44 Troubleshooting; Media Axis Test - HP DesignJet 250C Service Manual

Media Axis Test

This tests the operation of the media axis motor, encoder and gears.
1 In service mode 1, press
The drive roller rotates in steps, each equivalent to one swath advance.
Status. The LED turns on (steady) if the media axis test has not found an error.
Film
If the test fails, the
Film
Output to the Serial Port (Viewing Output ' 8-36)
Maximum PWM:
2 The test continuously repeats itself until you
press the key.
Shift

8 44 Troubleshooting

.
Media-Axis Test
LED flashes.
OK
The maximum PWM for each cycle.
A typical media-axis PWM is 52. The maximum allowed is 65.
Media-Axis
Failed
C4699 90000
Test
Shift