G147 5-120 SM
Follow this procedure to execute detailed self-diagnosis manually.
1. Switch off the printer.
2. Press and hold down the [On line] and [#Enter] buttons together, then switch on
the printer.
3. Release the buttons when you see:
DIAGNOSE
0100
4. The number will change automatically as the self-diagnostic test runs. After about
30 seconds, the initial display returns and a self-diagnostic report prints.
5. A report like the one below is printed every time a detailed self-diagnostic test is
executed, whether errors were detected or not.
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