Lexmark C540 Service Manual page 88

5025-2xx, 4xx
Step Questions / actions
5 Turn the printer off, and remove the rear
shield. See "Rear shield removal" on
page 4-11. Disconnect the cable at JTRAY1
connector on the controller board. Turn the
printer on, and measure the values below:
Pin
Are the values approximately correct?
6 Test the continuity in the cable. See
present sensor removal" on page 4-57
access both ends of the cable.
Is the cable damaged?
2-54
Service Manual
JTRAY1
Value
1 +5 V dc
2 +5 V dc
3 Ground
"Tray
to
Yes
Go to step 6.
Replace the cable
(Miscellaneous cables
FRU).
No
Replace the controller
board. See "Controller
board removal" on
page 4-19.
Contact the next level of
support.