Oki Microline 520 Service Handbook page 130

3.2.08 Power Supply Assembly
1. Perform these procedures: 3.2.01 and 3.2.06.
2. Use a straight slot screwdriver to detach the claws from both sides of the cable clamp
(1).
3. Remove the cable clamp (2).
4. Detach the transformer cable from connector CN3 (3) of the control board (4).
5. Detach the cable from the connector (5) of the filter board (6).
6. Use a straight slot screwdriver to free the transformer from the holding clamp (A),
position the screwdriver in the direction of the arrow (7) twist the screwdriver while
pushing the transformer (8) towards the control board .
7. Lift and remove the transformer assembly.
8. Remove the screw (9) from the ground wire of the filter board.
9. Use a straight slot screwdriver to detach the claw (10), tilt the filter baord upward,
then work the AC inlet and the AC switch free.
10. Lift and remove the filter board assembly.
NOTE:
When installing, verify that the AC inlet and AC switch are oriented correctly.
P/N 56412401 Transformer: 120 V ML520
P/N 56412402 Transformer: 120 V ML521
P/N 55073201 PCB: Filter 120 V
P/N 50707501 Clamp: Cord
P/N 56306201 Fuse: 1A 250V (Filter Brd 220V)
P/N 56306101 Fuse: 2.5A 125V (Filter Board)
Maintenance
RSPL
RSPL
RSPL
RSPL
Option RSPL
RSPL
3 - 18 Microline 520/521 Service Handbook
520 B.2.03
521 B.2.03
Both B.2.03
Both B.2.03
Both B.2.03
Both B.2.03
P/N 59257803