HP 1050c Service Manual - Page 83
DO NOT replace the Electronics Module. If the test PASSES - designjet printhead cleaning
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Service Tests and Utilities Carriage Test Failure If there is a problem with the Carriage and any related parts then the following message will appear on the front panel: ELECTRONIC SYSTEMS Possible Failure on: 1. Printhead CYMK 2. Trailing/Carriage 3. Electronics Module Code: 00XXXX:0000XX WARNING In this case, try one of the following: 1 Remove the Printheads and clean the Carriage and Printhead flex circuits using the Carriage Interconnect Wiper ⇒ Page 3-18. Reinstall the Printheads and try the test again. 2 If the test fails again, replace the Printheads. 3 Make sure that the Trailing Cable is connected correctly to the Carriage Assembly and to the Electronics Module. 4 Power OFF the Printer and connect a new Trailing Cable to the Carriage and the Electronics Module (without removing the old Trailing Cable from the Printer). Perform this test again and if the test FAILS, then DO NOT replace the trailing cable. If the test PASSES, replace the Trailing Cable ⇒ Page 8-39. 5 Power OFF the Printer and connect a new Carriage Assembly to the Trailing Cable (without removing the old Carriage Assembly from the Printer). Perform this test again and if the test FAILS, then DO NOT replace the Carriage Assembly. If the test PASSES, replace the Carriage Assembly ⇒ Page 8-44. 6 Power OFF the Printer and connect a new Electronics Module to the Trailing Cable (without removing the old Electronics Module from the Printer). Perform this test again and if the test FAILS, then DO NOT replace the Electronics Module. If the test PASSES, replace the Electronics Module ⇒ Page 8-25. 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. HP DesignJets 1050C and 1055CM Printers Service Manual 4-9