HP 1050c Service Manual - Page 95

Service Tests and Utilities 3 Once the test is completed, the following message will appear on the front panel: PAPER AXIS Max PWM: XXX Avg PWM: XXX Max PWM (C): XXX Avg PWM (C): XXX 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. HP DesignJets 1050C and 1055CM Printers Service Manual 4-21