Canon 1000 Service Manual page 747

Code
• CCD unit for pattern reading
(faulty)
• PCB for pattern reading (faulty)
• DC controller PCB (faulty)
In addition, a fault in the primary
charging as sembly or the transfer
belt may have prevented the
formation of a pattern.
E194
The scanning lamp has deteriorated
or has an open circuit.
E220
• The lamp regulator PCB (faulty)
• The reader controller PCB (faulty)
• DC power supply PCB unit (faulty)
• DC controller PCB (faulty)
• DC power supply cooling fan (faulty)
E260
• Bar code label (faulty or absent)
E350
• Image processor PCB (faulty)
• ECO PCB (faulty)
• Image processor PCB (faulty)
• ECO PCB (faulty)
E351
• Connection (between image
processor and ECO CPB)
• Bar code label (faulty or absent)
E352
COPYRIGHT © 2001 CANON INC.
Cause
CANON CLC1000/1000S/3100 REV.2 MAY 2001 PRINTED IN JAPAN (IMPRIME AU JAPON)
7. TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
xx01 The center of a pattern cannot be
determined.
xx02 The center position (difference) in
relation to the M pattern is 61 or more
in main scanning direction.
xx03 The center position (difference) in
relation to the M pattern is 113 or more
for Y and Bk and 141 or more for C in
sub scanning direction.
0001 After the shutter motor has started to
rotate, the shutter open sensor does
not turn on after a specific period of
time.
0002 After the shutter motor has started to
rotate, the shutter closed sensor does
not turn on after a specific period of
time.
• The scanning lamp lights in stand-by mode
despite that the reader controller PCB does
not send the scanning lamp ON signal.
• The scanning lamp goes OFF during copy-
ing despite that the reader controller PCB
sends out the scanning lamp ON signal.
0001 When the power switch is turned ON,
5V is not present on the DC controller
PCB.
0002 When the main switch is turned on with
the front cover closed, 24 V is not
present on the DC controller PCB.
0003 The thermal switch has detected
overheating of the 5V system on the
DC power supply PCB.
0004 The thermal switch has detected
overheating in the 24VR system on the
DC power supply PCB.
0005 The thermal switch has detected
overheating in the 24VU system on the
DC power supply PCB.
0006 The DC power supply cooling fan is not
rotating normally.
During the first copying operation after the
power switch has been turned ON, the pres-
ence of a bar code label is not confirmed
during a check on the standard white plate.
• The ECO PCB and the image processor PC
are not connected.
• The combination of the ROMs on the ECO
PCB is wrong.
During the execution of 'ADUTO-ADJ' in
service mode, the bar code on the standard
white plate cannot be read.
Description
7-311