Post (Power-On Self Test)-Bad Printhead Nvram Data Error Service Check - Lexmark C734dn Service Manual

5026
Step Questions / actions
Lower the front access cover. Check the
3
transport cable for pinch points and any other
cable damage.
Is the cable damaged?
Replace the transfer module. See
4
module removal" on page
Does the error clear?
920.16—POST (power-on self test)—Bad printhead NVRAM data error service check
Step Questions / actions
Turn the printer off, and then remove the rear
1
frame cover. See
removal" on page
Reseat the large printhead cable in
connector (A).
A
Does the error clear?
Check the cable in connector JPH1 for pinch
2
points and any other damage to the cable or
connector.
Is the cable damaged?
Perform the printhead verification to check
3
whether the printhead replacement fixes the
problem. See
"Printhead verification" on
page 3-35.
POR the printer.
Did the error clear?
Service Manual
2-108
"Transfer
4-168.
"Rear frame cover
4-33.
1 JBIN1 1 1 JFUSER1 JHVPS1 1 1 JBLW1 JBLW1 1
1
JSB1 1 JFAN1 JBOR1 JMIRR1 1 JOPP1
1
JCVR1
F5
F6 JT1
JLVPS2
1
JCARTP1 F7
1 J49
JCARTS1
1
JBOOT1 1
JUSB1
1
JDIMM1
F9 J10
JCARTS2
1
JTLBT1
1
JCARTP2 1 JFMUSB1
1 JTWF1
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
Replace the transport
cable. See
"Transport
cable removal" on
page 4-170.
Problem resolved.
Yes
Problem resolved.
Replace the printhead. See
"Printhead removal,
installation, and
adjustment" on
page 4-135.
Replace the printhead. See
"Printhead removal,
installation, and
adjustment" on
page 4-135.
No
Go to step 4.
Replace the system board.
See
"System board
removal" on page 4-153.
No
Go to step 2.
Go to step 3.
Replace the system board.
See
"System board
removal" on page 4-153.
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