Technical information

COPYRIGHT © 2001 CANON INC. 2000 2000 2000 2000 CANON CLC5000 REV.0 JAN. 2001
CHAPTER 5 TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
5-100
DC power supply
CCD unit, Analog processor PCB, Image processor PCB
9) Is DC power present between the following terminals of the analog
processor?
J2504-7 (+) — 8 (–): +5V
J2504-5 (+) — 4 (–): +8V
J2504-3 (+) — 4 (–): +8V
J2504-1 (+) — 2 (–): +15V
NO: See “The DC power is absent.”
YES: Try replacing the following parts:
• CCD unit
• Analog processor PCB
• Image processor PCB
■ Checking the Original Exposure System
1) Check to find out if the copyboard glass has ridden over an obstacle.
2) Clean the scanning lamp, reflecting plate, No. 1/2/3 mirror, standard white plate, and
copyboard glass, and execute ‘AUTO-ADJ’ for ‘CCD’ under ‘FUNC’ in service mode. Is
the problem corrected?