The printer continuously rejects printheads
To resolve printhead rejection problems, do the following.
1. Clean the flex contacts on the Printhead and in the Carriage Assembly using the Carriage
Interconnect Wiper (see
Carriage Interconnect Wiper on page 87) and try again.
2. If all the Printheads are rejected (for each Printhead, the status message on the Front Panel does
not show 'OK') then perform the Carriage Assembly Test
Carriage Assembly test
on page 95..
A new maintenance cartridge is incorrectly detected
as ‘used’
This can occur if the printer has detected the previous Maintenance Cartridge was nearly full, and
when a new Maintenance Cartridge is installed the Front Panel displays an error that the cartridge is
‘used’. To resolve the problem, manually reset the counter of the Maintenance Cartridge
Reset Life
Counters on page 112.
Cover sensors are not working
To resolve cover sensor problems, do the following.
1. Check that the cable for the faulty sensor is not damaged and is connected correctly.
2. Replace the faulty sensor.
The Line Sensor has problems detecting paper
To resolve Line Sensor paper detection problems, do the following.
1. Check the type of paper that is being used: the Line sensor may have problems detecting
transparent paper or some types of Non-HP paper. Try loading white HP paper into the printer
and check whether the Line Sensor detects it.
2. Excessive ink deposits on the Platen surface can fool the sensor by reflecting the light. Clean the
Center Platen.
3. Clean the Encoder Strip
See Clean the Encoder Strip on page 467.
4. The Line Sensor is not calibrated correctly. Perform the Line Sensor Calibration
See Line Sensor
calibration on page 129.
5. The Line Sensor is damaged or faulty. Replace the Line Sensor
See Line Sensor Assembly
on page 298.
How to remove the Left Hub when the actuator is
broken
You need a standard 90º Torx/Allen key(Torx T10 or Allen 2.5).
10 Chapter 2 Troubleshooting ENWW
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