Oki B4100 - Manual (Page 278)

40055101TH Rev.4 278 /
Table 7.1.22.2 Action Items (Printer Unit-LCD Message)
No. ACTION No. ACTION
Check MCNT Board. 1
Check PWU-HV Board
cover open switch,
cover open switch connection.
Check MCNT Board.
2
Return to Section 7.1. 3
Replace the EP Unit. And clear
Drum Count, Section 6.3. 4
Check installation of MCNT board,
POWER SUPPLY UNIT board. 5
Check PWU.
6
7 Check thermister (resistance of about
200 kilo ohms at room temperature
and about 140 kilo ohms at high
temperature), POWER SUPPLY
UNIT.
Check connection between the PWU
and the fuser assembly,
heater, thermostat.
8
9
Check MCNT Board.
Check Sensor-E, magnet-H,
hopping roller, pulse motor,
MCNT Board, Action of Idle gear-P.
10
Check Gear-T,
MCNT Board, PWU-HV Board.
11
Check exit sensor lever,
PWU
12
Check MCNT Board. 13
Check PWU, MCNT board. 14
Note: R44 board for OKIFAX 4100/OKIOFFICE44 is shown as MCNT.