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Service Guide PM3410
Chapter 4 Failure & Repair Analysis
4.8.03 Serial Interface Diagnostic
General Information
The Serial Interface Diagnostic is used to verify the proper operation of the serial port and its associated
circuitry.
Procedure
To perform the Serial Interface Diagnostic, follow this procedure.
1. Verify that continuous feed paper is installed.
2. Verify that the ribbon is correctly installed.
3. Verify that the width of the installed paper matches the paper width menu setting.
4. Select the serial interface on the interface board.
5. Place a DB-25P Loopback Test Connector on the serial port. Refer to the diagram for the correct
configuration.
6. Press PRINT QUALITY and CHARACTER PITCH at the same time to place the printer in Menu Mode.
When in Menu Mode, the functions printed
below
the operator panels switches are active.
7. Press GROUP until Serial I/F prints.
8. Press ITEM until Diagnostic Test prints.
Summary of Contents for Pacemark 3410
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