4 Reconnect the attachment cables.

Turn on the printer for five seconds, then turn it off.

Check the signal interface board fuse for continuity.

Does the fuse have continuity?

No: Replace the attachment option, then turn to TAG 002: Check & Problem Resolution.

Yes: The signal interface board fuse was at fault. Turn to TAG 002: Check & Problem Resolution .

5 Turn on the printer.

Check for the indicated voltages: J73-1 should be +5 Vdc;

J73-3 should be +12 Vdc;

J73-4 should be -12 Vdc;

J73-6 should be +5 Vdc.

Are all voltages correct?

No: Replace the signal interface board. If this resolves the problem, turn to TAG 002: Check

&Problem Resolution. If this doesn’t resolve the problem, go to TAG 753: External Communications Malfunction, step 4.

Yes: Continue.

6 Turn off the printer and unplug the power cord.

Replace the external attachment option.

Reconnect all communication cables.

Run the failing job.

Has the problem been resolved?

No: The problem appears to be related to the host computer or the host interface cable. Correct the problem, then turn to TAG 002: Check & Problem Resolution.

Yes: The external attachment option was at fault. Turn to TAG 002: Check & Problem Resolution .

Troubleshooting Analysis Guide (TAGs)

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