
4–20
TROUBLESHOOTING MALFUNCTIONS
33
The pre-exposure lamp fails to turn ON.
34
The scanning lamp fails to turn ON.
Cause
Pre-exposure
lamp
DC controller
PCB
Step
1
Checks
Does the voltage between the
connector J107-A11 (+) and
the connector J107-A12 (–) on
the DC controller PCB change
from 0 V to 24 V when the
Copy Start key is pressed?
Yes/No
YES
NO
Action
Check the wiring from the DC
controller PCB to the pre-expo-
sure lamp; if normal, replace
the pre-exposure lamp.
Replace the DC controller
PCB.
Cause
Scanning lamp
Scanning lamp
installation
Connector
(poor contact)
DC controller
PCB
Composite
power supply
PCB
Step
1
2
3
4
Checks
Are both ends of the scanning
lamp black?
Is the scanning lamp installed
correctly?
Is the connection of the relay
connectors J20 and J95 nor-
mal? Further, is the connection
of the connector J802 on the
composite power supply PCB
normal?
Replace the DC controller
PCB. Is the problem corrected?
Yes/No
YES
NO
NO
YES
NO
Action
Replace the scanning lamp.
Re-install it.
Re-connect it.
End.
Replace the composite power
supply PCB.
Summary of Contents for GP215
Page 4: ......
Page 36: ......
Page 38: ...3 2 TROUBLESHOOTING IMAGE PROBLEMS ...
Page 39: ...3 3 TROUBLESHOOTING IMAGE PROBLEMS ...
Page 40: ...3 4 B Image Fault Samples ...
Page 80: ......
Page 92: ...6 6 ARRANGEMENT AND FUNCTIONS OF ELECTRICAL PARTS C Fans Figure 6 603 FM6 FM5 FM2 FM3 FM1 FM4 ...
Page 105: ...6 19 ARRANGEMENT AND FUNCTIONS OF ELECTRICAL PARTS 3 Composite Power Supply PCB Figure 6 610 ...
Page 204: ...C GENERAL CIRCUIT DIAGRAM General Circuit Diagram 1 4 A 3 ...
Page 205: ...General Circuit Diagram 2 4 A 4 ...
Page 206: ...General Circuit Diagram 3 4 A 5 ...
Page 207: ...General Circuit Diagram 4 4 A 6 ...