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Table 10-19-2
10-110
COPYRIGHT
©
1997 CANON INC. CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 10 TROUBLESHOOTING
Code Cause
• Thermistor (TH1, TH2;
displacement, poor contact,
open circuit)
• Fixing heater (H1; open circuit,
crack)
• Thermal fuse (FU1;
malfunction)
• Triac (faulty)
• DC controller (faulty)
• Triac (faulty)
• Heater ON detection PCB
(faulty)
• Fixing film (displacement, tear)
• Tension roller (displacement,
malfunction)
• Fixing film motor (M4; faulty)
• Fixing film sensor (PS9; faulty)
• Main motor (M1; faulty)
• DC controller (faulty)
• Counter (open circuit)
• DC controller (faulty)
• Composite power supply
(faulty)
• DC controller (faulty)
• Scanner cable (displacement, tear)
• Scanner home position sensor
(PS1; faulty)
• Scanner motor (M2; faulty)
• DC controller (faulty)
Description
• After the main thermistor (TH1) detection
temperature reaches 95°C, the main ther-
mister detects lower than 95°C for 200 ms.
• After the sub thermistor (TH2) detection
temperature reaches 70°C, the sub ther-
mister detects less than 70°C for 200 ms.
The fixing heater is identified as being on
when the fixing heater drive signal is off
(HTRD=0).
The fixing film sensor output remains ‘1’ or
‘0’ for 1.35 sec or more.
Reference:
The fixing film takes about 1.3 sec to make
a full rotation.
The main motor revolution is not as speci-
fied (MLOCK=0) for 1 sec or more while the
main motor drive signal is on (MMD=1).
Checks are made immediately before the
counter turns on or off and when copying
operation is started.
Normal if drive signal = 0 at time the
counter turns on; Normal if drive signal = 1
at time the counter turns off.
Note: Checks are made only when the
counter is installed.
The high voltage of the composite power
supply is different from the setting.
The scanner does not return to the home
position within 5 sec when it is started.
E002 may be checked in ‘No. 108’ of
service mode.
E003
E004
E030
E007
E010
E064
E202
(keys on
control panel
disabled)