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Service Guide OJ2010
Chapter 4 Failure and Repair Analysis
4.8.03 Parallel Port Test
This test performs a wrap around test between the printer parallel port and the parallel port test connector.
This test requires a parallel port wrap plug.
Procedure
To run the test, follow this procedure.
1. Power
OFF
the unit.
2. Move the two pin jumper on connector J13 of the system board to the position shown below.
3. Install the parallel port wrap plug in the parallel port.
4. Power
ON
the printer.
5. The test will start.
6. The Power
ON
light should flash.
If the light does not flash, the test has failed.
7. To stop the test, power
OFF
the printer or unplug the printer.
8. Return the jumper to its original pin position.
Parallel Port Wrap Plug
Wire together the pins listed below.
Pins 1 and 12
Pins 2, 4, 6, 8, and 32
Pins 3, 5, 7, 9, and 10
Pins 13 and 31