Lexmark P122 Photo Jetprinter, Руководство по обслуживанию

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Diagnostic Information
2-7
4102-P01
Operator Panel Button Service Check
LCD Assembly Display Service Check
Parts / FRUs Action
1 Buttons
System Board If the LCD display is OK, but the buttons do not
function, run the
“Button Test” on page 3-2
. If
any of the buttons fail, replace the top cover/
buttons/key PCB w/label assembly. If the symptom
remains, replace the system board.
Parts / FRUs Action
1 LCD Assembly
System Board If the LCD assembly is blank and the printer
completes POST, check the system board cable
connections. Check for a voltage reading of
approxi4 V dc on pin 15 at connector
J631. If the voltage is correct, replace the LCD
assembly. If the voltage is incorrect, replace the
system board.
If all diamonds are displayed after the printer
completes POST, check the LCD assembly cable
for continuity and replace the LCD assembly if
necessary. Unplug power supply to the machine
and replug. If diamonds remain, replace the
system board.
Run the
“LCD Test,” on page 3-2
. If the test
does not show all pels, replace the LCD assembly.
Service.bk Page 7 Tuesday, February 13, 2001 2:40 PM