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4-14 Service Tests
HP DesignJet CP Series Printers
D04. Media Axis (X-axis)
The purpose of this test is to verify the operation of the components of the
Media Axis.
IF POSSIBLE ALWAYS PERFORM THIS TEST BEFORE
REPLACING THE X-AXIS MOTOR. IF THIS TEST PASSES, DO NOT
REPLACE THE X-AXIS ASSEMBLY.
Perform the Media Axis test as follows:
1 In the Diagnostics submenu, scroll to “D04 Media Axis” and press Enter.
Diagnostics
D04 Media Axis
2 While the test is being performed, a row of “***” will be displayed on the
front-panel.
3 If the test passes, the “D0400 OK” message is displayed on the
front-panel.
IF THIS TEST PASSES, DO NOT REPLACE THE X-AXIS ASSEMBLY.
4 If the test fails, an error message will be displayed on the front-panel.
The error messages are split into different areas depending on which
component failed.
X-axis Failure
If there is a problem with the components of the X-axis then the following
messages will appear:
D “D0401 Fail” - The Accuracy test has failed.
D “D0402 Fail” - The PWM test has failed (PWM too low).
D “D0403 Fail” - The PWM test has failed (PWM too high).
In these cases, Replace the X-axis Assembly ' page 8-66.
Mark Encoder Failure
If there is a problem with the Mark Encoder then the following message will
appear:
D “D0404 Fail” - Problem finding the Mark Encoder.
The test is continued on the next page.