Oki ML421 Maintenance Manual page 103

No Yes
Replace Control Board.
Replace Transformer assy.
Remedied?
No Yes
End
Replace Power Supply Board.
42113901 Rev.2
Pin No. 20 19 18 17 16 15 14 13 12 11 10
Signal 50V
Oki Data CONFIDENTIAL
Control Board
CN2
20 1
9 8 7 4
0V +5V
3 1
0V +12V -8V
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