Canon CLC 1130, Service Manual

Page: 370 / 965

COPYRIGHT © 2002 CANON INC. CANON CLC1100/1130/1150/1160/1180 REV.1 FEB. 2002 PRINTED IN JAPAN (IMPRIME AU JAPON)
8-1
CHAPTER 8 FIXING SYSTEM
I. OPERATIONS
A. Outline
Table 8-101 shows the major functions of the fixing unit assembly.
Item Description
Method Heat roller method
Fixing assembly drive Fixing motor (M5)
Fixing heater Main heater (H1): 540 W (100/120 V), 700 W (230 V)
Sub heater (H2):
500 W (common to all voltage models)
Fixing temperature detection Fixing upper thermistor 1 (THM1; at center of fixing upper roller)
Fixing upper thermistor 2 (THM2; at front end of fixing upper
roller)
Fixing lower thermistor 3 (THM3; at center of fixing lower roller)
Fixing lower thermistor 4 (THM4; at rear end of fixing lower roller)
Cleaner Fixing upper cleaning belt (for fixing upper roller)
Fixing lower cleaning belt (for fixing lower roller)
•
Life estimated at about 25,000 copies.
• Driven by the fixing upper cleaning belt solenoid (SL1) and
the fixing lower cleaning belt (SL2).
• Number of operations varies according to the size of paper.
Small size (182 to 216 mm; 1 operation per copy)
Large size (217 to 432 mm; 2 operations per copy)
• Length of cleaning belt detected by the following:
Fixing upper cleaning belt length sensor (PS11)
Fixing lower cleaning length sensor (PS67)
Oil application • Circulatory application of silicone oil by the oil pump (PSP1),
felt, and applying blade.
Capacity: equivalent of about 50,000 copies/L.
Detection of oil level:
by fixing oil level sensor (PS10)
Protective function Detection is executed as follows; shuts off the power to the fixing
heater in response to an error:
•
Reading of thermistors (TH1 through TH4)
• Error in SSR
• Operating temperature (220ºC) of the fixing upper thermal
switch (TP2; rear end of upper roller)
• Operating temperature (220ºC) of the fixing lower thermal
switch (TP3; front end of lower roll
er )
Table 8-101