Self Diagnosis; Copier - Canon NP6218 Service Manual

VIII. SELF DIAGNOSIS
A. Copier
The microprocessor on the copier's DC controller is provided with a self diagnosis
mechanism that checks the condition of the machine (sensors, in particular). The copier
runs self diagnosis and, when it identifies an error, indicates a code that represents each
specific error. If the copier finds an error associated with E000, E001, E002, E003, and
E004, it automatically shuts itself off (error auto power-off).
Code
• Thermistor (TH1, TH2;
displacement, poor
contact, open circuit)
• Fixing heater (H1; open
E000
circuit, crack)
• Thermal fuse (FU1;
malfunction)
• Triac (faulty)
• DC controller (faulty)
• Thermistor (TH1, TH2;
short circuit)
• Triac (faulty)
• DC controller (faulty)
E001
• Thermistor (TH1, TH2;
displacement, poor
contact, open circuit)
• Fixing heater (H1; open
circuit, crack)
• Thermal fuse (FU1;
E002
malfunction)
• Triac (faulty)
• DC controller (faulty)
COPYRIGHT © 1997 CANON INC.
Cause
• Beginning 1 second after the copy START key
• Beginning 2 second after the copy START key
• Beginning 4 second after the copy START key
• The detection temperature of the thermistor
• The detection temperature of the sub
• The detection temperature of the thermistor
• The detection temperature of the thermistor
• The thermistor detects a rise in temperature of
• The temperature has increased over 100°C or
• Beginning 1 second after the main thermister
• Beginning 1 second after the main thermister
• Beginning 1 second after the main thermister
• Beginning 1 second after the main thermister
Table 10-19-1
CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 10 TROUBLESHOOTING
Description
is pressed, the main thermister (TH1) does
not reach 50°C for 200 ms.
is pressed, the main thermister (TH1) does
not reach 60°C for 200 ms.
is pressed, the main thermister (TH1) does
not reach 70°C for 200 ms.
(TH1) exceeds 250°C during copying operation.
thermistor (TH2) exceeds 260°C during
copying operation.
(TH1, TH2) rises 30°C over the specified
temperature during copying operation.
(TH1, TH2) rises 30°C over the specified
temperature during copying operation.
40°C or more during standby.
more within 1 sec after the thermistor (TH1,
TH2) has detected 100°C.
(TH1) detection temperature reaches 60°C, the
first thermister does not reach 70°C for 200 ms.
(TH1) detection temperature reaches 70°C, the
first thermister does not reach 80°C for 200 ms.
(TH1) detection temperature reaches 80°C, the
first thermister does not reach 90°C for 200 ms.
(TH1) detection temperature reaches 90°C, the
first thermister does not reach 95°C for 200 ms.
10-109