Oki OKIFAX 5750 Service Manual page 700

Action Items (Printer Unit-LCD Message) Table 7.22.3
No. Action
1 Check MCNT (R76) Board
2 Check H10 Board
l
cover open switch
l
cover open switch connection
Check MCNT (R76) Board
3 Return to Section 7.1
4 Replace the EP Unit, and clear Drum Count, Section 6.3
5 Check installation of MCNT (R76) board, POWER SUPPLY UNIT board
6 Check MCNT (R76) Board
7 Check thermister (resistance of about 200 kilo ohms at room temperature
and about 140 kilo ohms at high temperature), POWER SUPPLY UNIT
8 Check connection between the PWU and the fuser assembly, heater,
thermostat
9 Check PWU
10 Check Sensor-E, magnet-H, hopping roller, pulse motor, MCNT (R76)
Board, Action of Idle gear-P
11 Check Gear-T, MCNT (R76) Board, H10 Board
12 Check exit sensor lever, PWU
13 Check MCNT (R76) Board
14 Check H10 Board, MCNT (R76) Board
Service Guide OKIFAX 5750/5950
Chapter 7 Troubleshooting
Page: 250