Post (Power-On Self Test)-24 V Power Supply Failure Error Service Check - Lexmark C734dn Service Manual

920.21—POST (power-on self test)—24 V power supply failure error service check
Step Questions / actions
Check the input voltage switch on the back of
1
the low-voltage power supply (LVPS).
Some LVPS FRU do not have switches and
switch automatically. If your does not have a
switch, go to step 2.
230
Is the voltage level (115/230) properly set?
Turn the printer off, and then remove the rear
2
frame cover. See
removal" on page
Reseat the cable in connector JLVPS2 (A).
A
Does the error clear?
Check the cable JLVPS2 for pinch points and
3
any other damage to the cable or connector.
Is the cable damaged?
A
"Rear frame cover
4-33.
1 JBIN1 1 1 JFUSER1 1 JHVPS1 1 JBLW1 1
JSB1 1 JFAN1 JBOR1 1 JMIRR1 1 JOPP1
1
JCVR1 JCVR1
F5 F6 JT1
JLVPS2
1
JCARTP1 F7
1 J49
JCARTS1
1
1
JBOOT1
JUSB1
1
JDIMM1
F9
J10
JCARTS2
1
JTLBT1
JCARTP2 1 1
1 JTWF1 JFMUSB1
1
F10
JTDBUG1
1 JDVR1 1
JTPS1
1
JOPT1 J5
1 JDX1 1
1 F13
1 JFDS1
F12
1 JINT1 F14
JFDPCK1 JTRAY1 JSEC1 JPH1
1 1 JT12
Yes
Go to step 2.
Problem resolved.
Replace the low-voltage
power supply. See
"Low-
voltage power supply
(LVPS) removal" on
page 4-112.
5026
No
Set switch for the proper
country voltage.
Go to step 3.
Go to step 4.
Diagnostic information
2-113
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