Canon PC400 Service Manual - Page 169

Control panel PCB, DC controller/DC

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CHAPTER 10 TROUBLESHOOTING 3. E2 Cause Copyboard DC controller/DC power supply PCB Copyboard drive assembly, Copyboard glass assembly 4. E6 Cause Control panel PCB 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 NO Replace the DC controller/DC power supply PCB. 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. Step Checks 1 Replace the control panel PCB. Is the problem corrected? YES/NO Remedies 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. COPYRIGHT © 1998 CANON INC. CANON PC400/420/430,FC200/220 REV.0 JAN.1998 PRINTED IN JAPAN (IMPRIME AU JAPON) 10-25

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COPYRIGHT © 1998 CANON INC.
CANON PC400/420/430,FC200/220 REV.0 JAN.1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 10 TROUBLESHOOTING
10-25
3.
E2
Cause
Step
Checks
YES/NO
Remedies
Copyboard
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.”
DC controller/DC
power supply PCB
3
Does the copyboard move in
reverse after copying operation
has started and move forward
after it has reached the copy-
board start position?
YES
Replace the DC con-
troller/DC power supply
PCB.
Copyboard drive
assembly,
Copyboard glass
assembly
NO
1. Check the copyboard
position sensor (Q902).
2. Try replacing the copy-
board drive assembly.
3. Check the start position
cam and reversal cam
in the copyboard glass
assembly.
Cause
Step
Checks
YES/NO
Remedies
Control panel PCB
1
Replace the control panel PCB.
Is the problem corrected?
YES
End.
DC controller/DC
power supply PCB
NO
Check the harness from
the control panel PCB to
the DC controller/DC
power supply PCB; if
normal, replace/DC power
supply PCB.
4.
E6