Post (Power-On Self Test)-Four Toner Sensors Not Connected Error Service Check - Lexmark C734dn Service Manual

920.09—POST (power-on self test)—Four toner sensors not connected error service
check
Step Questions / actions
Turn the printer off, and then remove the rear
1
frame cover. See
removal" on page
Reseat the cable in connector JHVPS1 (A).
Does the error clear?
Check the HVPS cable in connector JHVPS1
2
for pinch points and any other damage to the
cable or connector.
Is the cable damaged?
Remove the left cover. See
3
removal" on page
cable for correct connection to the HVPS
board, pinch points for the cable, or any other
damage.
Is the cable damaged?
Replace the HVPS board. See
4
power supply (HVPS) removal" on
page 4-108.
Does the error clear?
"Rear frame cover
4-33.
A
1 JBIN1 1 1 JFUSER1 1 JHVPS1 1 JBLW1 1
1 1 1
JSB1 JFAN1 JBOR1 JMIRR1 JOPP1
1
JCVR1 JCVR1
F5 JT1
F6
JLVPS2
1
JCARTP1 F7
J49
1
JCARTS1
1
1
JBOOT1
JUSB1
JDIMM1 1
F9
J10
JCARTS2
1
JTLBT1
JCARTP2 1 1
1 JTWF1 JFMUSB1
1
F10
1 JDVR1 JTDBUG1
1
JTPS1
1 J5
JOPT1
1 JDX1
1 F13 1
1 JFDS1
F12
JINT1 F14
1
JFDPCK1 JTRAY1 JSEC1 JPH1
1 1 JT12
"Left cover
4-21. Check the HVPS
"High-voltage
Yes
Problem resolved.
Replace the HVPS cable.
See
"High-voltage power
supply (HVPS) cable
removal" on page 4-110.
Replace the HVPS cable.
See
"High-voltage power
supply (HVPS) cable
removal" on page 4-110.
Problem resolved.
5026
No
Go to step 2.
Go to step 3.
Go to step 4.
Replace the system board.
See
"System board
removal" on page 4-153.
Diagnostic information
2-101
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