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CHAPTER 13 TROUBLESHOOTING
13-250
COPYRIGHT
©
2000 CANON INC. CANON imageRUNNER 600 REV.1 JAN. 2000 PRINTED IN U.S.A.
IX . SELF DIAGNOSIS
The microprocessor on the copier’s DC controller PCB is equipped with a mechanism that
checks the state of the copier (especially its sensors). It runs a check as needed and, upon detection
of a fault, indicates a code on the control panel.
A. Copier Self Diagnosis
Code Cause
• The main thermistor (TH1) has poor
contact or an open circuit.
• The fixing heater (H1, H2) has an open
circuit.
• The thermal switch (TS1) has an open
circuit.
• The SSR is faulty.
• The DC control PCB is faulty.
• The sub thermistor (TH2) has poor
contact or an open circuit.
After indicating E000, the power switch
turns off in about 5 sec.
• The main thermistor (TH1) has a short
circuit.
• The SSR is faulty.
• The DC controller PCB is faulty.
• The sub thermistor (TH2) has detected
overheating.
• The main thermistor (TH1) has poor
contact or an open circuit.
• The fixing heater (H1, H2) has an open
circuit.
• The thermal switch (TS1) has an open
circuit.
• The SSR is faulty.
• The DC controller PCB is faulty.
• The main thermistor (TH1) has poor
contact or an open circuit.
• The fixing heater (H1, H2) has an open
circuit.
• The thermal switch (TS1) has an open
circuit.
• The SSR is faulty.
• The DC controller PCB is faulty.
• The SSR is faulty.
• The DC controller PCB is faulty.
• The cleaning belt inside the fixing
assembly has been taken up.
• The fixing cleaning belt length sensor
(PS7) is faulty.
• The DC controller PCB is faulty.
Description
• The temperature of the upper fixing
roller does not reach 70°C within 3 min
30 sec after power-on.
• The temperature of the upper fixing
roller exceeds 230°C for 2 sec or more.
• The difference in detection temperature
between the main thermistor (TH1) and
the sub thermistor (TH2) is 50°C for 1
sec or more.
• The temperature of the upper fixing
roller does not reach 100°C within 2.5
min after it has exceeded 70°C.
• The temperature of the upper fixing
roller does not reach 150°C within 2.5
min after it has exceeded 100°C.
• The temperature of the upper fixing
roller drops to 70°C or less for 2 sec
after it has reached 100°C.
• The SSR used to drive the fixing heater
has a short circuit.
• The cleaning belt inside the fixing
assembly has been taken up more than a
specific length.
E000
(NOTE 1)
E001
(NOTE 1)
E002
(NOTE 1)
E004
(NOTE 1)
E005
(NOTE 1)
E003
(NOTE 1)