Lexmark X734DE - POST-Four Toner Sensor Not Connected Error Service Check

2-112 Service Manual
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920.09—POST—Four toner sensor not connected error service check
Step Questions / actions Yes No
1 Turn the printer off, and then remove the rear
frame cover. See “Rear frame cover
removal” on page 4-40.
Reseat the cable in connector JHVPS1.
Does the error clear?
Problem resolved. Go to step 2.
2
Check the HVPS cable in connector JHVPS1
for pinch points and any other damage to the
cable or connector.
Is the cable damaged?
Replace the HVPS cable.
See “High-voltage power
supply (HVPS) cable
removal” on page 4-122.
Go to step 3.
3
Remove the left cover. See “Left cover
removal” on page 4-23. Check all the toner
level sensor cables connected to the rear of
the HVPS.
Are any of the cables damaged?
Replace the damaged
cable.
Go to step 4.
4
Replace the HVPS board. See “High-voltage
power supply (HVPS) removal” on
page 4-120.
Does the error clear?
Problem resolved. Replace the system board.
See “System board
removal” on page 4-165.
1
JSB1
JBIN1
JFAN1
JFUSER1
JBOR1
JHVPS1
JMIRR1
JBLW1
JCVR1
JLVPS2
JCARTP1
JCARTS1
JCARTS2
JCARTP2
JDVR1
JTPS1
JOPT1
JFDS1
JINT1
JFDPCK1JTRAY1JSEC1
JDX1
JT12
J5
JDIMM1
JOPP1
JT1
JUSB1
JBOOT1
JFMUSB1
J49
JTWF1
JTDBUG1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
JTLBT1
JPH1
F5
F6
F7
F9
F10
F12
F13
F14
1
1
J10
1
1
A