Service History — San Diego, CA — Page 3

Problem: Customer in Escondido, CA required a new monochrome laser printer to replace existing equipment at their location.

Solution: Sourced and fulfilled a new Lexmark MS821dn monochrome laser printer. Unit was shipped directly to the customer site and delivered within the quoted 2–3 day window.

Problem: Lexmark MC3426 laser printer in Oceanside, CA reported poor print quality due to a leaking cyan toner cartridge.

Solution: Technician inspected the Lexmark MC3426 (1,440 page count), found a defective cyan toner cartridge causing interior contamination. Cleaned the interior and replaced the toner cartridge.

Problem: SATO thermal printer at a Chula Vista facility was due for scheduled weekly preventive maintenance.

Solution: Technician performed weekly preventive maintenance on the SATO thermal printer, inspecting and servicing components per the established PM protocol.

Problem: Customer in El Cajon requested a new Lexmark MS821dn laser printer with two additional paper trays for their location.

Solution: Sourced and procured a Lexmark MS821dn along with two optional paper trays. Upon receipt, the unit and all trays were installed and tested. Printer was then delivered to the customer's specified location.

Problem: A Toshiba B-SX5T Horticulture Series thermal printer in San Diego required scheduled preventive maintenance service.

Solution: Technician performed PM-6 level preventive maintenance on the Toshiba B-SX5T Horticulture Series thermal printer, completing a full cleaning cycle and functional test to restore the unit to operating condition.

Problem: HP Color LaserJet MFP 477 producing a recurring stripe across printed pages.

Solution: Diagnosed stripe defect on the HP CLJMFP 477 (page count 43,044). Faulty toner cartridge identified as the root cause. Customer was advised to procure a replacement toner cartridge; follow-up installation scheduled for the following week.

Problem: HP Color LaserJet M750 producing lines on printed output. Customer had already replaced toner cartridges, but lines persisted across all print jobs.

Solution: Diagnosed lines to a failing transfer belt (at 10% remaining life) and a full toner collection unit. Replaced the transfer kit (CE516A) and toner collection unit (CE980A) with HP OEM parts, restoring clean print output.

Problem: Zebra GX430t thermal printer in National City, CA was due for scheduled preventive maintenance as part of an ongoing multi-unit service plan.

Solution: Performed preventive maintenance on the Zebra GX430t at 745,500 inches of use. Cleaned internal components and reconfigured printer settings to restore optimal print performance.

Problem: Zebra 105SL thermal printer in La Mesa reached end of serviceable life and was designated for decommission.

Solution: Technician performed final parts recovery on the Zebra 105SL, removing all salvageable components before the unit was disposed of.

Problem: A Sato CL4NX Plus thermal printer in El Centro was due for its third scheduled preventive maintenance visit in a five-part service cycle.

Solution: Technician performed scheduled PM service on the Sato CL4NX Plus (203 dpi). Unit was thoroughly cleaned, inspected, and tested. Printer confirmed operational and cleared for return to service.

Problem: Xerox WorkCentre 6515DN MFP in Santee, CA was producing vertical lines along the sides of printed pages.

Solution: Diagnosed fault to a defective Transfer Belt Assembly (part #607K00932). Replaced the transfer belt, cleaned the printer, and confirmed the image defect was eliminated during test prints.

Problem: Intermec PX6I thermal printer in Poway, CA was not printing on the bottom portion of labels.

Solution: Technician removed tape residue adhered to the printhead, cleaned the unit thoroughly, and tested print quality across the full label surface, confirming consistent output before closing the call.

Problem: Zebra GX430t thermal printer at Solana Beach facility was due for its second scheduled preventive maintenance visit.

Solution: Performed scheduled PM on Zebra GX430t. Cleaned internal components and verified printer configuration to manufacturer specifications.

Problem: A Zebra S4M thermal printer at an Escondido facility was due for scheduled preventive maintenance as part of a multi-unit service cycle.

Solution: Technician performed preventive maintenance on the Zebra S4M (300 dpi, 4" print width, config S4M00-3001-0100T), cleaning and testing the unit thoroughly. No parts replacement was required; printer was returned to service in full working order.

Problem: Zebra ZT411 203 dpi thermal printer presented with a thin blank vertical line in printed output, indicating a failing printhead.

Solution: Performed quarterly PM including full cleaning. Replaced the printhead and platen roller. Initial replacement printhead could not be adjusted via tension to produce acceptable prints; original printhead reinstalled at half tension confirmed the defect. A warranty replacement printhead (P1058930-009,

Problem: HP DesignJet T730 plotter reported failing to initialize.

Solution: Service call was scheduled but could not be completed; no technician reached the site. The customer was notified and the call was closed.

Problem: Lexmark MS810 laser printer reported recurring paper jams throughout the paper path.

Solution: Performed major cleaning of the paper path, removing accumulated grease and debris. Installed a maintenance kit (part 40X8420) and a replacement fuser to restore reliable operation.

Problem: Zebra 220xiII thermal printer in Oceanside, CA would not feed labels or ribbon. On power-up, an audible electrical zapping sound was noted from the power supply.

Solution: Technician inspected drive belt and gears, confirming both were intact. The zapping sound indicated a failing power supply; no service manual was available for this legacy unit. Customer elected to retire the printer and requested a replacement quote for the Zebra 220Xi4 in 203 dpi (220-801-00000) a

Problem: HP Color LaserJet MFP M680 reported error code 99.09.67, indicating a hard drive fault. Output also showed lines worsening across multiple prints, pointing to a failing transfer kit.

Solution: Replaced the internal hard drive and reloaded firmware to resolve the 99.09.67 error. Installed an OEM CE249A transfer kit and CE265A toner collection unit to eliminate print-line defects. Tested the unit after all repairs were completed.

Problem: Customer requested a spare printhead for a Sato M10e thermal printer to keep on hand for the wrap line.

Solution: Replacement printhead sourced and ordered for the Sato M10e, along with Sato cleaning wipes for preventive maintenance stock. Part delivered to the wrap line office as a spare unit.

Problem: Zebra ZT610 300 dpi thermal transfer printer displaying persistent 'Media Out / Load Media' error.

Solution: Diagnosed incorrect media and sensor settings on the ZT610. Configured media type to Gap/Notch and Thermal Transfer, adjusted media settings, and performed sensor calibration. On a follow-up visit, replaced the printhead (P1083320-011) and platen roller (P1083320-032). Unit tested and returned to se

Problem: Zebra ZT410 (ZT41042-T01A000Z) in La Mesa required a platen roller replacement as part of a scheduled preventive maintenance visit.

Solution: Replaced the platen roller (P1058930-080) on the Zebra ZT410 and tested the unit to confirm proper operation.

Problem: HP Color LaserJet Pro M452dn in Poway, CA presented with a paper jam the customer was unable to clear.

Solution: Inspection revealed multiple sheets wrapped around the fuser, causing fuser damage. Given the extent of the damage, the customer opted to replace the unit. The damaged printer was removed from the site and replaced with a new HP Color LaserJet Pro M454dn, configured to the same IP address as the pre

Problem: HP LaserJet P3005d producing loud noise during operation.

Solution: Noise traced to the fuser assembly. Unit had surpassed 500K pages and required multiple components, including a replacement fuser (RM1-3717-000CN). Customer was advised to consider replacing the printer given its age and page count.

Problem: HP DesignJet T795 wide-format plotter reported error code 08:04.

Solution: Technician inspected the T795 end-to-end, reseated the formatter board, and cycled power multiple times. Error persisted until the technician powered the unit off and worked the front-panel button through repeated actuations, after which the plotter returned to normal operation. Error logs were note

Problem: Zebra ZM400 industrial thermal printer due for scheduled quarterly preventive maintenance (4 of 5) at Chula Vista facility.

Solution: Technician performed quarterly PM on the ZM400, cleaning internal components and running functional tests. No parts required; printer returned to service.

Problem: HP Color LaserJet Pro M452dn reported an image quality issue along with feed reliability problems from Tray 2.

Solution: Replaced the duplex fuser assembly (RM2-6460), Tray 2 feed roller (RM2-5577), Tray 2 pickup roller (RM2-5576), and Tray 2 separation roller (RM2-5881). Cleaned and tested the printer to confirm proper output and feed performance.

Problem: Labels jammed inside the SATO M10e thermal printer, preventing normal operation.

Solution: Technician cleared the label jam, removed adhesive residue buildup from the internal paper path, then cleaned and tested the unit to confirm reliable feed operation.

Problem: HP Color LaserJet MFP M775z in Chula Vista was printing all plain letter jobs in landscape orientation.

Solution: Tray 3 was misconfigured as Plain/HP Soft Gloss 120g, causing plain letter jobs to reroute to the MP tray, where paper had been loaded in landscape orientation. Technician corrected Tray 3 to Plain/Letter, cleared the MP tray, and confirmed normal output. Light streaking was also noted, traced to a

Problem: HP LaserJet MFP M630 displaying error 99.09.67 during firmware upgrade attempt, with subsequent diagnostics revealing a failed hard drive and worn Tray 4 and 5 feed/separation rollers.

Solution: Firmware upgrade triggered error 99.02.20; partial clean and Format Disk attempts returned a Disk Partition error, confirming hard drive failure. Replaced hard drive (B3G85-67903) and four Tray 4/5 feed/separation rollers (RM1-0037). Post-install, unlocked the boot device via pre-boot Admin > Manage

Problem: Konica Minolta BizHub 361 in National City reported multiple issues, including streaks running parallel to the drum direction—non-defined lines indicating potential wear on drum, cleaning blade, or developer components.

Solution: Technician diagnosed undocumented consumable history on the BizHub 361, which lacks internal replacement tracking. Quoted priority replacement of the drum (50GAR70200), cleaning blade (50GAR70300), developer unit (50GAR70400), DV-511 developer powder, and fuser as contributing factors to the streak

Problem: Lexmark MS810dn in San Marcos reported persistent paper jamming across multiple trays. The maintenance kit counter was nearly at zero, indicating severely overdue preventive maintenance.

Solution: Replaced the fuser (40X7743), pickup roller assemblies for trays 1, 2, and 3 (40X7593), and separation roller assemblies for trays 1, 2, and 3 (40X7713). Cleaned and tested the printer to confirm jam-free operation.

Problem: Lexmark MS810 laser printer producing pages with toner smearing across the left side.

Solution: Inspection revealed a wear mark on the fuser unit causing toner to smear. A maintenance kit (MK 40X8420) was recommended; the customer declined repair and opted to replace the unit.

Problem: A Printronix T8206 thermal printer was brought in with a torn drive belt, requiring part sourcing and a full preventive maintenance inspection.

Solution: Technician identified a torn drive belt and sourced a compatible replacement from a decommissioned T5206 unit on-site after confirming interchangeability. Replaced the belt, then cleaned the printer, platen roller, and printhead. Unit tested functional at completion.

Problem: Nine Zebra ZT421 industrial thermal printers at a Solana Beach facility were due for scheduled quarterly preventive maintenance.

Solution: Performed quarterly PM service on nine Zebra ZT-series industrial thermal printers. Each unit was cleaned, calibrated, and tested to manufacturer specifications.

Problem: Zebra ZT510 industrial thermal printer in Encinitas was due for its scheduled quarterly preventive maintenance service.

Solution: Cleaned residual ink from the printhead, inspected drive belt and gears—all in good condition—and tightened the printhead release lever. No labels found stuck. Print quality confirmed strong with no issues noted.

Problem: HP LaserJet 4250tn reported recurring paper jams across multiple trays at a Coronado, CA office.

Solution: Replaced swingplate assembly RM1-0043, Tray 2 pickup roller RM1-0036, and two Tray 2 feed/separation rollers RM1-0037. Cleaned and tested printer to confirm jam-free operation.

Problem: HP Color LaserJet M555 in Vista, CA was due for scheduled preventive maintenance.

Solution: Preventive maintenance performed on the HP Color LaserJet M555; nine PM service procedures completed on-site.

Problem: A Zebra ZT230 thermal printer in Oceanside, CA was reported operating at incorrect print speed (set to speed 3 of 4).

Solution: Technician adjusted the print speed setting on the Zebra ZT230, then cleaned and tested the unit to confirm proper operation.

Problem: HP Color LaserJet M750dn producing streak marks across printed pages. A leaking generic toner cartridge was found and replaced, but streaking persisted after multiple cleaning cycles.

Solution: Technician inspected the M750dn (page count 34,787) and identified the transfer belt as the source of streaking. The fuser read 60% life and the transfer belt 70%, yet the belt had degraded prematurely on this 12-year-old unit. Replacement transfer belt kit CE516A was quoted; repair was left pending

Problem: A Zebra ZT410 thermal printer in El Centro, CA was experiencing intermittent print failures, printing inconsistently rather than reliably completing jobs.

Solution: Technician inspected the ZT410 and found a cut in the platen roller (OEM part #P1058930-080). Drive belt tested good. Replaced the platen roller and verified print quality via internal prints and a live test from a connected PC.

Problem: A Zebra 105SL thermal printer in El Centro, CA required preventive maintenance service.

Solution: Technician performed a PM14 preventive maintenance service on the Zebra 105SL, restoring the unit to proper operating condition.

Problem: Lexmark MS821 laser printer in Coronado would not print without manual intervention — each job prompted a 'Change Tray 1 to Plain Paper Letter' error, requiring the customer to open and close the door to proceed.

Solution: Technician reseated and adjusted the Tray 1 cassette paper guides, reloaded the media, and cleaned the printer. Paper size was confirmed as plain letter in the tray menu. Printer returned to normal unattended operation after servicing.

Problem: HP DesignJet 510 42" (CH337A) presented with multiple issues: a faulty power supply switch and a suspected carriage belt failure.

Solution: Replaced the power supply (C7770-60014) and carriage belt (C7769-60387). Attempted trailing cable stiffener replacement but clips were too tight for installation. Oiled the carriage rod and tested the unit to confirm operation.

Problem: HP LaserJet M404N reported in for routine maintenance cleaning at a Solana Beach, CA location.

Solution: Technician performed a thorough internal cleaning on the HP LaserJet M404N. Unit was tested post-service and confirmed operating within normal parameters.

Problem: HP Color LaserJet MFP CM6040 reported recurring paper jams and a non-functional scanner.

Solution: Technician replaced the copy board, scanner board, and scanner power supply. Replacement boards did not resolve the issue and were returned; original boards were reinstalled. A firmware update attempt failed. A persistent cyan copy defect remained. Waste toner bottle on a co-located HP M553 was also

Problem: HP LaserJet 2300 in Del Mar presented with persistent paper jams originating from Tray 2.

Solution: Inspection revealed a broken Tray 2 assembly and worn pickup roller. The technician swapped the intact Tray 3 assembly into the Tray 2 position and replaced the worn Tray 2 roller with the corresponding roller from Tray 3, restoring normal feed operation.

Problem: Toshiba B-SX5T Horticulture Series thermal printer reported ribbon sticking to labels and a broken printhead plate door that would not close properly.

Solution: High-humidity environment was contributing to ribbon adhesion issues and preventing the side plate from seating correctly. Lithium grease was applied to all nubs and swivels on the printhead plate; door closure improved significantly upon testing.

Problem: HP LaserJet 4100 producing a vertical stripe down printed pages. Inspection revealed low toner, a spotted transfer roller, and worn pickup rollers.

Solution: Replaced the transfer roller (RG5-5295-000), two tray pickup rollers (RF5-3114-000), and the toner cartridge. Tested output confirmed stripe eliminated and print quality restored.

Problem: HP LaserJet MFP M527 producing a vertical black line down printed and copied pages, traced to the scanner glass.

Solution: Cleaned the flatbed scanner glass to eliminate the vertical black line artifact. Technician also noted worn feed rollers (RM2-5741, RM2-5745) in Tray 2 as a recommended follow-up replacement.