Plotter Repair Service History — Anaheim, CA

Problem: HP DesignJet T730 wide-format plotter not recognizing loaded paper.

Solution: Technician found a zip tie lodged inside the unit obstructing the paper sensor. Removed the obstruction, confirmed all sensor components were undamaged, cleaned the assembly, and tested to verify correct paper detection.

Problem: HP DesignJet Z3200 Photo 44" (Q6721B) brought in for routine maintenance after heavy use over the prior year.

Solution: Oiled carriage rod, inspected belt and carriage clips, reviewed error log. Left-side spittoon pad (Q5669-67049) and right-side service station (Q6718-67025) were saturated with used ink and required replacement. Stripped allen screw on the old service station required filing through the post and ext

Problem: HP DesignJet 510 plotter reported error code 81:01, indicating a printhead or ink system fault.

Solution: Diagnosed error 81:01 on HP DesignJet 510. Ordered replacement printheads — C4810A, C4811A, C4812A, and C4813A — and installed to resolve the fault.

Problem: Customer requested a new 24" HP DesignJet T120 plotter to replace aging equipment at their Costa Mesa, CA location.

Solution: New HP DesignJet T120 24" unit was procured and delivered to the customer. The existing HP DesignJet T2300 eMFP was flagged for pickup and recycling upon delivery confirmation.

Problem: HP DesignJet T830 plotter in Placentia, CA was not properly cutting media, requiring staff to cut paper by hand. The cutter assembly (CQ890-67108) was worn from approximately three years of heavy use.

Solution: Replaced the cutter assembly (CQ890-67108), oiled the carriage rail, then cleaned and tested the plotter. Confirmed proper automatic media cutting restored after installation.

Problem: HP DesignJet T520 36" (CQ893A) prompted operator to replace Maintenance Kit 2; service station inspection and diagnosis requested.

Solution: Technician cleaned the service station, reset the main kit message to restore operation, then sourced and installed a replacement service station (CQ890-67045) and performed a print-quality maintenance test.

Problem: HP DesignJet T520 36" reported error code B87E711E, rendering the plotter inoperable.

Solution: Diagnosed error code B87E711E on the HP DesignJet T520 36". Replaced the main board kit and tested the unit to confirm full functionality restored.

Problem: Customer required a new 24-inch wide-format plotter for their Ontario, CA location.

Solution: HP DesignJet T250 24-inch plotter sourced and shipped to the customer's location.

Problem: HP DesignJet T830 displayed a persistent 'Load Paper' error. Paper advanced past the first path sensor but failed after the carriage pass. The service station was also saturated with ink.

Solution: Replaced the carriage line sensor, out-of-paper sensor, and service station. Excessive black ink output persisted, prompting replacement of the printhead kit, black ink cartridge, and prime pump. Plotter returned to print operation. Unresolved network connectivity was confirmed to be infrastructure-

Problem: HP DesignJet T1300 44" (CR652A) presented with gradual print fading, a persistent 'Replace PK Cartridge' expired message, and printhead errors across multiple heads.

Solution: Assessed printhead statuses: G-PK and MK-Y cleared; M-C flagged poor IQ. Replaced PK ink cartridge, then installed new C9380A (G-PK), C9383A (M-C), and C9384A (MK-Y) printheads. Cleaned the machine and confirmed full operation.

Problem: HP DesignJet T1100ps reported recurring media jams accompanied by intermittent error 86:01 scan-axis failures.

Solution: Replaced the scan axis motor and tensioner, cleaned the encoder strip, and lubricated the carriage rod. Advised the customer that frequent voltage drops from a shared line conditioner were triggering the 86:01 failures; recommended relocating the plotter to a dedicated outlet to prevent recurrence.

Problem: HP DesignJet 500ps 42" plotter throwing error 11:11, indicating a trailing cable fault affecting carriage communication.

Solution: Replaced the trailing cable and oiled the carriage rod. Ink tube assembly was detached to access the trailing cable, then secured back to the carriage. Pre-existing broken plastic on the ink tube assembly — not an orderable component — was reinforced and confirmed functional.