Oki ML490 Maintenance Manual - Page 105
No Yes, Replace Control Board., Replace Transformer Assy., Remedied?, Replace Power Supply Board.,
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No Yes Replace Control Board. Replace Transformer Assy. Remedied? No Yes End Replace Power Supply Board. Control Board CN2 20 1 Pin No. Signal 20 19 18 17 16 15 14 13 12 11 10 9 8 7 4 3 1 EP EL +50V +5V +12V -8V (0V) (0V) 42114101 Rev.1 105 /
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42114101
Rev.1
105 /
No Yes
Replace Control Board.
Replace Transformer Assy.
Remedied?
No Yes
End
Replace Power Supply Board.
Control Board
CN2
20
1
Pin No.
20
19
18 17
16
15
14
13
12
11 10
9
8
7
4
3
1
Signal
+50V
EP
+5V
EL
+12V
-8V
(0V)
(0V)