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Diagnostic information 2-25

5025-2xx, 4xx

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925.01—Fan error service check

Step Questions / actions Yes No

1 Turn the printer off, and remove the rear

shield. See “Top cover assembly removal”

on page 4-13. Check the fan cable at JFAN1

for the following values:

Are the measured values correct?

Replace the top cover

(which includes the fan).

See “Top cover assembly

removal” on page 4-13.

Replace the controller

board. See “Controller

board removal” on

page 4-20.

JFAN1

Pin Value

1 +3.3 V dc

2 Ground

3 0 (fan off)

Lexmark C543dn Service Manual

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