Self Diagnosis; A. Copier - Canon NP6260 Service Manual

CHAPTER 11 TROUBLESHOOTING
VIII. SELF DIAGNOSIS
The microprocessor on the machine's DC controller PCB is equipped with a mecha-
nism that checks the condition of the machine (of its sensors, in particular), and indicates
an error code when it detects a fault.

A. Copier

Code
• Main thermistor (TH1; poor contact,
open circuit)
• Fixing heater (H1, H2; open circuit)
E000
• SSR (fault)
• DC controller PCB (fault)
(Note 1)
• Sub thermistor (TH2; poor contact
or open circuit; the power will turn
off in about 5 sec after indication)
• Main thermistor (TH1; short circuit)
• SSR (fault)
E001
• DC controller PCB (fault)
• Sub thermistor (TH2; error tempera-
ture increase)
• Main thermistor (TH1; poor contact,
open circuit)
• Fixing heater (H1, H2)
E002
• Thermal switch (TS1; open circuit)
• SSR (fault)
• DC controller PCB (fault)
• Main thermistor (TH1; poor contact)
• Fixing heater (H1, H2; open circuit)
E003
• Thermal switch (TS1; open circuit)
• SSR (fault)
• DC controller PCB (fault)
• SSR (fault)
E004
• DC controller PCB (fault)
• Cleaning belt for the fixing assembly
(taken up)
E005
• Cleaning belt sensor (PS11; fault)
• DC controller PCB (fault)
• Fixing/feeding unit sensor
(PS53;fault)
E006
• Connector for fixing assembly (fault;
rear)
• DC controller PCB (fault)
11-260
COPYRIGHT © 1997 CANON INC.
Cause
CANON NP6560/NP6360/NP6260 REV. 0 NOV. 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
Description
• The temperature of the upper fixing
roller does not reach 70°C within 3
min and 30 after power-on.
• The temperature of the upper fixing
roller exceeds 230°C for 2 sec or
more.
• The temperature of the upper fixing
roller does not reach 100°C in 2 min
after it has reached 70°C.
• The temperature of the upper fixing
roller does not reach 150°C in 2 sec
or more after it has reached 100°C.
• The temperature of the upper fixing
roller is 70°C or less for 2 sec or
more after it has reached 100°C.
• The SSR used to drive the fixing
heater has a short circuit.
• The cleaning belt for the fixing
assembly has been taken up more
than specified.
• The fixing feeding assembly
became disconnected during cop-
ying.