HP 450c Service Manual - Page 50

MediaĆAxis XĆAxis Test, LED J, Cancel and, Media Source, Media Load Button.

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MediaĆAxis (XĆAxis) Test The purpose of this test is to verify the operation of the components of the Media Axis. Perform the MediaĆAxis test as follows: 1 In service mode 1, press MediaĆAxis Test (Media Load Button). 2 The test will start and the drive roller rotates in steps, each equivalent to one swath advance. 3 If the test passes, the Glossy LED (LED J) will light up after the first cycle. If you are viewing information via the serial port, you will see output similar to the following: 3. - X-AXIS TEST Test Mode X-Axis Cycle: 92 pwm Test Mode X-Axis Cycle: 65 pwm Test Mode X-Axis Cycle: 66 pwm 4 If there is a shutdown, the Glossy LED (LED J) will start to flash after the first cycle. If you are viewing information via the serial port, you will see output similar to the following: 3. - X-AXIS TEST Test Mode X-Axis Cycle: 79 pwm Test Mode X-Axis Cycle: 115 pwm Test Mode X-Axis Cycle: 127 pwm Test Mode Error: 1 on X-axis test 5 The test continuously repeats itself until you press the Cancel and Media Source keys. 4-16 The test is continued on the next page. HP DesignJet 430, 450C and 455CA Printers Service Tests

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4-16
Service Tests
HP DesignJet 430, 450C and 455CA Printers
MediaĆAxis (XĆAxis) Test
The purpose of this test is to verify the operation of the components of the
Media Axis.
Perform the MediaĆAxis test as follows:
1
In service mode
1
, press
MediaĆAxis Test
(Media Load Button).
2
The test will start and the drive roller rotates in steps, each equivalent to
one swath advance.
3
If the test passes, the Glossy LED (
LED J
) will light up after the first cycle.
If you are viewing information via the serial port, you will see output
similar to the following:
3. - X-AXIS TEST
Test Mode X-Axis Cycle: 92 pwm
...............
Test Mode X-Axis Cycle: 65 pwm
Test Mode X-Axis Cycle: 66 pwm
4
If there is a shutdown, the Glossy LED (
LED J
) will start to flash after the
first cycle.
If you are viewing information via the serial port, you will see output
similar to the following:
3. - X-AXIS TEST
Test Mode X-Axis Cycle: 79 pwm
Test Mode X-Axis Cycle: 115 pwm
Test Mode X-Axis Cycle: 127 pwm
Test Mode Error: 1 on X-axis test
5
The test continuously repeats itself until you press the
Cancel and
Media Source
keys.
The test is continued on the next page.