Lexmark Pro910 Series, Service Manual

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Service Manual
Lexmark Pro910 Series
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Service checks
System board service checks
Symptom Action
Dead machine Check pin 1 of the power supply connector J4 for approximately 30 V dc. If voltage is
incorrect, then replace the power supply. See
“Power supply removal” on page 4-4 .
If voltage is correct, then check all other cables on the system board. If the cables are
properly connected, then replace the system board. See
“System board removal”
on page 4-35 .
• Control panel buttons do
not work.
• Power light does not
come on.
Check the power supply. If the control panel buttons do not work or the power light
does not come on, then replace the print engine. See
“Print engine removal” on
page 4-50 .
Tank access sensor do not
work. If the tank access sensor does not work, then replace the system board. See
“System board removal” on page 4-35 .
End-of-forms sensors do not
work. If the end-of-forms sensors do not work, then replace the paper exit sensor. See
“Paper exit sensor removal” on page 4-45 .
CIS module assembly service checks
Symptom Action
The CIS assembly does not
move. If the CIS module assembly does not move, then check connector J5 on the system
board. If the cable is properly connected, then replace the system board. See
“System board removal” on page 4-35 . If the CIS module still does not move, then
replace the scanner unit. See “Scanner unit removal” on page 4-30 .
The CIS lamp does not
come on. If the CIS lamp does not come on as the scan bar is scanning, then check connector
J24 on the system board. If the cable is properly connected and the problem remains,
then replace the scanner unit. See
“Scanner unit removal” on page 4-30 .
Carrier service checks
Symptom Action
• The carrier slams
against the side frame.
• There is no carrier
movement.
• Check the encoder strip for proper installation.
• Check the carrier cable connections J21, J22, and J23 on the system board. If the
cables are connected, then make sure that the encoder strip is clean. Clean it with
a damp cotton swab. If the problem remains, then replace the system board. See
“System board removal” on page 4-35 .
• Check the carrier transport motor connector J1 on the system board. If it is
connected, then check for approximately 30 V dc on pins 1 and 2 or at the wire
connections located on the rear of the carrier transport motor. If voltage is
incorrect, then replace the system board. See
“System board removal” on
page 4-35 . If voltage is correct, then replace the print engine. See “Print engine
removal” on page 4-50 .
Carrier transport motor does
not operate. Check the carrier transport motor connector J1 on the system board. If the cables are
properly connected, then check for approximately 30 V dc on pins 1 and 2 or at the
wire connections located on the rear of the carrier transport motor. If voltage is
incorrect, then replace the system board. See
“System board removal” on
page 4-35 . If voltage is correct, then replace the print engine. See “Print engine
removal” on page 4-50 .