Canon FY8-23AV-000 Photo Scanner User Manual

SERVICE
HANDBOOK
REVISION 0
JAN.1998
COPYRIGHT © 1998 CANON INC.
FY8-23AV-000
CANON PC400/420/430,FC200/220 REV.0 JAN.1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
IMPORTANT
THIS DOCUMENTATION IS PUBLISHED BY CANON INC., JAPAN, TO SERVE AS A
SOURCE OF REFERENCE FOR WORK IN THE FIELD.
SPECIFICATIONS AND OTHER INFORMATION CONTAINED HEREIN MAY VARY
SLIGHTLY FROM ACTUAL MACHINE VALUES OR THOSE FOUND IN ADVERTISING AND
OTHER PRINTED MATTER.
ANY QUESTIONS REGARDING INFORMATION CONTAINED HEREIN SHOULD BE
DIRECTED TO THE COPIER SERVICE DEPARTMENT OF THE SALES COMPANY.
THIS DOCUMENTATION IS INTENDED FOR ALL SALES AREAS, AND MAY CONTAIN
INFORMATION NOT APPLICABLE TO CERTAIN AREAS.
COPYRIGHT © 1998 CANON INC.
Printed in Japan
Imprimé au Japon
Use of this manual should be strictly
supervised to avoid disclosure of
confidential information.
Prepared by
OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DEPARTMENT 1
OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DIVISION
CANON INC.
5-1, Hakusan 7-chome, Toride-shi, Ibaraki 302 Japan
COPYRIGHT © 1998 CANON INC.
CANON PC400/420/430,FC200/220 REV.0 JAN.1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
1
CONTENTS
2
CHAPTER 1 MAINTENANCE AND INSPECTION
A.
B.
C.
D.
Periodically Replaced Parts .........1-1
Durables.......................................1-1
Periodical Servicing .....................1-1
Notes on Cartridge.......................1-2
1. Storing Sealed Cartridges.......1-2
2.
Storing and Handling Unsealed
Cartridges ...............................1-3
E. Image Adjustment Basic Procedure
.....................................................1-5
F. Points to Note ..............................1-6
3
CHAPTER 2 STANDARDS AND ADJUSTMENTS
A. Mechanical...................................2-1
1. Image Leading Edge Non-Image
Width (position of white paint on
back of glass)..........................2-1
2. Image Leading Edge Margin
(point of detection for registration)
................................................2-1
B. Electrical ......................................2-2
1. Adjusting the Intensity (VR604)
................................................2-2
2. Adjusting the AE Mechanism
(VR602, VR603) .....................2-4
4
5
CHAPTER 3 IMAGE TROUBLESHOOTING
A. Making Initial Checks ...................3-1
1. Site Environment ....................3-1
2. Checking the Documents........3-1
3. Checking the Copyboard Cover
and Copyboard Glass for Dirt
and Scratches.........................3-2
4. Checking the Lens Array for Dirt
................................................3-2
5. Checking the Transfer Charging
Roller ......................................3-2
6. Checking the Feeding Assembly
................................................3-2
7. Checking the Copy Paper.......3-2
8. Checking the Durables ...........3-2
9. Others .....................................3-4
B. Samples of Image Faults .............3-6
C. Troubleshooting by Image Fault
.....................................................3-7
1. The copy is too light (halftone
areas only). .............................3-7
2. The copy is too light (dark areas
as well)....................................3-7
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
The copy is too light (extremely
light overall). ...........................3-7
The copy has uneven density
(darker at front). ......................3-8
The copy has uneven density
(lighter at front). ......................3-8
The copy is foggy (overall)......3-8
The copy is foggy (paper feed
direction). ................................3-9
The copy has dark lines (paper
feed direction, relatively narrow).
................................................3-9
The copy has dark lines (paper
feed direction, thin). ................3-9
The copy has white spots (paper
feed direction). ........................3-9
The copy has white lines (paper
feed direction). ........................3-9
The copy has white spots (cross
feed direction). ......................3-10
The back of the copy is soiled.
..............................................3-10
i
6
7
14. The copy has faulty fixing......3-11
15. The copy has faulty leading
edge registration (blank area
much too wide)......................3-11
16. The copy has faulty leading
edge registration (blank area too
wide)......................................3-11
17. The copy has faulty leading
edge registration (no blank area)
..............................................3-11
18. The copy has a blurred image.
..............................................3-12
19. The copy is foggy (cross feed
direction). ..............................3-12
20. The copy has poor sharpness
(focus)...................................3-12
21. The copy is blank..................3-13
22. The copy is solid black..........3-13
CHAPTER 4 TROUBLESHOOTING MALFUNCTIONS
A. Troubleshooting Malfunctions ......4-1
1.
(self diagnosis;PC400/FC200)
......................................4-1
2. E0 ...........................................4-1
3. E2 ...........................................4-2
4. E6 ...........................................4-2
5. E9 ...........................................4-3
6. AC power is absent.................4-3
7. Pick-up fails. ...........................4-4
8. The scanning lamp fails to go
ON. .........................................4-4
9.
10.
11.
12.
13.
The main motor fails to rotate.
................................................4-5
The copyboard fails to move.
................................................4-5
(paper feeding normally) ....4-6
(at time of jam) ...................4-6
The fixing heater fails to operate
................................................4-6
CHAPTER 5 TROUBLESHOOTING PAPER FEED PROBLEMS
A. Copy Paper Jams ........................5-1
1. Pick-Up Assembly...................5-2
2. Separation/Feeding Assembly
................................................5-2
3. Fixing/Delivery Assembly
................................................5-3
B. Feeding Faults .............................5-4
1. Double Feeding ......................5-4
2. Wrinkles ..................................5-4
CHAPTER 6 ARRANGEMENT AND FUNCTIONS OF ELECTRICAL PARTS
A. Sensors and Solenoids ................6-1
B. Switches.......................................6-2
C. Lamp, Heater, Motor, and Others
.....................................................6-3
D. Printed Circuit Board (PCB) .........6-4
ii
COPYRIGHT © 1998 CANON INC.
E. Variable Resistors (VR) and Check
Pins by PCB.................................6-5
1. DC Controller/DC Power Supply
PCB ........................................6-5
2. Control Panel PCB..................6-6
CANON PC400/420/430,FC200/220 REV.0 JAN.1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 7 SELF DIAGNOSIS
Self Diagnosis.....................................7-1
APPENDIX
A. General Timing Chart ...................A-1
B. Signals/Abbreviations List ............A-3
1. Signals....................................A-3
2. Abbreviations..........................A-4
COPYRIGHT © 1998 CANON INC.
C.
D.
E.
F.
General Circuit Diagram...............A-5
Special Tools Table.......................A-7
Solvents/Oils Table.......................A-8
Specifications ...............................A-9
CANON PC400/420/430,FC200/220 REV.0 JAN.1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
iii
iv
COPYRIGHT © 1998 CANON INC.
CANON PC400/420/430,FC200/220 REV.0 JAN.1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 1 MAINTENANCE AND INSPECTION
CHAPTER 1 MAINTENANCE AND INSPECTION
A. Periodically Replaced Parts
The machine does not have parts which must be replaced on a periodical basis.
B. Durables
The machine does not have parts which are classified as durables.
C. Periodical Servicing
The machine does not have parts that require periodical servicing.
1-1
1
CHAPTER 1 MAINTENANCE AND INSPECTION
D. Notes on Cartridge
The cartridge is affected by the environment, regardless of whether it is sealed or
unsealed and installed in the machine or otherwise. Although the properties of the
cartridge change over time independent of how many copies have been made, the
degree of care taken for the cartridge affects how long it may remain stable.
1. Storing Sealed Cartridges
When storing the cartridge in a warehouse or workshop, make sure the place is
controlled to the specifications shown in Table 1-1D.
Avoid direct rays of the sun.
Avoid areas subjected to appreciable vibration.
Do not drop or subject it to impact.
Temperature
a.
b.
c.
Normal
(9/10 of period)
Severe (1/10
of period)
0° to 35°C/
32° to 95°F
High 35° to 40°C/
95° to 104°F
Low -20° to 0°C/
-4° to 32°F
Humidity
Temperature fluctuations
(within about 3 min)
Normal
(9/10 of period)
Severe (1/10
of period)
40° ➝ 15°C/
104° ➝ 59°F
-20°C ➝ 25°C/
-4°F ➝ 77°F
35 to 85%RH
High 85 to 95%RH
Low 10 to 35%RH
Atmospheric pressure
460 to 760 mmHg
(0.1 to 1 atm)
Table 1-1D Temperature/Humidity Specifications
Temperature
Humidity
-20° to 40°C/-4° to 104°F
90% or less
Table 1-2D Transportation
1-2
CHAPTER 1 MAINTENANCE AND INSPECTION
2. Storing and Handling Unsealed Cartridges
The photosensitive medium is an organic photoconductor (OPC), which is extremely
susceptible to light. Since the cartridge also contains toner, you must be extra careful
when storing or handling the cartridge. Make sure the user is aware of this fact and will
handle the cartridge with care.
a. Storing Unsealed Cartridges
1) Avoid areas subjected to strong rays of the sun. Do not keep it in a car even in a
protective box; the inside may become extremely hot.
2) Avoid areas of high or low temperature/ humidity and areas where these elements
tend to change rapidly (for example, near air conditioners or heaters).
3) Avoid areas where dust, ammonium gas, or gases from organic solvents tend to
accumulate.
4) Keep the cartridge in a place 40°C or less.
b. Handling the Cartridge
1) Before inserting the cartridge in the copier or if the toner starts to run short, hold the
cartridge horizontally as shown in Figure 1-1, and rotate it in both directions about
90° to even out the toner inside it. Do not shake the cartridge or hold it in a different
way; otherwise, toner may leak out the cartridge.
Figure 1-1D
1-3
CHAPTER 1 MAINTENANCE AND INSPECTION
2) Do not place the cartridge upright or upside down; do not shake it.
Figure 1-2D
3) Do not force open the shutter for the photosensitive drum cover found at the bottom
of the cartridge; do not touch the surface of the photosensitive drum.
If the surface of the photosensitive drum has become soiled, wipe it using a flannel
cloth coated with toner. Do not dry wipe it or use solvent.
4) Do not disassemble the cartridge.
5) Do not subject the cartridge to vibration or impact; in particular, do not force down
the photosensitive drum from above the shutter for the drum cover.
6) Keep the cartridge out of reach of children.
7) The photosensitive drum is susceptible to light and, therefore, equipped with a lightblocking shutter; nevertheless, exposure to light for a long time can affect the drum,
resulting in copies with white spots or vertical lines. Leave the copier alone for
some time for possible recovery; to avoid residual memory, which results in white
spots or vertical lines, however, keep the following in mind.
Caution:
Work quickly when removing jams or replacing cartridges.
When the cartridge must be removed for work, be sure to put the cartridge in its
storage box or cover it; do not leave it without protective measures once it is
outside the copier.
Reference:
The drum would recover to more or less its normal condition if left alone for five
minutes in a dark place after exposure to an intensity of 1500 lux (about 5 minutes
under general lighting). However, you must try to avoid any exposure. (The rays
of the sun have intensities ranging between about 10000 and 30000 lux.)
1-4
E. Image Adjustment Basic Procedure
<Pre-Checks>
<Optimum Density Adjustment>
Clean the parts.
Scanning system, pick-up/feeding
system, and delivery assembly.
NO
Set the switch to the
middle.
Is the
setting of the density
correction switch at the
middle?
YES
Is gray
scale No. 9 barely noted?
(See Note 2.)
YES
End.
NO
Is the
problem corrected by
the density correction
switch?
YES
NO
Select non-AE, and set the density control dial/lever
to 5.5; then, make two to three copies of the Test
Chart (NB-3, NA-2, NA-3); see Note 1.
Is
optimum
density obtained by
adjusting the intensity of
light?
(See
YES
End.
NO
Check the following:
1. Density of gray scale No. 9; see Note 2.
2. Difference in density between front and rear; see
Note 3.
3. Density of gray scale No. 1; see Note 3.
4. Fogging in white area; see Note 3.
Check the following:
1. Cartridge.
2. Scanning lamp unit.
3. DC controller/DC power supply PCB
(see “Troubleshooting by Image
Fault”).
Notes:
1. If a mono color cartridge is used, set the
density control dial to 4.5.
2. If NB3 is used, refer to gray scale No. 10.
3. The machine is not equipped with an
adjustment function for each type of image
fault; see “Troubleshooting by Image Fault.”
4. For instructions on how to adjust the
intensity of light, see p. 2-2.
1-5
F. Points to Note
Copyboard
Optical assembly
Parts
Lens array
Tools/Solve
Remarks
Cotton wad Do not use the wire
cleaner meant for
conventional
machines.
Scanning lamp Blower
brush
Parts
Tools/Solve
Copyboard
cover
alcohol
Copyboard
glass
alcohol
White
reflecting strip
alcohol
Electrical
Parts
Intensity/AE
sensor
Cartridge, Transfer charging roller
Parts
Tools/Solve
Photosensitive Toner
drum
Drum cover
shutter
Tools/Solve
Blower
brush
Remarks
Dirt can soil the
leading edge
margin, causing
jams.
Remarks
Cleaning
Remarks
As a rule, do not
clean.
Do not use solvents.
Do not touch the
drum. Avoid light.
Well-wrung Be sure to clean the
moist cloth shutter; particles of
toner can cause
soiled copies.
Transfer
Lint-free
charging roller paper
Cleaning
Do not use water or
solvent. Take care
not to touch the
roller or leave oil.
Fixing assembly
Parts
Inlet guide
Tools/Solve
Remarks
Solvent
Pick-up roller assembly
Parts
Pick-up roller
Tools/Solve
Remarks
Well-wrung Cleaning
moist cloth;
or, alcohol
Registration assembly
Parts
Registration
roller
1-6
Tools/Solve
Remarks
Well-wrung Cleaning
moist cloth
CHAPTER 2 STANDARDS AND ADJUSTMENTS
CHAPTER 2 STANDARDS AND ADJUSTMENTS
A. Mechanical
1. Image Leading Edge Non-Image Width (position of white paint on back of
glass)
The leading edge non-image width must be 2.0 ±1.0 mm when the Test Sheet is
copied.
2.0 ± 1.0 [mm]
Figure 2-1A
The leading edge non-image width is determined by the position of the white paint
found behind the copyboard glass.
Size index
Copyboard glass
2mm
White paint
Figure 2-2A
2. Image Leading Edge Margin (point of detection for registration)
The leading edge margin must be 0.2 to 5.0 mm when the Test Sheet is copied.
To adjust, move the position of the registration cam.
0.2 to 5.0 [mm]
Figure 2-3A
2-1
2
CHAPTER 2 STANDARDS AND ADJUSTMENTS
B. Electrical
Notes:
If you have replaced the scanning lamp unit, intensity sensor, AE sensor, or control
panel PCB, you must adjust the three variable resistors on the control panel PCB
(one, if PC400/FC200); you must, however, adjust them in the order of VR604,
VR602, and VR603 (from intensity to AE).
1. Adjusting the Intensity (VR604)
a. After Replacing the Control Panel PCB Only
1) Disconnect the power plug, and detach the faulty control panel PCB.
2) Set the meter to the ‘200 k ’ range, and measure C between the terminal of VR604
and the terminal of R614 on the detached control panel PCB; see Figure 2-1B.
3) Likewise, measure C between the terminal of VR604 and the terminal of R614 on
the new control PCB; then, turn VR604 so that the reading is the same as the
measurement taken in step 2).
4) In the case of the PC420/430/FC220, adjust VR602 (A between terminals of VR602
and JP607) and VR603 (Between terminals of VR603 and JP621); see Figure 2-1B.
5) Attach the new control panel PCB to the copier.
B (VR603)
A (VR602)
C (VR604) Control panel PCB
C (R614)
B (JP621)
A (JP607)
Figure 2-1B (PC420/430/FC220)
2-2
CHAPTER 2 STANDARDS AND ADJUSTMENTS
C (VR604)
Control panel PCB
b.
C (R614)
Figure 2-2B (PC400/FC200)
After Replacing the Scanning Lamp Unit, Intensity Sensor, or AE Sensor
(Before Adjustment)
• If the scanning lamp has blackened, replace it.
• Clean the scanning system (lens array, lamp reflector, lamp).
1)
2)
3)
4)
5)
Set the cartridge to the copier.
De-select AE, and set the copy density control lever/dial to the center.
Set the density correction switch (SW606) to the center (PC420/430/FC220).
Set the Test Sheet (NA3/NB3/NA2), and make a copy.
Check if the copy is free of fogging, and gray scale No. 9 (No. 10, if NB3) is
somewhat visible.
• If too dark,
Turn VR604 on the control panel PCB clockwise slightly to increase the intensity.
• If too light,
Turn VR604 counterclockwise slightly to decrease the intensity.
6) Repeat steps 4) and 5) until the density is optimum.
Notes:
After adjusting the intensity, be sure to adjust the AE mechanism
(PC420/430/FC220).
2-3
CHAPTER 2 STANDARDS AND ADJUSTMENTS
2. Adjusting the AE Mechanism (VR602, VR603)
(Before Adjustment)
• Obtain a newspaper whose text consists of fine print; do not use a section with
photos or large characters.
• Make sure you have adjusted light intensity.
1)
2)
3)
4)
Switch the copier OFF.
Detach the control panel cover.
Turn VR602 and VR603 on the control panel PCB fully clockwise.
Place a newspaper over the AE light-receiving section of the copyboard, and close
the copyboard cover.
AE light-receiving section
Figure 2-3B
5) Short the three jumper wires (JP604, JP605, JP607) on the control panel PCB at the
same time using a screwdriver.
Caution:
Take adequate care not to short wires other than those specified.
2-4
CHAPTER 2 STANDARDS AND ADJUSTMENTS
JP607
JP605
Control panel PCB
JP604
Screwdriver
Figure 2-4B
6) While keeping the condition in step 5), switch the copier ON.
• ‘0’ is displayed, the scanning lamp goes ON, and the main motor starts to rotate.
7) Stop shorting the jumper wires.
8) Set the digital multimeter to the 20V DC range, and turn VR602 (AE offset
adjustment) until the voltage between the anode side of the diode (D606; +) and
JP607 (GND) is 4.0 ±0.1 V.
Notes:
You must use a Digital Multimeter when making adjustments in steps 8) and 10).
VR602
JP607
VR603
D606 (anode side)
Control panel PCB
Figure 2-5B
2-5
CHAPTER 2 STANDARDS AND ADJUSTMENTS
9) Place about five sheets of blank copy paper.
10) Turn VR603 (AE gain adjustment) until the voltage between the anode side of the
diode (D606; it) and JP607 (GND) is 1.8 ±0.1 V; see Figure 2-5B.
11) Switch the copier OFF.
Notes:
Make sure that the jumping wires are no longer shorted.
12) Switch the copier ON once again.
13) Set the density correction switch (SW606) to the center (of the three settings).
14) Make sure that the AE indicator is ON.
15) Set the newspaper used in step 4) on the copyboard once again; this time, move the
newspaper to a different area.
16) Make a copy, and make sure that it is not foggy and has adequate text density.
• If foggy,
Turn VR602 clockwise slightly.
• If text density is low,
Turn VR602 counterclockwise slightly.
17) Repeat steps 15) and 16) until the density is optimum.
2-6
CHAPTER 3 IMAGE TROUBLESHOOTING
CHAPTER 3 IMAGE TROUBLESHOOTING
A. Making Initial Checks
1. Site Environment
a. The voltage of the power source must be within the specifications.
b. Avoid areas subjected to dust or high temperature/humidity (near water faucets,
water boilers, humidifiers) and areas near open fires.
c. Avoid areas subjected to ammonium gas.
d. Avoid direct rays of the sun; otherwise, provide curtains.
e. Make sure the site is well ventilated.
f. Make sure the floor is level.
Check the site to see if it meets the above requirements.
2. Checking the Documents
You must first check to see if a particular problem may not be due to the document
used.
a. The copy density reading should be 5.5 ±1.5 (black)/4.5 ±1.5 (color).
b. Some backgrounds, i.e., yellow shades, tend to produce copies with poor
contrast.
c. Diazo copies or translucent documents tend to produce copies that may be
mistaken for foggy copies.
d. Documents prepared in light pencil tend to produce copies that may be mistaken
for light copies.
3-1
3
CHAPTER 3 IMAGE TROUBLESHOOTING
3. Checking the Copyboard Cover and Copyboard Glass for Dirt and Scratches
If dirt is found, clean it using mild detergent or alcohol; if scratches are found,
replace it.
4. Checking the Lens Array for Dirt
Check the lens array for dirt. If found, clean it using a cotton wad.
5. Checking the Transfer Charging Roller
Check the transfer charging roller for scratches or other abnormalities.
6. Checking the Feeding Assembly
Check the feeding assembly for dirt. If dirt is found, clean it with a moist cloth.
7. Checking the Copy Paper
a. Check to see if paper of a type recommended by Canon is used.
b. Check to make sure that the paper is not moist. Try paper fresh out of package.
8. Checking the Durables
Checking the Cartridge
White spots or vertical white lines tend to appear when the cartridge starts to run
short of toner; see Figure 10-301A.
Figure 3-1A
3-2
CHAPTER 3 IMAGE TROUBLESHOOTING
Go over the following when this is noted.
1) Take out the cartridge from the copier, and rotate it several times.
Figure 3-2A
2) Set the cartridge back into the copier, and make copies.
a. If the copies are normal,
• The user may use the cartridge for some time more; however, advise the user to
procure a replacement cartridge.
b. If the copies fail to return to normal,
• Replace the cartridge as described in “Replacing the Cartridge.”
3-3
CHAPTER 3 IMAGE TROUBLESHOOTING
9. Others
In winter, moving a machine from a cold storage room to a warm site can cause
condensation inside the machine, leading to various problems.
a. Condensation on the scanning system (glass, lens array, reflecting plate) causes
dark images.
b. When too cold, the photosensitive drum assumes a high electrical resistance,
resulting in poor contrast.
c. Condensation in the pick-up/feeding assembly can cause faulty paper transport.
d. Condensation in the lower roller of the manual pick-up mechanism decreases
friction, leading to pick-up failure.
e. Condensation on the copyboard hinders its smooth movement.
When condensation is noted, dry wipe the parts.
The same holds true of the cartridge. After having moved the cartridge from a cold
to warm room, leave it alone for about one to two hours before unpacking it.
3-4
CHAPTER 3 IMAGE TROUBLESHOOTING
3-5
CHAPTER 3 IMAGE TROUBLESHOOTING
B. Samples of Image Faults
not available
3-6
CHAPTER 3 IMAGE TROUBLESHOOTING
C. Troubleshooting by Image Fault
1. The copy is too light (halftone areas only).
2. The copy is too light (dark areas as well).
3. The copy is too light (extremely light overall).
Step
Lens, Reflecting plate,
Intensity sensor
1
Clean the lens, reflecting plate,
and intensity sensor.
Is the problem corrected?
YES
End.
2
Press the Copy Start key, and
switch the copier OFF in the
middle of operation; then, open
the top cover.
Is the toner image on the photosensitive drum more or less
normal before transfer?
Be sure to check quickly to
protect the drum against light.
NO
Go to step 5.
Transfer charging
roller
3
Is the transfer charging roller
normal?
NO
1. Re-attach the charging
roller.
2. Replace the charging
roller.
Copy paper
4
Try paper fresh out of package.
Is the copy density higher?
YES
1. The paper may be
moist; advise the user
on the correct method
of storage.
2. Advise the user that the
use of non-recommended paper may not
bring about the best
results.
5
Replace the cartridge.
Is the problem corrected?
YES
End.
NO
Replace the DC controller/
DC power supply PCB.
Transfer
Cause
Cartridge
DC controller/DC
power supply PCB
Checks
YES/NO
Remedies
3-7
CHAPTER 3 IMAGE TROUBLESHOOTING
4. The copy has uneven density (darker at front).
5. The copy has uneven density (lighter at front).
Cause
Step
Checks
YES/NO
Remedies
Scanner
1
Clean the scanning lamp,
reflecting plate, and lens.
Is the problem corrected?
YES
End.
Cartridge, Scanning
lamp
2
Press the Copy Start key, and
switch the copier OFF in the
middle of operation; then, open
the top cover.
Does the toner image on the
photosensitive drum before
transfer have uneven density?
YES
1. Replace the cartridge.
2. Replace the scanning
lamp unit.
NO
Check the transfer charging roller.
Transfer charging roller
6. The copy is foggy (overall).
Cause
Step
Checks
YES/NO
Remedies
Scanner
1
Clean the scanning lamp,
reflecting plate, and lens.
Is the problem corrected?
YES
End.
Scanning lamp,
Developing bias
2
Is continuity present between
photosensitive drum PCB and
grounding spring?
YES
1. Check if the scanning
lamp goes ON normally.
2. Check the developing
bias.
NO
Check to make sure if the
grounding spring is properly attached in front of the
cartridge.
Grounding spring
3-8
CHAPTER 3 IMAGE TROUBLESHOOTING
7. The copy is foggy (paper feed direction).
8. The copy has dark lines (paper feed direction, relatively narrow).
9. The copy has dark lines (paper feed direction, thin).
Cause
Step
Checks
YES/NO
Remedies
Scanner
1
Clean the scanning lamp,
reflecting plate, and lens.
Is the problem corrected?
YES
End.
Cartridge
2
Take out the cartridge, and put it
back in.
Is the problem corrected?
YES
End.
NO
Replace the cartridge.
10. The copy has white spots (paper feed direction).
11. The copy has white lines (paper feed direction).
Cause
Step
Checks
YES/NO
Remedies
Fixing assembly
1
Press the Copy Start key, and
switch the copier OFF in the
middle of operation; then, open
the top cover.
Does the copy image have white
spots or white lines before
fixing?
NO
Check the fixing assembly.
Cartridge
2
Rotate the cartridge several
times.
Is the problem corrected?
YES
Advise the user that the
cartridge is running short
of toner.
Transfer charging roller
3
Is there foreign matter or
scratches on the transfer
charging roller?
YES
Remove the foreign
matter, or replace the
transfer charging roller.
NO
Replace the cartridge.
Cartridge
3-9
CHAPTER 3 IMAGE TROUBLESHOOTING
12. The copy has white spots (cross feed direction).
Cause
Copy paper
Copyboard rail
Step
Checks
YES/NO
Remedies
1
Is the copy paper of a type recommended by Canon?
NO
Try recommended paper;
if the results are good,
advise the user to use
recommended paper.
2
Try copy paper fresh out of
package.
Is the problem corrected?
YES
The copy paper may be
moist; advise the user to
store it wrapped.
3
Is the problem noted at the same
position on all copies?
YES
Check the copyboard rail
for foreign matter.
NO
Check the scanning lamp
for flickering, and check
the presence/absence of a
developing bias.
YES/NO
Remedies
Scanning lamp,
Developing bias
13. The back of the copy is soiled.
Cause
Step
Checks
1
Press the Copy Start key, and
switch the copier OFF while the
copy paper is moving through
the feeding assembly.
Is the back of the copy soiled?
NO
Go to step 3.
Transfer charging
assembly
2
Is the transfer charging assembly soiled?
YES
1. Clean the transfer
charging assembly.
2. Clean the registration
roller.
3. Clean the pick-up guide
plate.
4. Check the cartridge for
leakage of toner.
Feeding assembly
3
Is the feeding assembly soiled?
YES
Clean the feeding
assembly.
NO
Clean the delivery roller.
Delivery roller
3-10
CHAPTER 3 IMAGE TROUBLESHOOTING
14. The copy has faulty fixing.
Cause
Step
Checks
YES/NO
Remedies
Copy paper
1
Is the copy paper of a type recommended by Canon?
NO
Try paper of a recommended type; if the
results are good, advise
the user to use recommended paper.
Fixing film
2
Is the faulty fixing vertical and in
the form of lines?
YES
Check the fixing film and
pressure roller for
scratches. If scratches
are found, replace the
fixing unit or roller.
DC controller/DC
power supply PCB
3
Is the heater turned ON for
control after copy operation is
started?
YES
The control temperature
for the fixing heater may
be low; check the thermistor and DC controller/
DC power supply PCB.
NO
See “The fixing heater fails
to operate.”
Fixing heater
15. The copy has faulty leading edge registration (blank area much too wide).
16. The copy has faulty leading edge registration (blank area too wide).
17. The copy has faulty leading edge registration (no blank area).
Cause
Step
Checks
YES/NO
Registration cam
1
Move the registration cam on the
copyboard left and right.
Is there any change to the registration?
YES
Adjust the position of the
registration cam.
Solenoid (SL1),
DC controller/DC
power supply PCB
2
Is the solenoid for registration
(SL1) operating normally?
NO
1. Check the solenoid
(SL1).
2. Check the DC controller/DC power supply
PCB.
Pick-up roller
3
Is the copy paper of a type
recommended by Canon?
YES
Check the pick-up roller.
NO
Try copy paper of a type
recommended by Canon;
if the results are good,
advise the user to use
recommended paper.
Copy paper
Remedies
3-11
CHAPTER 3 IMAGE TROUBLESHOOTING
18. The copy has a blurred image.
Cause
Step
Checks
YES/NO
Remedies
Copyboard rail
1
Is the movement of the copyboard rail smooth?
NO
Replace the copyboard
rail.
Copyboard drive
assembly
2
Is the movement of the copyboard normal?
NO
Check the copyboard drive
assembly; if a fault is
found, replace the part.
Main motor assembly
3
Is the main motor assembly
normal?
NO
Replace the main motor
assembly.
Feeding assembly
4
Does the copy paper stop or
jump near the transfer assembly?
YES
Remove the foreign matter
or burrs from the feeding
system.
NO
Replace the cartridge.
Cartridge
19. The copy is foggy (cross feed direction).
Cause
Step
Checks
YES/NO
Scanning lamp
1
Does the scanning lamp flicker?
YES
Replace the scanning
lamp unit.
Cartridge
2
Replace the cartridge.
Is the problem corrected?
YES
End.
NO
Check the high-voltage
transformer (DC controller/
DC power supply PCB).
YES/NO
Remedies
High-voltage
transformer
Remedies
20. The copy has poor sharpness (focus).
Cause
Step
Checks
1
Does the copy have an image
which is too light at the same
time?
YES
Correct the light image
first.
Document
2
Is there a gap between the
document and the copyboard
glass?
YES
• Check the copyboard
glass to make sure it is
not warped.
• Advise the user how to
place documents correctly.
Lens
3
Is the lens off contact?
YES
Push the lens into place
while taking great care not
to scratch it.
Scanner
4
Clean the scanning lamp,
reflecting plate, and lens.
Is the problem corrected?
YES
End.
NO
Replace the cartridge.
Cartridge
3-12
CHAPTER 3 IMAGE TROUBLESHOOTING
21. The copy is blank.
Cause
Step
Checks
YES/NO
1
Is the cartridge set in the copier?
NO
Set the cartridge in the
copier.
2
Does the cartridge have toner?
NO
Replace the cartridge.
3
Has the seal been removed from
the cartridge?
NO
Remove the seal.
4
Set the cartridge in the copier,
and close the copier.
Does the drum cover shutter
open without fail?
NO
Make adjustments so that
the shutter opens
smoothly.
Drum drive assembly
5
Is the drum drive gear rotating
normally?
NO
Check the drum drive
assembly.
High-voltage
transformer
6
Are the primary charging
terminal at the front left of the
cartridge and the high-voltage
terminal at the bottom of the
copier in firm contact?
YES
Check the high-voltage
transformer (DC controller/
DC power supply PCB).
NO
1. Check the contact for
electrical continuity.
2. Try replacing the
cartridge.
Cartridge
Terminals for primary
charging,
Cartridge
Remedies
22. The copy is solid black.
Cause
Step
1
Checks
Is the scanning lamp ON during
copying operation?
YES/NO
Remedies
YES
Check if the cartridge is
set properly.
NO
See “The scanning lamp
fails to go ON.”
3-13
CHAPTER 3 IMAGE TROUBLESHOOTING
3-14
CHAPTER 4 TROUBLESHOOTING MALFUNCTIONS
CHAPTER 4 TROUBLESHOOTING MALFUNCTIONS
A. Troubleshooting Malfunctions
1.
(self diagnosis; PC400/FC200)
Cause
Step
Checks
YES/NO
Remedies
1
Switch the copier ON.
Does the Jam indicator remain
On for about 0.5 sec, and does
the copier go OFF automatically
thereafter?
YES
See ‘E00’.
NO
See the discussions on
‘E2’, ‘E6’, and ‘E9’.
Checks
YES/NO
Remedies
2. E0
Cause
Thermistor (TH1)
DC controller/DC
power supply PCB
Fixing assembly
Step
4
1
Set the meter to the ‘12VDC’
range, and wait until the fixing
heater is sufficiently cool.
Measure the voltage between
J603-1 (+) and J603-2 (-).
Is it about 3.2 V or more?
NO
Check the wiring from the
DC controller/DC power
supply PCB to the thermistor (TH1); if normal,
replace the fixing assembly.
2
Does the fixing heater operate
normally?
NO
See “The fixing heater fails
to operate.”
3
Switch the copier ON, and make
a copy.
Measure the voltage between
J603-1 and J603-2 once again.
Is the voltage lower than that
measured in step 1?
YES
Replace the DC controller/
DC power supply PCB.
NO
Check the wiring from the
DC controller/DC power
supply PCB to the thermistor (TH1); if normal,
replace the fixing assembly.
4-1
CHAPTER 4 TROUBLESHOOTING MALFUNCTIONS
3. E2
Cause
Copyboard
DC controller/DC
power supply PCB
Step
Checks
YES/NO
Remedies
1
Does the copying operation start
with the copyboard at the left or
right?
YES
Check the operation with
the copyboard moved to
the center; advise the user
that this is not the copier’s
problem
2
Does the copyboard move in
reverse? In addition, does it
move in reverse far too slowly?
NO
See “The copyboard fails
to move.”
3
Does the copyboard move in
reverse after copying operation
has started and move forward
after it has reached the copyboard start position?
YES
Replace the DC controller/DC power supply
PCB.
NO
1. Check the copyboard
position sensor (Q902).
2. Try replacing the copyboard drive assembly.
3. Check the start position
cam and reversal cam
in the copyboard glass
assembly.
YES/NO
Remedies
Copyboard drive
assembly,
Copyboard glass
assembly
4. E6
Cause
Control panel PCB
DC controller/DC
power supply PCB
4-2
Step
1
Checks
Replace the control panel PCB.
Is the problem corrected?
YES
End.
NO
Check the harness from
the control panel PCB to
the DC controller/DC
power supply PCB; if
normal, replace/DC power
supply PCB.
CHAPTER 4 TROUBLESHOOTING MALFUNCTIONS
5. E9
Cause
Step
DC controller/
DC power supply PCB
1
Power supply
Checks
Replace the DC controller/DC
power supply PCB.
Is the problem corrected?
YES/NO
Remedies
YES
End.
NO
Advise the user that the
frequency of the power
supply is faulty.
6. AC power is absent.
Cause
Step
Checks
YES/NO
1
Is the power plug connected to
the copier and the power outlet?
NO
Connect the power plug.
2
Is ‘E’ code (PC420/430/FC220)
or ‘JAM’ (PC400/FC200)
indicated for about 0.5 sec after
the power switch is turned ON
and does the power turn OFF
thereafter?
YES
See ‘E0’.
Top cover,
Delivery assembly
cover
3
Are the top cover and delivery
assembly cover closed properly?
NO
Close the top cover and
delivery assembly cover.
Power supply voltage
4
Is the rated voltage present at
the power outlet?
NO
Advise the user that the
problem is not of the
copier.
Door switch
5
Is the door switch (SW1,SW2)
normal?
NO
Replace the door switch.
DC controller/
DC power supply PCB
6
Is the rated power supply voltage
present between J103 and J104
on the DC controller/DC power
supply PCB? (Set the meter to
the 300V AC range).
YES
Replace the DC controller/
DC power supply PCB.
Fixing assembly
7
Replace the fixing assembly.
Is the problem corrected?
(fixing heater error temperature
detection circuit ON)
YES
End.
NO
Replace the DC controller/
DC power supply PCB.
Power plug
Remedies
4-3
CHAPTER 4 TROUBLESHOOTING MALFUNCTIONS
7. Pick-up fails.
Cause
Step
Checks
YES/NO
Remedies
1
Move the copyboard to the left
until it stops, and open the top
cover. Does the pick-up roller
rotate when the door switch is
turned ON and the Copy Start
key is pressed at the correct
pick-up timing?
YES
See “Pick-Up Assembly” in
“Troubleshooting Feeding
Faults.”
Main motor (M1)
2
Is the main motor rotating?
NO
See “The main motor fails
to rotate.”
Pick-up sensor (Q131)
3
Does the copier operate normally when the pick-up sensor
(Q131) is blocked with paper?
YES
Check the sensor lever.
Pick-up solenoid (SL1;
PC420/430/FC220),
Registration solenoid
(SL1; PC400/FC200)
4
Set the meter to the ‘30VDC’
range. Does the voltage
between J201-6 (+) and J201-7
(-) on the DC controller/DC
power supply PCB change to
about 24 V at pick-up timing?
YES
Check the spring clutch in
the registration assembly
and pick-up assembly; if
normal, replace the
solenoid.
NO
Check the wiring from the
solenoid to the DC controller/DC power supply
PCB; if normal, replace
the DC controller/DC
power supply PCB.
YES/NO
Remedies
DC controller/
DC power supply PCB
8. The scanning lamp fails to go ON.
Cause
Step
Checks
Scanning lamp
(LA1-LA8)
1
Is the scanning lamp unit
attached correctly?
NO
Re-attach the lamp unit.
Scanning lamp
(LA1-LA8)
2
Is the scanning lamp black?
YES
Replace the scanning
lamp unit.
DC controller/DC
power supply PCB
3
Is the connector of the scanning
lamp connected firmly?
YES
Replace the DC controller/
DC power supply PCB.
NO
Re-connect the connector.
Connector
4-4
CHAPTER 4 TROUBLESHOOTING MALFUNCTIONS
9. The main motor fails to rotate.
Cause
Main motor (M1)
Step
1
DC controller/DC
power supply PCB
Checks
Set the meter to the ‘30VDC’
range. Does the voltage
between J903-1 (+) and J903-2
change from about 0 V to about
20 V according to the operation
of the main motor?
YES/NO
Remedies
YES
Replace the main motor.
NO
Check the wiring from the
motor to the DC controller/
DC power supply PCB; if
normal, replace the DC
controller/DC power
supply PCB.
YES/NO
Remedies
10. The copyboard fails to move.
Cause
Step
Checks
Main motor (M1)
1
Is the main motor rotating?
NO
See “The main motor fails
to rotate.”
Copyboard,
Copyboard drive
assembly
2
Push the copyboard by hand.
Does it move smoothly?
NO
Check the copyboard and
copyboard drive assembly.
DC controller/DC
power supply PCB
3
Set the meter to the ‘200Ω’
range. Disconnect J902 from
the copyboard drive solenoid,
and measure the resistance
between terminals of SL2.
Is it about 120Ω?
YES
Check the wiring from the
solenoid to the DC controller/DC power supply
PCB; if normal, replace
the DC controller/DC
power supply PCB.
NO
Check the solenoid (SL2).
Copyboard drive
solenoid (SL2)
4-5
CHAPTER 4 TROUBLESHOOTING MALFUNCTIONS
11.
(paper feeding normally)
Cause
Step
Checks
YES/NO
Copy paper
1
Are there pieces of copy paper in
the delivery assembly or pick-up
assembly?
YES
Remove the pieces of
paper.
Sensor lever
2
Is the movement of the delivery
sensor and pick-up sensor levers
smooth?
NO
Correct the movement.
Delivery sensor PCB
(Q801)
3
Replace the delivery sensor
PCB. Does the copier operate
normally?
YES
End.
NO
Check the wiring from the
control panel PCB to the
DC controller/DC power
supply PCB; if normal,
replace the DC
controller/DC power
supply PCB.
YES/NO
Remedies
DC controller/DC
power supply PCB
12.
Remedies
(at time of jam)
Cause
Control panel PCB
Step
1
Checks
Replace the control panel PCB.
Does the indicator go ON?
DC controller/DC
power supply PCB
YES
End.
NO
Replace the DC controller/
DC power supply PCB.
YES/NO
Remedies
13. The fixing heater fails to operate.
Cause
Step
Checks
Heater (H1),
Thermal fuse (FU2)
1
Is continuity present between
terminals of the heater?
NO
Replace the fixing
assembly.
Thermistor
(TH1, TH2)
2
Is the resistance between the
following terminals on the control
panel PCB 0Ω or about 1.3 MΩ?
YES
Replace the fixing
assembly.
YES
End.
NO
Replace the DC controller/
DC power supply PCB.
TH1
Fixing assembly
DC controller/DC
power supply PCB
4-6
3
J603-1 ↔ J603-2
Replace the fixing assembly.
Is the problem corrected?
CHAPTER 5 TROUBLESHOOTING PAPER FEED PROBLEMS
CHAPTER 5 TROUBLESHOOTING PAPER FEED
PROBLEMS
A. Copy Paper Jams
Jams can be classified according to location within the copier:
q Pick-up assembly
w Separation/feeding assembly
e Fixing/delivery assembly
The discussions that follow are organized with reference to these assemblies.
5
3
2
1
Figure 5-1A
5-1
CHAPTER 5 TROUBLESHOOTING PAPER FEED PROBLEMS
1. Pick-Up Assembly
Cause
Copy paper
Step
Checks
YES/NO
Remedies
1
Try copy paper of a type
recommended by Canon.
Is the problem corrected?
YES
Advise the user to use
recommended paper.
2
Is the copy paper curled or wavy,
or otherwise deformed?
YES
Replace the copy paper;
advise the user on the
correct method of storage.
Pick-up sensor lever
3
Is the movement of the pick-up
sensor lever smooth?
NO
Adjust the movement of
the pick-up sensor lever.
Spring (pick-up guide
plate;PC420/430/
FC220)
4
Check the movement of the pickup guide plate found under the
pick-up roller. Is its movement
smooth?
NO
Check the position of the
spring of the pick-up guide
plate.
Pick-up roller
5
Is the pick-up roller deformed or
worn?
YES
Replace the pick-up roller.
NO
1. Check the spring.
2. Check the spring clutch.
YES/NO
Remedies
Spring (for pick-up
control),
Spring clutch
(PC420/430/FC220)
2. Separation/Feeding Assembly
Cause
Copy paper
Step
Checks
1
Try paper of a type recommended by Canon.
Is the problem corrected?
YES
Advise the user to use
recommended paper.
2
Is the copy paper curled or wavy,
or otherwise deformed?
YES
Replace the copy paper;
advise the user on the
correct method of storage.
Feeding assembly
3
Is foreign matter found in the
feeding assembly?
YES
Remove the foreign
matter.
Static eliminator
4
Is the static eliminator soiled with
toner?
YES
Clean the static eliminator.
Registration roller
5
Is the registration roller worn,
deformed, or soiled?
YES
If dirt is found, clean it
using alcohol; if worn or
deformed, replace it.
NO
1. Check the spring.
2. Check the spring clutch
in the registration
assembly.
Spring (for registration
control),
Spring clutch
(registration assembly)
5-2
CHAPTER 5 TROUBLESHOOTING PAPER FEED PROBLEMS
3. Fixing/Delivery Assembly
Cause
Step
Checks
YES/NO
Remedies
Separation/Feeding
assembly
1
Are the copy image and the
document matched correctly?
NO
Check the separation/
feeding assembly.
Fixing assembly inlet
guide
2
Is the inlet guide soiled with
foreign matter or toner?
YES
Clean it.
Delivery sensor lever
3
Does the delivery sensor lever
move smoothly?
NO
Correct it so that the lever
moves smoothly.
Delivery roller
assembly
4
Is the delivery sensor (Q801)
PCB normal?
YES
Check the delivery roller
assembly.
NO
Replace the delivery
sensor PCB.
Delivery sensor PCB
5-3
CHAPTER 5 TROUBLESHOOTING PAPER FEED PROBLEMS
B. Feeding Faults
1. Double Feeding
Cause
Step
Checks
YES/NO
Remedies
Copy paper
1
Try copy paper of a type
recommended by Canon.
YES
Advise the user to use
recommended paper.
Separation pad
2
Check the movement of the pickup guide plate.
Is the movement smooth?
YES
Check the condition of the
separation pad.
NO
Check the position of
spring.
Step
Checks
YES/NO
Remedies
Pick-up assembly,
Registration roller
1
Switch the copier OFF while the
copy paper is moving through
the feeding assembly.
Is the paper wrinkled at the
time? Or, is it moving askew?
YES
Check the pick-up assembly. Check the registration
roller.
Copy paper
2
Try paper fresh out of package.
Is the problem corrected?
YES
The paper may be moist;
advise the user on the
correct method of storage.
Also, advise the user to
remove curling before
feeding paper for a second
time when making twosided/overlay copies.
3
Try copy paper of a type
recommended by Canon.
YES
Advise the user to use
recommended paper.
4
Is the inlet guide soiled with
foreign matter or toner?
YES
Clean it using solvent.
NO
Check the fixing assembly.
Spring (pick-up guide
plate;
PC420/430/FC220)
2. Wrinkles
Fixing assembly
Cause
5-4
Inlet guide
Fixing assembly
CHAPTER 6 ARRANGEMENT AND FUNCTIONS OF ELECTRICAL PARTS
CHAPTER 6 ARRANGEMENT AND FUNCTIONS OF
ELECTRICAL PARTS
A. Sensors and Solenoids
SL1
Q902
SL2
PD602
PD601
Q901
Q131
Q801
6
Figure 6-1A
Symbol
Name
Photointerrupter
Photodiode
Solenoid
Notation
Q131
Q801
Q901
Q902
PD601
PD602
SL1
SL2
Description
Pick-up assembly paper sensor
Delivery assembly paper sensor
Motor rotation sensor
Copyboard position sensor
Intensity sensor
AE sensor
Pick-up/registration solenoid
Copyboard drive solenoid
6-1
CHAPTER 6 ARRANGEMENT AND FUNCTIONS OF ELECTRICAL PARTS
B. Switches
SW1
SW604
SW606
SW2
Figure 6-1B
Symbol
6-2
Name
Notation
Description
Switch
SW1
SW2
Top cover switch
Delivery assembly door switch
Switch
SW604
SW606
Power switch
Density 3-setting switch
CHAPTER 6 ARRANGEMENT AND FUNCTIONS OF ELECTRICAL PARTS
C. Lamp, Heater, Motor, and Others
M1
FU2
TH1
H1
Figure 6-1C
Symbol
M
Name
Notation
Description
Heater
H1
Fixing heater
Motor
M1
Main motor
Thermistor
TH1
Fixing heater temperature detection
Thermal fuse
FU2
Fixing heater overheating detection
6-3
CHAPTER 6 ARRANGEMENT AND FUNCTIONS OF ELECTRICAL PARTS
D. Printed Circuit Board (PCB)
6
3
5
2
1
4
Figure 6-1D
Ref.
1
DC controller/DC power supply PCB
2
Control panel PCB
Scanning lamp PCB
Delivery sensor PCB
Motor rotation sensor PCB
Copyboard position sensor PCB
3
4
5
6
6-4
Name
Description
Controls sequence, supplies DC power, controls
scanning lamp ON
Controls/displays copying operation
Scanning lamp (LA1-LA8)
Detects delivery
Detects main motor rotation
Detects copyboard position
CHAPTER 6 ARRANGEMENT AND FUNCTIONS OF ELECTRICAL PARTS
E. Variable Resistors (VR) and Check Pins by PCB
Of the variable resistors (VR) and check pins used in the copier, those used in the
field are discussed herein.
Do not touch those VRs and check pins not discussed herein; they are for factory
use only and require special tools and high precision for adjustment.
Note:
1. VRs that may be used
in the field. .............................
2. VRs that must not be
used in the field. ....................
J101
22(16)
21(17)
1. DC Controller/DC Power Supply PCB
J102
(T107)
J103
1
2
1
J108
J104
J202
J5
2
VR103
12
VR102
1
J201
J6
J8
VR101
J7
Note: The pin No. in parentheses refers to the PC400/FC200.
Figure 6-1E
6-5
CHAPTER 6 ARRANGEMENT AND FUNCTIONS OF ELECTRICAL PARTS
2. Control Panel PCB
a. PC420/430/FC220
VR602 VR603 VR604
7
1
J601
1
1
22
2
4
5
J621
J603
1
21
J611
Figure 6-2E
b.
PC400/FC200
J621
4
1
J603
5
VR604
17
1
7
J611
1
2
1
18
J601
Figure 6-3E
VR
Description
VR602 Use it to adjust the AE offset (use it only after replacing the scanning lamp unit, intensity
sensor, AE sensor, or control panel PCB).
VR603 Use it to adjust the AE gain (use it only after replacing the scanning lamp unit, intensity
sensor, AE sensor, or control panel PCB).
VR604 Use it to adjust the light intensity (use it only after replacing the scanning lamp unit, intensity
sensor, AE sensor, or control panel PCB).
Table 6-1E
6-6
CHAPTER 7 SELF DIAGNOSIS
CHAPTER 7 SELF DIAGNOSIS
The copier’s microprocessor on the DC controller/DC power supply PCB is
equipped with a self diagnostic mechanism that checks the condition of the machine;
when the mechanism detects an error, it indicates an error code on the copy count
display.
(The PC400/FC200 does not have a copy count display; it indicates an error
condition by flashing the Jam indicator.)
‘E6’ is represented by alternating
Code
(Note)
Cause
• Thermistor (TH1; faulty)
• Fixing heater (H1; faulty)
• DC controller/DC power supply (faulty)
Description
• The temperature of the fixing heater is
215°C or more.
• The temperature of the fixing heater
does not reach 80°C within 2.5 sec after
copying operation has started.
• The temperature of the fixing heater
lowers below 135°C after has reached
150°C.
• The temperature of the fixing heater
does not reach 150°C within 7.5 sec
after copying operation has started.
• The maximum supply power is detected
for about 5 sec after the temperature of
the fixing heater has reached 150°C.
Note:
If an error associated with ‘E0’ is detected, ‘E’ is displayed (PC420/430/FC220)
or the Jam indicator (PC400/FC200) remains ON for about 0.5 sec; thereafter,
the power goes out.
7
7-1
CHAPTER 7 SELF DIAGNOSIS
Code
Cause
Description
• Copyboard drive assembly
(faulty operation)
• Copyboard drive solenoid
(SL2; faulty)
• Copyboard position sensor PCB
(Q902; faulty)
• DC controller/DC power supply PCB
(faulty)
• The copyboard position sensor (Q902)
goes ON when copying operation starts.
• The copyboard position sensor (Q902)
is ON 0.8 sec after copying operation
has started.
• The copyboard position sensor (Q902)
does not go ON within 5.5 sec after
copying operation has started.
• The copyboard does not reach the start
position within a specific period of time,
or it moves past the start position.
• The copyboard position sensor (Q902)
is ON 1.5 sec after the copyboard has
started moving forward from the start
position.
• The copyboard position sensor (Q902)
does not go ON 10.4 sec after the copyboard has started moving forward from
the start position.
• The copyboard position sensor (Q902)
does not go ON 1.2 sec or 4.7 sec after
the copyboard has started moving in
reverse from the reversal position.
• Control panel PCB (faulty)
• DC controller/DC power supply PCB
(faulty)
• The scanning lamp has remained for 2
sec continuously at such times as not
prescribed.
• Power supply frequency (error)
• The power supply frequency is higher
than specified.
Note:
1. The copier does not use code ‘E1’, ‘E3’, ‘E4’, or ‘E5’.
2. After self diagnosis has gone ON, the copier may be reset by switching it
OFF and then ON.
In the case of ‘E0’, however, the power is automatically turned OFF. To
reset, disconnect the power plug once, open the upper cover, or wait about 5
minutes without any operation; during the period, the microprocessor
remains powered and retains ‘E0’.
This consideration is to prevent the user from resetting the machine easily
when the thermistor may have blown; otherwise, the fixing heater would
become overheated, damaging parts near it.
3. Activation of self diagnosis forces the fixing heater (H1) and main motor (M1)
OFF.
7-2
APPENDIX
A. General Timing Chart
PC400/FC200 General Timing Chart
(A4, 2 copies)
1 sec
Power switch
ON
Sequence
Copyboard
STBY
Copy paper inserted
Copy paper inserted
INTR
CBRV
STOP
CBFW
COPY
CBRV
CBFW
LSTR
STOP
CBRV
STBY
1 Main motor (M1)
Document position sensor
2 (Q902)
Copyboard drive solenoid
3 (SL2)
4 Scanning lamp (LA1-LA8)
5 Fixing heater (H1)
6 Primary AC bias
7 Primary DC bias
-240V
-625V
8 Developing AC bias
9 Developing DC bias
10 Transfer
-400V
*
-130 to -550V
**
*
*
11 Pick-up sensor (Q131)
12 Registration solenoid (SL1)
13 Delivery sensor (Q801)
* Cleaning mode.
** Measurement mode.
A-1
PC420/430/FC220 General Timing Chart
(A4, 2 copies)
1 sec
Power switch
ON
Sequence
Copyboard
STBY
Copy paper inserted
INTR
CBRV
STOP
CBFW
COPY
CBRV
CBFW
LSTR
STOP
CBRV
1 Main motor (M1)
Document position sensor
2 (Q902)
Copyboard drive solenoid
3 (SL2)
4 Scanning lamp (LA1-LA8)
5 Fixing heater (H1)
6 Primary AC bias
7 Primary DC bias
-240V
-625V
8 Developing AC bias
9 Developing DC bias
10 Transfer
-400V
*
11 Pick-up sensor (Q131)
12 Pick-up solenoid (SL1)
13 Delivery sensor (Q801)
* Cleaning mode.
** Measurement mode.
A-2
-120 to -560V
**
*
*
STBY
APPENDIX
B. Signals/Abbreviations List
What follows below is a list of signals and abbreviations used in the chapters of the
manual and circuit diagrams.
The abbreviations within parentheses represent analog signals, which cannot be
expressed in terms of ‘1’ or ‘0’.
1. Signals
ACBTP
[AE]
CBSD
DCBPWM
DCTPWM
DGT0
DGT1
DGT2
HTRD
HVPAC
HVPDC
HVPHO
HVTDC
KEYR0
KEYR1
LAPWM
[LID]
MMCLK
MMD
PWOFF
PWSON
PUSD
RELAYED
RGSD
[TH1]
TREV
VPEAK
ZXDP
AC BIAS TIMING PULSE COMMAND
AE SIGNAL
COPYBOARD DRIVE SOLENOID DRIVE COMMAND
DC BIAS CONTROL COMMAND
TRANSFER DC BIAS CONTROL COMMAND
OSCILLATION SIGNAL 0
OSCILLATION SIGNAL 1
OSCILLATION SIGNAL 2
FIXING HEATER DRIVE COMMAND
PRIMARY AC BIAS ON COMMAND
PRIMARY DC BIAS ON COMMAND
PRIMARY DC BIAS HIGH OUTPUT COMMAND
TRANSFER DC BIAS ON COMMAND
RETURN SIGNAL 0
RETURN SIGNAL 1
LAMP DRIVE COMMAND
LAMP INTENSITY DETECTION SIGNAL
MAIN MOTOR CLOCK PULSE SIGNAL
MAIN MOTOR DRIVE COMMAND
POWER OFF COMMAND
POWER SWITCH ON SIGNAL
PICK-UP ROLLER SOLENOID DRIVE COMMAND
RELAY DRIVE COMMAND
REGISTRATION SOLENOID DRIVE COMMAND
THERMISTOR SIGNAL 1
TRANSFER REVERSE DC BIAS ON COMMAND
VOLTAGE PEAK DETECT SIGNAL
ZERO CROSS DETECTION SIGNAL
A-3
APPENDIX
2. Abbreviations
INTR
LSTR
CBFW
CBRV
STBY
A-4
INITIAL ROTATION
LAST ROTATION
COPYBOARD FORWARD
COPYBOARD REVERSE
STANDBY
C. General Circuit Diagram
PC400/FC200 GENERAL CIRCUIT DIAGRAM
5
4
3
3
2
1
2
W
+24V
17
W
S_IN
15
16
W
3
W
S_OUT
14
S_CLK
4
5
6
W
LID
13
W
12
W
11
KEYR0
TH1
7
8
11
10
9
W
10
6
PWSON W
W
SEG2
VR
W
GND
5
9
W
DGT0
4
2
1
E
J905F
J905
J901
1 2
J7
J8
2
1
2
3
J903F
G
B
T
1
J903
P
1
3
4
2
+5V
MMCLK
V
J901PP
J902
1 2
V
J906PP
V
2
J901F
V
1
J902F
LEG
5
6
7
9
8
+24V
RGSD
PK
1 2
J6
D
V
V
3
Y
1 2
J5
Y
Black
Blue
Brown
Gray
Green
Orange
Pink
Red
Sky Blue
Violet
White
Yellow
Yellow Green
V
V
120/230V
CBSD
KEYR0
PK
J1
CBSP
LEG
DGT0
HOT
Color Code
3
Y
2
J201
RETURN
BK
BL
BR
GY
GN
OR
PK
R
SB
V
W
Y
YG
F
DC controller/DC power supply PCB
10
Delivery door switch
G
J202
+24V
MMD
BK
W
12
Door switch
JP350 J101 J102
11
100V
BK
W
W
W
DGT2
R
Y
1
RETURN
J108
DGT1
W
+5V
12
13
W
GND
14
15
1
W
16
17
1
BK
J909F
J104
HOT
SW2
Y
R
1
4
3
2
1
5
J621P
J601
J103
SW1
4
LEG BL
DGT1
KEYRO
GND Y
Fixing heater H1
N.C N.C
J621F
J906PP
1
H
1
J908F
3 2
1
Control panel PCB
3
J906F
2
3
2
3
1
TH1 BL
J907
J907F
PD601
J801
NC
J603P
J908P J909P
J906
I
Intensity sensor
J603F
Y
R
Y
1 2
Q801
W
Thermal fuse 2 FU2
BK/W
Scannig lamp PCB
1
1
Delivery sensor
Fixing heater
temperature sensor
TH1
2
Y
6
8
7
S_CHECKW
8
7
9
C
J904F
R5
J904
M
M1
Q902
Copyboard
position
detection
SL2
SL1
Main motor
Registration
solenoid
Q901
B
Motor rotation
detection
Copyboard
drive solenoid
A
A-5
PC420/430/FC220 GENERAL CIRCUIT DIAGRAM
6
5
4
3
Fixing heater
temperature sensor
2
Q801
AE sensor
3
Y
Y
4
3
2
1
5
4
3
R
R
DGT1 Y
KEYRO
GND Y
LEG BL
2
1
1
W
KEYR3
W
W
3
W
SEG1
KEYR2
20
4
5
W
AE
19
18
W
SEG0
6
W
17
16
+24V
7
8
W
S_IN
9
W
15
S_OUT
10
W
14
13
S_CLK
11
W
12
LID
12
W
13
W
KEYR0
TH1
11
W
VR
10
14
15
PWSON W
8
9
16
17
S_CHECKW
W
DGT1
7
6
W
SEG2
18
W
GND
19
W
DGT0
5
W
DGT2
2
W
1
E
J905F
J905
J901PP
J902
1 2
J901
1 2
2
1
2
3
J903F
J903
SL2
Copyboard
position
detection
SL1
Pick-up
solenoid
Copyboard
drive solenoid
J8
Main motor
G
B
C
J904F
R5
J904
M1
P
T
1
M
Q902
J7
1
2
MMCLK
V
J906PP
V
3
+5V
3
4
LEG
5
MMD
6
V
+24V
PUSD
Y
8
9
7
+24V
Y
CBSD
10
CBSP
PK
11
KEYR0
PK
2
J901F
V
2
1
2
J902F
J6
D
V
1
1
J5
V
Color Code
V
V
120/230V
LEG
DGT0
RETURN
A-6
F
J202
J201
J1
Black
Blue
Brown
Gray
Green
Orange
Pink
Red
Sky Blue
Violet
White
Yellow
Yellow Green
J621P
DC controller/DC power supply PCB
HOT
BK
BL
BR
GY
GN
OR
PK
R
SB
V
W
Y
YG
4
W
+5V
Y
BK
Y
Delivery door switch
H
J621F
JP350 J101 J102
12
Door switch
2
R
1
100V
BK
W
J104
RETURN
BK
W
3
W
GND
J909F
20
21
22
J908F
J108
J103
HOT
SW2
1
J601
J906PP
SW1
2
Y
2
1
TH1 BL
J907
Fixing heater H1
W
Thermal fuse 2 FU2
Y
3
1
3
G
2
2
J801
NC
Control panel PCB
J906
3
I
PD601
J603P
J908P J909P
J906F
Intensity sensor
PD602
J603F
Y
R
BK/W
Scannig lamp PCB
1
J907F
TH1
1
Delivery sensor
22
7
2
8
21
9
Q901
B
Motor rotation
detection
A
APPENDIX
D. Special Tools Table
What follows below is a table of special tools used for servicing the machine in
addition to the standard tools set.
No.
1
Tool name
Digital
multimeter
Tool Number
CK-0552
Shape
Category*
B
Remarks
For adjusting the AE
mechanism.
*The tools are categorized as follows:
A:
tools that must be carried by each service person.
B:
tools that must be carried by a group of about five service persons.
C:
tools that must be kept by each workshop.
A-7
APPENDIX
E. Solvents/Oils Table
No.
Name
Uses
Composition
Remarks
1
Alcohol
Cleaning:
e.g., glass, plastic,
rubber parts;
external covers
Hydrocarbon (fluorine family)
Alcohol
Surface active agent
• Do not bring near fire.
• Procure locally.
• Isopropyl alcohol may be
substituted.
2
Solvent
Cleaning:
e.g., metal;
oil or toner dirt
Hydrocarbon
(fluorine/chlorine family)
Alcohol
• Do not bring near fire.
• Procure locally.
3
Heat-resisting
grease
Lubricating:
drive assemblies
Lithium soap
(mineral oil family)
Molybdenum bisulfate
• CK-0427 (500 g/can)
4
Lubricating oil
Mineral oil (paraffin family)
• CK-0451 (100 cc)
5
Lubricating oil
Mineral oil (paraffin family)
• CK-0524 (100 cc)
A-8
APPENDIX
F. Specifications
Performance
System
Type
Item
PC400/FC200
PC420/430/FC220
Body
Portable (w/ grips)
Copyboard
Moving
Light source
Tungsten lamp of fuse type
Lens
Lens array
Photosensitive medium
OPC (24 dia.)
Copying
Indirect electrostatic
Charging
Roller (direct charging)
Exposure
Slit (moving copyboard)
Copy density adjustment
Manual
Development
Dry
Pick-up
Manual tray
Separation
Curvature + Static eliminator
Cleaning
Blade
Fixing
Plane heater
Document type
Sheet, Book, 3-D object (2 kg/4.4 lb max.)
Maximum document size
LTR/A4; LGL*
Reproduction ratio
1:1 (±1.2%)
Wait time
0 sec. (approx.; at 20°C/68°F)
First copy
22 sec. (LTR)
Continuous copying
Not available
1 to 9 copies or F
Copying speed
4 copies/min. (approx.; A4R/LTRR or smaller)
4 copies/min. (A4R/LTR-R or
smaller)
3 copies/min.(LGL)
Copy size
A4/LTR; LGL* max.; postcard min.
Copy paper type
52 to 128 g/m2, Tracing paper, Colored paper, OHP film, Postcard
(vertical), Labels, Wrapping paper (63 g/m2)
Two-sided copying
• Same edge orientation.
• Copying on each side no more
than twice.
• Paper of 64 to 128 g/m2.
Overlay copying
• Paper of 64 to 128 g/m2.
• Copying on each side no more
than three times.
Automatic (AE) or Manual
Multifeeder
Multifeeder tray
5 mm deep (about 50 sheets of
A4, 80 g/m2)
Copy tray
9 copies (approx.; A4/LTR, 80 g/m2)
Non-image width
2 mm (leading edge)
A4: 0 mm (left/right)
LTR/LGL: 2 mm (left/right)
Auto power-off
Available (5 min, approx.)
*PC430 only.
A-9
APPENDIX
Item
PC400/FC200
PC420/430/FC220
7.5° to 32.5°C/45.5° to 90.5°F
Temperature
Operating
5% to 85%
Humidity
environment
Atmospheric pressure 810.6 hPa to 1013.3 hPa (0.8 to 1 atm)
Serial numbers
Serial numbers
120V, 60Hz
ZTG ✕✕✕✕✕ (PC400:WHITE)
ZTH ✕✕✕✕✕ (PC400:GRAY)
NVD
✕✕✕✕✕
(FC220:WHITE)
ZTJ
✕✕✕✕✕
(PC420:WHITE)
230V, 50Hz
RTL/PTQ
✕✕✕✕✕
(FC200:WHITE)
UTP/UTQ
RTM/PTR
✕✕✕✕✕ (FC220:WHITE)
PTS ✕✕✕✕✕ (FC220:WHITE)
PTT ✕✕✕✕✕ (FC220:WHITE)
Maximum
Power
Standby
consumption
Continuous
0.7 kW or less
Others
Power
supply
Noise
Copying
0.1 W (approx.; 5 min; reference only)
0.2 kWh (reference only)
71 dB
Standby
Ozone
0.01 ppm or less (average over 8 hr)
Width
14.1 in./359 mm
Dimensions Depth
15.7 in./402 mm
Height
4.1 in./108 mm
Weight (including cartridge) 16.6 lb/7.4 kg (approx.)
Consumables
A-10
Copy paper
Keep wrapped to protect against humidity.
Cartridge
See CHAPTER 1.
Sound power level
by ISO
Prepared by
OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DEPARTMENT 1
OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DIVISION
CANON INC.
Printed in Japan
REVISION 0 (JAN. 1998) [23715]
5-1, Hakusan 7-chome, Toride-shi, Ibaraki 302 Japan
This publication is printed on
70% reprocessed paper.
PRINTED IN JAPAN (IMPRIME AU JAPON)
0198M2.01-1