Question about HP DesignJet 1050c plus InkJet Printer
This is a Power On Self Test (POST) error. It indicates a missing 24VDC. The probable cause is an over current condition from a motor (24 volts is used to drive motors). The power supply has circuitry that shuts it down in over current conditions to protect itself. There is probably a bind in a mechanical mechanism causing extra stress and over current in one of the motors. The motors are: carriage belt drive, paper drive, and service station motor. Remove the covers and move each mechanism manually to check for binds or broken parts. If nothing is found, replacing the motors is the next best bet. Replace them in this order: Carriage motor, Paper motor, Service station. If that does not cure the problem, replace the Power Supply and finally the Formatter Board. The manual can be downloaded from: www.lpscomputer.com/ec/manuals.htm and parts can be purchased at: http://www.lpscomputer.com/c-654-designjet-1050c-1055cm.aspx
Posted on Apr 16, 2010
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Posted on Jan 02, 2017
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Aug 13, 2015 | HP DesignJet 5500PS InkJet Printer
The Trailing Cable has been incorrectly connected OR the fuse in the Electronics Module has been burned.
Corrective Action: Turn the Printer OFF and disconnect the trailing cable. Check that the ends of the Trailing Cable are flat and are not damaged or bent. Reconnect the Trailing Cable correctly, making sure it is pushed in firmly. Do the resistance test. Power ON the Printer and check if the Error Code disappears. If the Error Code continues, replace the Main Logic Board
Note: The logic board is a direct replacement for the Designjet 1050C Plus and 1055CM Plus. If the plotter you are repairing is the Designjet 1050C (not Plus) you will also need to replace the memory and the firmware.
If you are repairing a Designjet 1055CM (not Plus) you will have to replace the Hard Disk Drive also. The firmware is identical for the 1050C Plus and 1055CM Plus
Note: The aerosol fan is not used in the Designjet 1050C Plus or 1055CM Plus. Coil the cable out of the way or completely remove the fan.
WARNING TAKE CARE WHEN CONNECTING THE TRAILING CABLE TO THE ELECTRONICS MODULE OR CARRIAGE. INCORRECT INSTALLATION WILL BURN THE FUSE IN THE ELECTRONICS MODULE, CAUSING THE COMPLETE FAILURE AND REPLACEMENT OF THE LOGIC BOARD. 100 OHMS OR HIGHER MUST BE SEEN AT THE TEST POINTS. CONSULT THE SERVICE MANUAL FOR CORRECT PROCEDURE.
Continuable and Non-Continuable Error Codes
Some of the Error Codes are continuable, which means you can press Enter on the front-panel and continue working with the Printer. Non-Continuable Error Codes do not allow you to continue working with the Printer, in this case power the Printer OFF and ON again and see if the System Error disappears. If the Error Code reappears, then the Printer requires service in order to resolve the problem.
System error codes are hexa-decimal based numbers generally caused by internal system errors. Only try one recommended action at a time and check if the error code has disappeared.
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