Lexmark Forms Printer 2400 Service Manual - Page 39

No Print or Abnormal Print Service Check, Operator Panel Service Check, Start/Stop, FormFeed

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24xx No Print or Abnormal Print Service Check FRU/Function 1 Logic Board 2 Interface Cable 3 Emulation Mode Action If the print test does not complete correctly, replace the logic board and reset the bidirectional print adjustment. See "Bidirectional Print Adjustment" on page 4-4. Check the connection and continuity of the interface cable. Enter the Setup Menu and be sure the printer is in the correct emulation mode for the computer, either IBM or Epson. Go to "Setup Mode" on page 1-2. Operator Panel Service Check If the operator panel is locked, only the Start/Stop, FormFeed, Tear Off and Load/UnLoad buttons are active. 24xx printers have a Padlock LED to indicate that the operator panel is locked. To lock or unlock the operator panel, turn the printer off and while holding the Load/Unload and Tractor buttons, turn the printer on. FRU 1 Operator Panel Cable 2 Operator Panel Action Disconnect the operator panel cable from the operator panel and the logic board, and verify continuity of the operator panel cable. Connect the operator panel to the logic board and be sure +5 V dc is present at connectors CN13-1 and CN13-3. Replace the operator panel cable, or the power cable, as necessary. If the problem remains, replace the operator panel. Diagnostic Information 2-21

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Diagnostic Information
2-21
24xx
No Print or Abnormal Print Service Check
Operator Panel Service Check
If the operator panel is locked, only the
Start/Stop
,
FormFeed
,
Tear
Off
and
Load/UnLoad
buttons are active. 24xx printers have a
Padlock LED to indicate that the operator panel is locked. To lock or
unlock the operator panel, turn the printer off and while holding the
Load/Unload
and
Tractor
buttons, turn the printer on.
FRU/Function
Action
1
Logic Board
If the print test does not complete correctly,
replace the logic board and reset the
bidirectional print adjustment. See
“Bidirectional Print Adjustment” on
page 4-4
.
2
Interface Cable
Check the connection and continuity of the
interface cable.
3
Emulation Mode
Enter the Setup Menu and be sure the printer
is in the correct emulation mode for the
computer, either IBM or Epson. Go to
“Setup
Mode” on page 1-2
.
FRU
Action
1
Operator Panel
Cable
Disconnect the operator panel cable from the
operator panel and the logic board, and verify
continuity of the operator panel cable.
Connect the operator panel to the logic board
and be sure +5 V dc is present at connectors
CN13-1 and CN13-3.
Replace the operator panel cable, or the power
cable, as necessary.
2
Operator Panel
If the problem remains, replace the operator
panel.