Chapter 4 Troubleshooting; Self-Test; Initiating The Self-Test; Self-Test Standby - Epson TM-U200 series Technical Manual

C o n fid e n tia l
Chapter 4
Troubleshooting
Use the following to troubleshoot and repair the printer:

Self-test

This procedure tests control circuitry (other than serial communication and parallel
communication send / receive control) and the printer mechanism.
Troubleshooting flowchart
When the source of the problem is not clear, use the flowchart to find and replace a defective
component.
Troubleshooting table
Follow the steps outlined in this table to repair a defect whose symptoms are known.
Self-test

Initiating the Self-test

1. Insert a paper roll and a ribbon cassette in the printer, and close the printer cover.
2. Turn off the printer.
3. Turn on the printer while keeping the FEED button depressed. The self-test starts, and status
information is printed.

Self-test Standby

1. When status information printing is complete, the following is printed:
The PAPER OUT LED flashes alternately to indicate the standby condition.
2. Press the FEED button to continue the self-test.

Ending the Self-test

The printer prints "*** completed *** " and ends the self-test. The printer automatically becomes
ready to receive data after the self-test.
Rev. A
"Self-test printing. Please press paper FEED button."
TM-U200 Series (Type B) Technical Manual
Troubleshooting 4-1