Input Sensor Service Check - Lexmark C734 Service Manual

Input sensor service check

Step Questions / actions
1 Is the input sensor flag damaged?
2 1. Turn the printer off.
2. Remove the rear frame cover. See
frame cover removal" on page
3. Check the cable in connector JTRAY1 for
proper connection to the system board, for
pinch points, and any other damage to the
cable or connector.
A
Is the cable damaged?
3 1. Disconnect the cable in connector
JTRAY1.
2. Connect the cable from the new paper
pick assembly in the connector TRAY2.
3. Bring the printer up in Diagnostics Menu
(turn off the printer, press and hold
. and turn on the printer).
4. Select SENSOR TESTS, and press
Select (
5. Select Dynamic Sensors, and press
Select (
6. Select Input, and press Select (
7. Activate the input sensor.
pin 2 and ground, and POR the printer.
Did the input sensor change from Open to
Closed?
"Rear
4-33.
1 JBIN1 1 1 JFUSER1 JFUSER1 1 JHVPS1 1 JBLW1
JSB1 1 1 1
JFAN1 JBOR1 JMIRR1
1
JCVR1
F5
F6
JLVPS2
1
JCARTP1 F7
1 J49
JCARTS1
1
JBOOT1
JDIMM1
F9
JCARTS2
1
JTLBT1
JCARTP2 1 1
1 JTWF1
1
F10
JTDBUG1
1 JDVR1 1
JTPS1
1
J5
JOPT1 JOPT1
1 JDX1
1 F13 1
1
JFDS1 F12
JINT1
1 F14
JFDPCK1 JTRAY1 JSEC1
JPH1
1
1 JT12
).
).
).
Yes
Replace the paper pick
mechanism. See "Paper
pick mechanism
assembly removal" on
page 4-113.
Replace the paper pick
mechanism. See "Paper
pick mechanism
assembly removal" on
page 4-113.
1
JOPP1
JT1
1
JUSB1
1
J10
JFMUSB1
Replace the paper pick
mechanism. See "Paper
pick mechanism
assembly removal" on
page 4-113.
and
No
Go to step 2.
Go to step 3.
Replace the system board.
See "System board
removal" on page 4-139.
2-125
Diagnostic information
5026