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Service Tests and Utilities
4-24
HP DesignJets 1050C and 1055CM Printers Service Manual
7 If the test passes, then the following message will appear on the
front panel:
WARNING IF THIS TEST PASSES, DO NOT REPLACE THE DROP
DETECTOR.
If there is a problem with the Drop Detector then the following
message will appear on the front panel:
In this case, to resolve the problem, try the following:
1 Check that the Drop Detector Cable is NOT broken or damaged.
2 Check that the Drop Detector cable is correctly connected to the
Service Station Cable.
3 Check that the Service Station Cable is NOT broken or damaged.
4 Remove the Drop Detector and make sure that there are no
obstacles inside which are blocking the sensor.
5 Replace the Drop Detector Assembly ⇒ Page 8-10.
6 If the test continues to fail, replace the Electronics Module ⇒ Page
8-25.
WARNING Only replace one component at a time and try the Service Test
again before replacing another component. Using this procedure
you will be able to determine exactly which component failed.
DROP DETECTOR
BLOCKED DD: PASS
GHOST DROPS: PASS
DROP DETECTOR
Blocked DD: Fail
Code: 00XXXX:0000XX