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1-12 Troubleshooting
HP DesignJet CP Series Printers
7 Replace the Overdrive Assembly and the Clutch ' page 8-69.
D Explanation - For a unit fabricated before September of 1997 the
clutch could cause intermittent media jams. Refer to the applicable
Service Note. For a printer fabricated before July 1997 the linear
blade could be too high, causing media jams.
8 Check for missing/blocked starwheels or starwheel mount assemblies.
D Explanation - These parts can lead to media jams if missing or
blocked.
9 The Carriage is at the incorrect height in relation to the Drive Roller.
Perform the Refill Calibration ' page 5-9 and try to load the media
again.
D The refill station positioning must be checked afterwards since it is
affected. The refill station can be adjusted to accommodate the change
in Printhead Height. The specification for Printhead Height is 1.2 -
1.4mm. Printhead Heights higher than this can adversely affect print
quality.
What can I do if the Printer does not Power ON?
1 Check that the power cord is connected correctly.
2 Check that the Flash SIMM is installed correctly in the correct slot (the
first slot from the left) at the back of the Printer.
3 On the Main PCA, in the Electronics Module, there are other fuses that
are not controlled by the firmware so that, if they are burnt, they can
cause a no-power-up problem. It is recommended to check the
resistance of the motors in a no-power-up situation before
installing a new Electronics Module. If you have a short in one
motor, you will burn the new Electronics Module.
4 Try to disconnect all the cables, apart from the Front Panel Cable, from
the Electronics Module and then try to power ON the Printer again. If
nothing appears on the front-panel display, then replace the Electronics
Module ' page 8-6. If the Printer does Power On with the cables
disconnected, then the problem must be with another component of the
Printer. To find the faulty component, power OFF the Printer and
connect one of the cables and power ON again. Once the faulty
component is connected, it will not allow the Printer to power ON. This
component should then be replaced.
What can I do if the Line Sensor has Problems Detecting Media?
1 Excessive ink deposits on the drive-roller surface can fool the sensor by
reflecting the light. Clean the drive-roller ' page 9-3.