Oki ML490 Maintenance Manual page 105

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