
HP Designjet T Series — Service Manual 3-21
Service Tests (Diagnostics)
The PWM StDev results must be between 0 and 500.
The PWM max results must be between 15000 and 20000.
22 If the results are correct, press OK to accept the results. If the results are not
correct, press Back/Cancel to reject the results and FAIL the test.
23 If you accept the results, the Front Panel shows the test complete display for a
few
seconds:
24 The Front Panel prompts you to shutdown the printer to complete the test.
25 Press any key to shutdown the printer.
3. Electronics Module
The Electronics Module test diagnoses Failures of the following components:
Main PCA components
Electronics Module to Carriage interfacing.
Print Mech PCA components.
Power Supply Unit voltages.
Diagnostic tests also need to be performed after removing or replacing
certain pr
inter components. If you have removed or replaced printer
components, check the
Service Calibration Guide to Removal and
Installation on page 6-5 to see which tests and calibrations you need to
perform.
Service Calibration Guide to Removal and Installation on page 6-
5.
Perform the Electronics Module test as follows:
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