Self Diagnosis; Viii. Self Diagnosis - Canon 1000 Service Manual

7. TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS

VIII. SELF DIAGNOSIS

The CPU on the CLC1000's image processor
and DC controller PCB is equipped with a mecha-
nism to check the condition of the machine (sen-
sors, in particular). The mechanism runs a check
as necessary and indicates the presence of an er-
ror upon detection.
Code
See the descriptions that follow.
Fixing thermistor (short circuit)
Triac (short circuit)
DC controller PCB (faulty)
E000
Fixing thermistor (poor contact,
open circuit)
Fixing heater (open circuit)
Triac (faulty)
DC controller PCB (faulty)
7-296
COPYRIGHT © 2001 CANON INC.
codes; you may check these codes using 'JAM/
ERROR' under 'DISPLAY' in service mode.
of errors without a detailed code.
Cause
CANON CLC1000/1000S/3100 REV.2 MAY 2001 PRINTED IN JAPAN (IMPRIME AU JAPON)
See the tables that follow for descriptions of
'0001' will be used for the detailed code column
Description
"xx" represents the heater.
xx=01: upper heater
xx=02: lower heater
xx01 The overheating detection circuit on the
DC controller PCB has detected an
overheating condition (220°C or more).
xx02 The thermistor has detected 210°C or
more.
xx20 When control is to 160°C or less, a rise
in temperature of 10°C or more does
not occur within 4 min.
xx40 The temperature drops to 140°C or
less during temperature control for
standby.
xx50 The temp erature drops to 140°C or
less during temperature control for
printing.