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Service Manual - OKIPAGE20
Chapter 0 Introduction
Page: 1
OKIPAGE 20 / OKIPAGE 20 DX / OKIPAGE 20 DXn
LED PAGE PRINTER PRODUCTS
Adobe Acrobat printable reference copy of the OKIDATA Service Training Manual.
03/20/98
Note: This Adobe Acrobat version of the Okidata Service Training Manual was built with the pictures rendered at 300 dpi, which is ideal for printing, but does not display well on most displays.
Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business
Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Table of Contents
Service Manual - OKIPAGE20
0 Introduction
Copyright
Preface
1 Configuration
1.1 System Configuration
1.2 Printer Configuration
1.3 Optional Configuration
1.4 Specification
1.5 Safety Standards
....1.5.1 Certification Label
....1.5.2 Warning label
2 Operation Description
2.0 Operation Description
2.1 Main Control Board (BOARD-AAA)
2.2 Power Supply Unit
2.3 Electro-photographic Process
....2.3.1 Electro-photographic process mechanism
....2.3.2 Electro-photographic process
....2.3.3 Process operation descriptions
....2.3.4 Revision of LED Head Illumination
2.4 Paper Jam Detection
2.5 Cover Open
2.6 Toner Low Detection
2.7 Stacker-full Detection
2.8 Paper Size Detection
2.9 PostScript ROM module (BOARD-MSM or BOARD-FSL)
3 Parts Replacement
3.0 Parts Replacement
3.1 Precautions for Parts Replacements
3.2 Parts Layout
3.3 How to Change Parts
....3.3.1 Face -up Stacker Assy
....3.3.2 Contact Assy
....3.3.3 DC Fan Motor
....3.3.4 OP Panel Assy
....3.3.5 Board-AAA
....3.3.6 Stacker Assy, Damper Arm, Cover Rear
....3.3.7 Sensor Stacker Full
....3.3.8 Cable cover (guide film)
....3.3.9 Damper
....3.3.10 Feeder Unit-Front
....3.3.11 Roller Assy-Regist
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Table of Contents
....3.3.12 Motor -Main
....3.3.13 Guide Assy-Eject
....3.3.14 Heat Assy
....3.3.15 Roller feed (C)
....3.3.16 Roller Assy-BK
....3.3.17 Roller Assy-Feed
....3.3.18 LED Head
....3.3.19 Paper cassette, ROLLER Ass-Feed,
ROLLER-Assy-Hopping
....3.3.20 Frame Assy-Separation
....3.3.21 Transfer Roller/TR Gear/TR Bearing
....3.3.22 EP lock shaft
....3.3.23 LEVER Assy- Out Sensor
....3.3.24 Toner sensor lever
....3.3.25 Paper sensor lever
....3.3.26 Inlet sensor lever
....3.3.27 Power supply unit
....3.3.28 Lever-Paper end & Lever-Paper near end
....3.3.29 Guide Assy-Cassette (L)
....3.3.30 Guide Assy-Cassette (R)
4 Adjustment
4.0 Adjustment
....4.1 Maintenance Mode and Functions
........User maintenance mode
........System maintenance mode
........Engine maintenance mode
........4.1.1 User maintenance mode
........4.1.2 System maintenance mode
........4.1.3 Engine maintenance mode
........4.1.4 EEPROM Initialization
....4.2 Adjustment When Replacing a Part
........4.2.1 Resetting the fuser counter
........4.2.2 Destination setting
5 Periodic Maintenance
5.1 Period Replacing Part
5.2 Cleaning
....5.2.1 Cleaning of LED lens array
....5.2.2 Cleaning the Plastic Film
6 Troubleshooting Procedures
6.1 Troubleshooting Tips
6.2 Points to Check before Correcting Image Problems
6.3 Tips for Correcting Image Problems
6.4 Preparation for Troubleshooting
6.5 Troubleshooting Flow
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Table of Contents
....6.5.1 LCD status message/trouble list
....6.5.2 LCD message troubleshooting
....6.5.3 Image troubleshooting
7 Wiring Diagram
7.1 Interconnect Signal Diagram
7.2 PCB Layout
7.3 Resistance Check
7.4 Program/Font ROM Location
8 Parts List
Figure 8-1 Printer Unit
Table 8-1 Printer Unit
Figure 8-2 Frame-Main Unit
Table 8-2 Frame-Main Unit
Figure 8-3 Base Unit
Table 8-3 Base Unit
A Centronics Parallel Interface
Centronics Parallel Interface
B RS-232C Serial Interface
RS-232C Serial Interface
C Duplex Unit
1. OUTLINE
....1.1 Functions
....1.2 External View and Component Names
2.0 Mechanism Description
....2.1 General Mechanism
....2.2 JAM Release Mechanism
....2.3 Removing/Installing Duplex Unit
3.0 Parts Replacement
....3.1 Precautions Concerning Parts Replacement
....3.2 Parts Layout
....3.3 Parts Replacement Methods
........3.3.1 Board-LEX
........3.3.2 Connector (IMSA-9714N-14A)
........3.3.3 Photo Sensor
........3.3.4 SOLENOID Assy
........3.3.5 Motor
4.0 Troubleshooting
....4.1 Precautions Prior to the Troubleshooting
....4.2 Preparations for the Troubleshooting
....4.3 Troubleshooting Method
........4.3.1 LCD Status Message List
........4.3.2 Troubleshooting Flow
5.0 Connection Diagram
....5.1 Interconnection Diagram
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Table of Contents Page
....5.2 PCB Layout
6.0 Parts List
Table 6-1 Duplex Unit
D Second / Third Paper Feeder
1.0 Outline
....1.1 Functions
....Appearance and Parts Name
2.0 Description of operation
....2.1 Driving Mechanism
....2.2 Hopper Mechanism
3.0 Parts Replacement
....3.1 Precautions Concerning Parts Replacement
....3.2 Parts Layout
....3.3 Parts Replacement Methods
........3.3.1 Roller assy hopping, Roller assy feed
........3.3.2 Cover front assy
........3.3.3 Board-BBB
........3.3.4 Lever paper end, Lever paper near end
........3.3.5 Motor
........3.3.6 Connector (IMSA-9714N-14B), Connector
(IMSA-9714N-14A)
........3.3.7 Frange pulley, pulley Idle, Mini pitch belt, Plate Earth shaft, Gear double, Tray switch assy
........3.3.8 Roller feed
........3.3.9 Bracket sub roller
........3.3.10 Frame side (L) assy
........3.3.11 Frame side (R) assy
4.0 Troubleshooting
....4.1 Precautions Prior to the Troubleshooting
....4.2 Preparations for the Troubleshooting
....4.3 Troubleshooting Method
........4.3.1 LCD Status Message List
........4.3.2 Troubleshooting Flow
5.0 Connection Diagram
....5.1 Interconnection Diagram
....5.2 PCB Layout
6.0 Parts List
E Multi-Feeder
1.0 Outline
....1.1 Functions
....1.2 External View and Component Names
2.0 Mechanism Description
....2.1 General Mechanism
....2.2 Hopper Mechanism
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Table of Contents
3.0 Parts Replacement
....3.1 Precautions Concerning Parts Replacement
....3.2 Parts Layout
....3.3 Parts Replacement Methods
........3.3.1 Separator
........3.3.2 AOLE-PCB
........3.3.3 Square-shaped connector
........3.3.4 Hopping Motor
........3.3.5 Planet gear
........3.3.6 Roller B
........3.3.7 Roller A
........3.3.8 Mini pitch belt & Feed roller
4.0 Troubleshooting
....4.1 Precautions Prior to the Troubleshooting
....4.2 Preparations for the Troubleshooting
....4.3 Troubleshooting Method
........4.3.1 LCD Status Message List
........4.3.2 Troubleshooting Flow
5.0 Connection Diagram
....5.1 Interconnection Diagram
....5.2 PCB Layout
@6.0 Parts List
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Service Manual - OKIPAGE20
Chapter 0 Introduction
Page: 1
All specifications are subject to change without notice.
PostScript, Adobe and the PostScript logo are trademarks of Adobe Systems Incorporated, registered in the U.S.A.
*Times, Helvetica and Palatino are trademarks of Linotype AG and/or its subsidiaries.
ITC Avant Garde Gothic, ITC Zapf Chancery, ITC Zapf Dingbats and ITC Bookman are registered trademarks of International Typeface Corporation.
HP and LaserJet are registered trademarks of Hewlett-Packard Company.
Diablo 630 is a registered trademark of Xerox Corporation.
AppleTalk is a registered trademark of Apple Computer, Inc.
LocalTalk is a trademark of Apple Computer, Inc.
Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business
Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Service Manual - OKIPAGE20
Chapter 0 Introduction
Page: 2
This Service Handbook describes the field maintenance procedures for the OKIPAGE20/20n and 20DX.
This handbook was written for use by maintenance personnel. Note, however, that the user should refer to the USER'S MANUAL for operating instructions for the equipment.
Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business
Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Service Manual - OKIPAGE20
Chapter 1 Configuration
Page: 3
The OKIPAGE20 Series printers consist of control and engine blocks as the standard configuration (See
Figure 1-1.)
Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business
Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Service Manual - OKIPAGE20
Chapter 1 Configuration
Page: 4
The printer unit consists of the following hardware components:
Electro-photographic processor
Paper feeder
Controller
Operator panel
Power/sensor board
Figure 1-2 shows the printer unit configuration.
Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business
Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Service Manual - OKIPAGE20
Chapter 1 Configuration
Page: 5
The options below are available for use with the OKIPAGE20 Series Printer. They are sold separately from the printer unit.
(1) Multi Feeder
(2) Second / Third Paper Feeder
(3) DUPLEX Unit
(4) Flash ROM module (72 pin SIMM, 4MB/8MB)
(5) PostScript ROM module (72pin SIMM)
Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business
Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Service Manual - OKIPAGE20
Chapter 1 Configuration
Page: 6
(1)
(2)
(3)
(4)
(5)
Type Desktop
External dimensions (excludes protruding portion)
Height 13.0" (331 mm)
Width 14.4" (336 mm)
Depth 18.2" (378 mm)
Weight
Developing method
Exposing method
Paper used
42 lbs. (19 kg) If Installed Duplex 47 lbs. (21.3 kg)
Dry electrophotography
LED stationary head
<Type>
Standard paper
- Xerox 4200 (20 lbs.)
Application paper (manual face-up feed)
- Label
- Envelope
- OHP paper (transparency)
<Size>
Standard sizes
- Letter
- Legal
- Legal-13
- Executive
- COM-10
- Monarch
- DL
- C5
- COM-9
- A4
- A5
- B5 (JIS)
- A6
Applicable sizes
- Width: 3.4" to 8.5" (86 to 216 mm)
- Length: 5.5" to 14" (140 to 355.6 mm)
<Thickness>
- Automatic feed: 16 to 28 lbs. (60 to 105 g/m
2
)
- Manual feed: label, OHP paper (transparency)
Envelope, 16-36 lb.
(6)
(7)
(8)
(9)
(10)
(11)
Printing speed
Paper feeding method
Paper delivery method
Resolution
Power input
Power consumption
First print: 8 sec.
Continuous printing: 20 sheets/min. [at duplex print: 10 sheet/min.]
Warm-up time: 90 seconds, [at room temperature 77 o
F
(25 o
C), and rated voltage (120 VAC)]
Automatic feed or manual feed
Face down/face up
600 x 600 dots/inch
600 x 1200 dots/inch
120 VAC + 5.5%, -15% (ODA)
230V + 10%
Peak: Approx. 820W
Typical: Approx. 350W
Idle: Approx. 95W
Power save mode: Approx. 25W
(12) Temperature and humidity
Temperature
Humidity
Maximum wet bulb temperature
Minimum difference between wet and dry bulb temperature
In operation
50-90
(10-32)
2-80
77
(25)
35.6
(2)
Power off mode During Storage Unit
32-110 14-110
(0-43)
10-90
80.4
(26.8)
35.6
(2)
(-10-43)
10-90
--------------
________
Notes:
1. Storage conditions specified above apply to printers in packed condition.
2. Temperature and humidity must be in the range where no condensation occurs.
o
F
( o
C)
%RH o
F
( o
C) o
F
( o
C)
(13) Noise
(14) Consumables
During operation: 50 dBA or less (without second tray)
55 dBA or less (with second tray)
At standby: 45 dBA or less
Power save mode: 43 dBA or less
Toner cartridge kit 5,000 (5% duty)*
Image drum cartridge 30,000 at continuous printing*
19,000 (3 page/job) (Simplex printing)*
*Simplex printing without Power Save.
10,000 (1 page/job)
Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business
Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Service Manual - OKIPAGE20
Chapter 1 Configuration
Page: 7
1.5.1 Certification label
1.5.2 Warning label
Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business
Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Service Manual - OKIPAGE20
Chapter 1 Configuration
Page: 8
The safety certification label is affixed to the printer in the position below.
Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business
Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Service Manual - OKIPAGE20
Chapter 1 Configuration
Page: 9 he warning label is affixed to the portion which may cause an injury to human body. Follow the instructions on warning labels during maintenance.
Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business
Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Service Manual - OKIPAGE20
Chapter 2 Operation Description
Page: 10
The OKIPAGE20 Series Printers consist of a main control board, a power supply unit (120V/230V), a power supply unit (high voltage), an operator panel and an electro-photographic process mechanism.
The control board receives data through a host I/F, decodes and edits the data, and stores the edited data in a memory. After completing edition of one page of data, it references the font memory and generates bit data on the same memory. At the same time, it transfers the bit image data to an LED head in units of one dot line.
The electro-photographic process mechanism prints data on paper.
The operator panel is used for operations and status display.
Fig. 2-1 shows an OKIPAGE20 Series Printer block diagram.
Figure 2-1 OKIPAGE 20 Series Printer block diagram
Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business
Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Service Manual - OKIPAGE20
Chapter 2 Operation Description
Page: 11
The control board consists of an one chip CPU, a LSI program/font ROMs, four DRAMs, an EEPROM, a host interface circuit, and a mechanism driving circuit.
(1) One-chip CPU
The one-chip CPU is a custom CPU (32-bit internal bus, 32-bit external bus, 40-MHz clock, that incorporates and RISC CPU and its peripheral devices, and has the following functions.
Built-in device
Chip select controller
Bus controller
DRAM controller
Function
Control of peripheral LSI, ROM, RAM and I/O device
DMA controller
Serial interface controller
Parallel interface controller
Timer
Serial I/O Port
Transfer of data from Host I/F to RAM
Control of RS-232C serial interface
Control of Centronics parallel interface
Generation of various control timing
Monitoring of paper running and paper size
Control of serial interface between controller and operator panel,
EEPROM Control of a serial interface between controller and power supply board.
I/O Port Input and output of sensor and motor signals.
Outputting of various control signals
Motor driver controller Control of Main Motor
Compression/extension circuit Compressed frame buffer is produced by compressing the data of temporary band buffer.
Extension printing operation is executed by extending the data of compressed frame buffer.
(2) Program and Font ROMs
The program/font ROM's store the HP LJ5 emulation program and various types of font. MASK ROM is used as the program/font ROM's.
(3) DRAM's
4-Megabyte DRAM (16 Mbit DRAM x 2) is mounted as resident memory to be used for storing the program and providing various buffers. This DRAM is expandable up to 68 Mbytes by adding expansion memory (SIMMs). This DRAM provides the areas shown in the following table.
Memory capacity setting
Memory area
System area
Raster buffer
Receive buffer
Page buffer
Use
Working area used for the program
Stores converted bit image data
Stores temporarily the data received from the host interface
Adds print information to the analyzed receive data and stores the resulted data.
DLL/macro buffer Stores soft fonts and macro data
Font cache buffer Stores bit map fonts generated by the font rasterizer based on scalable font information
MENU Expansion RAM
Fixed Fixed
Enable Expandable
Enable Expandable
-Expandable
-Expandable
Enable Expandable
(4) EEPROM
The EEPROM has a 1-kbit capacity and stores the following data:
Menu data
Various counter data (page counter, drum counter, fuser counter, etc)
Adjusting parameters (LED head drive time, print start position, etc)
(5) LSI (LZ9FF22)
Built in device
Serial I/O port
Motor driver controller
I/O port
Function
Control of serial interface between controller and 2nd tray, 3rd tray, Multi-purpose feeder
Control of serial interface between controller and Duplex unit
Control of Hopping motor
Inputting of various sensor signals
Output of various control signals
(6) Host interface
Centronics bi-directional parallel interface
RS232C interface
OKI HSP interface (Option)
The single effective interface or the automatic interface select mode can be selected using the menu. If the busy state of the printer continues for a long time period, the buffer near-full control releases the busy status at constant intervals even if the host side is busy so not to cause the interface time-out at the host side.
(a) Centronics bi-directional parallel interface
This is an interface conforming to IEEE-1284 and provides either of unidirectional and bi-directional communications according to each of the following communication modes.
Compatibility mode - Unidirectional communications from the host to the printer.
Nibble mode - This mode transmits 4-bit wide data from the printer to the host. In this mode, each
1-byte data is transferred in the form of two nibbles using ERROR, BUSY, FAULT, and SELECT
signal leads. This mode can provide the bi-directional operation in combination with the compatibility mode.
ECP mode - This mode provides the asynchronous bi-directional interface and transmits and receives
1-byte data using eight data signal leads under the semi-duplex control by the host.
When the power is turned on, the compatibility mode is automatically selected. The change to another mode from the compatibility mode is made through negotiation. (When the BI DIRECTION is set to
ENABLE in the menu, this change can be performed.) (For the electrical/physical characteristics of this interface, see APPENDIX B)
(b) RS232C serial interface
The following protocol is supported for the serial interface conforming to EIA RS232C.
READY/BUSY (DTR HI or DTR LO)
X-ON/X-OFF
RBST X-ON
(For the electrical/ physical characteristics of the interface, see APPENDIX B)
(c) OKI HSP interface (Option)
This interface (slot) is an OKI proprietary universal interface that provides the platform to connect various boards (including those supplied by third party vendors) such as the LAN connection expansion board and
SCSI expansion board. Any expansion boards compatible with this interface can be mounted on the
Control board in the piggyback connector without modifying the program at the printer side. The conceptual diagram of the OKI HSP interface is shown in Fig. 2-2. (For the electrical/physical characteristics of the OKI HSP interface, see the OKI HSP interface technical manual.)
(7) RAM module
Pin layout
Basic specification
- Type: 72 pins Standard SIMM (32 bits buss width) [Note: EDO SIMM type cannot be used.]
- Access time: 60ns, 70ns, 80ns, 100ns
- Capacity: 4, 8, 16 or 32MB
- Parity: None
(8) Flash ROM module
Pin layout
Basic specification
- Type: 72 pins SIMM (32 bits buss width)
- Access time: 90ns
- Capacity: 4 or 8MB
(9) PS ROM module
PS ROM module is BOARD-MSM or BOARD-FSL
BOARD MSM consists of MASK ROM
BOARD FSL consists of Flash ROM (8MB).
Pin layout
Basic specification
- Type: 72 pins SIMM (32 bits buss width)
- Access time: 100ns (Board-MSM), 90n (Board-FSL)
- Capacity: 6MB (Board-MSM), 8MB (Board-FSL)
Emulation : PostScript Level 2
Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business
Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Service Manual - OKIPAGE20
Chapter 2 Operation Description
Page: 12
The power supply/sensor board consists of an AC filter circuit, a low voltage power supply circuit, a high voltage power supply circuit, heater drive circuit, and photosensors.
(1) Low Voltage Power Supply Circuit
This circuit generates the following voltages.
Output voltage
+5 V
+30 V
+8 V
-8 V
+3.8V
Use
Logic circuit supply voltage
Motor and fan drive voltage and source voltage for high-voltage supply
Reset circuit, RS232C Line voltage
RS232C Line voltage
LED head supply voltage
(2) High Voltage Power Supply Circuit
This circuit generates the following voltages necessary for electrophotographic process from +30 V, according to the control sequence from the main control board. When cover open state is detected, +30 V supply is automatically interrupted to stop the supply of all high-voltage outputs.
Remarks Output
Sub-CH
CH
DB
SB
TR
CB
Voltage
-15 Microline
-1.3 KV
Use
Voltage applied to Sub charging roller
Voltage applied to charging roller
-220V/+300V
-450 V
Voltage applied to developing roller
Voltage applied to toner supply roller
+4 KV/-1.3 kV Voltage applied to transfer roller
+450 V/-1350V Voltage applied to cleaning roller
Variable + only
(3) Photosensor
The photosensor mounted on this power supply/sensor board monitors the status of paper being fed through the printer during printing.
The sensor layout diagram is shown in Figure 2-2.
Sensor
Inlet sensor 1
Inlet sensor 2
Paper sensor
Function
Detects the leading part of the paper and gives the monitor timing for switching from hopping operation to feeding operation. Monitors paper feeding situation and paper size based on the paper arrival time and running time.
Sensing state
ON: Paper exists.
OFF: No paper exists.
Detects the paper width ON: A4 or larger
OFF: Small than A4
Detects the leading portion of the paper. Monitors the paper feeding situation.
ON: Paper exists.
OFF: No paper exists.
Outlet sensor Monitors the paper feeding and size according to the time of arrival to and leaving the past the sensor.
ON: Paper exists.
OFF: No paper exists.
Paper and sensor Detects the end of the paper.
ON: Paper exits.
OFF: No paper exists.
Toner low sensor Detects the lack of toner.
- - - - -
------
The power supply unit consists of an AC filter circuit, a low voltage power supply circuit, a high voltage power supply circuit, heater drive circuit, and photosensors.
(1) Low voltage power supply circuit
This circuit generates the following voltages.
(2) High voltage power supply circuit
This circuit generates the following voltages necessary for electro-photographic processing from +30 V according to the control sequence from the control board. When cover open state is detected, +30 V supply is automatically interrupted to stop the supply of all the high-voltage outputs.
Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business
Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Service Manual - OKIPAGE20
Chapter 2 Operation Description
Page: 13
2.3.1 Electro-photographic process mechanism
2.3.2 Electro-photographic process
2.3.3 Process operation descriptions
2.3.4 Revision of LED Head Illumination
Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business
Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Service Manual - OKIPAGE20
Chapter 2 Operation Description
Page: 14
This mechanism prints image data from the control board on the paper by electro-photographic process.
The Figure 2-4 shows the layout of the electro-photographic process mechanism.
(1) Image drum unit
The image drum unit consists of a sensitive drum, a charger, and a developer. The unit forms a toner image on the sensitive drum, using a electrostatic latent image formed by the LED head.
(2) Hopping motor
This motor is a pulse motor of 48 steps/rotation that is two-phase excited by the signal from the control board. It drives the hopping roller of the first tray and the front feed roller via two one-way clutches according to the direction of rotation.
(3) Motor-Main
This motor is a pulse motor of 72 steps/rotation that is two-phase excited by the signal from the control board and is the main motor of this mechanism.
(4) Clutch (for Roller-Regist)
(5) Clutch (for Feed Roller)
(6) LED head
Image data for each dot line from the control board is received by the shift register and latch register. The
4992 LEDs are driven to radiate the image data to the image drum.
(7) Fuser
The fuser consists of a heater, a heat roller, a thermistor and a thermostat. An AC voltage from the power supply board is applied to the heater under the control of the HEATON signal from the control board. This
AC voltage heats the heater. The control board supervises the heat roller temperature via the thermistor, and regulates the heater roller at a predetermined temperature (185 °C : Normal paper, MEDIA TYPE =
MEDIUM) by connecting or disconnecting the AC voltage supply to the heater. If the heater roller temperature rises abnormally, the thermostat of the heater voltage supply circuit is activated to cut the AC voltage supply forcibly.
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Service Manual - OKIPAGE20
Chapter 2 Operation Description
Page: 15
The electro-photographic processing is outlined below. Figure 2-5 shows the electro-photographic printing process.
(1) Charging
The surface of the image drum is uniformly charged with negative charges by applying a negative voltage to the charge roller.
(2) Exposure
Light emitted from the LED head irradiates the negatively charged surface of the image drum. The surface potential of the irradiated part of the image drum surface is lowered, so that an electrostatic latent image associated with the print image is formed.
(3) Developing and toner recovery
When the negatively charged toner is brought into contact with the image drum, it is attracted to the electrostatic latent image by static electricity, making the image visible. At the same time, the residual toner on the image drum is attracted to the developing roller by static electricity.
(4) Transfer
When paper is placed over the image drum surface and a positive charge, opposite in polarity to the toner, is applied to the reverse side of the paper from the transfer roller, the toner is attracted by the positive charge and is transferred to the paper. As a result, the toner image formed on the image drum is transferred to the paper.
(5) Temporary cleaning
Residual toner that remains on the image drum without being transferred is made uniform by the cleaning roller and is temporarily attracted to the cleaning roller by static electricity.
(6) Fusing
The toner image transferred to the paper is fused under heat and pressure. Figure 2-6 shows an electro-photographic process timing chart.
Figure 2-5
Figure 2-6
Figure 2-7
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Service Manual - OKIPAGE20
Chapter 2 Operation Description
Page: 16
(1) Hopping
Hoppings from the first tray and the front feeder are effected by a single hopping motor in the mechanism shown below.
Turning the Hopping motor in direction a (CW) drives the 1st Hopping Roller. Turning the Hopping motor in direction b (CCW) drives the Front Hopping Roller. Gear C and Hopping roller build-in one-way bearing, so that turning each of these gears in reverse direction will not be transmitted to the corresponding roller.
(a) Hopping from the 1st Tray
(1) Hopping
Rotating the Hopping Motor in direction a (CW) drives the 1st Hopping Roller and the Sub Roller then pick up a sheet of paper in the 1st tray. The Main Motor is always driven in direction c (CCW) on printing. After the paper fed approx. 30mm from the tray, the Clutch (Feed) drives the Align Roller to advance the paper until the Inlet Sensor turns off.
(2) Aligning
After turning on the Inlet Sensor, the paper fed by a predetermined length and choked up to the wedge space formed by the Regist Roller and the Pressure Roller so that to align the skew of paper.
(3) During the paper fed from the 1st tray, the build in clutch of Gear C is idled and not to drive the Front
Hopping Roller.
(4) Feeding
After aligned the paper, the Hopping Motor turned off and stop hopping. Also the Clutch (Feed) turned off and the Align Roller idled freely. Then Clutch (Regist) turned on and the Regist Roller start to feed the paper. After the paper fed, the 1st Hopping Roller is freely idled by releasing build in one way clutch, also the Sub Roller is freely idled by escaping the Planet Gear.
(5) Start printing. after the paper turns off the Write Sensor.
(b) Hopping from the Front Feeder
(1) Hopping
The Front Feeder Plate is normally locked at the lower position by the Release Lever and turn the Micro
SW on. Top of the FF Cam which attached on end of the Front Hopping Shaft is normally located Upper position (0 to 30 degree : home position). Rotating the Hopping Motor in direction b (CCW) drives the
Front Hopping Shaft and then attached the FF Cam and the Front Hopping Roller are driven. During the
FF Cam rotated approx. 60 degree, the Release Lever was pushed and the Front Feeder Plate lifts up, then the Front Hopping Roller picks up a sheet of paper. At the FF Cam rotated approx. 180 degree, the Front Feeder Plate is pushed down and locked by the Release Lever again. At the FF Cam rotated approx. 275 degree the paper fed until the Inlet Sensor turns off.
(2) Aligning
After turning on the Inlet Sensor, the paper fed by a predetermined length and choked up to the wedge space formed by the Regist Roller and the Pressure Roller so that to align the skew of paper.
(3) During the paper fed from the Front Feeder Plate, the one way clutch of 1st Hopping Roller is idled and not to drive the 1st Hopping Roller and the Sub Roller.
(4) Feeding
After aligned the paper, the Hopping Motor turned off and stop hopping. Then Clutch (Regist) turned on and the Regist Roller start to feed the paper. After the paper fed, the Front Hopping Roller drives the Front
Hopping Shaft and attached the FF Cam with small idle torque of build in one way clutch and when comes into the Release Lever, the one way clutch is slipped and the FF Cam is stopped at the upper position
(home position). The Front Hopping Roller continuously idled up to the paper away.
(5) Start printing. after the paper turns off the Write Sensor.
(2) Feeding
After the end of hopping, the pulse motor dedicated for driving the registration roller rotates to drive the registration roller. The driven registration roller advances the paper until it comes out of the registration roller.
When leading edge of the paper causes the paper sensor to turn on, the printing is started synchronously.
Although Gear D is always rotating due to an all-time rotation of the main motor in direction c, the regist roller would not rotate because the clutch (regist) is turned off.
After the completion of hopping, turn on the clutch (regist) to drive the regist roller. The regist roller would drive a paper until the paper has passed.
(3) Charging
Charging is effected by applying a DC minus voltage to the charge roller that is in contact with the image drum surface.
(4) Exposure
Light emitted from the LED head irradiates the image drum surface with negative charges. The surface potential of the irradiated part of the image drum drops, thereby forming an electrostatic latent image associated with the image signal.
(5) Developing
Toner is attracted to the electrostatic latent image on the image drum surface to convert it into a visible toner image. Developing takes place at the contact between the image drum and the developing roller.
(1) As the toner supply roller rotates while rubbing on the developing roller, a friction charge is generated between the developing roller and the toner, allowing the toner to be attracted to the developing roller.
(The developing roller surface is charged positive and the toner, negative.)
(2) The toner attracted to the developing roller is scraped off by the doctor blade, forming a thin coat of toner on the developing roller surface.
(3) Toner is attracted to the exposed part (low-potential part) of the image drum at the contact between the image drum and the developing roller, making the electrostatic latent image visible.
(6) Transfer
The transfer roller is composed of conductive sponge material and is designed to make the image drum surface and the paper closely into contact.
Paper is placed over the image drum surface, and a positive charge, opposite in polarity to the toner, is applied to the paper from its reverse side.
The application of a high positive voltage from the power supply to the transfer roller causes the positive charge induced to the transfer roller surface to be transferred to the paper at the contact between the
transfer roller and the paper. As a results, toner charged negative that is attracted to the image drum surface is transferred to the upper side of the paper by the positive charge on the lower side of the paper.
(7) Fusing
After the end of the transfer, the unfused toner image is fused on the paper under heat and pressure as it passes between the heater roller and the back-up roller. The heater roller with a Teflon coating incorporates a 750W heater (Halogen lamp), which heats the heat roller.
A thermistor which is in contact with the heater roller regulates the heater roller at a predetermined temperature (about 180 ~ 200°C). A safety thermostat cuts off voltage supply to the heater by opening the thermostat in the event of abnormal temperature rises.
The back-up roller is held under a pressure of 5 kg from the pressure spring at each side.
(8) Cleaning
After the end of the transfer, residual toner on the image drum is attracted to the cleaning roller temporarily by static electricity to clean the image drum surface.
(9) Cleaning of rollers
The charge roller, transfer roller and cleaning roller are cleaned in the following cases:
In warming up at power-on time
In warming up after the cover is opened and closed
When the number of accumulated sheets is 10 or more and the printout operation ends
Changes in bias voltage applied to each roller move adhesive toner from the roller to the image drum and return it to the developer.
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Service Manual - OKIPAGE20
Chapter 2 Operation Description
Page: 17
An LED correcting head, which is capable of correcting the illumination of the LED for each dot, is being used in this printer. LED illumination correction function of 16 steps is carried out by using an EEPROM which is installed in the LSI that maintains the LED illumination correction values, and an LED correction drivers together as a pair.
The LED correcting head consists of the correction control LSI , LED drivers , and an LED array. The block diagram of the LED correcting head is shown below.
The LED correcting head is a 600 dpi head, with the LED drivers located on both sides of the LED array with a 300 dpi pitch spacing. The printing and correction data obtained from the CPU through four signal lines are sent to the LED array.
In the OKIPAGE 20 Series Printer, the correction control of LED head is executed by CPU. The procedure is as follows
(1) LED head is set to the correction control read mode and all correction data stored in EEPROM within the correction control LSI are read by CPU, and stored temporarily in the memory.
(2) Next, LED head is set to the correction control direct mode and the correction data stored temporarily in the memory is transferred directly to the LED driver.
(1) Read of correction data
(2) Transfer of correction data to head driver correction data
The LED driver corrects the LED illumination by controlling the LED current. The LED illumination can be set in 16 steps, with 7 steps in the direction of illumination increase in relation to the standard value, and 8 steps in the direction of decrease. For this reason, the LED correction data is a 4-bit data for each dot.
The relationship between the LED correction data and LED current correction steps with the LED driver used in an LED head is shown below.
Correction Data msb b3 b2 b1
1 0 0
0
0
0
0
1
1
1
1
1
1
0
0
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
0
0
0
1
1
1
0
0
1
1 lsb b0
0
1
0
1
0
1
0
1
0
1
1
0
1
0
Correction
Step
+16%
+14%
+12%
+10%
+8%
+6%
+4%
+2%
+0%
-2%
-4%
-6%
-8%
-10%
Correction
Mode
Correction by increasing
Illumination
No correction
1
1
0
0
1
0
0
1
-12%
-14%
The printing operation timing chart is shown below.
Correction by decreasing
Illumination
Normal Mode Printing Timing Chart
The printing operation is carried out in normal mode. Under ordinary circumstances such as when the power is turned on or when LOAD signal level is low, the normal mode is enabled.
The printing operation is carried out in the following sequence. First, the printing data DATA3 through
DATA0 are stored, sequentially shifted, in the shift registers of the LED drivers, by the printing data synchronous clock, CLOCK. Then the printing data stored in shift registers are latched by the high level pulse of LOAD. The latched printing data turns the LEDs on by STRB1-N through STRB4-N and actuates printing.
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Service Manual - OKIPAGE20
Chapter 2 Operation Description
Page: 18
The paper jam detection function supervises the paper state at power-on time and during printing. In the event that the following state occurs, this function interrupts the printing process. If any of the following errors is presented, recovery printing will be performed by removing the jammed paper (namely by opening the upper cover, removing the jammed paper and closing the upper cover).
Error
Paper Input jam
Paper feed jam
Paper exit jam
Paper size error
Cause of error
At power-on time, the paper is placed at the inlet sensor.
After hopping operation is attempted three times, the leading part of the paper does not reach the inlet sensor.
At power-on time, the paper is placed at the paper sensor.
The leading part of the paper does not reach the paper sensor within a predetermined distance after the paper has reached the inlet sensor.
The trailing part of the paper does not pass over the paper sensor within a predetermined leading edge of the paper has passed over the paper sensor.
The leading part of paper does not reach the outlet sensor within a predetermined distance after the paper has reached the paper sensor.
At power-on time, the paper is placed on the outlet sensor.
The paper does not pass over the outlet sensor within a predetermined after the leading part of the paper has reached the outlet sensor.
The paper size check for manual feed specified considers the reference size as free size.
The size of the paper is supervised by the inlet sensor
1. It is detected that the paper does not pass over the inlet sensor 1 within predetermined range of distance.
The inlet sensor 2 detects that the size of the loaded paper is A4 or larger, or smaller than A4. The detected paper size differs from the paper size set by command or menu.
The paper size check for manual feed specified considers the reference size is free size.
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Service Manual - OKIPAGE20
Chapter 2 Operation Description
Page: 19
When the stacker cover is opened, the cover open microswitch on the Power Supply Unit (High voltage) is turned off to cut the supply of +30V to the high voltage power supply circuit. As a result, all high-voltage outputs are interrupted. At the same time, the CVOPN signal is sent to the control board to notify it of the off state of the microswitch, and the Main board performs the cover open processing.
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Chapter 2 Operation Description
Page: 20
Composition
The device consists of the stirring gear which rotates at a constant rate, the stirring bar and the magnet on the stirring bar. The stirring bar rotates through the link on the protrusion in the stirring gear.
Operation
Toner Low is detected by monitoring the time interval of the encounter of the magnet set on the sensor lever and the magnet on the stirring bar.
Operation during toner full state
The stirring bar rotates due to the interlocking with the stirring gear.
Even when the magnet on the stirring bar reaches the maximum height, since the other side is being dipped in the toner, the stirring bar is pushed by the stirring gear.
Operation during Toner Low State
When the stirring bar reaches the maximum height, since there is no resistance provided by the toner on the other side, it falls to the minimum height due to its own weight.
Because of this, the time interval during which it is in encounter with the magnet of the sensor lever becomes long. By monitoring this time interval, toner low can be detected.
When the toner low state is detected 2 times consecutively, Toner Low is established.
When the toner full state is detected 2 times consecutively, Toner Low is canceled.
When there is no change with the toner sensor for 2 cycles (2.77 sec. x 2) or more, then the Toner
Sensor Alarm is activated.
The toner sensor is not monitored while the drum motor is in a halt.
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Chapter 2 Operation Description
Page: 21
The sensor (interlocked with the lever) at the paper outlet to the stacker detects a stacker-full state (about
250 sheets) and stops printing of the ensuing pages.
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Service Manual - OKIPAGE20
Chapter 2 Operation Description
Page: 22
The four tab pieces are driven according to the setting position of the paper guide through the cam interlocked with the paper guide of the paper cassette.
When the paper cassette is inserted into the printer, the state of the tab pieces is detected by the microswitch to recognize the paper size.
Paper size
SW1
0
0
1
1
0
1
1
1
State of Microswitches
SW2 SW3
0
1
1
1
1
0
1
1
1
0
0
1
0
0
1
0
SW4
1
1
1
1
1
0
0
1
Letter
Executive
A4
Legal 14
Legal 13
B5
A5
A6 (Not available)
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Service Manual - OKIPAGE20
Chapter 2 Operation Description
Page: 23
PostScript ROM module is mounted on SIMM socket (FSIMM1).
The PostScript ROM module consists of program/font ROM's, an EEPROM.
(1) Program/font ROM's
The program/font ROM's store the PostScript Level II program and its fonts.
BOARD-MSM consists of Mask ROM.
BOARD-FSL consists Flash ROM.
Mask ROM and Flash ROM is used as the program/ font ROM's.
(2) EEPROM
The EEPROM has a 4-kbit capacity and stores the PostScript's menu settings.
(3) Emulation
PostScript Level 2.
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Service Manual - OKIPAGE20
Chapter 3 Parts Replacement
Page: 24
This section explains the procedures for replacement of parts, assemblies, and units in the field.
Only the removal procedures are explained here. Reverse the procedure for the installation.
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Service Manual - OKIPAGE20
Chapter 3 Parts Replacement
Page: 25
(1) Before starting to replace parts, remove the AC cord and interface cable.
(a) Remove the AC cord in the following sequence: i) ii)
Turn off ("o") the power switch of the printer.
Disconnect the AC inlet plug of the AC cord from the AC receptacle.
iii) Disconnect the AC cord and interface cable from the printer
(b) Reconnect the printer in the following procedure.
i) ii)
Connect the AC cord and interface cable to the printer.
Connect the AC inlet plug to the AC receptacle.
iii) Turn on ("I") the power switch of the printer.
(2) Do not try disassembly as long as the printer is operating normally.
(3) Do not remove unnecessary parts: try to keep the disassembly to a minimum.
(4) Use specified service tools.
(5) When disassembling, follow the determined sequence. Otherwise, parts may be damaged.
(6) Since screws, collars and other small parts are likely to be lost, they should temporarily be attached to the original positions.
(7) When handling IC's such as microprocessors, ROM and RAM, and circuit boards, do not wear gloves that are likely to generate static electricity.
(8) Do not place printed circuit boards directly on the equipment or floor.
[Service Tools]
The tools required for field replacement of printed circuit boards, assemblies and units are listed in Table
3-1.
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Service Manual - OKIPAGE20
Chapter 3 Parts Replacement
Page: 26
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Service Manual - OKIPAGE20
Chapter 3 Parts Replacement
Page: 27
This section explains how to change parts and assemblies appearing in the disassembly diagram below.
3.3.1 Face-up Stacker Assy
3.3.2 Contact Assy
3.3.3 DC Fan Motor
3.3.4 OP Panel Assy
3.3.5 Board-AAA
3.3.6 Stacker Assy, Damper Arm, Cover Rear
3.3.7 Sensor Stacker Full
3.3.8 Cable cover (guide film)
3.3.9 Damper
3.3.10 Feeder Unit - Front
3.3.11 Roller Assy - Regist
3.3.12 Motor - Main
3.3.13 Guide Assy - Eject
3.3.14 Heat Assy
3.3.15 Roller feed (C)
3.3.16 Roller Assy - Bk
3.3.17 Roller assy - Feed
3.3.18 LED Head
3.3.19 Paper cassette, ROLLER Assy - Feed, ROLLER - Assy - Hopping
3.3.20 Frame Assy - Separation
3.3.21 Transfer Roller / TR Gear / TR Bearing
3.3.22 EP lock shaft
3.3.23 LEVER Assy - Out Sensor
3.3.24 Toner sensor lever
3.3.25 Paper sensor lever
3.3.26 Inlet sensor lever
3.3.27 Power supply unit
3.3.28 Lever - Paper end & Lever - Paper near end
3.3.29 Guide Assy - Cassette (L)
3.3.30 Guide Assy - Cassette (R)
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Chapter 3 Parts Replacement
Page: 28
(1) Turn off the AC Power Switch and unplug the AC Power Cord from the outlet.
(2) Disconnect the Interface Cable (1).
(3) Open the face-up stacker assy (2), unhook the right and left projections, and then remove the face-up stacker assy (2).
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Chapter 3 Parts Replacement
Page: 29
(1) Open the stacker assy (1) and unscrew 2 screw (2) to remove the assy -side (L) (3).
(2) Unscrew 2 screws (4) and remove the plate (contact) (5) and contact Assy (6).
Note! Don't deform the electrode plates of the contact assy (6).
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Chapter 3 Parts Replacement
Page: 30
(1) Remove the cover assy-side (L). [See 3.3.2 (1)]
(2) Remove the DC fan motor (1) by pulling out the connector of DC fan motor (1).
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Chapter 3 Parts Replacement
Page: 31
(1) Disconnect the Interface cable (1).
(2) Open the stacker assy (2), unscrew 2 screws (3) and remove the cover side (I/F) (4).
(3) Remove 2 screws (5) and flexible cable (6) to remove the operator panel assy (7).
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Service Manual - OKIPAGE20
Chapter 3 Parts Replacement
Page: 32
(1) Remove the operator panel assy and cover side (I/F). [See 3.3.4]
(2) Unscrew 2 screws (1) and remove the cover side (R) (2).
(3) Unscrew 2 screws (3) and remove plate-shield (4).
(4) Unscrew 3 screws (5) and 2 screws (6), unplug all the connectors (7) , and remove Board-AAA (8).
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Chapter 3 Parts Replacement
Page: 33
(1) Remove the face-up stacker assy. [See 3.3.1]
(2) Remove the cover-side (L). [See 3.3.2 (1)]
(3) Remove the OP panel assy. [See 3.3.4]
(4) Remove the Board-AAA. [See 3.3.5]
(5) Loosen 2 screws, unlock the both sides latches and remove the cover rear (A).
(6) Unscrew 2 screws (1) and cover frame (2).
(7) Unscrew 3 screws (3) and remove the plate assy-side (R) (4).
(8) Remove the lever back up release (5) and unlock the engagement of the projection on the right side of gear at the right side of stacker cover.
(9) Remove a screw (6) and washer (7), and then remove the stacker assy (8). (At this time, the damper arm 9 can also be detached simultaneously.)
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Chapter 3 Parts Replacement
Page: 34
(1) Turn the AC power switch off. Unplug the AC power cord from the outlet.
(2) Remove the Stacker assy. [See 3.3.6]
(3) Remove four screws (1). Remove stacker mount 2 by releasing the tabs at position (2A) .
(4) Remove Sensor stacker full (3) by releasing spreading the plastic tabs on each side of sensor Assy (3) and lifting switch from cover.
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Chapter 3 Parts Replacement
Page: 35
(1) Turn the AC power switch off. Unplug the AC power cord from the outlet.
(2) Remove the stacker Assy. [See 3.3.6]
(3) Unscrew 2 screws (1) release tabs at portion (1A) . Remove cable cover (2), guide film (3).
Note: Use care when replacing cable cover. Do not pitch, crimp, or cut cables or protective sheet.
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Chapter 3 Parts Replacement
Page: 36
(1) Remove the damper arm.[See 3.3.6]
(2) Unscrew 2 screws (1) and remove the two damper (2).
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Chapter 3 Parts Replacement
Page: 37
(1) Open the manual feed assy (1) and release both right and left parts by pulling out the engagements on the lower part.
(2) Stand the manual feed assy (1) on end and unhook the engagements with both right and left manual feed hopper stays.
(3) Remove the OP panel assy. [See 3.3.4]
(4) Unscrew 5 screws (2) and remove the feeder unit-front (3).
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Chapter 3 Parts Replacement
Page: 38
(1) Remove the feeder unit-front. [See 3.3.10]
(2) Remove an E-ring (3), gear assy-clutch (4), and four screws (1) in this order, and lifting out the roller assy-regist (2).
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Service Manual - OKIPAGE20
Chapter 3 Parts Replacement
Page: 39
(1) Remove the stacker assy. [See 3.3.6]
(2) Remove the feeder unit-front. [See 3.3.10] (At this point, the manual feed assy has not to be removed.)
(3) Remove the DC fan motor. [See 3.3.3]
(4) Remove the contact assy. [See 3.3.2]
(5) Remove the plate-FG (F) (1).
(6) Remove the TR gear (2) and roller transfer (3).
(7) Unscrew 7 screws (4) and remove the main frame (5).
(8) Unlock latches at two points of the lever back up release (6) and pull out it in right direction.
(9) Unhook the EP lock spring (7) and remove the EP lock lever (8).
(10) Take off the E ring (9) and remove the plate-FG (1st ) (10) and gear assy-clutch (A).
(11) Unlock 2 latches to remove the motor assy-main (12) and idle gear (13).
(12) Unscrew 2 screws (14) and remove the motor -main (15).
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Chapter 3 Parts Replacement
Page: 40
(1) Remove the lever back up release. [See 3.3.12(8)] (But the roller transfer/feeder unit front/plate-FG have not be removed)
(2) Remove the cover rear (2). [See 3.3.6(5)]
(3) Loosen 2 screws (1), unlock the both side's latches and remove the cover rear (2).
(4) Unlock the latches on both sides of the guide assy-eject (3) and lifting it out.
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Chapter 3 Parts Replacement
Page: 41
(1) Remove the cover assy-side (L). [See 3.3.2 (1)]
(2) Unplug the connectors (1), (2).
(3) Unscrew 4 screws (3) and remove the heat assy (4) in the direction of the arrow by lifting the right side first.
Note !
As the heat assy (4) becomes high temperature soon after the power is turned off, start the work after it cools off sufficiently.
Carry out a reset of the counter after the replacement. (See Section 4.2)
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Chapter 3 Parts Replacement
Page: 42
(1) Remove the guide assy-eject. (See 3.3.13) (But roller transfer/feeder unit-front/plate-FG(F) have not be removed)
(2) Remove the gear roller (C) (1) and bush (2), warp (a) part of the plate-FG (BK) (3). Take off the carrier bearing (4) and remove the roller feed (c) (5) in the direction of the arrow.
Note ! Be careful not to deform (a) part of the plate-FG (BK) (3).
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Chapter 3 Parts Replacement
Page: 43
(1) Remove the heat Assy. [See 3.3.14]
(2) Remove the lever back up release. [See 3.3.12 (8)]
(3) Unlock the engagement with the plate-FG (BK) (1) and lift out the roller heat assy (2).
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Service Manual - OKIPAGE20
Chapter 3 Parts Replacement
Page: 44
(1) Remove the feeder unit -front. [See 3.3.10]
(2) Remove the roller assy-feed (1) by unlocking a latch.
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Chapter 3 Parts Replacement
Page: 45
(1) Remove the stacker assy 1. [See 3.3.6]
(2) Unplug the PC connector (2) and (2) LED cables (3) from the LED head (4).
(3) Open the hooks of the cover stacker (1) in the direction of the arrow and remove the LED head (4).
(4) Pull out the head spring (5) from the post.
Note: Don't remove two LED cable (3) from the PC connector (2).
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Chapter 3 Parts Replacement
Page: 46
(1) Pull out the case assy -cassette (1) from the printer.
(2) Remove the ROLLER Ass-Feed (2) and remove the ROLLER-Assy-Hopping (3).
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Chapter 3 Parts Replacement
Page: 47
(1) Turn the AC power switch off. Unplug the AC power cord from the outlet.
(2) Pull out the case Assy-Cassette (1) from the printer.[See 3.3.19(1)]
(3) Release two locks and remove frame assy-separation (2). (At this time, coil spring (3) is also remove.
Be careful not to lose this spring.)
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Chapter 3 Parts Replacement
Page: 48
(1) Open the stacker cover .
(2) Unlock the lock by lifting the TR gear (1) to remove the TR gear (1) and roller transfer (2).
Note ! Don't place the removed roller transfer directly on the desk and so on. When placing it, lay a paper and the like under it.
(3) Remove right and left, 2 bearings (3) from the frame-main by sliding them inside while pushing them.
At this time, 2 transfer springs R (4) would be detached simultaneously.
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Chapter 3 Parts Replacement
Page: 49
(1) Turn the AC power switch off. Unplug the AC power cord from the outlet.
(2) Remove Frame-Main [See.3.3.12(7)]
(3) Remove screw (1). Turn EP lock lever (L) Assy (2) in the direction of arrow (A) .
(4) Remove spring (3).
(5) Drop EP lock shaft (4) down and turn in the direction of arrows (B) and remove it.
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Chapter 3 Parts Replacement
Page: 50
(1) Turn the AC power switch off. Unplug the AC power cord from the outlet.
(2) Remove the frame main [See 3.3.12(7)]
(3) Press the clamp part of LEVER Assy.- Out Sensor (1). Remove the LEVER Assy.-Out Sensor (1) by pushing it upward from the lower side.
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Chapter 3 Parts Replacement
Page: 51
(1) Turn the AC power switch off. Unplug the AC power cord from the outlet.
(2) Remove the frame main [See.3.3.12(7)].
(3) Squeeze the clamp part of toner sensor lever (1) and remove the toner sensor lever (1) by pushing it upward from the lower side.
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Chapter 3 Parts Replacement
Page: 52
(1) Turn the AC power switch off. Unplug the AC power cord from the outlet.
(2) Remove the frame main [See 3.3.12(7)]
(3) Squeeze the clamp part of the paper sensor lever (1) and remove the paper sensor lever (1) by pushing it upward from the lower side.
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Chapter 3 Parts Replacement
Page: 53
(1) Turn the AC power switch off. Unplug the AC power cord from the outlet.
(2) Remove the frame main [See 3.3.12(7)]
(3) Squeeze the clamp part of two inlet sensor levers (1). Remove the inlet sensor levers (1) by pushing them downward.
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Chapter 3 Parts Replacement
Page: 54
(1) Turn the AC power switch off. Unplug the AC power cord from the outlet.
(2) Remove the frame main [See 3.3.12(7)]
(3) Unscrew 2 screws (1) and remove the BRACKET-AC (2).
(4) Unscrew 10 screws (3) and remove the connector (6) remove the Power supply unit
[AC-DC(120/230V)] (4) and Power supply unit (High voltage) (5).
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Chapter 3 Parts Replacement
Page: 55
(1) Turn the AC power switch off. Unplug the AC power cord from the outlet.
(2) Remove the frame main [See 3.3.12(7)]
(3) Remove screw (1) and then remove the PLATE-Base (2).
(4) Remove two Spacer-Cord (KGPS-5RF (4) and then remove FILM-Insulation (4).
(5) Remove four screws (5) and then remove the FRAME ASS-Hopping (6).
(6) Remove the GEAR-Z58 (9) and GEAR-Z42 (8). (At this time, the ADF Bearing (10) can also be detached simultaneously.)
(7) Remove the GEAR-Z38 (14), ADF Bearing (15), ROLLER-Guide (16) and SHAFT Hopping (17) and
Bracket-Sub roller (28). (At this time, the Kock Pin (18) can also be detached simultaneously.)
(8) Remove two screws (7) and then remove the SPRING-Release (11) and then remove the LEVER-Sub roller (12) and PLATE-Hopping (13).
(9) Remove the GEAR-Planet (Z28 (19), Plate-Planet (20), BRACKET-Spring (Sub) (21) and
SPRING-Sub ROLLER (22).
(10) Press the clamp part of Lever-Paper end (23) and Lever-Paper near end (24). Remove the
Lever-Paper end (23) and Lever-Paper near end (24) by pushing it upward from the FRAME Hopping (28).
(11) Remove the Connection Cord-Wire (25) and TR-23-11-14 R CORE (26) together.
(12) Remove two Photo Sensor (27).
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Chapter 3 Parts Replacement
Page: 56
(1) Turn the AC power switch off. Unplug the AC power cord from the outlet.
(2) Remove Frame Main [See 3.3.12(7)]
(3) Remove PLATE-Base and FRAME Assy Hopping [See 3.3.28 (5)]
(4) Unscrew two screw (1) and then remove Guide Assy-Cassette (L) (2).
(5) Remove SPRING-Sheet (3) and then remove LINK-Sheet (4) and pull block (5). (Pay attention the direction of hook of SPRING-Sheet (3).)
(6) Remove spring (6) and then remove cassette stopper (7).
(7) Remove screw (8) from LINK-Sheet (4) and then remove link support (9) and Roller-link (10).
(8) Remove Earth Plate L (11) and Plate-Earth (link) (12).
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Chapter 3 Parts Replacement
Page: 57
(1) Turn the AC power switch off. Unplug the AC power cord from the outlet.
(2) Remove Frame Main [See 3.3.12(7)]
(3) Remove PLATE-Base and FRAME Assy Hopping [See 3.3.28 (5)]
(4) Unscrew two screw 1 and then remove Guid Assy-Cassette (R) (2).
(5) Remove SPRING-Sheet (3) and then remove LINK Sheet (4) and pull block (5). (Pay attention the direction of hook of SPRING-Sheet (3).)
(6) Remove spring (6) and then remove cassette stopper (7).
(7) Remove screw (8) from LINK-Sheet (4) and then remove link support (9) and Roller-link (10).
(8) Unscrew two screws (11) and remove the Square shaped connector (176496-1) (12) and Nylon
Connector Cord (13) and TR-23-11-R CORE (14).
(9) Unscrew two screws (15) and remove the two Plate Earth (Bottom) (16).
(10) Unscrew two screws (17) and remove the Square shaped connector (5-176496-1) (18) and
Connection Cord Wire (19) and TR-23-11-R CORE (20).
(11) Unscrew a screw (21) and remove the Detector spring (22).
(12) Unscrew a screw (23) and remove the Board PXC (24).
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Service Manual - OKIPAGE20
Chapter 4 Adjustment
Page: 58
This chapter explains the adjustment necessary when replacing a part. Adjustment is made by changing a parameter value set in EEPROM on the controller PCB. A parameter is able to set with the key operation on the operator panel. This printer has three kinds of the maintenance mode, it is required to select one of the maintenance mode necessary when replacing a part.
4.1 Maintenance Modes and Functions
4.2 Adjustment When Replacing a Part
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Service Manual - OKIPAGE20
Chapter 4 Adjustment
Page: 59
User maintenance mode
System maintenance mode
Engine maintenance mode
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Chapter 4 Adjustment
Page: 60
To enter the user maintenance mode, turn on the POWER switch while pressing the MENU key.
[Function]
There are 13 functions as follows.
Menu reset
Hex dump
Drum counter reset
Resource Save (Second, Third, Front Tray)
Receive Buffer Size
Operator panel menu disable
X adjust
Y adjust
Duplex Adjust
Select paper source command parameter
Page placement
Setting
Cleaning cycle
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Chapter 4 Adjustment
Page: 61
Note: This mode is used only by service persons and it should not be released to the end-users.
To enter the system maintenance mode, turn on the POWER switch while pressing the RECOVER key.
[Function]
There are 8 functions as follows.
Page count display
Page count printing enable/disable
Rolling ASCII continuous printing
RS232C LOOP TEST
EEPROM reset
HSP ERROR recovery
HSP ERROR count display
HSP ERROR count reset
SIDM enable/disable
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Chapter 4 Adjustment
Page: 62
Note: This mode is used only by service persons and it should not be released to the end-users.
To enter the engine maintenance mode, turn on the POWER switch while pressing the FORM FEED key and ENTER key.
[Function]
There are 19 functions as follows.
Head type setting
Head drive time setting.
Head drive time setting at Auto head type
Head strobe time at 600 x 1200 dpi
Printing start position setting
Drum counter total display
Drum count display
Setting of standard paper feed length
Setting of front feeder paper feed length
Setting of second tray paper feed length
Selection of second tray feeder download table
Setting of third tray paper feed length
Selection of third tray feed download table
Setting of Multi-purpose feeder paper feed length
Selection of Multi-purpose feeder download table
Setting of duplex feed length
Fuser count indication
Fuser count reset
Engine reset
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Service Manual - OKIPAGE20
Chapter 4 Adjustment
Page: 63
To enter the user maintenance mode, turn the power supply ON while pressing the Menu key.
This mode uses the menu for function selection.
The user maintenance mode provides the following functions:
(1) Menu reset
All settings for Menu level-1 are reset to the factory default values. The menus for all executable emulations including options are reset to the factory default values.
The operation mode starts automatically upon completion of resetting.
(2) Hex dump
The data received from the host is dumped in hexadecimal notation to the printer.
Printing is activated automatically when the received data exceeds one page. If the received data is less than one page, printing can be activated manually be pressing the Form Feed key after selecting the OFF LINE mode by pressing the ON-LINE key. (Automatic activation of printing even when the received data is less than one page by selecting the Auto Eject function on the menu.)
To exit from this mode is turning the power OFF.
(3) Drum counter reset
This function resets the drum life data when the user replaces the image drum unit.
The operation mode starts automatically upon completion of resetting.
(4) Resource Save
Set the storage area size of resource to be stored between PCL and Postscript.
(5) Receive Buffer Size
Set the receiving buffer.
(6) Operator panel menu disable
This function is for enabling and disabling the operator panel menu functions (Menu 1, Menu 2, Tray
Select, Copies and Paper Size).
(7) X ADJUST
This function is used to adjust the printing start position within the range of ±2 mm in 0.25 mm steps in the X direction.
(8) Y ADJUST
This function is capable to adjust the printing start position within the range of ±2 mm in 0.25 mm steps in the Y direction.
(9) Duplex adjust
The function which performs a correction in Y direction towards the sheet supplied from the tray in double-sided printing.
(10) Select paper source command parameter (Second tray)
The function which sets the parameter selecting the second tray by paper source command on PCL.
(11) Select paper source command parameter (Third tray)
The function which sets the parameter selecting the third tray by paper source command on PCL.
(12) Select paper source command parameter (Front tray)
The function which sets the parameter selecting the front tray by paper source command on PCL.
(13) Page placement
The function which aligns a printing image to the right.
(14) SETTING
This function is used to adjust to improve print quality.
Rough/thick paper, Low temperature/humidity and/or blotchy faded print appeared.
-2 } Rough/thick paper, low temperature/humidity and/or blotchy faded print appeared.
-1 } Rough/thick paper, low temperature/humidity and/or blotchy faded print appeared.
0 Normal media/environmental conditions.
+1 } Rough papers, high temperature/humidity and/or snowy print of high density pattern.
+2 } Rough papers, high temperature/humidity and/or snowy print of high density pattern.
(15) Cleaning cycle
Set the page interval to perform Cleaning Sequence.
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Chapter 4 Adjustment
Page: 64
The system maintenance mode is set when the power is turned ON while pressing the Recover key.
This mode adopts the menu for function selection.
The system maintenance mode is provided with the following functions:
(1) Page count display
The total number of pages counted at the engine is displayed on the LCD.
(2) Page count printing enable/disable
This function selects whether to include (enable) or exclude (disable) the total number of printed pages counted at the engine at the time of menu printing.
(3) Rolling ASCII continuous printing
The rolling ASCII pattern is printed continuously for various engine tests.
Press the ON-LINE key to cancel this mode.
(4) RS232C LOOP TEST
Performs a loop test of RS 232C.
(5) EEPROM reset
All EEPROM areas including Menu level-2 to the factory default values.
The following items are excluded
* Head drive time setting
* Fine adjustment of printing start position
* Standard tray paper feed amount setting
Transition to the operation mode occurs upon completion of resetting.
Press the Menu key to update each category.
The operation returns to the first category after updating the last category.
(6) HSP ERROR recovery
Select HSP ERROR recovery function either recover or stop.
(7) HSP ERROR count
Display total HSP ERROR count.
(8) HSP ERROR count reset
Reset the HSP ERROR counter.
(9) SIDM enable/disable
If it's selected disable, cannot select SIDM emulations by Menu.
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Chapter 4 Adjustment
Page: 65
The engine maintenance mode is activated when the power is turned ON while pressing to the Form
Feed key and Enter key.
This mode adopts the menu for function selection.
The method for exit from this mode depends on the setting.
The engine maintenance mode is provided with the following functions:
(1) Head type setting select LED Head type
Sets the select LED head type.
(2) Head drive time setting
Sets the drive time of the LED head.
(3) Head drive time setting at auto head type
This function sets head drive time, when " HEADTYPE= AUTO" is selected.
(4) Head strobe time at 600 x 1200 dpi
This function sets head strobe time at 600 x 1200 dpi.
(5) Printing start position setting
Sets the printing start position.
(6) Drum count total display
Displays on the LCD the total number of drum revolutions in the unit counted at the engine.
(7) Drum count display
Displays on the LCD the total number of EP drum revolutions counted at the engine.
(8) Setting of standard tray paper feed length
This function sets the paper feed length of standard tray paper.
(9) Setting of front feeder paper feed length
This function sets the paper feed length of the front feeder.
(10) Setting of High Capacity Second Paper Feeder paper feed length
This function sets the paper feed length of the High Capacity Second Paper Feeder.
(11) Selection of High Capacity Second Paper Feeder download table
This function selects the download table for the High Capacity Second Paper Feeder.
(12) Setting of High Capacity Third Paper Feeder paper feed length
This function sets the paper feed length of the High capacity Third paper feeder.
(13) Selection of High Capacity Third paper feeder download table
This function selects the download table for the High capacity third paper feeder.
(14) Setting of Multi Feeder paper feed length
This function sets the paper feed length of the Multi Feeder.
(15) Selection of Multi Feeder download table
This function selects the download table for the Multi Feeder.
(16) Setting of duplex feed length
This function sets the paper feed length of the duplex.
(17) Fuser count display
Displays on the LCD the total number of printed pages counted at the engine.
(18) Fuser count reset
When the fuser unit is replaced, the maintenance person uses this fuser count reset function to reset the fuser lifetime.
After the fuser counter is reset, the engine enters into the operation mode automatically
(19) Engine reset
All EEPROM areas used by the engine are reset to the factory default values.
The following items are excluded:
* Menu level-1
* Menu level-2
* Operator panel menu disable/enable
* Page print disable/enable
Transition to the operation mode occurs upon completion of resetting.
Note: Do not change the default value of (1)~ (5), (8)~ (16) they are the parameter for adjusting in the factory.
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Service Manual - OKIPAGE20
Chapter 4 Adjustment
Page: 66
The corresponding area of the EEPROM is initialized for each event as shown Table 4-1 and Table 4-2.
Table 4-1 EEPROM Initial Setting Range
Note 1: The items for each maintenance menu of the events are to be listed.
Table 4-2 Items Related to Each Maintenance Menu of EEPROM Reset
Users Maintenance Menu
Range
Resource Save
Receive buffer
Enable/Disable of Operator
Panel Menu Function
X/Y/DUP ADJUST
Paper Feed Command of
2nd/3rd/Front Trays
Print Shift to Left Based
Cleaning Cycle
Systems
Maintenance Menu
Range
Enable/Disable of
Total Number of
Menu Print
Enable/Disable of
Switching SIDM
Emulation
Engine Maintenance Menu Range
Correction head type (excluding the time upon engine maintenance engine reset)
LED head drive time (excluding the time upon engine maintenance engine reset)
600 x 1200 dpi strobe time relative value (excluding the time upon engine maintenance engine reset)
Print start position
Paper feed distance from each tray
Paper feed distance from the Duplex
Unit
Control parameter of each option tray
Engine test
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Service Manual - OKIPAGE20
Chapter 4 Adjustment
Page: 67
Adjustment necessary when replacing one of the following parts.
Part Replaced
Image Drum Cartridge
Fuser Unit
Adjustment
Reset the image drum counter (Refer to User's Manual)
Reset the fuser counter (Refer to Chapter 4.2.1)
4.2.1 Resetting the fuser counter
4.2.2 Destination setting
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Chapter 4 Adjustment
Page: 68
(1) The fuser counter can be reset in the engine maintenance mode.
(2) Resetting method
Operation
With the ENTER and FORM FEED keys pressed, turn the printer power on.
LCD Display
Press the MENU key until FUSER COUNT
RESET is displayed.
Press the ENTER key to reset the fuser count. After the initializing process is completed, the printer enters into the operation mode.
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Service Manual - OKIPAGE20
Chapter 4 Adjustment
Page: 69
The desired destination can be set by turning the power on while depressing two keys corresponding to the destination according to the following table.
Destination
ODA
OEL
OKI-INT-A
(Australia, etc.)
OKI-INT-L
(Singapore, etc.)
Keys to be depressed
MENU,
MENU,
MENU, PAPER SIZE
MENU, TRAY TYPE
This function shall not be open for users.
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Service Manual - OKIPAGE20
Chapter 5 Periodic Maintenance
Page: 70
As specified below, the parts shall be replaced periodically.
Part name Condition for replacement
5,000
Cleaning Remarks
Toner cartridge
Image drum cartridge 30,000
LED head.
Regist Paper dust.
LED head.
Regist Paper dust.
Consumables
Consumables
Heat Assy
Transfer Roller
Back up Roller Assy
200,000
200,000
200,000
Maintenance Kit
Maintenance Kit
Maintenance Kit
Feed Roller Assy
Hopping Roller Assy
200,000
200,000
Maintenance Kit
Maintenance Kit
Separation Frame Assy 200,000 Maintenance Kit
Note: Maintenance Kit shall be replenished by user's calling to serviceman.
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Service Manual - OKIPAGE20
Chapter 5 Periodic Maintenance
Page: 71
Remove any toner and dust. Clean inside and around the printer with a piece of cloth when necessary.
Use the handy cleaner (VACUUM) for cleaning the printers interior.
Note: Do not touch image drum, LED lens array, and LED head connector block.
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Service Manual - OKIPAGE20
Chapter 5 Periodic Maintenance
Page: 72
Clean the LED lens array or replace the toner cartridge when white lines or stripes (void, light printing) are generated vertically down the page.
Note: The LED lens array must be cleaned with an LED head cleaner.
White lines or stripes
(void, light printing)
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Service Manual - OKIPAGE20
Chapter 5 Periodic Maintenance
Page: 73
(1) Open the stacker assy and remove I/D unit.
(2) After cleaning LED head, wipe off the paper powder by LED LENS CLEANER and remove the paper powder.
(3) Take the remove paper powder out of the printer unit in such a way as not to spill it, and then waste it.
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Service Manual - OKIPAGE20
Chapter 6 Troubleshooting Procedures
Page: 74
(1) Check the basic check points covered in the user's manual.
(2) Gather as much information on the problem from the customer as possible.
(3) Perform inspections in conditions close to those in which the problem had occurred.
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Service Manual - OKIPAGE20
Chapter 6 Troubleshooting Procedures
Page: 75
(1) Is the printer being run in proper ambient conditions?
(2) Have the supplies (toner) and the routine replacement part (image drum cartridge) been replaced properly?
(3) Is the paper normal? See paper specifications section.
(4) Has the image drum cartridge been loaded properly?
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Service Manual - OKIPAGE20
Chapter 6 Troubleshooting Procedures
Page: 76
(1) Do not touch, or bring foreign matter into contact with the surface of the image drum.
(2) Do not expose the image drum to direct sunlight.
(3) Keep hands off the fuser unit as it is heated during operation.
(4) Do not expose the image drum to light for longer than 5 minutes at room temperature.
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Service Manual - OKIPAGE20
Chapter 6 Troubleshooting Procedures
Page: 77
(1) Operator panel display
The failure status of this printer is displayed on the liquid crystal display (LCD) in the operator panel. Take proper corrective action as directed by messages that are displayed on the LCD.
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Service Manual - OKIPAGE20
Chapter 6 Troubleshooting Procedures
Page: 78
If troubles should develop in this printer, troubleshoot in the following procedure flow:
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Service Manual - OKIPAGE20
Chapter 6 Troubleshooting Procedures
Page: 79
Table 6-1 lists the status and troubles that may be indicated by messages on the LCD.
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Service Manual - OKIPAGE20
Chapter 6 Troubleshooting Procedures
Page: 80
If troubles are not correctable from the LCD message trouble list, follow the troubleshooting flowcharts given here to deal with them.
Note: When replacing the Main board, install the EEPROM from the old Main board, onto the new Main board.
[JAM error]
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Service Manual - OKIPAGE20
Chapter 6 Troubleshooting Procedures
Page: 81
Procedures for troubleshooting if abnormal images have been printed out are explained below. Figure 6-3 below shows typical abnormal images.
Trouble
Images are light or blurred as a whole (Figure 6-4, (A)
Dark background density (Figure 6-4, (B)
Blank paper is output (Figure 6-4, (C)
Black belts stripes in the vertical direction (Figure 6-4, (D)
Cyclical defect (Figure 6-4, (E)
Print voids
Poor fusing (Images are blurred or peeled off when touched by hands)
White belts streaks in the vertical direction (Figure 6-4, (F)
Snowy print of high density pattern (Figure 6-4, (H)
Blotchy faded print (Figure 6-4, (I)
Flowchart number
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(5) Cyclical error
Image drum
Frequency
3.17" (94.2 mm)
Remedy
Replace or clean the image drum cartridge.
Developing roller
Toner supply roller
Charging roller
Cleaning roller
Transfer roller
Heat roller
Back-up roller
2.05" (52.1 mm) Replace the image drum cartridge.
3.24" (82.24 mm) Replace the image drum cartridge.
1.37" (34.7 mm)
1.17" (29.8 mm)
2.28" (58 mm)
Replace the image drum cartridge.
Replace the image drum cartridge.
Replace the transfer roller.
3.46" (88 mm)
3.46" (88 mm)
Replace the fusing unit assy.
Replace the back-up roller.
Notes:
1. After replacing the image drum cartridge, set the printer in the user maintenance mode by turning the power on while pressing the MENU key, and reset the drum counter. (Refer to User's Manual.)
2 After replacing the fusing unit assy, set the printer in the engine maintenance mode by turning the power on while pressing the FORM FEED and ENTER keys, and reset the fuser counter. (Refer to See 4.1.)
Figure 6-5
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Service Manual - OKIPAGE20
Chapter 7 Wiring Diagram
Page: 82
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Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
(1) Main board (BOARD-AAA)
Service Manual - OKIPAGE20
Chapter 7 Wiring Diagram
Page: 83
(2) Power supply board (AC 120V/230V)
(3) Power supply board (High voltage)
(4) PostScript ROM module (BOARD-MSM or BOARD-FSL).
(1) BOARD-FSL
(2) BOARD-MSM
(5) Flash ROM module (BOARD-FSL).
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Service Manual - OKIPAGE20
Chapter 7 Wiring Diagram
Page: 84
Unit
Hopping motor
Circuit Diagram
Fan
Illustration Resistance
Between pins 1 and 2:
6.7 ohms
Between pins 3 and 4:
6.7 ohms
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(1) In case of EP ROM or OP ROM
Service Manual - OKIPAGE20
Chapter 7 Wiring Diagram
Page: 85
(2) In case of MASK ROM
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Service Manual - OKIPAGE20
Chapter 8 Parts List
Page: 86
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Service Manual - OKIPAGE20
Chapter 8 Parts List
Page: 87
5
6
7
3
4
1
2
No.
8
Part No.
40441001
40304101
40304401
40304301
40323401
40304001
40304501
40304503
Name
Cover-Side (L) Assy
Cover-Side(R)
Cover-Frame
Cover-Side(I/F)
Plate-Shield
Cover-Rear
Frame-OP Panel
Assy. (ODA)
Frame-OP Panel
Assy. (OEL)
40304502 Frame-OP Panel
Assy. (INT)
2381002P0007 SMCD6X280BDX10(B
L)
Qty Recommended
Qty
50 100 1000
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
3
3
3
3
3
3
3
3
3
5
6
6
6
6
6
6
6
6
6
10
1 3 6 9 2PA4128-1074
G001
10 40441301
11 40027002
Face-up Stacker
Assy.
Manual Feed Assy
ROLLER-Transfer
TR Gear
1
12 4PP4076-5042
P001
13 40378001
14
15
40378401
40607101
16 40496001
17 4PP4076-5067
P001
Contact Assy
CASE Assy-Cassette 1
Frame 1
Assy-Separation
PLATE-Damper
Earth Plate BK (R)
18 40285702 Board-AAA
19 8174627M0002 MX23C2410PC-10-07
5(Program ROM)
1
1
1
1
1
1
1
1
20 8174627M0001 MX23C2410PC-10-07
4(Program ROM)
21 40295701 Connection Cord Wire
(Power Supply)
1
1
22
23 40443501 DUPLEX UNIT (ODA) 1
1
1
1
1
1
1
0
0
2
2
2
0
4
3
3
3
3
3
3
3
3
5
5
5
3
8
6
6
6
6
6
6
6
6
10
10
10
6
12
Remarks
#
#
#
#
#
#
#
#
#
#
#
#
#
#
#
#
#
W/O ROM
Location: IC6
Location: IC8
#
#
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Service Manual - OKIPAGE20
Chapter 8 Parts List
Page: 88
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Service Manual - OKIPAGE20
Chapter 8 Parts List
Page: 89
No. Part No.
Name
1 40596901 FRAME Assy-Main
2 4LB-192600-6 Spring
(TSP3.3/0.35-16.2*33.9/230G)
Damper 3 4PB4083-6197
P001
4
5
6
40315801
4PP4076-5035
P001
7 4PP4076-5039
P001
8 40299701
LEVER-Separator
TR Bearing
TR Spring R
9
10
11
40032901
40033001
3PP4076-5082
P001
GUIDE ASSY - Discharge
Sensor-In
Spring-In Sensor
White Sensor Lever
12 4PP4076-5086
G001
13 40583801
14 40324001
15 4PP4076-5047
P001
Toner Sensor Lever (Adhesive)
LEVER Assy - Out sensor
SPRING-Out Sensor
EP Lock Shaft
EP Lock Lever L Assy 16 4PA4076-5048
G001
17 40597001
18 40301601
19 40301701
20 40614401
21 40301801
22 40301901
23 40323901
24 4PP4076-3949
P001
25 40316301
26 40302401
27 40298201
28 40298301
29 40298801
30 40332901
31 40320301
32 40299201
Code Assy - Front
ROLLER - Regist
ROLLER-Pressure
Bearing Assy - Registration
GEAR - Regist
GEAR - Pressure
ROLLER - Feed (C)
Bush
GEAR - Roller (C)
GEAR - Idle K
Motor Assy - Main
MOTOR - Main
PLATE - Damper
GEAR - Idle A
GEAR - Idle B
GEAR - Idle C
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
Qty Recommended
Qty
1
50
1
100
3
1000
6
Remarks
For
Maintenance
1 1 3 6
2 2 6 12
1
2
2
1
1
1
1
2
2
1
0
0
1
1
2
1
1
0
1
1
0
0
1
0
0
1
0
0
0
0
0
0
0
0
#
#
#
#
#
#
#
#
#
#
#
#
#
#
#
#
#
#
3
3
3
6
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
6
3
6
6
3
3
6
6
6
6
6
6
6
12
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
12
12
6
12
12
6
33 40302201
34 40299301
35 40299401
36 40299501
37 40299601
38 40302301
39 40313501
40 4PP4076-5308
P001
41 40371501
42 40432301
43 40313201
44 40371601
45 4PP4076-5044
P01
46 4PP4076-5045
P001
47 40301001
48 40316101
49 40316201
50 40302501
51 40300501
40300502
52 40306401
40306402
53 40307401
54 4PP4076-5191
G001
55 40587001
56 4PP4128-1164
P001
57 40365401
58 40409201
59 40409301
60 2PP4128-1096
P001
61 40450501
62 4PP4076-5009
P001
63 3PB4076-5290
P001
64 40307201
65 40443301
66 40547201
67 1051A1046C10
01
68 4PP4043-4489
P001
GEAR - Idle D
GEAR - Idle E
GEAR - Idle F
GEAR - Idle G
GEAR - Idle H
GEAR - Idle I
BEARING - Plastic (French)
Bearing
GEAR Assy - Clutch (Z50)
PLATE - FG (1st)
ROLLER Assy - Feed
GEAR Assy - Clutch (Z40)
EP Lock Lever R
EP Lock Spring
ROLLER ASSY - BK
GEAR - Idle (EA)
GEAR - Idle (EB)
LEVER - Back up release
HEAT - Assy (A4 120V)
HEAT - Assy (A4 230V)
LAMP - Halogen 750W 120V
LAMP- Halogen 750W 230V
GUIDE Assy - Eject
Damper Arm (Caulking)
Stacker Assy (For Maintenance) 1
HEAD Spring 2
SENSOR - Stack Full
Film - Guide
Film - FG
Cable Cover
HEAD Cable Assy
Washer
DC Fan Motor (92)
PLATE - FG (F)
Feeder Unit - FRONT
LED - Head
ZCAT1325-0530A R CORE
Bearing
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
2
1
0
0
1
2
0
1
1
0
2
1
0
2
2
2
2
1
1
1
0
0
0
0
0
1
0
2
1
0
0
0
0
0
0
0
0
0
6
6
20
6
6
10
6
6
6
6
10
6
6
6
6
20
20
10
10
6
6
12
6
6
6
6
6
12
6
6
6
6
6
6
6
6
6
12
#
#
#
#
#
#
#
#
3
#
#
#
#
#
#
#
#
#
#
#
#
#
#
#
#
#
#
#
#
3
3
10
3
3
5
3
3
3
3
5
3
3
6
3
3
3
5
5
10
10
3
3
6
3
3
3
6
3
3
3
3
3
3
3
3
3
3
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Service Manual - OKIPAGE20
Chapter 8 Parts List
Page: 90
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Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Service Manual - OKIPAGE20
Chapter 8 Parts List
Page: 91
No. Part No.
Name
1 40377601
2 40597101
GUIDE Assy - Cassette (L)
GUIDE Assy - Cassette (L)
3 4PP4122-1217
P001
4 40349102
5 40349701
6 4PP4076-5358
P001
7 40607201
8 4PP4076-5359
P001
9 4PP4043-4526
P001
10 40445601
11 40377701
12 40597201
Pull Block
Lever - Link (Caulking)
ROLLER - Link
Rink Support
Spring - Sheet
Cassette Stopper
Pressure Coil Spring
Earth Plate L
GUIDE Assy - Cassette (R)
GUIDE - Cassette (R)
13 40349101 Lever - Link (Caulking)
14 40368302 Board PXC
15 2201000P0140 Connector (IMSA-9714N-14A)
Nylon Connector Cord 16 4YS4011-4448
P003
17 4PP4076-5360
P001
Detector Spring
18 40389801
19 40518501
PLATE - Earth (Bottom)
PLATE - Earth (Link)
20 2201000P0141 Connector (IMSA-9714N-14B)
21 40375001 Connection Code - Wire
22 40316901
23 40377801
24 40597301
PLATE - Bottom
FRAME ASSY - Hopping
FRAME - Hopping
25 40322101
26 40317401
27 40442501
28 40371301
29 40317601
30 NK3-16SUS
31 4PP3522-3568
P001
32 40325401
PLATE - Hopping (caulking)
SHAFT - Hopping
ROLLER - Guide
ROLLER - Assy - Hopping
GEAR - Z38
Knock Pin
ADF Bearing
GAR - Z58
1
1
2
0
2
0
0
1
0
1
0
0
0
2
1
0
1
1
1
1
1
0
0
1
3
3
6
6
6
3
3
3
3
3
3
3
3
6
3
6
3
3
3
3
3
3
3
3
1
1
2
2
1
1
1
1
1
1
1
1
1
2
1
2
1
1
1
1
1
1
1
1
2
2
1
2
2
1
1
Qty Recommended
Qty
50 100 1000
1
1
3
3
6
6
Remarks
For
Maintenance
2 2 6 12
1
2
2
3
6
6
6
12
12
#
#
2
2
6
6
12
12
#
#
# For
Maintenance
#
#
#
To 2nd Tray
#
#
#
#
#
# To Duplex
# For
Maintenance
#
#
#
#
#
#
6
6
12
12
6
6
12
6
6
6
6
6
6
12
6
12
6
6
6
6
6
6
6
6
33 40325301
34 40317901
35 40318001
36 4YB4120-1137
P001
37 40375202
GEAR - Z42
Lever - Paper end
Lever - Paper near end
FX050 Photo Sensor
Connection Code - Wire
38 40375302 Connection Code - Wire 1
39 40337301
40 40337601
41 40433701
42 40358101
43 40317701
44 40367101
45 40607301
46 40313201
47 40371901
48 105A1051C200
1
49 40298001
50 40494601
51 40298101
52 40159901
52 40160001
LEVER - Sub roller (caulking) 1
ROLLER - Link (Sub) 1
Bracket - Sub roller (Press fitting) 1
Plate - Planet
GEAR - Planet (z28)
BRACKET - Spring (Sub)
SPRING - Sub Roller
1
1
1
1
ROLLER Assy - Feed
SPRING - Release
TR-23-11-14 R CORE
1
1
3
PLATE - Base
Spacer - Card (KGPS-5RF)
FILM - Insulation
Power Supply Unit [AC-DC
(120V)]
Power Supply Unit [AC-DC
(230V)]
1
1
2
1
1
53 40160301
54 40307301
Power Supply Unit [High Voltage) 1
BRACKET - AC 1
1
2
1
1
1
2
0
0
0
0
0
1
0
1
1
2
0
3
0
2
1
2
2
1
2
1
1
0
5
3
3
3
3
3
3
3
3
3
6
3
9
3
6
3
5
5
3
6
3
3
3
6
6
6
6
6
6
6
6
12
6
18
6
12
6
10
10
6
6
6
12
6
#
#
#
# To Paper
Exit
# To Paper
Near End
#
#
#
#
#
#
#
#
#
10
6
#
#
#
#
ODA(120V)
# ODA
(230V)
OEL/INT
#
#
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Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Service Manual - OKIPAGE20
Chapter A Centronics Parallel Interface
Page: 92
1) Connector
Printer side : 36-pin receptacle
Type 57RE-40360-830B-D29 (made by DDK) or equivalent
Cable side : 36-pin plug
Type 57-30360 (made by DDK) or equivalent
2) Cable
Cable length : 6 ft (1.8 m) max.
(a shielded cable composed of twisted pair wires is recommended for noise prevention)
Note: Cable is not provided.
3) Table of parallel I/F signals
Connector pin arrangement
4) Signal level
LOW : 0 V to +0.8 V
HIGH : +2.4 V to 5.0 V
5) Interface circuit a) Receiving circuit
DATA STROBE and INPUT PRIME b) Sending circuit
6) Timing charts
Compatible mode a) Data receiving timing
b) On-line ---> off-line switching timing by ON-LINE SW c) Off-line ---> on-line switching timing by ON-LINE SW d) INPUT PRIME timing (when set to the effective INPUT PRIME signal)
Nibble Mode - Conforms to IEEE 1284 spec.
ECP Mode - Conforms to IEEE 1284 spec.
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Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Service Manual - OKIPAGE20
Chapter B RS-232C Serial Interface
Page: 93
1) Connector
Printer side : 25-pin receptacle
Type 17LE-13250-27 (D4CC) (made by DDK) or equivalent
Cable side : 25-pin plug
Type 17JE-23250-02 (D8C) (made by DDK)
Note: Plug shall be able to be fixed with a lock screw.
2) Cable
Cable length: 6 ft (1.8m) max. (Cable shall be shielded)
Note: Cable is not provided.
3) Interface signal
Connector pin arrangement
When the Ready/Busy protocol is used for the buffer busy control method, the busy signal can be set to
Pin-20 (DTR) in the menu.
4) Signal level
MARK polarity : -3V to -15V (LOGIC = 1)
SPACE polarity: +3V to +15V (LOGIC = 0)
5) Interface circuit a) Receiving circuit b) Sending circuit
Note: The above signal level is for the case where 3KW x 15pF is being connected to the terminal.
6) Communications protocol a) READY/BUSY protocol b) X-ON/X-OFF protocol
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Service Manual - OKIPAGE20
Chapter C Duplex Unit
Page: 94
This Handbook is intended for the service personnel and describes the field maintenance methods for the
Duplex Unit option of the OKIPAGE20 Series Page Printer.
Refer to the USER'S MANUAL for operating instructions.
1.1 Functions
1.2 External View and Component Names
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Service Manual - OKIPAGE20
Chapter C Duplex Unit
Page: 95
DUPLEX UNIT is a unit, which is installed on the printer unit for controlling both-sided printing from the printer unit, intended for automatically reversing papers of which one side have been already printed and re-feeding them to the unit for printing other side.
The main functions are the followings:
Paper that can be used:
[Paper Type]
Cut Sheet Size: A4, Letter, Executive, Legal13, Legal14
Special Size: Paper Width: 210 to 216mm
Paper length: 279 to 356mm
[Weight]
16 lbs ~ 24 lbs (64 ~ 81 g/m
2
)
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Service Manual - OKIPAGE20
Chapter C Duplex Unit
Page: 96
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Service Manual - OKIPAGE20
Chapter C Duplex Unit
Page: 97
2.1 General Mechanism
2.2 JAM Release Mechanism
2.3 Removing/Installing Duplex Unit
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Service Manual - OKIPAGE20
Chapter C Duplex Unit
Page: 98
When the Duplex Unit receives an instruction for both-sided printing from the unit, the separator will be opened by the action of a solenoid within Duplex and the route will be shifted to the one into the Duplex after one-sided printing of papers, which are fed from the tray, are completed. At this time, as the roller (1) rotates in the direction of arrow A, a sheet is retracted in the rear of the cassette. And then, a given time later after the edge of the sheet passes through the IN SNS (DUP), the roller will reverse and the roller (1) rotates in the direction of arrow B and sending out the paper into the Duplex. After that, it passes though the roller (2) and (3), and is fed again into the unit, given a another-sided printing and ejected.
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Service Manual - OKIPAGE20
Chapter C Duplex Unit
Page: 99
The LEVER-Lock can be pulled outwards and the sheet route section of the Duplex opens by pulling out the cassette. This enables a jam to be released. Structurally, the LEVER-Release can be pushed up by back edge of cassette and the sheet route automatically close when the cassette is returned.
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Service Manual - OKIPAGE20
Chapter C Duplex Unit
Page: 100
Removing Duplex Unit
(1) Power Off and remove the Paper-Cassette from 1st tray.
(2) Remove the Lever-Release from the boss of the Hopping Frame.
(3) Rotate the LEVER-Lock (Dup) in the direction of the arrow to release the Lock.
(4) Pull the Duplex Unit out of the unit.
Installing Duplex Unit
(1) Hold the LEVER-Lock (Dup) in horizontal lock position. Then insert the Duplex Unit along the groove, up to accord both rear faces between printer and Duplex Unit.
Printer and Duplex Unit will connect automatically with built-in connector.
(2) Lock the Duplex Unit to the printer by turning the LEVER-Lock (Dup) to the next locking position as below.
(3) From front side of printer, snap fit LEVER-Release (Dup) into the boss in Hopping Frame.
(4) After installing Duplex Unit, put back the Paper Cassette into 1st Tray.
Note: As the direction is changed from/to CCW to/from CW with right and left, pay attention to it.
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Service Manual - OKIPAGE20
Chapter C Duplex Unit
Page: 101
This section covers the procedures for the disassembly, reassembly and installations in the field. This section describes the disassembly procedures, and for reassembly procedures, basically proceed with the disassembly procedures in the reverse order.
3.1 Precautions Concerning Parts Replacement
3.2 Parts Layout
3.3 Parts Replacement Methods
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Service Manual - OKIPAGE20
Chapter C Duplex Unit
Page: 102
(1) Parts replacements must be carried out, by first turning the printer power switch off "O" and removing the Duplex Unit from the printer.
(2) Do not disassemble the Duplex Unit if it is operating normally.
(3) Establish the extent of disassembly suitable for the purpose of the procedure, and do not disassemble any more than necessary.
(4) Only specified service tools may be used.
(5) Disassembly must be carried out according to the prescribed procedures. Parts may be damaged if such procedures are not followed.
(6) Small parts such as screws and collars can easily be lost, therefore these parts should be temporarily fixed in the original location.
(7) When handling printed circuit boards, do not use any glove which may generate static electricity.
(8) Do not place the printed circuit boards directly on the equipment or floor.
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Service Manual - OKIPAGE20
Chapter C Duplex Unit
Page: 103
This section describes the layout of the main components.
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Service Manual - OKIPAGE20
Chapter C Duplex Unit
Page: 104
This section describes the parts replacement methods for the components listed in the disassembly order diagram below.
3.3.1 Board-LEX
3.3.2 Conector (IMSA-9714N-14A)
3.3.3 Photo Sensor
3.3.4 SOLENOID Assy
3.3.5 Motor
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Chapter C Duplex Unit
Page: 105
(1) Remove two LEVER-Lock (DUP) (1) by rotating them in the arrow direction.
(2) Unscrews five screws (2) to remove the bracket (3).
(3) Unlatch all the nails and unplug all the connectors (4) to remove the Board-LEX (5).
[Note: When installing the Board-LEX, install it, positioning earth plate over the PCB.]
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Service Manual - OKIPAGE20
Chapter C Duplex Unit
Page: 106
(1) Remove two LEVER-Release (DUP) (1).
(2) Take away two SPRING-Support (2) to remove FRAME-MAIN (DUP) (3).
(Remove the FRAME-MAIN (DUP) by lifting in up from (A) side)
(3) Unscrew two screws (4) to unplug the Connector (IMSA-9714N-14A) (5).
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Service Manual - OKIPAGE20
Chapter C Duplex Unit
Page: 107
(1) Remove the Frame-Main (DUP) (see section 3.3.2).
(2) Release the lock to remove two SPRING-Lock (frame) (1) and two LEVER-Lock Assy (2).
(3) Pull out four SHAFT-Pinch (3) and remove four ROLLER-Pinch (4) and eight SPRING-Pinch (u) (5).
(4) Release the lock to remove two BRACKET-Pinch (6) , and two SPRING-Pinch (R) (9).
(5) Release the lock to remove LEVER Sensor (D-IN) (10) and SPRING-Sensor (11).
(6) Unplug the Connection Code-Wire (12) and remove Photo Sensor (13).
Note: It should not become a state such as of dotted line from the results of installation.
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Service Manual - OKIPAGE20
Chapter C Duplex Unit
Page: 108
(1) Remove the Frame-Main (DUP) (See section 3.3.2).
(2) Release the lock to remove Two LEVER Sensor (F/R) (1) and two SPRING-Sensor (F/R) (2).
(3) Unplug the Connection Code-Wire (3) and remove Photo Sensor (4).
(4) Take away the SPRING-SL (5) and two screws (6) to remove SOLENOID Assy (7).
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Service Manual - OKIPAGE20
Chapter C Duplex Unit
Page: 109
(1) Remove the Frame-Main (DUP) (See section 3.3.2).
(2) Unscrew two screws (1) to remove PLATE-Earth (F/R) (2).
(3) Unscrew three screws (3) to remove PLATE-Earth (F/R-2) (4).
(4) Disengage the latch to remove the Bearing L (5) , GEAR-Z40S8 (6) , Bearing (7) and ROLLER-Feed
(RV) 8). (At this time, Knock Pin (9) can be removed simultaneously.)
(5) Unscrew the screw (10) to remove the PLATE-Earth (BTM) (11).
(6) Disengage the latch and remove two PULLEY-MX25 (12) , Mini-Pitch Belt (13) and two Bushes (14).
(7) Disengage the latch to remove the Bearing Feed (15) and ROLLER Feed (F) (16).
(8) Remove the E-Ring (17) and Bush (18).
(9) Unscrew two screws (19) to remove the GEAR Assy (20).
(At this time, the GEAR-Z40S6 (21) , Knock Pin (22) and ROLLER-Feed (R) (23) can be removed.)
(10) Unscrew two screws (24) to remove Motor (25).
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4.1 Precautions Prior to the Troubleshooting
4.2 Preparations for the Troubleshooting
4.3 Troubleshooting Method
Service Manual - OKIPAGE20
Chapter C Duplex Unit
Page: 110
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Service Manual - OKIPAGE20
Chapter C Duplex Unit
Page: 111
(1) Go through the basic checking items provided in the Operator Guide.
(2) Obtain detailed information concerning the problem from the user.
(3) Go through the checking in the conditions similar to that in which the problem occurred.
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Chapter C Duplex Unit
Page: 112
(1) Display on the Operator panel
The status of the problem is displayed on the LCD (Liquid Crystal Display) on the Operator panel. Go through the appropriate troubleshooting procedures according to the messages displayed on the LCD.
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Chapter C Duplex Unit
Page: 113
When a problem occurs, go through the troubleshooting according to the following procedure.
4.3.1 LCD Status Message List
4.3.2 Troubleshooting Flow
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Chapter C Duplex Unit
Page: 114
The listing of the statuses and problems displayed in the form of messages on the LCD is provided in
Table 4-1.
Classification
Jam Error
Jam Error
Jam Error
Jam Error
Jam Error
Interface Timeout
LCD Status Message Description Recover Method
Informs that a jam occurs Remove all the papers in retracting papers into the reverse roller within the duplex Unit.
from the inside of printer unit and Duplex unit and close the cover.
Informs that a jam occurs Remove all the paper in retracting papers into the reverse roller within from the inside of printer unit and Duplex unit and the Duplex Unit.
close the cover.
Informs that a jam occurs Remove all the papers in reversing papers in the from the inside of printer reverse roller within the
Duplex Unit.
unit and Duplex unit and close the cover.
Informs that a jam occurs Remove all the papers in impinge-feeding papers within the Duplex from the inside of printer unit and Duplex unit and
Unit.
Informs that the 1st tray is pulled out in paper-remaining state when feeding papers within the Duplex.
close the cover.
Remove all papers from the inside of printer unit and Duplex unit and close the cover.
Informs that an I/F time-out occurs between the printer and Duplex.
- Verify connection of
LEX-PCB and square-shaped connector. Replace the square-shaped connector if necessary.
- Replace LEX-PCB.
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(JAM error)
Duplex INPUT JAM
Service Manual - OKIPAGE20
Chapter C Duplex Unit
Page: 115
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Service Manual - OKIPAGE20
Chapter C Duplex Unit
Page: 116
5.1 Interconnection Diagram
5.2 PCB Layout
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Chapter C Duplex Unit
Page: 117
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PCB-LEX
Service Manual - OKIPAGE20
Chapter C Duplex Unit
Page: 118
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Chapter C Duplex Unit
Page: 119
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Service Manual - OKIPAGE20
Chapter C Duplex Unit
Page: 120
No. Part No.
Name
1 40658401
2 40339401
3 40382201
4 40393201
5 40393202
6 40393301
7 40457701
8 40457801
COVER - Upper (DUP) (Affix)
ROLLER - Pinch
SHAFT - Pinch
SPRING - Pinch (U)
SPRING - Pinch (U)
SPRING - Pinch (R)
BRACKET - Pinch (R)
SHAFT - Pinch (R)
9 40443801
10 40541501
11 40541502
LEVER - Lock Assy
SPRING - Lock (frame)
SPRING - Lock (frame)
12
13
40338701
40393601
LEVER - Sensor (D-IN)
SPRING - Sensor (D-IN)
FX50 Photo Sensor 14 4YB4120-1137
P001
15 40598001 Core Assy - DUPLEX
16 2201000P0140 Connector (IMSA-9714N-14A)
17 40375201 Connection Code - Wire
18 40461601
19 40297201
20 40597501
21 4PB4076-5330
P001
22 40381801
23 40381901
24 4PP4043-4489
P001
25 4PP4076-3949
P001
26 40339901
27 40340301
28 40448101
29 40382001
30 4PP4076-5345
P001
31 4PP3527-5355
P001
32 40339801
33 40338901
34 40386501
FILM Pinch (R)
FRAME - Main (DUP)
GEAR Assy
Motor
ROLLER - Feed (F)
ROLLER - Feed (R)
Bearing - Feed
Bush
GEAR - Z40S6
PULLEY - MXL25
Mini-Pitch Belt
ROLLER - Feed (RV)
Bearing L
FX30 Bearing
GEAR - Z48S8
LEVER - Sensor (F/R)
SPRING - Sensor (F/R)
3
1
2
1
1
1
1
1
1
1
1
2
2
3
1
2
1
1
1
1
1
1
1
1
2
2
1
1
2
1
1
1
1
2
1
1
2
2
2
2
1
1
2
4
4
1
6
Qty Recommended
Qty
50 100 1000
1
6
4
4
3
18
12
12
6
36
24
24
2
2
2
2
2
1
1
1
1
2
6
6
6
6
6
3
3
3
3
6
6
6
12
12
12
12
12
12
6
6
Remarks
#
#
#
#
#
#
#
#
#
#
#
#
#
1
1
1
2
1
1
1
3
3
3
6
3
3
3
6
6
6
12
6
6
6
#
#
#
#
#
# To IN
Sensor
#
#
9
3
6
3
3
3
3
3
3
3
3
6
6
6
6
6
18
6
6
6
12
6
6
6
12
12
#
#
#
#
#
#
#
35 40375301
36 40483401
37 40395501
38 40382601
39 40322901
40 40382801
41 NK2-12SUS
42 RE4-SK
43 40339101
44 40338601
45 40393701
46 40495802
47 40521501
48 40318201
49 40382701
Connection Code - Wire
SOLENOID Assy
SPRING - SL
PLATE - Earth (F/R)
PLATE - Earth (F/R-2)
PLATE - Earth (BTM)
Knock Pin
E Ring
LEVER - Lock (DUP)
LEVER - Release (DUP
SPRING - Support
Board - LEX
Program ROM (IC1)
COVER - Bottom (DUP)
PLATE - Earth (MTR)
1
1
1
2
2
1
1
1
2
1
2
1
1
1
1
1
2
2
2
2
1
1
1
2
1
2
1
1
1
1
3
5
5
6
6
3
3
3
6
3
6
3
3
3
3
6
6
6
12
12
10
10
6
12
6
12
6
6
6
6
#
#
#
#
#
#
#
#
#
# To Front
Sensor
#
#
#
# W/O ROM
#
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Service Manual - OKIPAGE20
Chapter D Second / Third Paper Feeder
Page: 121
1.1 Functions
1.2 Appearance and Parts Name
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Service Manual - OKIPAGE20
Chapter D Second / Third Paper Feeder
Page: 122
This high capacity second/ third paper feeder, which is located under the printer, rotates the hopping motor according to the signal from the printer to supply papers to the printer automatically.
The main functions are as followings:
Applicable media:
[Paper Type]
Cut Sheet Size: A4, A5, B5, Letter, Executive, Legal13, Legal14
Special Size: Paper Width: 148 to 216mm
Paper length: 210 to 356mm
[Weight]
60 ~ 105 g/m
2
Paper loading capacity: 75 g/m
2
paper 530 sheets
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Service Manual - OKIPAGE20
Chapter D Second / Third Paper Feeder
Page: 123
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Service Manual - OKIPAGE20
Chapter D Second / Third Paper Feeder
Page: 124
2.1 Driving Mechanism
2.2 Hopper Mechanism
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Service Manual - OKIPAGE20
Chapter D Second / Third Paper Feeder
Page: 125
The high-capacity second/ third paper feeder only a top paper which is set in the cassette by a signal from the printer.
(1) Second paper feeder as an example is shown. First of all, the hopping motor rotates in the direction of arrow A. Roller C rotates by way of idle gear on the same shaft on which the hopping gear is placed. At the same time, the planetary gear D shifts in the direction of arrow E and a sub roller gear and a sub roller on the same shaft rotate. Roller C and sub roller make a paper hop. Also, the planetary gear G shifts in the direction of arrow H and Roller K rotates, and when the length of sheet is legal 13 inch or more, a hopping paper will be impinged to the regist roller within the printer. When the length of paper is A4 or less, hopping papers will be carried until the defined amount.
(2) When the length of paper is A4 or less, the hopping roller rotates in the direction of arrow B next. At this time, the planetary gear G shifts in the direction of arrow I to rotate Roller K and impinge the papers, which are carried to the defined amount, to the regist roller within the printer. During the hopping roller is rotating, Roller C is racing because it includes one-way bearing. At the same time, planetary gear D shifts in the direction of arrow F and the sub roller gear and another sub roller on the same shaft won't rotate.
(3) In the third paper feeder, when the length of paper is legal 13 inch or more, and if the rotating direction is arrow A', papers will be carried to the defined amount without being impinged to the regist roller, and then the rotating direction of the hopping roller will be changed to arrow B'. When the rotating direction of the hopping roller A' arrow direction, the motion is same as
(1). When B' arrow direction, the motion will be same as (2) until Roller K' begin to rotate. The planetary gear M' will shift in the direction of arrow L by way of the gear O' which begin to rotate at the same time when the roller K' does. And gear N rotates, resulting in rotating the gear J and roller K on the same shaft, and impingeing papers to the regist roller within the printer.
At this time, as the gear O and gear P engaged by the planetary gear G on the same shaft, on which the gear J and roller K are placed, includes an one-way clutch gear, the planetary gear G won't rotate.
Impinged papers are, afterwards, fed by the control of printer's inside.
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Service Manual - OKIPAGE20
Chapter D Second / Third Paper Feeder
Page: 126
The hopper is a motion where papers are automatically sent into the printer one by one. When papers are set to the cassette, the feeding motion is activated by the hopping motor to send only a top paper which is caught on the brake shoe.
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Service Manual - OKIPAGE20
Chapter D Second / Third Paper Feeder
Page: 127
In this section, the removing and installing procedure of assembly and unit in field are described. Although this section describes the removing procedure, the installing procedure is basically to conduct the removing one in reverse.
3.1 Precautions Concerning Parts Replacement
3.2 Parts Layout
3.3 Parts Replacement Methods
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Service Manual - OKIPAGE20
Chapter D Second / Third Paper Feeder
Page: 128
(1) Parts replacements must be carried out, by first turning the printer power switch off "O" and removing the High Capacity Second / Third Paper Feeder from the printer.
(2) Do not disassemble the Second/Third Paper Feeder if it is operating normally.
(3) Establish the extent of disassembly suitable for the purpose of the procedure, and do not disassemble any more than necessary.
(4) Only specified service tools may be used.
(5) Disassembly must be carried out according to the prescribed procedures. Parts may be damaged if such procedures are not followed.
(6) Small parts such as screws and collars can easily be lost, therefore these parts should be temporarily fixed in the original location.
(7) When handling printed circuit boards, do not use any glove which may generate static electricity.
(8) Do not place the printed circuit boards directly on the equipment or floor.
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Service Manual - OKIPAGE20
Chapter D Second / Third Paper Feeder
Page: 129
This section describes the layout of the main components.
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Service Manual - OKIPAGE20
Chapter D Second / Third Paper Feeder
Page: 130
This section describes the parts replacement methods for the components listed in the disassembly order diagram below.
High Capacity
Second / Third Paper Feeder Roller assy hopping, Roller assy feed (3.3.1)
Cover front assy (3.3.2)
Board-BBB (3.3.3)
Lever paper end, Lever paper near end (3.3.4)
Motor (3.3.5)
Connector (IMSA-9714N-14B), Connector (IMSA-9714N-14A) (3.3.6)
Frange Pulley, Pulley Idle, Mini Pitch belt, Plate Earth shaft, Gear double, Tray switch assy (3.3.7)
Roller feed (3.3.8)
Bracket sub roller (3.3.9)
Frame side (L (3.3.10)
Frame side R (3.3.11)
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Service Manual - OKIPAGE20
Chapter D Second / Third Paper Feeder
Page: 131
(1) Remove the Case assy cassette (1).
(2) Disengage latchs to remove the Roller assy hopping (2).
(3) Disengage latchs to remove the Roller assy feed (3).
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Service Manual - OKIPAGE20
Chapter D Second / Third Paper Feeder
Page: 132
(1) Unscrew two screws (1) to remove the Cover front assy (2).
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Service Manual - OKIPAGE20
Chapter D Second / Third Paper Feeder
Page: 133
(1) Unscrew a screw (1) to remove the PCB cover bracket (2).
(2) Take away all connectors (3) and three screws (4) to remove the Board-BBB (5).
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Service Manual - OKIPAGE20
Chapter D Second / Third Paper Feeder
Page: 134
(1) Unscrew five screws (1) to remove roller cover bracket (2) and PLATE-Earth (L) (3).
(2) Disengage latches to remove the Lever paper end (4) and Lever paper near end (5).
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Service Manual - OKIPAGE20
Chapter D Second / Third Paper Feeder
Page: 135
(1) Remove the Cover front assy (See section 3.3.2).
(2) Remove the PCB cover bracket (See section 3.3.3).
(3) Remove the roller cover bracket (See section 3.3.4).
(4) Unscrew seven screws (1) to remove the bottom bracket (2).
(5) Unscrew five screws (3) to remove the Frame side (L) assy (4) and Frame side (R) (5).
(6) Take away two screws (6) and connector to remove the Motor (7).
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Service Manual - OKIPAGE20
Chapter D Second / Third Paper Feeder
Page: 136
(1) Remove the Motor (See section 3.3.5).
(2) Unscrew two screws (1) to remove Connector (IMSA-9714N-14B) (2) and Plate-Earth (FR) (3).
(3) Unscrew two screws (4) to remove the connector (IMSA-9714N-14A) (5).
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Service Manual - OKIPAGE20
Chapter D Second / Third Paper Feeder
Page: 137
(1) Remove the Motor (See section 3.3.5).
(2) Remove the Connector (See section 3.3.6).
(3) Unscrew two screws (1) to remove the motor bracket (2).
(At this time, the Mini pitch belt (3) and Gear double (4) can be removed simultaneously.)
(4) Disengage latchs to remove the Frange pulley (5) and pulley Idle (6).
(5) Unscrew a screw (7) to remove the Plate Earth shaft (8).
(6) Unscrew a screw (9) to remove the Tray switch assy (10).
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Service Manual - OKIPAGE20
Chapter D Second / Third Paper Feeder
Page: 138
(1) Remove the Motor (See section 3.3.5).
(2) Remove the Connector (See section 3.3.6).
(3) Remove the motor bracket (See section 3.3.7).
(4) Disengage latchs to remove the Feeding bearing 1.
(5) Disengage latchs to remove the Pulley feed 2. (At this time, the Gear feed 3 and Bush 4 can be removed simultaneously.)
(6) Remove the Roller feed 5.
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Service Manual - OKIPAGE20
Chapter D Second / Third Paper Feeder
Page: 139
(1) Remove the Roller assy hopping and Roller assy feed. (See section 3.3.1).
(2) Remove the Roller feed (See section 3.3.8).
(3) Unscrew a screw (1) to remove the Bracket joint (2) , Spring joint (3) and Gear joint (4).
(4) Take away the E-ring (5) to remove the Gear hopping (6).
(5) Disengage latchs to remove the Gear hopping (2nd) (7). (At this time, the Bracket planet assy (8) can be removed simultaneously.)
(6) Take away two E-ring (9) and pull out the Knock pin (10) to remove the Gear Z38 (11).
(7) Remove two ADF bearing (12) , Spring release (13) , Bearing F (14) and Space hopping shaft (15) and remove the Shaft hopping (16) , Guide roller (17) , Lever release assy (18) and Bracket sub roller (19).
(8) Take away the Gear planet (z28) (20) to remove the Planet plate (21).
(9) Take away the Bracket spring (sub) (22) to remove the Spring sub (23).
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Service Manual - OKIPAGE20
Chapter D Second / Third Paper Feeder
Page: 140
(1) Remove the Frame side (L) assy (See section 3.3.5).
(2) Remove the Plate Earth (BL) (1).
(3) Take away the Spring (2) to remove the Cassette stopper (3).
(4) Take away the Spring sheet (4) to remove the Pull block (5). (At this time, Lever link (6) can be removed simultaneously.)
(5) Unscrew a screw (7) to remove the Link support (8).
(6) Remove the Roller link (9).
(7) Remove two Rubber foot (10).
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Service Manual - OKIPAGE20
Chapter D Second / Third Paper Feeder
Page: 141
(1) Remove the Frame side (R) assy (See section 3.3.5).
(2) Remove the Plate Earth (BR) (1).
(3) Take away the Spring (2) to remove the Cassette stopper (3).
(4) Take away the Spring sheet (4) to remove the Pull block (5). (At this time, Lever link (6) can be removed simultaneously.)
(5) Unscrew a screw (7) to remove the Link support (8).
(6) Remove the Roller link (9).
(7) Remove the Plate earth (10).
(8) Unscrew a screw (11) to remove the Detector spring (12).
(9) Unscrew a screw (13) to remove the Board-PXC (14).
(10) Remove two Rubber foot (15).
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Service Manual - OKIPAGE20
Chapter D Second / Third Paper Feeder
Page: 142
4.1 Precautions Prior to the Troubleshooting
4.2 Preparations for the Troubleshooting
4.3 Troubleshooting Method
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Service Manual - OKIPAGE20
Chapter D Second / Third Paper Feeder
Page: 143
(1) Go through the basic checking items provided in the Operator Guide.
(2) Obtain detailed information concerning the problem from the user.
(3) Go through the checking in the conditions similar to that in which the problem occurred.
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Service Manual - OKIPAGE20
Chapter D Second / Third Paper Feeder
Page: 144
(1) Display on the Operator panel
The status of the problem is displayed on the LCD (Liquid Crystal Display) on the Operator panel. Go through the appropriate troubleshooting procedures according to the messages displayed on the LCD.
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Service Manual - OKIPAGE20
Chapter D Second / Third Paper Feeder
Page: 145
When a problem occurs, go through the troubleshooting according to the following procedure.
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Service Manual - OKIPAGE20
Chapter D Second / Third Paper Feeder
Page: 146
The listing of the statuses and problems displayed in the form of messages on the LCD is provided in
Table 4-1.
Classification
Jam error
Paper size error
Tray paper Error
LCD Status Message mmmmmmmm:
Paper size in the tray being selected
Description
Notifies of occurrence of jam while the paper is being fed from the
Second / Third Paper
Feeder
Recover Method
- Check the paper in the
Second / Third Paper
Feeder. Carry out the recovery printing by opening the cover, removing jammed paper and closing the cover, and then turning the error display off.
- When the problem occurs frequently, go through the
Troubleshooting.
Notifies of incorrect size paper feeding from the
Second / Third Paper
Feeder.
Notifies of no paper or paper cassettes state of the Second / Third Paper
Feeder.
- Check the paper in the
Second / Third Paper
Feeder. Also check to see if there was a feeding of multiple sheets. Carry out the recovery printing by opening the cover, and then turning the error display off.
- Load the paper or paper cassette in the Second /
Third Paper Feeder.
Interface timeout Notifies of occurrence of interface timeout between the printer and the Second / Third Paper
Feeder.
- Verify connection of
Board - BBB and square-shaped connector. Replace the square-shaped connector if necessary.
- Replace Board - BBB.
* : 2 or 3
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( JAM error )
Paper Input Jam
Service Manual - OKIPAGE20
Chapter D Second / Third Paper Feeder
Page: 147
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Service Manual - OKIPAGE20
Chapter D Second / Third Paper Feeder
Page: 148
5.1 Interconnection Diagram
5.2 PCB Layout
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Service Manual - OKIPAGE20
Chapter D Second / Third Paper Feeder
Page: 149
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Service Manual - OKIPAGE20
Chapter D Second / Third Paper Feeder
Page: 150
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Service Manual - OKIPAGE20
Chapter D Second / Third Paper Feeder
Page: 151
No. Part No.
1 40346701
Name
Frame side (L) assy
Qty Recommended
Qty
50 100 1000
1 1 3 6
Remarks
#
2 40488701 Guide cassette L
3 4PP4122-1217
P001
4 40349102
5 4PP4076-5358
P001
6 40607201
7 4PP4076-5359
P001
8 4PP4043-4526
P001
9 4PB4016-1960
P002
10 3PP4076-5714
P001
11 40349701
12 40346801
13 40488801
Pull block
Lever link (caulking)
Link support
Spring - Sheet
Cassette stopper
Spring
Rubber foot
Guide rail plate L
Roller link
Frame side (R) assy
Guide cassette R
14 40349101
15 3PP4076-5715
P001
16 4PP4076-5360
P001
Lever link (Caulking)
Guide rail plate R
Detector spring
17 40368303
18 40433001
19 40347001
20 40366501
21 40247001
22 40348301
23 40422101
Board - PXC
Plate earth (R)
Cover front assy
Motor
Gear double
Pulley idle
Flang pulley
24 40444301 Tray switch assy
25 2201000P0141 Connector (IMSA-9714N-14B)
26 2201000P0140 Connector (IMSA-9714N-14A)
27 40247301 Roller feed
Feeding bearing 28 4PP4043-4489
P001
29 4PP4076-3949
P001
Bush
30 40247101
31 40247201
32 40247801
Gear feed
Pulley feed
Bracket joint
33
34
40433401
40247701
35 40247501
36 5PP3522-3568
P001
37 40433701
38 40317701
39 40358101
40 40367101
Spring joint
Gear joint
Shaft hopping
ADF bearing
Bracket sub roller (caulking)
Gear planet (z28)
Plate planet
Bracket spring (sub)
0
1
1
1
1
1
1
1
2
0
1
1
1
1
2
1
1
2
1
1
0
0
1
1
0
2
0
4
1
1
1
1
2
1
1
1
2
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
2
1
1
1
1
1
1
2
2
2
4
1
1
1
1
2
1
1
1
2
1
2
6
6
6
6
6
6
6
6
6
6
6
12
6
12
6
6
6
6
6
12
6
6
6
6
12
12
12
24
6
6
6
6
12
6
6
6
12
6
12
#
#
#
#
#
#
# For
Maintenance
#
#
#
#
#
#
#
#
# For
Maintenance
#
#
#
#
#
#
#
#
#
To Printer or
2nd Tray
To 3rd Tray
#
3
3
3
3
3
3
3
3
6
3
3
3
3
3
6
3
3
6
3
3
3
3
3
3
6
6
6
12
3
3
3
3
6
3
3
3
6
3
6
41 40607301
42 40317601
43 40385901
44 40363301
45 40442501
Spring sub roller
Gear z38
Lever release assy
Spring release
46 4PP4076-5308
P001
47 40363401
Guide roller
Bearing F
48 40348401
49 40348501
50
51
40317901
40318001
52 40387101
53 40375101
Space hopping shaft
Gear hopping (2nd)
Bracket planet assy
Lever paper end
Lever paper near end
Board - BBB connection code - wire
54 4LP-1313-121 Mini pitch belt
55 40371301 Roller assy hopping
56 40313201
57 40378401
58 40607101
59 40496001
60 NK3-16SUS
61 40387401
62 40387601
63 40387501
64 40387301
65 40432901
66 40583601
Roller assy feed
Case assy cassette
Separator frame assy
PLATE - Damper
Knock Pin
Plate - Earth (FR)
Plate - Earth (Shaft)
Plate - Earth (BR)
Plate - Earth (BL)
Plate - Earth (R)
Core Assy - 2nd Tray
1
1
0
1
2
1
1
2
1
1
0
1
1
0
0
1
1
0
1
1
0
0
0
1
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
3
3
3
3
6
3
3
6
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
6
3
6
6
6
6
6
12
12
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
12
6
#
#
#
#
#
#
#
#
#
To 3rd Tray
To Printer or
2nd Tray
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Service Manual - OKIPAGE20
Chapter E Multi-Feeder
Page: 152
This Handbook is intended for the service personnel and describes the field maintenance methods for
Multi Feeder option of the OKIPAGE 20 Series LED Page Printer.
Refer to the USER'S MANUAL for operating instructions.
1.1 Functions
1.2 External View and Component Names
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Service Manual - OKIPAGE20
Chapter E Multi-Feeder
Page: 153
This Multi Feeder is installed on the front section of the printer, and it supplies paper automatically through the operation of hopping motor, which is driven by signals sent from the printer.
The main functions are the followings:
Paper that can be used:
Paper type
Plain paper
Thick paper, OHP film
Post card, label sheet
Envelope
Paper size
A6 (106 x 148 mm) ~ A4
Post card - A4-size equivalent
Quantity of paper
64 - 90 g/m
2
64 - 90 g/m
2
64 - 128 g/m
2
C5, DL, COM-10, COM-9, Monarch 64 - 90 g/m
2
* approximately 50 sheets of envelopes can be set at a time.
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Service Manual - OKIPAGE20
Chapter E Multi-Feeder
Page: 154
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Service Manual - OKIPAGE20
Chapter E Multi-Feeder
Page: 155
2.1 General Mechanism
2.2 Hopper Mechanism
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Service Manual - OKIPAGE20
Chapter E Multi-Feeder
Page: 156
The sheet (or envelope) at the very bottom of the stack is fed into the printer, one at a time, when the Multi
Feeder receives the signal from the printer.
(1) First, the hopping motor rotates in the direction of arrow D. The planet gear F moves to the direction of arrow G, and drives rollers A and B. The roller C is linked to pulley I which is on the same shaft as roller A, and it also turns at the same time as roller A. The paper is fed for a predesignated distance until the leading edge reaches roller C.
(2) Next, the hopping motor rotates in the direction of arrow E. The planet gear F moves to the direction of arrow H, and drives idle gear J. The rotation of idle gear J is transmitted to the gears linked to it, and drives pulley I on the same shaft as roller A, turning roller C to feed the paper into the printer, until it reaches the registration roller of the printer. During this process, a one-way bearing is engaged at pulley I so that the rotation of pulley I is not transmitted to roller A, preventing any feeding of papers by roller A.
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Service Manual - OKIPAGE20
Chapter E Multi-Feeder
Page: 157
The hopper automatically feeds the printer with the paper being set, single sheet at a time.
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Service Manual - OKIPAGE20
Chapter E Multi-Feeder
Page: 158
This section covers the procedures for the disassembly, reassembly and installations in the field. This section describes the disassembly procedures, and for reassembly procedures, basically proceed with the disassembly procedures in the reverse order.
3.1 Precautions Concerning Parts Replacement
3.2 Parts Layout
3.3 Parts Replacement Methods
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Service Manual - OKIPAGE20
Chapter E Multi-Feeder
Page: 159
(1) Parts replacements must be carried out, by first turning the printer power switch off "O" and removing the Multi Feeder from the printer.
(2) Do not disassemble the Multi Feeder if it is operating normally.
(3) Establish the extent of disassembly suitable for the purpose of the procedure, and do not disassemble any more than necessary.
(4) Only specified service tools may be used.
(5) Disassembly must be carried out according to the prescribed procedures. Parts may be damaged if such procedures are not followed.
(6) Small parts such as screws and collars can easily be lost, therefore these parts should be temporarily fixed in the original location.
(7) When handling printed circuit boards, do not use any glove which may generate static electricity.
(8) Do not place the printed circuit boards directly on the equipment or floor.
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Service Manual - OKIPAGE20
Chapter E Multi-Feeder
Page: 160
This section describes the layout of the main components.
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Service Manual - OKIPAGE20
Chapter E Multi-Feeder
Page: 161
This section describes the parts replacement methods for the components listed in the disassembly order diagram below.
Multi Feeder Separator (3.3.1) AOLE-PCB (3.3.2)
Square-shaped connector (3.3.3)
Hopping motor (3.3.4)
Planet gear (3.3.5)
Roller B (3.3.6)
Roller A (3.3.7)
Mini pitch belt & Feed roller (3.3.8)
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Service Manual - OKIPAGE20
Chapter E Multi-Feeder
Page: 162
(1) Turn the printer power off and remove the Multi Feeder.
(2) Disengage the link and hopper cover.
(3) Remove two screws (1), disengage two locks of the upper cover (2) using a flat-head screwdriver, and remove the upper cover (2).
(4) Remove two pan-head screws (3) and remove the cover frame (4).
(5) Disengage the plate and the frame. (Refer to 3.3.6.)
(6) Remove two screws (5) and remove the separator assy (6).
(7) Lift the paper stay (7) and disengage it from the separator bracket (8), then remove the separator 9.
The spring (10) comes off at the same time, so be careful not to lose it.
When the secondary stage of idle gear (11) is turned in the A direction after engaging the plate and the frame, the inclination of the pressure roller (12) is less than ±0.1 mm against the plate (13), as shown in the right figure. When the inclination of the pressure roller exceeds ±0.1 mm, fine-adjust it by pressing with fingers, as shown in the left figure, with the pressure spring (roller) installed.
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Service Manual - OKIPAGE20
Chapter E Multi-Feeder
Page: 163
(1) Remove the upper cover (see 3.1.1 (1) to (3)).
(2) Remove two screws (1) and remove the AOLE-PCB (2).
(3) Remove the connector (3).
(4) Remove the connector (4).
Caution: Be careful to set the sensor plate properly when mounting AOLE-PCB.
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Service Manual - OKIPAGE20
Chapter E Multi-Feeder
Page: 164
(1) Remove the upper cover and remove the cover frame (5) (see 3.3.1 (1) to (4)).
(2) Remove the AOLE-PCB (see 3.3.2).
(3) Remove the screw (1) and remove the square-shaped connector (2).
(4) Using the connector remover, remove the nylon cord (3) from the square-shaped connector (2).
[Confirmation after assembly]
1. The square connector (2) should be horizontal to the cover frame (5).
2. The square connector (2) should be hooked on the connector spring (4) and move smoothly.
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Service Manual - OKIPAGE20
Chapter E Multi-Feeder
Page: 165
(1) Remove the upper cover (see 3.3.1 (1) to (3)).
(2) Remove the AOLE-PCB. (see 3.3.2)
(3) Remove two screws (1), then remove the hopping motor (2).
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Service Manual - OKIPAGE20
Chapter E Multi-Feeder
Page: 166
(1) Remove the upper cover (see 3.3.1 (1) to (3)).
(2) Remove the AOLE-PCB (see 3.3.2).
(3) Remove two screws (1), then remove the motor bracket assy (2) and the planet gear (3).
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Service Manual - OKIPAGE20
Chapter E Multi-Feeder
Page: 167
(1) Remove the upper cover (see 3.3.1 (1) to (3)).
(2) Disengage the plate and frame (on both sides).
(3) Remove the separator assy (see 3.3.1 (4) to (5)).
(4) Remove the AOLE-PCB (see 3.3.2).
(5) Remove the motor bracket assy (see 3.3.5).
(6) Remove the gear (1).
(7) Shift the roller B (2) to the right, lift it by holding on its left side, and pull it out to the left side. The bearing (3) also comes off at the same time, so be careful not to lose it. Further, pay special attention to make sure that you do not damage the sensor lever (4) while going through this procedure.
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Service Manual - OKIPAGE20
Chapter E Multi-Feeder
Page: 168
(1) Remove the motor bracket assy (see 3.3.5).
(2) Remove two gears (1) and then another gear (2).
(3) Disengage the plate (3) and the frame (4).
(4) Remove four screws (5) and remove the frame (4) (see 3.3.6).
(5) Move the belt to the right and remove it from the one-way pulley (6).
(6) Move the carrier roller assembly to the right, and remove it from the shaft (7).
(7) Move the roller A (8) to the right, lift its left side, and then pull it off to the left. (Be careful not to lose the shaft (7) being removed together.
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Service Manual - OKIPAGE20
Chapter E Multi-Feeder
Page: 169
(1) Remove the roller A (see 3.3.7).
(2) Remove the bearing (1) and remove the feed roller assy (2).
(3) Remove two bearings (3) and remove the plate (4).
(4) Remove the mini pitch belt (5) and the feed roller (6).
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Service Manual - OKIPAGE20
Chapter E Multi-Feeder
Page: 170
Precautions Prior to the Troubleshooting
Preparations for the Troubleshooting
Troubleshooting Method
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Chapter E Multi-Feeder
Page: 171
(1) Go through the basic checking items provided in the Operator Guide.
(2) Obtain detailed information concerning the problem from the user.
(3) Go through the checking in the conditions similar to that in which the problem occurred.
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Chapter E Multi-Feeder
Page: 172
(1) Display on the operator panel
The status of the problem is displayed on the LCD (Liquid Crystal Display) on the operator panel. Go through the appropriate troubleshooting procedures according to the messages displayed on the LCD.
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Chapter E Multi-Feeder
Page: 173
When a problem occurs, go through the troubleshooting according to the following procedure.
4.3.1 LCD Status Message List
4.3.2 Troubleshooting Flow
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Chapter E Multi-Feeder
Page: 174
The listing of the statuses and problems displayed in the form of messages on the LCD is provided in
Table 4-1.
Classification
Jam Error
Paper size error
Tray paper out
LCD Status Message Description
Notifies of occurrence of jam while the paper is being fed from the
Multi-Feeder.
Recover Method
- Check the paper in the
Multi-Feeder. Carry out the recover printing by opening the cover, removing jammed paper and closing the cover, and then turning the error display off.
- When the problem occurs frequently, go through the
Troubleshooting.
Notifies of incorrect size paper feeding from the
Multi-Feeder.
- Check the paper in the
Multi-Feeder. Also check to see if there was a feeding of multiple sheets. Carry out the recovery printing by opening the cover, and then turning the error display off.
Notifies of no paper state of the Multi-Feeder.
- Load the paper in the
Multi-Feeder.
Interface Timeout mmmmmmmm:
Paper size in the tray being selected
Notifies of occurrence of interface timeout between the printer and the Multi-Feeder.
- Verify connection of
AOLE-PCB and square-shaped connector.
Replace the square-shaped connector if necessary.
- Replace AOLE-PCB.
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( JAM error )
Paper Input Jam
Service Manual - OKIPAGE20
Chapter E Multi-Feeder
Page: 175
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Service Manual - OKIPAGE20
Chapter E Multi-Feeder
Page: 176
5.1 Interconnection Diagram
5.2 PCB Layout
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Chapter E Multi-Feeder
Page: 177
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Chapter E Multi-Feeder
Page: 178
AOLE-PCB
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Service Manual - OKIPAGE20
Chapter E Multi-Feeder
Page: 179
@ SCAN
No. Part No.
Name
Table 6-1 Multi-Feeder
Qty Recommended
Qty
1
50
1
100
3
1000
6 1 4PP4083-5544
G001
2 3PB4083-5514
P0011
3 4PP4083-5520
P001
4 4PB4083-6075
P001
Separator
Roller-A
Planet gear
Hopping motor
5 3PB4083-5524
P001
6 4PB4043-4614
P001
Roller - C
One-way pulley
7 4LP-1313-338 Mini pitch belt
8 4PB4043-4743 Roller - B
P001
9 4YA4046-1647
G011
AOLE-PCB
10 2201000P0141 Connector (IMSA-9714N-14B)
Nylon connector cord 11 4YS4011-4448
P004
12 4PP4083-2394
P001
Stirrer roller gear
1
1
1
1
1
1
1
1
1
1
3
1
1
1
1
1
1
1
1
0
0
3
3
3
3
3
3
3
3
3
3
3
9
6
6
6
6
6
6
6
6
6
6
18
Remarks
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