Chapter 4 Troubleshooting Malfunctions; Troubleshooting Malfunctions; Self Diagnosis;Pc400/Fc200) - Canon PC400 Service Manual

CHAPTER 4 TROUBLESHOOTING MALFUNCTIONS

A. Troubleshooting Malfunctions
1. (self diagnosis; PC400/FC200)
Cause
2. E0
Cause
Thermistor (TH1)
DC controller/DC
power supply PCB
Fixing assembly
Step Checks
1 Switch the copier ON.
Does the Jam indicator remain
On for about 0.5 sec, and does
the copier go OFF automatically
thereafter?
Step Checks
1 Set the meter to the '12VDC'
range, and wait until the fixing
heater is sufficiently cool.
Measure the voltage between
J603-1 (+) and J603-2 (-).
Is it about 3.2 V or more?
2 Does the fixing heater operate
normally?
3 Switch the copier ON, and make
a copy.
Measure the voltage between
J603-1 and J603-2 once again.
Is the voltage lower than that
measured in step 1?
CHAPTER 4 TROUBLESHOOTING MALFUNCTIONS
YES/NO
YES See 'E00'.
NO See the discussions on
'E2', 'E6', and 'E9'.
YES/NO
NO Check the wiring from the
DC controller/DC power
supply PCB to the ther-
mistor (TH1); if normal,
replace the fixing assem-
bly.
NO See "The fixing heater fails
to operate."
YES Replace the DC controller/
DC power supply PCB.
NO
Check the wiring from the
DC controller/DC power
supply PCB to the ther-
mistor (TH1); if normal,
replace the fixing assem-
bly.
Remedies
4
Remedies
4-1