Plotter Repair Service History — College Station, TX

Problem: HP DesignJet T2300 PostScript plotter was non-functional following a user-attempted printhead replacement. Cyan was missing from output, all remaining colors were faded, and the unit was stopping mid-job when ink ran low.

Solution: Technician reseated all printheads and ran calibration; cyan remained absent. Printhead cleaning returned a replace prompt for the magenta/cyan unit. After manual cleaning failed to restore cyan, all three HP 72 printheads (C9380A, C9383A, C9384A) were replaced. Print quality and PC-initiated plots

Problem: HP DesignJet Z3200 wide-format plotter producing faded output; general preventive maintenance also due.

Solution: Replaced gray printhead, cleaned remaining printheads, and lubricated the carriage rod. Output tested prior to departure; no callback received, confirming print quality restored.

Problem: HP DesignJet T3500 wide-format plotter was generating error codes, preventing normal operation.

Solution: Service call was cancelled prior to on-site technician dispatch; no repair was performed.

Problem: HP DesignJet 500 24" (C7769B) displayed 'Operation cannot be performed' error and refused to print. Sending a Windows test page caused the driver screen to flash repeatedly.

Solution: Identified the issue as a Microsoft Windows update known to affect certain printers and plotters. Coordinated with the customer's IT department to remove or replace the problematic update. The plotter returned to normal operation after the update was addressed.

Problem: HP DesignJet T1700ps would not recognize a newly customer-installed Matte Black/Yellow (MKY) print head; the printer had prompted for print head replacement.

Solution: Technician cleaned the print head seating area, oiled the carriage rail, and updated the firmware date code. The new MKY print head was confirmed defective — the original Matte Black/Yellow print head was reinstalled, and the printer returned to normal operation.

Problem: HP DesignJet Z6100ps 42" plotter in Bryan, TX displaying 'Paper Misaligned' error and producing a growling noise during carriage movement; roll media not feeding correctly.

Solution: Technician rebooted the unit and reloaded media. Audible growling isolated to carriage movement; inspection revealed the 42" carriage belt (Q1273-60228) had dry-rotted. Replacement with the Q1273-60228 / CQ109-67004 belt-and-tensioner assembly was recommended; call closed pending customer approval.

Problem: User reported a 63:10 error code - network interface error.

Solution: The technician updated the firmware, cleaned out the inside of the plotter, and lubed the rails. Upon further testing of the plotter the error code went away and the device began working to spec.

Problem: HP DesignJet T2300 MFP in Madisonville, TX presented a persistent Error 21:13, leaving the plotter non-functional and unable to complete diagnostic print jobs.

Solution: Technician cleaned and oiled the carriage rail, then replaced the Service Station (CH538-67040). After initial post-installation error recurrence, a second power cycle restored the printer to ready status. Diagnostic page and queued map print confirmed full functionality before closing the call.

Problem: HP DesignJet T730 wide-format plotter in Rockdale, TX reported carriage belt sticking during operation.

Solution: Technician powered on the T730 and observed the carriage moving freely until it engaged the cutter, which jammed approximately three-quarters through the cut cycle. Inspection revealed a broken gear in the cutter assembly; grease points and rail were clear of debris. Replaced the cutter assembly (pa

Problem: HP DesignJet Z3200 plotter in College Station reported sluggish, dragging print carriage movement causing noticeably slow output.

Solution: Inspection revealed a worn carriage belt assembly and tensioner. Both components were replaced, and the carriage rails were lubricated, restoring normal carriage speed and print throughput.

Problem: HP DesignJet T3500 eMFP in Brenham, TX displaying a persistent 79:04 error code regardless of whether the network cable was connected.

Solution: Firmware update did not clear the 79:04 error. A new formatter with riser card (B9E24-67029) and hard drive were installed; the printer then presented an 86:01 followed by a Scan Axis 11:10 error, pointing to the engine board. Replacing the engine board (interconnect board B9E24-67017 series) resolv