43856301TH Rev.3
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Oki Data CONFIDENTIAL
7. Troubleshooting and repair procedure
If the following error is issued, check the corresponding fuse of the CU control board, PU
control board and high voltage power supply board.
(Refer to Table 7-6.)
Table 7-6 Fuse error
7.6 Fuse check
Fuse Name
Error Description
Insert Point
Resistance
PU board
F1
Service call 918
(However, if the Duplex
unit is not installed, it
is the 2nd/3rd hopping
error.)
Duplex, 2nd/3rd 24V
Less than
1 ohm
F2
Power supply shut-
down
PU board 5V
F3
ID UP/DOWN error.
Service call 142
Belt motor, ID UP/DOWN motor
24V
F4
Cover open
High voltage power supply
board, ID cooling fan, fuser fan
24V
F5
Service call 122
Power supply fan, feed
solenoid, feed motor 24V
High voltage
power supply
board
IP901
Cover open
High voltage 24V
IP902
Service call 121
High voltage 5V
CU board
F506
• Service call 131 to
134 error
• All white page print
LED HEAD 5V
F505
Service call 131 to 134
error
LED HEAD 3.3V
F501
HDD error
HDD 5V
F503
CENTRONIX interface
error
CENTRONIX interface 5V
F502
CENTRONIX interface
error
CENTRONIX interface 3.3V
F507
Host USB error
PCI 5V
