IBM V03 Maintenance Information page 126

2. If an error message is displayed, go to T&D error messages and actions. The test completed successfully if
the display advances to the end of diagnostics message.
The test then loops back to T&D01.
Pressing End displays the following message:
........TEST & DIAGNOSTIC END........
3. Power off the printer to exit T&D mode.
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Chapter 2. Diagnostics