FrameMaker Ver.5.5E(PC) Di152/Di183 TROUBLESHOOTING
01.09.04
T-29
C0520: Abnormally high fusing temperature
Step
Check
Result
Action
4
Fusing Unit Interlock Switch (S2) is
operational.
<Check Procedure>
Check continuity across terminals
when the Fusing Unit Interlock
Switch (S2) is turned ON.
• Across S2-1A and S2-1B
• Across S2-2A and S2-2B
NO
• Change Fusing Unit Interlock
Switch (S2).
YES
• Change DC Power Supply (PU1).
5
Thermistor (TH1) is open-circuited.
<Check Procedure>
Check the resistance across CN15-2
and CN15-3 on the Fusing Unit side
with CN15 disconnected.
The Thermistor is open-circuited if
the resistance is infinity.
YES
• Change Thermistor (TH1).
6
The following voltages are supplied
from the Master Board (copier: PWB-
A).
<Check Procedure>
Check voltage across a Master Board
(copier: PWB-A) pin and GND when
the Power Switch is turned ON.
• Voltage across PJ10A-7 and GND
DC24 V when Fusing Heater Lamp
(H1) is OFF
DC0 V when Fusing Heater Lamp
(H1) is ON
• Voltage across PJ10A-10 and
GND
DC24 V when Fusing Heater Lamp
(H1) is OFF
DC0 V when Fusing Heater Lamp
(H1) is ON
NO
• Change Master Board (copier:
PWB-A).
Step
Check
Result
Action
1
Thermistor (TH1) is dirty.
YES
• Clean Thermistor (TH1).
2
Thermistor (TH1) is open-circuited.
<Check Procedure>
Check the resistance across CN15-2
and CN15-3 on the Fusing Unit side
with CN15 disconnected.
The Thermistor is open-circuited if
the resistance is infinity.
YES
• Change Thermistor (TH1).
NO
• Change Master Board (copier:
PWB-A).
Summary of Contents for D1531iD
Page 2: ...FrameMaker Ver5 5E PC Di152 Di183 GENERAL 01 08 27 GENERAL 14413 ...
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Page 16: ...FrameMaker Ver5 5E PC Di152 Di183 MECHANICAL ELECTRICAL 01 09 05 MECHANICAL ELECTRICAL 14413 ...
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Page 194: ...FrameMaker Ver 5 5E PC Di152 Di183 TROUBLESHOOTING 01 09 04 TROUBLESHOOTING 14390 ...
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