
17
The copy is completely blank.
3–19
TROUBLESHOOTING IMAGE PROBLEMS
Cause
Developing
assembly (lock-
ing)
Developing
assembly drive
assembly
Developing
assembly
Transfer charg-
ing assembly
Transfer high-
voltage cord
DC controller
PCB
Composite
power supply
PCB
Power supply to
CCD unit
Laser unit,
Image proces-
sor PCB
Drum unit
Step
1
2
3
4
5
6
7
8
9
10
11
Checks
Is the developing assembly
locked against the photosensi-
tive drum during copying?
Is the developing assembly
rotating during copying?
Is toner present inside the
developing assembly toner sen-
sor assembly?
Execute test printing using ‘L-
TEST1–7’ in service mode
(*4*). Is the image on the pho-
tosensitive drum normal?
Is the transfer charging assem-
bly fully inserted?
Does leakage occur in the
transfer charging assembly?
Is there an open circuit or poor
contact on the transfer high-
voltage cord? (The cord is the
one from the transformer 502
on the composite power supply
PCB.)
Replace the DC controller
PCB. Is the problem corrected?
Replace the composite power
supply PCB. Is the problem
corrected?
Is the voltage of the supply
power to the CCD unit (analog
processor PCB) as rated?
Remove the developing assem-
bly, and make a solid black
copy. At this time, is a laser
beam hitting the photosensitive
drum?
Yes/No
NO
NO
NO
NO
NO
YES
YES
YES
YES
NO
NO
YES
Action
Check the locking mechanism
of the developing assembly.
Check the drive system of the
developing assembly.
See “The ADD TONER mes-
sage fails to turn ON.”
Go to step 11.
Insert it securely.
Check the transfer charging
assembly.
Re-connect it; or, replace the
transfer high-voltage cord.
End.
End.
1. Check the power supply
harness between the CCD
unit and the composite
power supply PCB; if nor-
mal, replace the CCD unit.
2. Check the composite power
supply PCB.
1. Replace the laser unit.
2. Replace the image proces-
sor PCB.
Replace the drum unit.
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 ...