Lexmark C540n Service Manual page 190

5025-2xx, 4xx
Installation notes:
CAUTION
After disconnecting the high-voltage power cable from the controller board, always check that
the HVPS connection was not loosened. Make this check anytime you are working near the
HVPS cable.
The following procedures apply to installing the new HVPS board.
Note: It is recommended that the cable be attached to the HVPS before inserting the HVPS. Use a spring
hook to pull the cable through the opening at the back as the HVPS is carefully slid into position.
Insert the spring end of the new HVPS board while compressing the spring as shown.
a.
Slide the HVPS into position while holding its sides as shown. Do not let the card flex and touch the
b.
cage.
Service Manual
4-42
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