition, the problem is not due to computer software or printer driver settings.

Replace the printer cable. Check the amount of remaining toner if the problem persists. Replace the toner cartridge if necessary.

Printing does not work in Windows.

Ensure that the printer cable is directly connected to the printer.

Check that the connection between PC and printer. Check the following if you use

Windows:

1) Check that the printer driver in the controller is correctly set up

2)

Ensure that the correct port is selected, and “Use On-line” is selected in the driver.

Print a test page from the driver properties if the printer driver is correctly set up. Check in which program that printing does not work.

Open ‘Memo Pad’ and try to print. Adjust the setup within that program if the printer does not work in a certain program.

Sometimes the printout is normal within

Windows basic programs, but does not work in other programs. In this condition, uninstall and re-install the print driver.

Check the following if the printer does not work in Windows basic programs, and you are using the parallel port:

• Check the port setting in CMOS is on

ECP and that the address is IRQ 7 and 378 (for parallel port 1).

•

Try using USB instead of parallel port or vice-versa.

Uninstall other devices that share the printer port, and check if the printer works by itself.

Connect directly to the back of the PC if you are using a USB hub.

SM 4-43 B273

SOFTWARE PROBLEMS

4.11.2 PRINTER DOES NOT OPERATE CORRECTLY 2

Description: After receiving the print command there is either no response or the

print speed is slower than normal. Incorrect machine set-up and printer malfunction are the causes of this condition.


Not enough free hard disk space to accommodate temporary work files created during printing.

‘Insufficient Printer Memory’ message means there is a hard disk space problem, rather than a printer RAM problem. In this condition, provide more space on the hard disk with the disk utilities program.

Printer error occurs even if there is enough space in the hard disk.

Parallel port related problems in the CMOS set-up.

Ensure that the connection between the cable and printer port is correct. Ensure that the port settings in CMOS are correct, if you use the parallel port.

Select ECP for the printer port. SPP and normal modes support 8-bit data transfer.

ECP mode supports 12-bit data transfer.

System needs to reboot to print. The cable of printer driver may be defective if regular fonts do not get printed. At this time turn off the PC and reboot the system. If the problem persists, double click the printer icon in “My Computer”. Replace the cable if the regular fonts are still not printed.

B273 4-44 SM

4.11.3 ABNORMAL PRINTING

Description: The printer does not work even after replacement of the cables, or

unusual fonts are printed.


Parallel port problem with CMOS set-up Ensure that ECP (recommended), or SPP, is selected in the CMOS (BIOS) set-up.

Printer driver error

“Insufficient Memory” message shows. Print jobs may suddenly stop due to insufficient space on the hard disk.

Ensure that the correct driver is loaded. Use the driver supplied on the CD, or download the correct driver from the Ricoh web site.

DO NOT use the Microsoft driver supplied with the Windows operating

system. If the printer is a GDI or SPL type printer, ensure that ALL OTHER GDI or SPL drivers are uninstalled, as Windows only lets one of this type of driver to be loaded.

Delete unnecessary files to free up space on the hard disk. Then try to print again.

4.11.4 SPOOL ERROR

Description: Jobs are processed and stored on the hark disk until the printer is

ready to accept them.


Insufficient space on the hard disk, in the directory assigned for the basic spool.

Previous printing errors were not resolved.

Delete unnecessary files to free up space for spool storage.

Delete ‘.jnl’ files. Then reboot Windows and try to print again.

Close all programs except the one you need.

There may be conflict with other drivers or programs.

An application program or printer driver is damaged.

Delete the printer driver completely. Then reinstall it.

OS-related files are damaged or virusinfected.

Not enough memory exists.

Reboot the computer. Then check for viruses.

Restore damaged files and reinstall application programs that do not work correctly.

Add more memory to the PC.

How to Delete Data in the Spool Manager

The installed drivers and the list of the documents waiting to be printed show in the spool manager. Select the document to be deleted, and select “delete” in the menu. If the job to be deleted is the current job, data that has already been transferred to the printer’s memory will still be printed. The job may take several seconds to a minute or more to delete, as it must wait for a time out if there is a problem with the printer (such as out of toner, offline, out of paper, etc.).

SM 4-45 B273

NETWORK PROBLEMS

4.12 NETWORK PROBLEMS

4.12.1 GENERAL PROBLEMS


Incorrect set-up can cause network errors.

Parameters in the PortThru (network card) may be corrupt. Restart the printer and reset the printer network settings to the factory defaults with the front panel or with SyncThru on the PC.

SNMP Manager cannot access the printer.

Printer does not get an IP address from a

BOOTP, RARAP, or DHCP server.

Try to ping the printer with the SNMP manager.

• A problem exists with the network connectivity between the SNMP manager and PortThru if the ping is not successful.

•

Ensure that community names entered in the

PortThru settings are correct and have necessary permissions, if the ping is successful.

Ensure that there are no VLAN, access control lists, or other network settings that prevent communication if there is an IP address server on your network.

Where no address server exists, use SyncThru or the control panel and select “Static IP Address

Assignment Method”. Then set the IP address, subnet mask, and default gateway in the printer with SyncThru, control panel, or browser methods.

(see Operating Instructions).

Print server does not use TCP/IP protocol.

Unable to print in a NetWare environment.

Printer name does not show when a port is added.

Printer does not operate.

• Ensure that the TCP/IP protocol is installed and correctly configured in your PC.

•

Ensure that your PC is on the same network with the print server. IP addresses and subnet masks must be set correctly in the PC AND the printer.

Use SyncThru to see if PortThru shows, if the queue is serviceable. If not, login permissions may have changed, or the configuration information for queue’s printers and print servers may have changed. Verify with PCONSOLE and NWADMIN that the configuration is correct. Then check the job queue to see if the print job exists.

Ensure that NetWare is enabled on PortThru.

•

Ensure that the protocol settings on your computer are correct.

•

Assign an IP address to PortThru with the operation panel, SyncThru, or browser (see

Operating Instructions).

B273 4-46 SM

4.12.2 WINDOWS PROBLEMS


Print server name does not show under new print server in SyncThru after you install

PortThru.

1. Ensure that the power switch is turned on and the ‘READY’ message shows on the operation panel.

2. Ensure that the LAN cable is plugged into the PortThru card.

3. There are 2 LEDs on the PortThru card. One should flash and the other should stay on. Ensure that the network card is correctly installed and the PCB cable makes a good connection if this is not the case. If the problem persists, check the network cable/socket with a different cable or socket. Replace the network card if the problem still persists.

4. Ensure that the print server and the

PC that searches for the new print server are on the same LAN.

Print server name shows, but the test page does not get printed.

Print the network configuration. Turn the printer off if the network menu does not show, or if the configuration page does not print.

Ensure that the network card is correctly installed. Then turn the machine on again.

Replace the network card if the problem persists.

Before upgrading the machine firmware, use the ping command to ensure that the printer and computer can communicate.

SyncThru shows the firmware upgrade is complete. The software version however does not show the firmware upgrade when the network configuration is printed.

SyncThru is unable to automatically detect the printer.

(continued on next page)

1. Ensure that the LAN cable is connected to the printer. Ensure that the ping command can see the printer if an IP address is assigned to the computer and the printer.

2. Print the network configuration.

Enable the TCP/IP or network protocols if they are disabled, or ensure the DLC/LLC protocol is installed on the computer.

3. In SyncThru, use the

Settings/Protocol selection menu option to select either TCP/IP or IPX protocols. Then use the View/Refresh option to scan the network again.

4. Ensure that the network cable and wall socket function correctly.

5. Ensure that the SyncThru version is the same as or newer than the version sent with the printer.

SM 4-47 B273

NETWORK PROBLEMS


6. Ensure that there is no router between the printer and the computer. SyncThru cannot work through a router.

7. Ensure that there are no switch or router VLAN or access control lists that block communication between the printer and the computer.

(NOTE: Windows XP does not support

DLC/LLC protocols.)

The printer does not print via a network connection.

1. Connect the printer with a parallel or

USB cable. Ensure that the printer drivers are correctly installed if the machine will still not print.

2. Check the printer properties/ports and make sure a TCP/IP port has been allocated to the printer if the machine only prints via a local connection.

4.12.3 SYNCTHRU INSTALLATION PROBLEMS


‘File transfer’ error shows during the installation process.

1. Uninstall any previous versions of

SyncThru. Then restart the computer.

2. Perform the following if the problem persists:

• In Windows 95/98, boot into

MS/DOS mode and delete the

“sammon.dll” file in the windows\system directory.

•

In Windows NT, stop the spooler service with “services” in the control panel and delete the “sammon.dll” file in the windows\system32 directory. Then restart the spooler service and reinstall SyncThru.

B273 4-48 SM


TECH MODE

5. SERVICE PROGRAM MODE

5.1 TECH MODE

Tech Mode allows for checking of the machine and various tests to resolve problems. The machine can still operate normally when Tech Mode.

5.1.1 HOW TO ENTER AND EXIT TECH MODE

Perform the following to enter tech mode:

B273S01 WMFMF

The LED shows “Tech” when the machine enters Tech Mode.

Press the “Menu” button to access the Tech mode menus.

What you can do in Tech Mode:

Function Item

Data Setup Send Level 9-15 dBm

Dial Mode

Modem Speed

Error Rate

Notify Toner

Tone/Pulse

Customer No.

Customer Name

Service No.

Contents

33.6 / 28.8 / 14.4 / 12.0 / 9.6 / 4.8

(K bps)

5% / 10%

Clear All Memory

Clear Count

Serial No.

Select Country ( 5.5)

Enter Password

(1934 enter)

Total Page CNT

FLT Scan CNT

ADF Scan CNT

Machine Test

Flash Upgrade

Silence Time

Ignore Toner

Switch Test

Modem Test

Dram Test

Rom Test

Pattern Test

Shading Test

Used Toner CNT

Local / Remote

12 Sec / Unlimit / Off

On /Off

OK / NG

Flash / Engine versions

5.1.3

Report

System Data System Data List

SM 5-1 B273

TECH MODE

5.1.2 DATA SET-UP

Send Level

Send level sets the level of the transmission signal. The Tx level should normally be under -12 dBm.

The send fax level is set to the best condition during manufacture. This should not be changed in the field.

Dial Mode

Select the dialing mode according to the user's line status.

• TONE: Electrical type of dial

• PULSE: Mechanical type of dial

Modem Speed

Modem speed sets the maximum modem speed. The value of the maximum modem speed is checked for both transmitter and receiver when the fax connects with a remote set. The lowest value is used. It is best set at 33.6Kbps (default).

Error Rate

The Baud rate automatically adjusts to 2400 bps when the error rate goes past the set value. This ensures that the error rate stays below the set value.

You can select the rate between 5% and 10%.

Notify Toner

With this feature enabled, when the toner becomes low the “toner low” information will be sent to a specified contact point (for example, the service company). After accessing this menu, select ON. When the LCD-prompts, enter the name and the number of the contact point, the customer's fax number, the model name, and the serial number.

B273 5-2 SM

TECH MODE

CLEAR ALL MEMORY

Use this function to reset the system to the default set at the factory.

This function resets the system to the initial value when the machine does not function correctly. Values are set to the default values. The machine will not keep data set by the user. This procedure does not clear the counter data values.

Procedure:

1. Set the [MEMORY CLEAR] in tech mode.

2. Push the ENTER button.

3. The country name will show. You can see all available countries when you scroll by pressing “◄” or “►”

• EU default (UK)

• North America default (USA/Canada)

• Asia default (Singapore)

• China default (China)

Note: You cannot change the default country values.

4. Push the ENTER button. This clears the memory. Then it changes it to the country code that you set.

Note: Perform this procedure after replacing the main board. If this procedure is

not performed, the system will not operate correctly.

Flash Upgrade

The firmware upgrade has these functions:

• Local and remote.

Examine the firmware upgrade section ( 5.3).

Silence Time

In ANS/FAX mode, after a call is picked up by the answering machine, the machine monitors the line. If a period of silence is detected on the line at any time, the call will be treated as a fax message and the machine begins receiving. Silence detection time is selectable between limited (about 12 seconds) and unlimited time.

When “12 sec” is selected, the machine switches to receiving mode as soon as it detects a period of silence. When “unlimited” is selected, the machine waits until the answering operation is concluded even though a period of silence is detected.

After the answering operation is concluded, the machine switches to receiving mode.

SM 5-3 B273

TECH MODE

5.1.3 MACHINE TESTS

Switch Test

Switch Test tests the keys on the operation panel. The result shows on the LCD window when a key is pressed.

Modem Test

Modem Test allows you to hear various transmission signals to the telephone line, from the modem and to check the modem, amplifier, and speaker. The modem part of the main board, amplifier, speaker, or speaker harness is faulty if no transmission signal sound is heard.

DRAM Test

DRAM Test tests the machine's DRAM. The LCD shows ‘OK’ if the memory operates correctly.

ROM Test

ROM Test tests the machine's ROM. The result and the software version show on the LCD display.

• FLASH VER : 1.00 V

• ENGINE VER :1.00V

Pattern Test

The pattern printout is used to ensure that the printer mechanism operates correctly. This function is for factory manufacturing use only.

B273 5-4 SM

TECH MODE

Shading Test

Shading Test sets the optimum scan quality determined by the specific characteristics of the CCD (Charge Coupled Device). Perform the following procedure to check the condition of the CCD unit if copy image quality is poor.

Procedure

1) Select the [Shading Test] in tech mode (Menu, #, 1934).

2) Push the ENTER button and an image will be scanned.

3) CCD shading profile is printed after the image is scanned.

4) The CCD is defective if the printed image is not the same as the sample image shown.

NOTE: Ensure that the cover is

closed when you test the

CCD.

B273S08.WMF

5.1.4 REPORTS

Protocol List

Protocol List shows the sequence of the CCITT group 3 T.30 protocol for the most recent sending or receiving operation. This list allows you to check for send and receive errors.

System Data

System Data shows a list of the user system data settings and tech mode settings.

SM 5-5 B273

USER MODE

5.2 USER MODE

The table below shows functions available to the user. Refer to the Operating

Instructions for further details.

Function Item Contents

1. Paper Setting Copy Tray Auto tray / MP tray

Fax Tray Auto tray / MP tray

Paper Size Tray Paper

MP Paper

A4 / A5 / B5 / A6 / LTR /

LGL / Executive / Folio

A4 / A5 / B5 / A6 / LTR /

LGL / Executive / Folio

Machine Set-up Machine ID

Date & Time

Clock Mode

Fax / ID

DMY

12 / 24 hour

3. Copy Setup

4. Fax Setup

5. Fax Feature

6. Advanced Fax

Power Save

Scan PWR Save

Ignore Toner

Import Setting

Export Setting

Scan Time Out

Default Change Darkness

Original type

On / Off

0.5 / 1 / 4 / 8 / 12

On / Off

Phone book / All setting

Phone book / All setting

Lighten / Normal / Darken

Text / Photo

Photo

Timeout

Receive Mode

Ring to Answer

Text

Reduce / Enlarge Original / LGL->LTR

Number Of Copies 1-99

15 / 30 / 60 / 180 / off

Fax / Tel / Ans /Fax

1-7

Darkness

Redial Term

Lighten / Normal / Darken

1-15

Redials 0-13

MSG Confirm.

Auto Report

On / Off / On-Err

On / Off

Auto Reduction

Discard Size

RCV Start Code

DRPD Mode

Delay Fax

Priority Fax

On / Off

0-30 MM

0-9

Set (On / Off)

Enter number

Enter number

Add Page

Send Forward

RCV Forward

Junk Fax Setup

Secure Receive

Prefix Dial

Stamp RCV Name

ECM Mode

On / Off

On / Off

On / Off

On / Off / Print

Enter number

On / Off

On / Off

B273 5-6 SM

Function Item Contents

7. Reports Phone Book

Sent Report

RCV Report

Phone Book List

Transmission Journal

Reception Journal

8. Network Setup

9. Sound / Volume

System Data

Scheduled Jobs

MSG Confirm

Junk Fax List

Scan Journal

Reset Network

Config Network

Set to Default

Print net CFG

Speaker

Ringer

Key Sound

Alarm Sound

System Data List

Schedule Information List

Message Confirmation

Report

Junk Fax List

Yes/No

TCP/IP

Yes/No

Yes/No

On / Off / Comm.

Off / Low / Med / High

On / Off

On / Off

0. Maintenance Clean Drum

Auto Cleaning

Notify Toner

Clear Settings

Network Scan

Yes/No

On / Off

On / Off

All/Paper/Copy/Fax/Fax features/Advanced fax/Send report/RCV report/Phonebook/Scan journal

Enable / Disable

SM 5-7 B273

FIRMWARE DOWNLOAD

5.3 FIRMWARE DOWNLOAD

The “Printer Setting Utility” can be used by connecting the machine to a PC through a parallel or USB cable, or via Web Image Monitor through a network, to upgrade the machine firmware.

5.3.1 DOWNLOAD PROCEDURE

NOTE: Do not turn off the machine power while updating the firmware.

Printer Setting Utility Mode

This procedure is used when the machine is connected via a parallel port or USB port to a PC. The machine uses the Printer Setting Utility software to upgrade the firmware.

1. Print out the System Data list, as a precaution, to back up system data and settings.

2. Connect the PC and printer with parallel cable or USB cable.

3. Perform the Printer Setting Utility and set the Firmware Update tab. Current firmware version and emulation version are shown.

4. Save the firmware file on the PC, in a path near the root of C:(ie, C:\TEMP).

Use the “Browse” button to obtain the firmware file, to update the machine.

5. Click the “Update” button. The firmware file automatically downloads to the printer. The printer is initialized when the update has completed. Ensure that the following appear on the LCD display when downloading the new firmware:

1) DATA RECEIVING (USB) / COPY/B FILE LPT1 (PARALELL)

2) PC TO DRAM IS OK

3) FLASH IS ERASING

4) FLASH PROGRAMMING

5) CHECKSUMMING

6) DOWNLOAD OK

7) Warming up Please wait…

6. Click the “Refresh” icon. Ensure that the version number shown matches the new firmware.

Note: The country code will not change after downloading the new firmware.

B273 5-8 SM

Web Image Monitor Mode

1. Print out the System Data list, as a precaution, to back up system data and settings.

2. Download the firmware onto the PC.

NOTE: 1) Ensure that both the “Printer Firmware” and “Network Firmware” are

downloaded, if both are to be updated.

3. Access Web Image Monitor, using the correct IP address.

4. Select “Maintenance”, as shown below:

B273

B273S03.TIF

SM 5-9 B273

FIRMWARE DOWNLOAD

5. Ensure that “Printer Firmware” [A] is selected, as shown below.

NOTE: Proceed to step 9 if only the “Network Firmware” is to be upgraded.

[A]

B273S04.TIF

6. Click the “Browse” button, and select the printer firmware file saved on the PC.

7. Click the “Upgrade” button.

8. Ensure that the firmware is completely updated.

B273 5-10 SM

9. Ensure that “Network Firmware” [B] is selected, as shown below.

[B]

B273S05.TIF

10. Click the “Browse” button and select the network firmware file saved on the PC.

11. Click the “Upgrade” button

12. Ensure that the firmware is completely updated.

5.3.2 FIRMWARE RECOVERY PROCEDURE

The machine will not operate if the update procedure did not function correctly. In this case, perform the following steps:

1. Turn the power off and then on.

2. Repeat the steps in download procedure 5.3.1 (Web Image Monitor Mode).

The machine will restart the upgrade procedure.

SM 5-11 B273

ENGINE TEST MODE

5.4 ENGINE TEST MODE

The Engine Test Mode checks the condition of the print engine. It tests the condition of each device, and shows the result of the test on the LCD. The Engine

Test Mode is divided into 5 functions (0~4).

5.4.1 HOW TO ENTER ENGINE TEST MODE

Perform this procedure to enter Engine Test Mode:

Press Menu

→ # → 1 →9 → 3 → 1 in sequence. 'TECH' will appear on the LCD. The machine will then enter Engine Test

Mode.

Use the operation panel arrow keys to navigate the Engine Test Mode menus.

Press the “Clear/Stop” button to exit Engine Test Mode.

B273 5-12 SM

ENGINE TEST MODE

5.4.2 ENGINE TEST MODE TABLE

0

Test

Number

Sub Number Engine test

1

2

3

4 1

2

3

2

3

1

1

2

3

4

5

1

2

3

4

5

1

2

3

4

4

5

6

Remark

Motor test

Pick-up test

Fan test

Manual CLT test

PTL test

LSU motor test

LSU Hsync test

LD test

Feed sensor test

1: On, 2: Off. Next test selected








1. Check: Read the sensor

2. Next: Next sensor test

Exit sensor test

Cover sensor test

Empty sensor test







1. Check: Read the sensor Manual sensor test

Therm ADC 180

Therm ADC 140

Therm ADC 120

Therm ADC 100


1: On, 2: Off. (maintain the fusing temperature 80 ° C)




1: On, 2: Off. (-1550 ±50V)

1: On, 2: Off. (-430 ±20V)

MHV test

Dev bias test

THV EN/NEG test

THV ON 1300 V

THV ADC 1300 V

1: On, 2: Off. (-1200 +300/-

150V)

1: On, 2: Off. (+1300±20V)

1: On, 2: Off. (ADC value

101±5V)

THV ADC 600-3500 V 1: On, 2: Off. (Compare ADC value)

SM 5-13 B273

ENGINE TEST MODE

Detailed Description (Engine Test Mode)

Function name

01. Motor test

02. Pick-up test

03. Fan test

04. Manual clutch test Tray 2, 3 clutch stays on for 1 second and then automatically turns off when execute is selected. The main motor runs 2 seconds before to check the clutch condition.

05. PTL (Pre-Transfer

Lamp) test

11. LSU motor

12. LSU Hsync test

The PTL lights when the execute key is pressed and stops when the stop key is pressed.

The laser motor starts when the execute key is pressed and stops when the stop key is pressed.

The LSU motor starts and ‘Laser

Ready’ appears, if the motor spins at the correct speed. Otherwise ‘Laser

Error’ is shown.

13. LD test

21. Feed sen test

22. Exit sen test

‘Diode On’ shows when the laser diode is on. Otherwise, “Diode off” is shown.

These show the current state of the sensor.

23. Cover sen test

24. Empty sen test

25. Manual sen test

31. Therm ADC 180

32. Therm ADC 140

This shows the current state of the cover sensor. Touch the sensor to confirm that the message changes from “Cover Open” to “Cover

Closed”.

These show the current state of the sensor.

33. Therm ADC 120

34. Therm ADC 100

41. MHV test

42. Dev bias test

“Current Value” appears on the upper line of the LCD. “Target Value” appears on the bottom line.

(Target value is limited to between

80

°-191° C.)

These functions ensure that the

HVPS is functioning correctly.

43. THV EN/NEG test

44. THV ON (1300V)

45. THV ADC (1300V)

46. THV ON 600-

3500V

Description

The motor starts when you press the execution key is present, and stops when the stop key is pressed.

Automatically stops when execute is selected.

The fan starts when the execution key is pressed and stops when the stop key is pressed.

Display

Main motor on/off

Tray 1, 2 solenoid on/off

Fan on/off

Tray 2, 3 clutch on/off

PTL on/off

Laser motor on/off

Laser ready on/off

Diode on/off

Sensor “off” or sensor “on”

Cover “open” or cover “close”

Sensor “off” or sensor “on”

Target temperature and output temperature from thermistor and ADC.

MHV on/off

Dev bias on/off

THV EN/NEG on/off

THV on/off

ADC value shows

ADC value shows

B273 5-14 SM

ENGINE TEST MODE

5.4.3 STATUS PRINT

When this function is enabled, a group of parameters are printed at the bottom of each page. These parameters show the print engine condition. Generally, this function is not necessary for service use.

This setting remains on after exiting Engine Mode. Ensure that, if this function is

used, it is set back to “off” after activities are complete.

SM 5-15 B273


PRINTER COMPONENT LAYOUT

6.1 PRINTER COMPONENT LAYOUT

6.1.1 FRONT VIEW

[B]

[A]

[C]

[M]

[D]

[E]

[L]

[F]

[K]

[J]

[I]

[A] ADF

[B] Document guides

[C] Input tray

[D] Output tray

[E] Operation panel

[F] Front output tray (face down)

[G] Optional paper tray unit

B273D01.WMF

[H]

[H] Paper level indicator

[I] Front door

[J] By-pass tray

[K] Standard paper tray unit

[L] Paper output extension

[M] USB flash drive port

[G]

SM 6-1 B273

PRINTER COMPONENT LAYOUT

6.1.2 REAR VIEW

[A]

[B]

[K]

[C]

[D]

[E]

[J]

[F]

[I]

[H]

B273D02.WMF

[G]

[A] Face-up door

[B] Control board cover

[C] Network port

[D] Parallel connector

[E] USB connector

[F] Optional paper feed tray connector

[G] External jack

[H] Line jack

[I] AC power connector cord

[J] Power switch

NOTE: The external jack may not be available for use if your country has a unique

or different than the typical telephone system used by most countries.

B273 6-2 SM

6.2 SYSTEM LAYOUT

6.2.1 PAPER FEED

The paper tray unit and the manual by-pass unit automatically feed paper to the machine. A friction pad separates the paper and ensures that paper is fed one sheet at a time.

A sensor checks when the paper tray is empty. At this time a message appears on the operation panel. (There is no Paper Near End Sensor in this machine.)

• Feeding Method: Universal Cassette Type

• Feeding Standard: Center Loading

• Feeding Capacity: Cassette-250 sheets (75g/m2, 20lb paper standard)

• Manual: 1 sheet (paper, OHP, envelop, etc.)

• Paper detecting sensor: Photo sensor

• Paper size sensor: None

6.2.2 TRANSFER ASSEMBLY

The transfer assembly consists of the PTL (Pre-Transfer Lamp) and the transfer roller. The PTL sends light to the OPC drum. This light lowers the charge on the drum’s surface, and improves transfer efficiency. The transfer roller moves toner from the OPC drum surface to the paper.

6.2.3 DRIVE ASSEMBLY

The drive assembly is a gear-driven power unit. The motor supplies power to the following:

• Paper feed unit

• Fusing unit

• Toner cartridge

SM 6-3 B273

SYSTEM LAYOUT

6.2.4 FUSING ASSEMBLY

The fusing unit consists of the following.

• Fusing lamp

• Hot roller

• Pressure roller

• Thermistor and thermostat

The fusing unit uses pressure and heat to melt toner into the paper.

Thermostat

The thermostat cuts power to the fusing lamp to avoid machine overheat. Power is cut when the thermostat temperature reaches 160

° C.

Thermistor

The thermistor detects the surface temperature of the hot roller. This information goes to the main processor, which uses this information to regulate the temperature of the hot roller.

Hot Roller

The fusing lamp heats the surface of the hot roller. Toner is melted into and remains on the surface of the paper as the paper passes between the hot roller and pressure roller. The surface of the hot roller is coated with Teflon to ensure that toner does not remain on the roller surface.

Pressure Roller

The pressure roller is mounted under the hot roller. It is made of a silicon resin, and the surface of the roller is coated with Teflon. This ensures that toner does not remain on the roller surface.

Safety Features

The machine has the following countermeasures to prevent overheating:

1. 1st protection device: Hardware is disabled when the machine temperature reaches 207

° C.

2. 2nd protection device: Software is disabled when the machine temperature reaches 220

° C for 3 seconds.

3. 3rd protection device: The thermostat measures the temperature of the hot roller, and disables main power to the fusing lamp when the temperature reaches a pre-determined level.

Safety Devices

1. Fusing power is cut when the front cover is opened.

2. LSU power is cut when the front cover is opened.

3. The temperature of the fusing units cover surface remains at less than 80ºC.

This protects the user. A caution label is attached where the customer can see it easily when the rear cover is opened.

B273 6-4 SM

6.2.5 SCANNING UNIT

The image is read using a photosensitive sensor. The scanning unit consists of the following:

• CCD module

• Connection board

• ADF board

• AFE (Analog Front End)

• Image Processor (located in CPU)

• Platen glass and ADF mechanism

CCD Module Specifications:

• Resolution: 600dpi/A4

• Maximum scan width: 8.5”

• Color filter: Red, Green, Blue

• Output channel: 3 channels (R, G, B)

• Effective pixel: 5,400 pixels

• Voltage: 24V & 5V

• Pre-heating time: Maximum 30 seconds (70% of light output reached)

• Life span of the lamp: 30,000 hours (25° C)

6.2.6 LASER SCANNING UNIT (LSU)

The laser-scanning unit converts video data received from machine control into an electrostatic latent image on the surface of the OPC drum. This is achieved by controlling the laser beam and exposing the surface of the OPC drum to the laser light.

The polygon mirror reflects the laser light onto the OPC. Each side of the mirror is one scan line. The OPC drum turns as the paper feeds, to scan the image down the page.

SM 6-5 B273

SYSTEM LAYOUT

6.2.7 TONER CARTRIDGE

[A]

[B]

[C]

-950V

-430V

[D]

-580V

[F]

[E]

B273D05.WMF

[A] Charging roller

[B] OPC drum

[D] Doctor blade

[E] Supply roller

[C] Developing roller [F] Transfer roller

The toner cartridge contains the OPC unit and toner unit. The OPC unit consists of the OPC drum and the charging roller. The toner cartridge unit consists of the toner, supply roller, developing roller, and doctor blade.

There is no Toner Near End sensor in the machine. However, the machine has a

Toner Remaining Amount Sensor.

A cleaning blade is used to collect used toner.

• Developing method: Non-magnetic, one-element contacting method

• Toner: Non-magnetic, one-element shatter-type toner

• Toner life span: 5,000 sheets (IDC Pattern/A4 standard)

• OPC cleaning: Electrostatic process

B273 6-6 SM

6.2.8 NEW AIO DETECTION

Each AIO cartridge has an ID chip. The machine detects a new cartridge has been installed when the ID chip is detected.

When a new cartridge is installed in the machine, the machine automatically detects, via the chip, that the cartridge is new. The machine then resets the total dot counter (TOTAL TONER COUNT) and CRU print counter (Cru Prints), and increments the counter for counting the number of CRU replaced (Replaced Toner

Counts). Only in the case of the “Replaced Toner Counts” being at 0, the CRU currently installed is regarded as a starter CRU. In this situation, threshold to detect toner end is shorter than that for supply CRU.

6.2.9 TONER END DETECTION

The machine does not have a Toner End Sensor. The machine checks the amount of toner via software. The machine counts and adds up black dots as toner consumption. For example, the following occurs when the machine prints 5% of black rate chart:

• Starter cartridge: Approx. 4, 750, 000, 000 dots will be added.

• Supply cartridge: Approx. 7, 500, 000, 000 dots will be added.

When the total number of dots reaches a pre-programmed figure (the same as for

Toner Near-End), the machine shows “TONER LOW”. After another period of dots has been counted up, the machine finally shows “TONER EMPTY” (the same as for Toner End), and the machine stops printing.

You can check the total dot counts from the current cartridge in the System Data

List in “TECH” Mode.

SM 6-7 B273

CONTROLLER

6.3 CONTROLLER

6.3.1 MAIN PBA

The Main PBA consists of the following components:

1 Image Processor

2 Processor ASIC

3 Flash Memory-Code

High

4 Flash Memory-Code

Low

5 Flash Memory-PCL6

High

6 Flash Memory-PCL6

Low

7 SDRAM

8 SDRAM

9 Modem

10 SRAM

11 Motor Driver

12 Motor Driver

13 USB

14 CMOS-Logic

15 CMOS-Logic

16 Panasonic

17 Varta

18 FPGA

19 A/D Convertible

21 Line Transceiver

22 VEDIC X-TAL

25 USB host X-TAL

29 Jack DIN

The Engine Board and Controller Board are both on a single PBA and consist of the following.

• CPU

• Printer scanner

• Line control functions

The CPU functions as the bus controller, I/O handler, motor driver, and PC interface. The Main Board sends the image video data to the LSU and manages the electrophotographic printing process.

Circuits on the PBA drive include the following:

• Main motor (paper feed, cartridge, fusing)

• Clutch driver

• Pre-Transfer Lamp driver

• Fusing lamp driver

• CCD driver

• Scan motor driver

• Modem

• Fan driver.

The signals from the Paper Feed Jam Sensor and Paper Empty Sensor are input to the Main Board from the Power Supply PBA.

B273 6-8 SM

6.3.2 ASIC

CONTROLLER

A 32Bit RISC processor executes printer and fax functions.

Main Function Block

• Fully integrated system for embedded applications

• LSU interface module, to interface with the PVC or HPVC

• 2-channel, general-purpose DMA controller for high speed I/O

• Dual memory bus architecture

• Operation frequency: AHB bus: 60MHz. Internal system Bus: 120MHz.

• Operation voltage: 3.3V

• Power on reset time: Less than 5.6 ms

6.3.3 MEMORY

The machine has Flash ROM and DRAM memory units. There are 2 SODIMM sockets to allow for additional DRAM or Flash ROM (Postscript Option) installation.

• Capacity :16 MB

• Access Time : 100nsec

6.3.4 FLASH MEMORY

• Records/downloads system program from the PC Interface

• Fax for journal list

• Memory for one-touch dial

• Speed dial list:

• Size : 4M Byte

• Access Time :70 nsec

6.3.5 SDRAM

SDRAM is used for the following:

• Swath buffer in printing

• Scan buffer in scanning

• ECM buffer in fax receiving

• System working memory area:

• Size: 32MB

• Max Frequency: 133MHz

6.3.6 BATTERY BACKUP

Backup power is provided by a 3.6V rechargeable lithium battery. This battery provides power to the SDRAM, to retain faxes in memory when main power is cut.

The backup power will last up to 43 hours. The battery requires 48 hours to charge.

SM 6-9 B273

CONTROLLER

6.3.7 SENSOR INPUT CIRCUIT

Paper Empty Sensor

The Paper Empty Sensor (photointerrupter) is monitored by the CPU signal

“nP_EMPTY”. The machine shows a message on the LCD when the cassette is empty.

By-pass Tray Sensor

Paper in the By-pass Tray is detected by operation of the By-pass Sensor

(photointerrupter). The CPU monitors signal “MP_EMPTY” to recognize paper in the by-pass tray. Paper is fed from the by-pass tray if there is paper present in the by-pass tray

.

Paper Feed Sensor

When paper passes the actuator on the Feed Sensor, it is detected by the photointerrupter signal “nP_FEED”. The signal is monitored by the CPU, and starts the process of creating the image after a specific time delay. Jam0 shows on the operation panel if the Feed Sensor is not detected within 1 sec. after paper is fed.

The toner cartridge also operates the Paper Feed Sensor when it is inserted into the machine. A message shows on the operation panel if no cartridge is detected.

Paper Exit Sensor

An Exit Sensor on the Engine Board and an actuator on the frame detect when the paper exits cleanly from the machine. The sensor checks the signal “P_EXIT” and detects the on/off time of the Exit Sensor. Jam2 shows on the operation panel if a jam status is detected.

Cover Open Sensor

The Cover Open Sensor actuator is located on the front cover, (the sensor is located in the mainframe). Power (+24V) is cut to the following when the front cover is opened:

• DC fan

• Solenoid

• Main motor

• Polygon motor part of LSU

The CPU monitors signal COVER_OPEN to recognize when the cover is opened

.

DC Fan/Solenoid Driving

These are driven by a transistor and controlled by the signal “FAN SMPS, CON2-

23 bit” of the CPU. The fan is activated by turning the transfer roller when the signal is high. The fan is deactivated when sleep mode is selected.

There are two solenoids and both are driven by the paper pick-up and MP signals.

The drive time is 300ms. A diode protects the driving TR from the back-EMF pulse, which is generated when the solenoid is de-energized.

Motor Driving

The motor driving circuit is activated when the driver IC is enabled. The resistance value of sensing and the voltage value of the V reference can be changed via the motor driving voltage value.

B273 6-10 SM

6.4 SMPS AND HVPS

The SMPS (Switching Mode Power Supply) and HVPS (High Voltage Power

Supply) are located on the same board. The SMPS supplies either 110V or 220V

DC power to the system, and outputs +5V, +12V and +24V supplies to the Main and other PBAs.

The HVPS creates the high voltage of THV/MHV/Supply/Dev, and supplies it to the toner cartridge. The CPU modifies some of these voltage settings to provide the ideal voltages to create the image. The HVPS uses the 24V, and outputs the high voltage for THV/MHV/BIAS.

Output high voltage is supplied to the following:

•

•

•

Toner

OPC cartridge

Transfer roller

SM 6-11 B273

SMPS AND HVPS

6.4.1 HVPS

The HVPS supplies the following voltages to the machine:

Transfer High Voltage (THV+):

This voltage transfers toner from the OPC drum to the paper.

• Output voltage: +1300V DC ±20V

• Failure Symptom: Low-density printing occurs due to toner on the OPC drum that was not transferred to the paper due to THV (+) not present. If this condition persists, waste toner over-flow can occur. Ghost images may appear which repeat at 76mm intervals.

Charge Voltage (MHV)

This voltage charges the surface of the OPC from –900V to –1000V.

• Output voltage: –1550V DC ± 50V

• Failure Symptom: Toner particles are transferred to the whole OPC drum surface if MHV is not present due to the OPC drum surface having no charge. In this condition, a black page is printed out.

Cleaning Voltage (THV-):

This voltage removes toner contamination from the rear-side of the paper by sending negative polarity to the transfer roller. This forces toner to transfer back to the to OPC drum.

• Output Voltage: –1200V, +300V/–150V

• Failure Symptom: Smudges and toner contamination appear on the reverse side of the printed page.

Developing Voltage (DEV):

This voltage develops the toner on the section of the OPC drum surface exposed by the LSU.

At printing, the exposed voltage on the OPC is –180V. Unexposed voltage is –900 to –1000V. The exposing voltage on the DEV is –430V. Therefore, toner with negative polarity is developed onto an exposed section of the OPC.

• Output voltage –430V DC ± 20V

• Failure Symptom:

• Print density becomes extremely light if DEV is GND.

• Print density becomes extremely dark when DEV is “floating”, due to poor connection between the frame and cartridge contacts, etc.

B273 6-12 SM

Supply Voltage (SUP):

This voltage supplies toner to the developing roller.

• Output voltage: –580V DC ± 50V (Use ZENER, DEV Gear)


• Print density becomes extremely light when SUP is GND.

• Print density becomes extremely light if SUP is “floating”, due to poor connection between the frame and cartridge contacts, etc. In this situation prints are difficult to see.

OPC Ground ZENER Voltage:

This voltage prevents image contamination under low temperature and low humidity environmental conditions. The ZENER diode is connected to OPC ground when a set prints without an output voltage of –130V. DC ± 15V is maintained.


• There is no serious image problem in the general environment when the

ZENER diode is –0V. However, contamination can still occur on the entire image in low temperature and low humidity environments.

• A blank page is printed out when the ZENER diode is disconnected.

SM 6-13 B273

3

SMPS AND HVPS

6.4.2 SMPS(SWITCHING MODE POWER SUPPLY)

SMPS is the power source for the entire system. It is mounted at the bottom of the machine and consists of the SMPS area, which supplies DC power to drive the system. SMPS also supplies power to the AC heater control area, which supplies the power to the fusing unit. The SMPS has four output channels (+5V, +24V, and

24VS).

The SMPS supplies the following power types:

• North America: 120V

• Europe: 220V

• China (and nations with unpredictable power sources): 220V

1. AC Input

• Input rated voltage : AC 220V ~ 240V, AC 120V / AC 220V

• Input voltage fluctuating range : AC 198V ~ 264V, AC 90V ~ 135V, AC 198V ~

264V

• Rated frequency : 50/60 Hz

• Frequency fluctuating range : 47 ~ 63 Hz

• Input current : Under 5.0A/2.5A (when the fusing lamp is off and input/output voltages are in range)

2. Rated Output Power

4

5

6

7

8

No Item CH2

1 Channel +5V

2 Connector pin Con 23

5V pin: 3, 4

GND pin 5-7

+5V and 5%

(4.75 to 5.25V)

Maximum output current 0.14A

Peak loading current 0.14A

Ripple noise voltage 100mV

Maximum output power 0.35W

Peak output power 0.7W

3. Power Consumption

No Item CH2 (+5V)

CH3

+24V

Con 23

24V pin: 11-13

GND pin 9, 10,18

+24V and 10%

(21.6 to 26.4V)

2.0A

2.5A

Under 500Mv

48W

60W

CH3 (+24V)

Remark

1ms

1ms

Remark

Energy saver mode

B273 6-14 SM

4. Length of Power cord

• 1830 ±50mm

5. Power Switch:

• Fitted

6. Features

• Insulation resistance : over 50M Ω(at DC500V)

• Insulating retest pressure : No issues if within 1min. (at 1500Vzc, 10mA)

• Leakage current : under 3.5mA

• Operating current : under 40A peak (at 25°c, cold start), under 60A peak (in other conditions)

• Rise Time : Within 2Sec

• Fall Time : Over 20ms

• Surge : Ring Wave 6KV-500A (Normal, Common)

7. Environment Condition

• Operating temperature range : 0°C ~ 40°C

• Storage temperature range : -25°C ~ 85°C

• Storage humidity range : 30% ~ 90% RH

• Operating atmospheric pressure range : 1

8. EMI Requirement

• CISPR ,FCC, CE, MIC, C-Tick

9. Safety Requirement

• IEC950, C-UL, TUV, Semko, iK, CB, CCC, EPA,

SM 6-15 B273

SMPS AND HVPS

6.4.3 FUSING UNIT AC POWER CONTROL

The fusing lamp is heated via AC power and is controlled by a triac (THY1).

“On/Off control” is achieved when the gate of the triac is turned on/off by a phototriac (PC1). The phototriac also acts as an insulting component.

The fusing heat lamp is turned on/off when it receives a signal from the Engine

Control section. The phototriac LED flashes when the “HEATER ON” signal is activated by the engine. The flashing light causes the triac to switch, and supplies a voltage to the gate of triac. As a result, AC current is then supplied to the fusing lamp, and heat is produced.

On the other hand, when the signal is off, the phototriac is off. At this time, the voltage is cut at the gate of triac. In this situation, the triac is off and no heat is supplied to the fusing lamp.

• Triac (THY1): 12A, 600V SWITCHING

• Phototriac Coupler (PC3): 15mA ~ 50mA(Design: 16mA)

B273 6-16 SM

6.5 ENGINE

6.5.1 PAPER FEED

ENGINE

Jam0 (feed area)

Jam0 occurs at the following times:

• Paper does not enter the unit due to a paper misfeed after a page was picked up.

• Paper entered, but did not reach the Feed Sensor in a specific time interval due to slip, etc. after a page was picked up.

• A page was picked up, but the Feed Sensor is not on. Jam0 appears if the Feed

Sensor is still not on after a specific time interval after the Feed Sensor tries again. This means that the leading edge of the paper didn't pass the Feed

Sensor within a specific time interval.

• The Feed Sensor does not turn on even though the paper reaches the Feed

Sensor. This means that the leading edge of the paper already passed the Feed

Sensor, or that the sensor is faulty.

Jam1 (inside the machine)


• The trailing edge of the paper does not pass the Feed Sensor within a specific time interval after the leading edge of the paper passes the Feed Sensor. (During this time, the Feed Sensor cannot be Off.)

• The paper does not reach the Exit Sensor within a specific time interval after the leading edge of the paper passes the Feed Sensor. (The exit sensor cannot be

On during this time.)

• There is already paper between the Feed Sensor and the Exit Sensor.

Jam2 (exit area)


• The trailing edge of the paper does not pass the Exit Sensor within a specific time interval after the trailing edge of the paper passes the Feed Sensor.

SM 6-17 B273

ENGINE

6.5.2 DRIVE

The Main Motor drives the following:

• Paper feed unit

• Developing unit

• Fusing unit

Software drives the Main Motor and controls the motor acceleration, motor speed, and motor de-celeration. The motor is managed via an A3977 driver IC and is controlled by signals from the CPU.

6.5.3 TRANSFER

The charging voltage, developing voltage, and the transfer voltage are controlled by PWM (Pulse Width Modulation). Each output voltage is variable according to the

PWM duty cycle. The transfer voltage used when the paper passes the transfer roller is decided by environment recognition. The resistance value of the transfer roller changes due to the surrounding environment in the room or within the set.

This change in resistance in turn changes the value of the voltage, due to loading.

This voltage is fed back into the set through the A/D converter. Based upon this fed-back value the PWM cycle is changed to maintain the required transfer voltage.

6.5.4 FUSING

The temperature of the heat roller's surface is detected from the resistance value of the thermistor. The thermistor resistance is measured with the A/D converter. This allows the CPU to determine the temperature of the heat roller.

The AC power is controlled by comparing the target temperature to the value from the thermistor. An error appears if the value from the thermistor is out of the control range during the fusing process. The table below shows the error conditions.

Error Description

Open heat error

The temperature remains lower than 68 during warm-up.

° C for more than 25 seconds

Low heat error

Over heat error

Standby: The temperature remains lower than 100 ° C for more than 25 seconds.

Printing:

1. The temperature remains lower than 145

° C for more than 5 seconds for 2 consecutive pages

2. The temperature remains 40

° C lower than the fixed fusing temperature for more than 4 seconds, for 3 consecutive pages.

The temperature remains higher than 220

° C for more than 3 seconds.

B273 6-18 SM

6.5.5 LASER SCANNING UNIT

OPERATION PANEL (OPE)

The LSU consists of the LD (Laser Diode) and the polygon motor control. When a printing signal is received, the LD is turned on and the polygon motor is enabled.

When the light sensor detects the beam, HSync occurs. When the polygon motor speed reaches target, LReady occurs. If these two conditions are satisfied, the status bit of the LSU controller register becomes one and the LSU is determined by control logic to be ready.

6.6 OPERATION PANEL (OPE)

The OPE consists of various function keys and an LCD to show machine status and messages.

A MICOM (HOLTEC HT48R50) drives the LEDs and LCD. Communication between the OPE and the CPU on the Main Board is serial (related signals are

/Reset, TXD, and RXD).

SM 6-19 B273

USB HOST

6.7 USB HOST

The USB Host PBA provides power to the USB connector. This enables the USB memory drive to use the following functions:

• Direct printing

• Scan to USB functions

6.8 FAX SECTION

6.8.1 MODEM

• Group 3 facsimile modem

• External handset support (not supported on this machine)

• Requires Discrete Line Interface Unit (LIU )

• V.34 Half-Duplex Mode (modulation method used at Fax transmission)

• V.90 PCM/V.34 Duplex Data Modes (data modem only)

6.8.2 LIU PBA

The LIU board is the line interface unit and consists of the following:

• Tel_line

• Interface circuit

• Telephone circuit

The Tel_Line circuit consists of the following:

• A matching transfer to conform to the impedance of the receiving telephone line

• A circuit to isolate the fax machine from the PSTN

• A surge absorber to protect against lighting strike surges on the incoming line

The Telephone circuit consists of the ring detection circuit, speech circuit, external hook detection circuit, and recall circuit.

B273 6-20 SM

SPECIFICATIONS

SPECIFICATIONS

SPECIFICATIONS

1. GENERAL SPECIFICATIONS

Configuration Desktop

Paper capacity Main tray 250 sheets

By-pass tray

Optional paper feed unit

Output tray

50 sheets

250 sheets

Face down: 150 sheets

Face up: 1 sheet

Paper size

Paper weight

Paper size

ADF

Main tray

By-pass tray

Main tray

By-pass tray

Maximum

Minimum

Paper weight

A4, Letter, Legal, Folio, Executive, B5

Envelope 63/4, 73/4, #9, #10, DL, C5, B5

60-90 g/m

2

60-163 g/m

(16-24 lb.)

2

(16-43 lb.)

216 x 356mm (8.5 x 14 inch)

76 x 127mm (3.5 inch)

47-105 g/m

2

(12.5-28 lb).

Width

Length

142 x 216mm (5.6x 8.5 inch)

148 x 356mm (5.8 x 14 inch)

SPX/IPX, TCP/IP, Ethertalk, SNMP, HTTP

1.1, DLC/LLC

Machine size (W*D*H)

Weight

450 x 423 x 456 mm (17.7 x 16.7 x 18 inch)

With toner cartridge

15.6 Kg (34.3 lb)

Operation panel

Without toner cartridge

16 x 2 characters

14.8 Kg (32.6 lb)

Interface option

Total Counter

Environmental Standard

Energy Saver Mode

USB 2.0

Electric Counter

US version: Energy Star Tier 1

EU version: BAM specifications

Selectable 1/5/15/30/45/60 minutes

SM 7-1 B273

SPECIFICATIONS

2. PHYSICAL SPECIFICATIONS

Power consumption

Power supply

Printing operation 370 W

Energy saver mode

Power switch

30 W (energy start compliant)

Supported

Low voltage

High voltage

Input frequency

110-127 V

220-240 V

50/60 (± 3Hz)

Noise

Warm up time (from energy saver mode)

Less than 42 seconds

3. PRINT SPECIFICATIONS

Print speed

Energy Save Mode

Resolution

Toner save mode

22 ppm LT

20 ppm A4 (600 dpi)

Printer drivers PCL6

Auto emulation sensing Supported

Font 45 Scalable, 1 Bitmap

5/10/15/30/45 min

Normal 600 x 600 dpi

RET 1200 x 1200 dpi

Supported

First print time

Duplex print

Printable area

Halftone grayscales

From standby

From energy saver mode

Not supported

208 x 273 mm (Letter)

128 levels



B273 7-2 SM

SPECIFICATIONS

4. SCAN SPECIFICATIONS

Scan method

Scan speed through ADF

Scan speed through platen

Resolution

Color CCD

Linearity

Gray

Color

Linearity

Gray

Color

Optical

Enhanced

Approximately 75 seconds (USB 1.1)






600 x 1200 dpi

4800 x 4800 dpi

Scan area

Scan to

Scan depth

Maximum document width

216 mm (8.5 inch)

Effective scan width 208 mm (8.2 inch)

E-mail, Image, OCR, Fax, Web,

Color: 24 bit

Monochrome: 1 bit for line art, 8 bit for grayscale

SM 7-3 B273

SPECIFICATIONS

5. COPY SPECIFICATIONS

Copy resolution

Text

Text/Photo

Photo

600 x 300 dpi

600 x 300 dpi

600 x 600 dpi for platen

First copy time From stanby 10 seconds: Platen

15 seconds: ADF

50 seconds

Copy speed (letter)

From energy saver mode

SDMC (all modes)

MDMC (text 600 x 300 dpi)

MDMC (photo

600 x 600 dpi)

Letter: 22 cpm

A4: 20 ccm

14 cpm

8 cpm

Original alignment

Resolution

Zoom

Multi-copy

Copy mode

ADF Center

Scan 600 x 300 dpi, 600 x 600 dpi

Print 600 x 600 dpi

Platen 25%-400%

ADF 25%-100%

1-99

Text, Mixed, Photo (all supported)

Preset Supported

Darkness control 3 levels (LED)

Collation copy Supported: 600 x 300 dpi

Auto return to default mode

Supported: (off/15/30/60/180 seconds)

Changeable default mode Contrast, image, reduce/enlarge, number of copies

Special copy

Collation copy

Auto fit copy

Supported: (ADF only)

Supported: (Platen only)

Environmental Standard

Energy Saver Mode

2-side copy

Clone



Poster Supported: (Platen only)

US version: Energy Star Tier 1

EU version: BAM specifications

Default 15 minutes

Selectable 1/5/15/30/45/60 minutes

B273 7-4 SM

SPECIFICATIONS

6. TELEPHONE SPECIFICATIONS

Handset No

On hook dial

Search

1 touch dial

Speed dial

Telephone answering device I/F

Supported

Supported (phone book)

40EA (20 x shift). 20 x 2 dedicated keys

200 locations (00-199)

Supported

Tone/Pulse Supported (selected in Tech Mode)

Pause Supported

Auto redial Supporterd

Last number redialed

Distinctive ring

Supported

Supported

Caller ID Supported

External phone interface Supported

Report and list print out Tx/Rx Journal: Supported

Confirmation: Suppoprted

Auto dial list: Suppoprted

System data list: Suppoprted

Sound control Ring volume (Off, Low, Medium, High)

Key volume (On, Off)

Alarm volume: (On, Off)

Speaker (On, Off, Comm)

SM 7-5 B273

SPECIFICATIONS

7. FAX SPECIFICATIONS

Communication system

Modem speed

PSTN/PABX

33.6 Kbps

Compression MH/MR/MMR/JPEG

Color fax

Error correction mode

Resolution

Supported (send only)

Supported

Standard 203 x 98 dpi

Fine

Super fine

203 x 196 dpi

300 x 300 dpi

Scan speed

Duplex fax print out

Multiple page scan

Receive mode

ADF (fine/super fine) 5 seconds/LT

Not supporterd

14 ppm/LT

Fax, TEL, Ans/Fax, DRPD

Memory Capacity 4 MB (optional memory not supported)

Max locaations to store 1 group dial

Fax forward

199 locations

Supported (On, Off)

Functions

Broadcasting

Cover page

Delayed fax

Supported (up to 209 locations)

Supported

Supported

Memory RX

Vioce request

Supported

Not supported

TTI Supported

RTI Supported

Junk fax barrier

Secure receive

Memory back-up

Auto reduction Supported

F/W remote upgrade

Supported

Supported

Supported

Supported (Maximum 43 hours)

B273 7-6 SM

SPECIFICATIONS

8. SOFTWARE SPECIFICATIONS

Operating sytems

WHQL

Drivers

Supported

Windows 95/ME/NT 4.0/2000/XP

Mac: English only web version

Not supported

DOS

Windows 3.x/95

Linux

MFP: Supported: Windows 2000/XP

Printer PCL6

TWAIN Supported

WIA Supported

RCP Supported

PC-Fax Supported (through PC modem and fax S/W)

9. PAPER SIZES/WEIGHTS

Paper Tray

Standard Paper tray

By-pass tray

Supported Paper Sizes

A6, A5, A4, B5, 81/2” x 11”,

81/2” x 13”, 81/2” x 14”

A6, A5, A4, B5, 71/4” x 101/2,

81/2” x 11”, 81/2” x 13”, 81/2” x 14”

Irregular size: 76-216 x 127-

356 mm (3.0” - 8.5” x 5.0” -

14.0”)

Remarks

Plain paper

Plain paper, Envelope,

Transparency, Label, Card,

Post card

Paper Tray

Standard Paper tray

By-pass tray

60-90 g/m

2

60-163 g/m

(16-24 lb.)

2

(16-43 lb.)

Paper Weights

SM 7-7 B273

APPENDIX

APPENDIX

BLOCK DIAGRAM

B273X01.WMF

SM 8-1 B273

CONNECTION DIAGRAM

CONNECTION DIAGRAM

B273X02.WMF

B273 8-2 SM

Ricoh B273 DSm520pf Multifunction Printers Service Manual

Assistant Bot

B273

SERVICE MANUAL

B273

SERVICE MANUAL

It is the reader's responsibility when discussing the information contained within this document to maintain a level of confidentiality that is in the best interest of Ricoh Corporation and its member companies.

NO PART OF THIS DOCUMENT MAY BE REPRODUCED IN ANY

FASHION AND DISTRIBUTED WITHOUT THE PRIOR

PERMISSION OF RICOH CORPORATION.

All product names, domain names or product illustrations, including desktop images, used in this document are trademarks, registered trademarks or the property of their respective companies.

They are used throughout this book in an informational or editorial fashion only and for the benefit of such companies. No such use, or the use of any trade name, or web site is intended to convey endorsement or other affiliation with Ricoh products.

 2005 RICOH Corporation. All rights reserved.

WARNING

The Service Manual contains information regarding service techniques, procedures, processes and spare parts of office equipment distributed by Ricoh Corporation. Users of this manual should be either service trained or certified by successfully completing a Ricoh

Technical Training Program.

Untrained and uncertified users utilizing information contained in this service manual to repair or modify Ricoh equipment risk personal injury, damage to property or loss of warranty protection.

Ricoh Corporation

PRODUCT CODE

LEGEND

COMPANY

GESTETNER LANIER RICOH SAVIN

DOCUMENTATION HISTORY

REV. NO.

*

DATE COMMENTS

B273

TABLE OF CONTENTS

INSTALLATION

PREVENTIVE MAINTENANCE

REPLACEMENT AND ADJUSTMENT

TROUBLESHOOTING

SERVICE PROGRAM MODE

DETAILED DESCRIPTIONS

SPECIFICATIONS

APPENDIX

PRECAUTIONS

SAFETY WARNING

WARNING

SAFETY PRECAUTIONS

ESD PRECAUTIONS

CAUTION

Ensure that no power is applied to the chassis or circuit, and observe all other safety precautions.

INSTALLATION

1. INSTALLATION

PREVENTIVE MAINTENANCE

2.1 PM INTERVALS

NOTE: The intervals shown below are for reference only. It is expected that the

REPLACEMENT AND ADJUSTMENT

3. REPLACEMENT AND ADJUSTMENT

3.1 GENERAL PRECAUTIONS

3.2 COVERS

NOTE: Remove the paper tray unit before removing the side covers.

3.3 SCANNER ASSEMBLY

NOTE: Ensure that the harness is threaded through the frame.

3.4 ADF MOTOR ASSEMBLY

NOTE: Ensure that the rubber rollers do not become contaminated with grease

NOTE: Note the position of the ferrite core and motor harness routing before

NOTE: It is not necessary to disassemble the ADF unit if replacing only the

3.5 OPERATION PANEL

3.6 MIDDLE COVER AND EXIT ROLLER

3.7 CONTROLLER SHIELD ASSEMBLY

3.8 ENGINE SHIELD ASSEMBLY AND EXIT BOARD

3.9 SMPS AND LIU

3.10 FUSING UNIT

NOTE: Perform procedure 3.10.1 only if removal of entire fusing unit assembly is

Do not place the fusing unit back into the machine with the stripper pawls in the wrong position.

3.11 FAN

3.12 LSU

3.13 CRUM BOARD

3.14 DRIVE ASSEMBLY

NOTE: The six screws have numbers stamped on the drive assembly base

plate. Tighten the screws in the order shown on the plate, when reassembling the drive assembly. It is necessary to consider only screws one to five at the time of drive assembly replacement. Screw number six is tightened when the controller shield assembly is replaced.

3.15 COVER MID-FRONT

NOTE: The cover is very fragile. Use caution when removing it.

3.16 TRANSFER ASSEMBLY

3.17 FEED ASSEMBLY

3.18 PICK-UP ASSEMBLY AND SOLENOID

TROUBLESHOOTING

4. TROUBLESHOOTING