Sensors Test
This tests the operation of the cover sensor, pincharm sensor and media sensor.
Perform the Sensors test as follows:
1In service mode 1, press Sensors Test (Media Type Key).
2Activate the necessary sensor and check that the relevant LED status changes (ON/OFF). Refer to the following figure to check which LED is associated with which sensor.
3The test continuously repeats itself until you press the Cancel and Media Source keys.
If you are viewing information via the serial port, you will see output similar to the following:
5. - SENSORS TEST
This message only informs you that the test has started, and a message will not appear if the test passes or fails.
If the test fails, to resolve the problem, try one of the following:
1If the cover sensor fails, check that the front&panel assembly is correctly connected to the electronics module. Try replacing the front&panel assembly.
2If the Pincharm sensor fails, check that the sensor cable is correctly connected to the electronics module. Try replacing the pincharm sensor.
3If the Media sensor fails, check that the sensor cable is correctly connected to the electronics module. Try replacing the overdrive assembly (the media sensor is included as part of the overdrive assembly).
4Replace the Electronics Module ' page 8&13.
Only replace one component at a time and perform the test again before replacing another component Using this procedure you will be able to determine exactly which component failed
Service Tests | HP DesignJet 430, 450C and 455CA Printers |