Oki B 4100 Maintenance Manual page 328

No.
1 Check MCNT Board.
2 Check POWER SUPPLY UNIT.
cover open switch,
cover open switch connection.
Check MCNT Board.
3 Return to Section 7.2.
4 Replace the ID Unit. And clear
Drum Count, Selection 6.3.
5 Check installation of MCNT board,
POWER SUPPLY UNIT board.
6
Check MCNT Board.
7 Check FAN motor, MCNT Board.
8 Check FAN motor, MCNT Board,
POWER SUPPLY UNIT.
9 Check thermister (resistance of about
100 kilo ohms at room temperature
and about 1.5 kilo ohms at high
temperature), POWER SUPPLY
UNIT.
Note: M17, M17-2, M17-3, and M17-4 board for OKIFAX 5000 series are shown as MCNT.
40055101TH Rev.4
Table 7.2.22.2 Action Items (Printer Unit-LCD Message)
ACTION ACTION
No.
10 Check connection between the PWU
and the fuser assembly,
heater, thermostat.
11 Check PWU.
12 Check inlet sensor lever,
hopping roller, resist motor,
MCNT Board, cover setting state.
Check cover setting state,
13
drum motor, drum motor gear,
MCNT Board.
Check exit sensor lever,
14
cover setting state, PWU
Check MCNT Board,.
15
Check paper sensor lever,
16
PWU, MCNT board.
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