Service History — Riverside, CA — Page 2

Problem: Zebra 105SL (10500-3001-2000) in Pomona, CA presented with print quality issues flagged during a PM34 preventive maintenance inspection.

Solution: Technician found the platen roller gear unseated and reinstalled it, then reseated the printhead which had not been lying flat. Inspection revealed cuts on the platen roller; an MG G32011M platen roller was quoted and approved for replacement.

Problem: HP LaserJet Enterprise MFP M635h delivered without fax accessory installed. Customer had unboxed and set up the printer but required technician assistance to locate and install the fax card.

Solution: Technician located the fax card, installed it in the HP LaserJet Enterprise MFP M635h, powered the unit on, completed fax setup, and verified functionality by sending and receiving a test fax.

Problem: Customer in Hemet, CA requested procurement of a new Lexmark M821dn monochrome laser printer with two additional paper trays.

Solution: Sourced and drop-shipped a Lexmark M821dn configured with two extra input trays to the customer site. Unit delivered and fulfilled as a new equipment purchase.

Problem: Customer requested an on-site consultation to assess a mixed fleet of Zebra thermal printers — including 105SL Plus, ZT510, 170Xi4, and 220Xi4 units — for preventive maintenance and break/fix needs.

Solution: Technician inspected all units on-site. Found three Zebra 105SL Plus printers missing main drive belts (P/N P1006066, 203 & 300 dpi). ZT510s and a 220Xi4 were flagged for PM service. The 170Xi4 (P/N 172-801-0000) was also evaluated. A repair and parts quote was prepared for drive belts and additiona

Problem: Zebra 140Xi4 thermal printer in Upland, CA producing extremely faded, unusable labels on the first few prints after periods of idle time.

Solution: Technician cleaned the printhead and paper path, then adjusted darkness settings and corrected media wrinkles on the Zebra 140Xi4. Customer confirmed improved print quality after testing.

Problem: Lexmark X792de reported black streaks running down printed pages along with recurring paper jams.

Solution: Replaced the black imaging unit on the Lexmark X792de. Cleaned internal paper path components and tested print output to confirm streak-free results and clear jam condition.

Problem: Lexmark CX522ade MFP brought in for a carry-in repair with persistent paper jams. The leading edge of paper was stopping upon entering the transfer belt assembly, and the transfer belt was not rotating.

Solution: Technician diagnosed a seized transfer belt on the Lexmark CX522ade. After manually rotating the transfer belt confirmed binding and poor image quality, the Transfer Module (Belt, part #41X1039) was replaced. All internal areas were cleaned and the unit was tested to confirm proper operation.

Problem: Customer requested delivery and setup of a new HP LaserJet M501dn with an optional third paper tray.

Solution: Delivered and unboxed the HP LaserJet M501dn with optional Tray 3, completed setup, and tested print functions across multiple applications. All programs printed correctly; however, the check-printing application produced duplex output on every check regardless of settings. Customer was advised to c

Problem: Zebra 105SL Plus thermal printer in Corona, CA producing faded output.

Solution: Diagnosed faded print to an incorrect darkness setting of 15 — well above the recommended value of 8 for Plus-series models. Adjusted setting to 8 and tested; print quality confirmed normal.

Problem: Lexmark MS911de displaying a persistent error message prompting photoconductor replacement.

Solution: Technician replaced the OEM Lexmark photoconductor unit (54G0P00), seating it correctly to engage the chip and reset the page count. A residual 600k maintenance kit message could not be manually cleared, indicating a chip-reset component within the kit is required to complete that counter reset.

Problem: A Zebra 105SL thermal printer in Chino Hills was due for a PM8-level preventive maintenance service.

Solution: Performed PM8 service on the Zebra 105SL: installed toggle from customer stock, adjusted printhead bracket and lower platen roller, reseated printhead, and calibrated top-of-label setting. Printer tested and returned to operation.

Problem: HP LaserJet P2035 would not pick up paper from Tray 2. Customer reported print quality was acceptable but the printer failed to feed sheets consistently.

Solution: Diagnosed worn Tray 2 pickup roller (RM1-6414) and separation pad (RM1-6397) as the cause of the feed failure. Replaced both components, cleaned the printer, and tested to confirm reliable paper pickup.

Problem: Zebra GX430t thermal printer in Hemet, CA was due for scheduled preventive maintenance (visit 3 of 7 in the service agreement).

Solution: Technician performed scheduled PM on the Zebra GX430t at 199,002 inches of media feed — cleaning internal components and reconfiguring printer settings to manufacturer specifications.

Problem: HP Color LaserJet M553 was due for a preventive maintenance service at approximately 46,854 total page count.

Solution: Performed PM6 preventive maintenance kit service on the HP Color LaserJet M553. Cleaned internal components and tested the unit; output quality confirmed within acceptable margins.

Problem: HP LaserJet 2430 in Colton, CA was jamming and printing blank pages.

Solution: Technician identified a bent electrical contact on the inner left side of the printer that had lost contact with the toner cartridge, causing blank output. The contact was straightened, restoring proper cartridge communication. Printer was cleaned and tested with confirmed full-quality image output.

Problem: Zebra ZM400 thermal printer in Ontario, CA was due for scheduled preventive maintenance (PM 3 of 12).

Solution: Technician performed scheduled preventive maintenance on the Zebra ZM400, including a full internal cleaning and functional test to confirm proper operation.

Problem: HP LaserJet M608 reported in need of a maintenance kit, with the fuser assembly due for replacement based on page count.

Solution: Installed maintenance kit on HP LaserJet M608. Confirmed fuser fuse had popped, replaced kit components, and reset the page count. Tested printer to verify proper operation.

Problem: Canon ImageCLASS MF424dw MFP reported persistent paper jams originating from both the ADF and Tray 2 feed assemblies.

Solution: Replaced the ADF pickup roller assembly (FM1-N703), ADF separation pad (FM1-P580), Tray 2 pickup roller assembly (RM2-5452), and Tray 2 separation roller assembly (RM2-5397). Cleaned the unit and verified jam-free operation before returning it to the customer.

Problem: HP LaserJet M3035 MFP reported recurring issues with the top feeder — ADF not feeding documents reliably.

Solution: Cleared a paper jam from the ADF paper path, cleaned the feed components, and tested the unit to confirm reliable document feeding.

Problem: HP LaserJet 600 M602 presented with a worn maintenance kit requiring replacement.

Solution: Maintenance kit installed on HP LaserJet 600 M602; page count reset and unit tested to confirm proper operation.

Problem: HP LaserJet P3015 in Rialto, CA presented with multiple issues across a fleet of four units requiring maintenance intervention.

Solution: Installed a maintenance kit and two sets of tray rollers on the HP LaserJet P3015. Cleaned and tested the unit following all repairs.

Problem: Lexmark MS810dn displaying 'Replace Maintenance Kit to Resume Printing' error, accompanied by paper-feed issues across multiple trays.

Solution: Replaced the fuser assembly, pickup roller assemblies in trays 1, 2, and 3, and separation roller assemblies in all three trays. Cleaned and tested the printer to confirm normal operation.

Problem: HP Color LaserJet 700 MFP M775 reported a persistent fuser error 50.B1.21, occurring 2–3 times daily; cycling power provided only temporary relief.

Solution: Replaced the fuser assembly on the HP CLJ 700 MFP M775 and reset the fuser supply counter. Inspected all paper trays and feed rollers, cleaned the registration transport, and wiped down exterior covers. Advised the customer that per the service manual, the fuser count resets automatically after 100

Problem: Lexmark MS810n laser printer in Ontario, CA reported as requiring a maintenance kit.

Solution: Technician installed a maintenance kit on the Lexmark MS810n, performed cleaning, and tested the unit to confirm proper operation.

Problem: HP LaserJet M4345 MFP required a maintenance kit, a full Tray 3 assembly replacement, and a Tray 2 solenoid replacement.

Solution: Technician printed configuration, supplies status, and usage pages on arrival — no jams detected from any tray. All customer-supplied parts were installed: full maintenance kit, complete Tray 3 assembly, and Tray 2 solenoid. Post-install, 30 pages were run from Trays 2 and 3 individually with no jam

Problem: HP LaserJet Pro P1606dn reported producing smudged output.

Solution: Technician cleaned the toner dump; print quality was restored and the printer passed post-service testing.

Problem: HP LaserJet M602n in Redlands, CA presented with print quality issues, including streaky toner output affecting document output.

Solution: Replaced the Tray 2 pickup roller and both Tray 2 feed rollers with stocked components, then cleaned the printer thoroughly. Post-service test prints confirmed clean, streak-free image quality.

Problem: HP LaserJet P4015 presented with multiple issues including paper jams and degraded print quality (unit 31 of 31 in fleet service).

Solution: Installed HP CB388A fuser maintenance kit, reset the maintenance page count, and verified clean print output with no recurring jams.

Problem: HP LaserJet M402n reported recurring paper jams originating from the rear of the unit.

Solution: Cleared paper jam from the rear paper path, adjusted the Tray 2 cassette paper-size guides to the correct letter-size position, then cleaned and tested the printer.

Problem: Zebra ZT510 industrial thermal printer in a warehouse shipping office was due for scheduled preventive maintenance.

Solution: Technician performed a full preventive maintenance service on the Zebra ZT510, including thorough cleaning and functional testing to verify proper operation.

Problem: Lexmark MS810 laser printer was producing loud mechanical noises, punching holes in pages, and had metal fragments loose inside the unit.

Solution: Technician replaced the fuser assembly, tray 1 pickup roller assembly, and tray 1 separation roller assembly, then cleaned and tested the printer to restore normal operation.

Problem: Zebra GX430t thermal printer in Chino, CA was due for its fourth scheduled preventive maintenance visit in a five-service cycle.

Solution: Technician performed scheduled PM on the Zebra GX430t at 1,768,667 inches of use, including full cleaning and configuration of the printer.

Problem: Zebra 105SL thermal printer presented with multiple concurrent faults requiring a full diagnostic teardown to assess component condition.

Solution: Technician identified six separate failure points across the unit. Given the extent of damage and parts required, the printer was deemed uneconomical to repair. Serviceable components were harvested prior to disposal.

Problem: HP LaserJet 4250 reported recurring paper jams that could not be cleared through standard jam-removal procedures.

Solution: Technician located two simultaneous jams — one in the fuser and one at the front assembly. Disassembled the front assembly; inspected sensor flag and roller assembly, both confirmed functional. Extracted stuck media from the fuser. Verified sensor flag and rollers were undamaged. Tested across multi

Problem: Customer reported ADF issues on a Lexmark MS810 laser printer. The MS810 has no ADF; the actual faults were media jams originating at the multipurpose tray and rear exit path when running new postcards.

Solution: Replaced Upper Redrive Assembly (40X7602), MP Tray Roller (40X7600), Separation Roller (40X7713), and Pick Roller (40X7593). Tested all media types in both trays — no jams detected after parts replacement.

Problem: HP LaserJet M606x in Chino Hills reported repeated paper jams, disrupting one of two printers in the customer's fleet.

Solution: Replaced two pickup rollers and four feed rollers from technician stock, then cleaned and tested the printer. Feed performance restored to normal operation.

Problem: HP E82550Z MFP in Lake Elsinore reported pink lines running vertically down the page, indicating worn imaging consumables.

Solution: Cleaned and vacuumed the machine interior. Replaced the fuser, transfer belt, and drum unit. Subsequently installed a new waste toner bottle (W9016MC) and tray 2 roller kit (Z9M01A). Tested after final parts installation; issue resolved.

Problem: A Datamax I-4212e thermal printer in Colton, CA was due for scheduled preventive maintenance.

Solution: Technician performed PM service on the Datamax I-4212e, completing a full cleaning cycle per PM #21 protocol.

Problem: Customer requested two new Zebra ZT411 (42-T010000Z) thermal printers; units were on backorder at time of order.

Solution: Two Zebra ZT41142-T010000Z units were sourced and ordered. The model carried a 6–8 week lead time; units were delivered on 07/05/2022.

Problem: Customer in Lake Elsinore required a new HP Color LaserJet M553dn unit with an additional paper tray.

Solution: Fulfilled new equipment order for an HP Color LaserJet M553dn with an optional extra paper tray. Unit shipped directly to the customer's location.

Problem: Customer in San Bernardino, CA required two new Lexmark MS821dn laser printers with additional paper tray capacity.

Solution: Procured two Lexmark MS821dn units, each configured with two additional paper trays, and coordinated shipment to the customer's location.

Problem: HP LaserJet Enterprise MFP M527f producing skewed output when making copies.

Solution: Replaced the flatbed scanner assembly. Calibrated the scanner, cleaned the machine, and tested copy output to confirm alignment was restored.

Problem: Zebra ZT610 (300 dpi, model ZT61043-T010100Z) had been stored in its original box for years. Upon initial power-on, the display lit but remained blank, and the unit showed ribbon-out and media-out errors.

Solution: Reseated the operator panel ribbon cables, configured media settings appropriate for the installed stock, ran a media calibration, and verified print output. Unit returned to full operation.

Problem: Zebra 105SL Plus thermal printer in Pomona, CA was due for scheduled preventive maintenance.

Solution: Technician performed PM28 service: cleaned internal components, adjusted print settings, and verified proper operation through post-maintenance testing.

Problem: HP LaserJet Managed MFP E52645dn presented with image misalignment across print trays and visible lines appearing in copies and scans.

Solution: Cleaned ADF glass and rollers to eliminate scan lines. Performed 11 X/Y axis registration adjustments across trays 2 and 3. Final calibration: Tray 2/3 set to -1 Front Side Horizontal Shift and +3 Front Side Vertical Shift. Tray 4 confirmed centered at all-zero settings. Output verified clean and ce

Problem: Lexmark T654 laser printer producing pages with bleeding toner — toner not fusing cleanly to the media.

Solution: Technician verified the symptom and diagnosed a failed fuser assembly as the root cause. Replacement fuser was sourced from the technician's on-hand stock and installed on-site, resolving the bleeding toner defect.

Problem: Brother MFC-L8610cdw at a Colton, CA office would not power on beyond the power indicator light — no engine test, no print response, and firmware update was not possible.

Solution: Technician diagnosed an electrical fault isolated to either the main board or power supply; the control panel was ruled out. A second unit on site was also found non-functional. Both printers were retained by the customer for use as mechanical parts donors.

Problem: HP LaserJet 4250 reported producing a grinding/gear-popping noise during operation.

Solution: Defective toner cartridge identified as the source of the gear-popping noise; supply status page could not be printed to confirm toner level, confirming the cartridge as faulty. Replaced the toner cartridge (42A), MP separation pad, one pickup roller, and two feed rollers. Cleaned and tested the pri

Problem: A Datamax I-4212e thermal printer at a Colton, CA facility was due for scheduled preventive maintenance.

Solution: Technician performed a full PM service on the Datamax I-4212e, including thorough cleaning of internal components to restore reliable print operation.

Problem: Zebra 105SL thermal label printer due for quarterly preventive maintenance (4 of 4 in scheduled PM cycle) at Chino Hills facility.

Solution: Inspected drive belts, gears, platen roller, and printhead — all found in good condition. Printed test label; output quality confirmed acceptable. No adhesive or label debris required removal. Quarterly PM completed.