Autocompensator Mechanism Service Check; Bin Full Sensor Service Check - Lexmark C540 Service Manual

Autocompensator mechanism service check

Step Questions / actions
1 Turn the printer off, and then remove the rear
shield. See "Rear shield removal" on
page 4-11. Check the cable at JSP1 on the
controller board for proper connection.
Is the cable properly connected?
2 Did the printer function correctly after
reconnecting the cables?
3 Turn the printer on, and then verify the
following approximate values at JSP1:
Pin Value
2 +24 V dc
4 +24 V dc
6 Ground
7 Ground
8 Ground
Are the values approximately correct?

Bin full sensor service check

Step Questions / actions
1 Is the bin full sensor dislodged or damaged?
2
Does the flag rotate freely and interrupt the
sensor beam when in normal position?
3 Turn the printer off, and remove the rear
shield. See "Rear shield removal" on
page 4-11. Turn the printer on, and then check
the values below at JBIN1:
Pin Value
1 > 0 V dc
2 +3.3 V dc beam blocked
3 Ground
Are the values correct?
JSP1
Pin Value
10 +5 V dc
13 Ground
15 +5 V dc
16 Ground
JBIN1
0 V dc unblocked
Yes
Go to step 3.
Problem resolved.
Replace the
autocompensator
mechanism. See
"Autocompensator
mechanism (ACM)
removal—standard tray"
on page 4-15.
Yes
Repair or replace the bin full
sensor. See "Bin full
sensor removal" on
page 4-18.
Go to step 3.
Problem resolved.
5025-2xx, 4xx
No
Properly connect the cables,
and POR the printer.
Go to step 2.
Go to step 3.
Replace the controller
board. See "Controller
board removal" on
page 4-19.
No
Go to step 2.
Reposition or replace the
flag.
Replace the controller
board. See "Controller
board removal" on
page 4-19.
2-27
Diagnostic information