Fuse Check - Oki C711 Maintenance Manual

Oki Data CONFIDENTIAL

7.6 Fuse check

If the following error is issued, check the corresponding fuse of the CU/PU control board
and high voltage power supply board.
(Refer to Table 7-6.)
Table 7-6 Fuse error
Fuse Name Error Description
F4 Service call 918
(However, if the Duplex
unit is not installed, it
is the 2nd/3rd hopping
error.)
F3, F5 Power supply shut-down
(Not displayed on
operator panel)
CU/PU board
(PU area)
F7 ID UP/DOWN error.
Service call 142
F1 Cover open
F10 Service call 122
High voltage IP901 Cover open
power supply
board IP902 Service call 121
F15 • Service call 131 to 134
error
• All white page print
F12 Service call 131 to 134
error
CU/PU board
(CU area) F8 CENTRONICS interface
error
F9 CENTRONICS interface
error
F11 Host USB error
44205401TH Rev.1
Insert Point Resistance
Duplex, 2nd/3rd 24V
CU 3.3V, PU 5V
Belt motor, ID UP/DOWN motor,
Hopping clutch 24V
High voltage power supply board,
ID cooling fan, fuser fan 24V
Power supply fan, feed clutch,
MPT clutch, Fuse cut, feed motor
Less than
24V
1 ohm
High voltage 24V
High voltage 5V
LED HEAD 5V
LED HEAD 3.3V
CENTRONICS interface 5V
CENTRONICS interface 3.3V
Host USB 5V
7. Troubleshooting and repair procedure
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