Oki OKIFAX4550 Maintenance Manual page 252

Table 7.22.2 Action Items (Printer Unit-LCD Message)
No.
1 Check MCNT Board.
2 Check P2H/P6L Board cover open
switch, cover open switch connec-
tion.
Check MCNT Board.
3 Return to Section 7.1.
4 Replace the EP Unit. And clear
Drum Count, Section 6.3.
5 Check installation of MCNT board,
POWER SUPPLY UNIT board.
6 Check MCNT Board.
7 Check thermister (resistance of about
200 kilo ohms at room temperature
and about 140 kilo ohms at high
temperature), POWER SUPPLY
UNIT.
Note : 46F/R46 board for OKIFAX 4550/OKIOFFICE87 is shown as MCNT.
41309401TH Rev.4
ACTION ACTION
No.
8 Check connection between the PWU
and the fuser assembly,heater, ther-
mostat.
9 Check PWU.
10 Check Sensor-E, magnet-H, hopping
roller, pulse motor, MCNT Board, Ac-
tion of Idle gear-P.
11 Check Gear-T, MCNT Board,
P2H/P6L Board.
12 Check exit sensor lever, PWU
13 Check MCNT Board.
14 Check PWU, MCNT board.
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