CHAPTER 5 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).
Table 5-1-1
CHAPTER 5 SELF DIAGNOSIS
5-1
5
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)
• Thermistor (TH1, TH2;
short circuit)
• Triac (faulty)
• DC controller (faulty)
• Thermistor (TH1, TH2;
displacement, poor
contact, open circuit)
• Fixing heater (H1; open
circuit, crack)
• Thermal fuse (FU1;
malfunction)
• Triac (faulty)
• DC controller (faulty)
Description
• Beginning 1 second after the copy START key
is pressed, the main thermister (TH1) does
not reach 50°C for 200 ms.
• Beginning 2 second after the copy START key
is pressed, the main thermister (TH1) does
not reach 60°C for 200 ms.
• Beginning 4 second after the copy START key
is pressed, the main thermister (TH1) does
not reach 70°C for 200 ms.
• The detection temperature of the thermistor
(TH1) exceeds 250°C during copying operation.
• The detection temperature of the sub
thermistor (TH2) exceeds 260°C during
copying operation.
• The detection temperature of the thermistor
(TH1, TH2) rises 30°C over the specified
temperature during copying operation.
• The detection temperature of the thermistor
(TH1, TH2) rises 30°C over the specified
temperature during copying operation.
• The thermistor detects a rise in temperature of
40°C or more during standby.
• The temperature has increased over 100°C or
more within 1 sec after the thermistor (TH1,
TH2) has detected 100°C.
• Beginning 1 second after the main thermister
(TH1) detection temperature reaches 60°C, the
first thermister does not reach 70°C for 200 ms.
• Beginning 1 second after the main thermister
(TH1) detection temperature reaches 70°C, the
first thermister does not reach 80°C for 200 ms.
• Beginning 1 second after the main thermister
(TH1) detection temperature reaches 80°C, the
first thermister does not reach 90°C for 200 ms.
• Beginning 1 second after the main thermister
(TH1) detection temperature reaches 90°C, the
first thermister does not reach 95°C for 200 ms.
E000
E001
E002
Summary of Contents for NP6218
Page 5: ...1 1 1 CHAPTER 1 MAINTENANCE AND INSPECTION A Image Adjustment Basic Procedure ...
Page 6: ...1 2 B Periodical Servicing ...
Page 48: ...CHAPTER 3 ARRANGEMENT AND FUNCTIONS OF THE ELECTRICAL PARTS 3 2 A Sensors Figure 3 1 ...
Page 54: ...CHAPTER 3 ARRANGEMENT AND FUNCTIONS OF THE ELECTRICAL PARTS 3 8 D PCBs Figure 3 4 ...
Page 60: ...CHAPTER 3 ARRANGEMENT AND FUNCTIONS OF THE ELECTRICAL PARTS 3 14 ...
Page 76: ...CHAPTER 4 SERVICE MODE 4 16 ...
Page 84: ...CHAPTER 5 SELF DIAGNOSIS 5 8 ...
Page 87: ...A 3 C GENERAL CIRCUIT DIAGRAM not available ...
Page 88: ...A 4 ...