HP 2000CP 2500CP - Manual (Page 97)

Service Tests 4-11 HP DesignJet CP Series Printers
The test is continued on the next page.
8 If the test fails, a message similar to the following is displayed on the
front-panel.
Green Fail V: 8.0
Blue Fail V: 11.0 T: 0
Refer to the following table in order to know the limits for value V
(Saturated Input Voltage) for the Green and Blue LEDs:
V
LED
Minimum Maximum
Green 7 10
Blue 7 12
If the test fails to resolve the problem, try one of the following:
1 The lens cover, which is installed on the line sensor, is dirty. Replace
the lens cover
' Users Guide, Chapter 10 (Lens Maintenance).
2 Make sure that the Mark Encoder on the Drive Roller is clean.
3 Perform the Electronics test
' page 4-7.
4 Check if the Media used is suitable for the printer.
5 Check if the Line Sensor is installed and connected correctly.
6 If the problem continues, replace the Carriage Assembly
' page 8-42.