HP 1055CMHP - Manual (Page 95)

Service Tests and Utilities
4-21 HP DesignJets 1050C and 1055CM Printers Service Manual
3 Once the test is completed, the following message will appear on the
front panel:
If the values of the Max. PWM is less than 95 and the Avg. PWM is
less than 85, then the test has passed.
If the values of the Max. PWM is more than 95 and the Avg. PWM is
more than 85, then the test has failed. To resolve the problem, try
the following:
1 Open the Window and check for any visible obstacles restricting the
movement of the Drive Roller or the Overdrive Assembly.
2 Replace the Paper-Axis Motor ⇒ Page 8-12.
If the values of the Max. PWM is less than 95 and the Avg. PWM is
less than 85, but the values of the Max. PWM(C) is more than 100
and the Avg. PWM(C) is more than 90 then the test has failed. To
resolve the problem, try the following:
1 Replace the Overdrive Assembly
⇒
Page 8-64.
PAPER AXIS
Max PWM: XXX
Avg PWM: XXX
Max PWM (C): XXX
Avg PWM (C): XXX