Viii. Self Diagnosis - Canon 1130 Service Manual

VIII. SELF DIAGNOSIS

A. Copier
The R-CPU and the DC-CPU of the copier's CPU PCB are equipped with a self diagnostic
mechanism to check the state of the machine (particularly, the condition of sensors). The
mechanism runs checks as needed, and indicates a code on the control panel when it finds a fault.
The tables that follow show codes and timing of detection, the latter with discussions of detail
codes indicated in service mode (COPIER>DISPLAY>JAM/ERR).
Code
E000
COPYRIGHT © 2002 CANON INC.
Cause
The discussions that follow are
compiled according to detail code.
• The fixing thermistor is faulty.
• The SSR is faulty.
• The DC driver PCB is faulty.
• The CPU PCB is faulty.
• The fixing thermistor is faulty.
• The fixing heater (H1, H2) has an
open circuit.
• The thermal switch (TP2, TP3) has
an open circuit.
• The SSR is faulty.
CANON CLC1100/1130/1150/1160/1180 REV.1 JAN. 2000 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 13 TROUBLESHOOTING
Timing of detection
xx indicates a heater.
xx=01: upper heater
xx=02: lower heater
xx01 The high temperature
detection circuit on the DC
driver PCB has detected
overheating (220ºC or more)
in the middle of the heater.
xx02 The thermistor (THM1/
THM3) has detected 210ºC.
xx04 The high temperature
detection circuit on the DC
driver PCB has detected
overheating on the ends of the
heater (220ºC or more).
xx05 The open-circuit detection
circuit of the DC driver PCB
has determined that the
difference in temperature (as
detected by thermistors)
between the middle and the
end is 50ºC or more.
xx21 The temperature does not
increase by 3ºC or more in 4
min at power-on (i.e., the
temperature of the fixing
assembly is 100ºC or less).
xx32 At power-on (i.e., the
temperature of the fixing
assembly is 100ºC or more or
130ºC or more), the
temperature does not increase
by 1ºC or more in 2 min.
xx40 A temperature of 50ºC or less
has been detected for 1 sec or
more during standby.
xx50 A temperature of 50ºC or less
has been detected for 1 sec or
more during copying.
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