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Service Guide ML520/521
Chapter 3 Maintenance & Disassembly
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 board 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.
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