Canon PC400 Service Manual - Page 158

Condensation on the copyboard hinders its smooth movement., friction, leading to pick-up failure. - paper feed problems

Page 158 highlights

CHAPTER 10 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. 10-14 COPYRIGHT © 1998 CANON INC. CANON PC400/420/430,FC200/220 REV.0 JAN.1998 PRINTED IN JAPAN (IMPRIME AU JAPON)

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COPYRIGHT © 1998 CANON INC.
CANON PC400/420/430,FC200/220 REV.0 JAN.1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
10-14
CHAPTER 10 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.