Service History — San Bernardino, CA

Problem: HP LaserJet MFP M631 (J8J64A) reported creasing paper and poor toner adhesion, with the fault traced to the fuser assembly.

Solution: Installed maintenance kit. Initial fuser failed to bond toner adequately; a replacement fuser was sourced via RMA and installed on a third visit. Device tested and cleared.

Problem: HP Color LaserJet CP5525dn presenting image quality issues traced to a faulty transfer belt.

Solution: Technician diagnosed a defective transfer belt as the root cause. A replacement transfer belt along with a tray 2 pickup roller and separation roller assembly kit were ordered and delivered to the customer site for self-installation by the customer's designated staff.

Problem: HP DesignJet T795 wide-format plotter reported error code 08:11 and failed to initialize, following a facility power outage.

Solution: Technician replaced the hard drive, updated firmware to current version, and cleaned and lubricated the carriage rail. Printer initialized correctly post-repair and produced quality output on customer test print jobs.

Problem: HP Color LaserJet M283fdw MFP producing smearing and smudging along the left-hand side of all printed output.

Solution: Identified a defective black toner cartridge as the source of the smudging. Replaced the cartridge, cleaned the printer, and verified print quality through test prints.

Problem: HP LaserJet MFP M3035 not picking up paper due to roller issues; inspection revealed a torn separation pad in the ADF assembly.

Solution: Replaced the ADF kit (CB414-67918) and tested feed operation. Paper pickup restored to normal function.

Problem: Xerox Phaser 4622 laser printer in Redlands, CA would not retain IP address settings and could not maintain a consistent network connection.

Solution: Technician reset memory, extended power save interval from 1 to 15 minutes, and applied a static IP address. Replaced the IP/Main Controller Board (140N63686) and SD Config Card (140N63554), reset all settings and counts, and confirmed successful ping response to the assigned IP.

Problem: HP Color LaserJet M775 reported recurring paper jams across multiple feed points.

Solution: Tray 3 was misconfigured to Letter-R with guides set too tight; adjusted to standard Letter orientation. Tray 5 pickup roller was installed backwards and was reseated correctly. ADF rollers and scanner glass were cleaned. Device tested and confirmed operational.

Problem: HP Color LaserJet 5550dtn presented with multiple issues: a cyan toner cartridge (C9731A) at 95% life producing severe streaking, and degraded feed rollers in trays 2 and 3.

Solution: Replaced four tray 2 and 3 feed rollers (RF5-3338). Cleaned and tested the printer. Customer declined toner cartridge replacement; roller service completed and unit returned to operation.

Problem: HP Color LaserJet MFP M477fnw produced fuzzy, blurry output with ghost imaging across printed pages.

Solution: Technician cleaned the machine, then replaced the fuser (RM2-6431), Tray 2 pickup roller (RM2-5576), Tray 2 feed roller (RM2-5577), and Tray 2 separation roller (RM2-5581). Print quality verified normal before closing the call.

Problem: Lexmark MS821n laser printer due for preventive maintenance; excessive paper dust accumulation found throughout the interior and paper tray.

Solution: Performed full preventive maintenance on the Lexmark MS821n, clearing heavy paper dust buildup from the interior and paper tray, then tested the printer to confirm normal operation.

Problem: HP LaserJet M630 MFP in Rialto, CA required a maintenance kit — one of two units at the location needing service.

Solution: Technician installed a new HP LaserJet M630 MFP maintenance kit, then cleaned and tested the printer to confirm proper operation.

Problem: HP LaserJet M608 reported persistent paper jams, occurring approximately every four pages.

Solution: Technician cleared the active jam, then inspected the fuser and feed/separation rollers. Rollers were found excessively worn — glazed surfaces and a flat spot on the feed roller. Replaced feed and separation rollers (tray roller kit, part #J8J70-67906) with on-hand spares, restoring reliable paper f

Problem: HP Color LaserJet MFP M577 displaying error 49.38.07, persisting even with network connection removed.

Solution: Tested alternate fuser and reseated all formatter connections; error persisted. Diagnosed a previously interrupted firmware load. Walked customer through firmware recovery sequence (power cycle, HP logo hold, Admin > Partial Clean), which cleared the error and restored full operation.

Problem: HP LaserJet M608n producing faded, light print output. Customer had already replaced the toner cartridge, but print quality remained degraded.

Solution: Technician identified a worn transfer roller as the root cause — a cleaning had temporarily resolved the same fading issue one to two months prior. The transfer roller was replaced from stock, the printer was cleaned, and test prints confirmed restored image quality.

Problem: Lexmark MC3224adwe MFP reported a 900.00 error following a prior controller board replacement performed to resolve a blank display.

Solution: Technician updated the device firmware, which cleared the 900.00 error. The printer returned to normal operation with no further error messages reported.

Problem: Lexmark MS810n display screen flickering on and off intermittently.

Solution: Technician reseated panel connections, tested alternate power cord and outlet, and cycled power. Unit continued printing via network, pointing to a faulty control panel rather than the RIP board. Customer opted to replace the printer; call closed without parts installation.

Problem: Lexmark MS610DN duplexing consistently — first page ejected too far, paper crinkled on re-entry, triggering a jam every duplex cycle; simplex printing unaffected.

Solution: Replaced the upper redrive assembly (part 40X8437). Inspection revealed a failed duplex reverse solenoid and heavily worn redrive rollers. Cleaned and tested printer; duplex cycling restored to normal operation.

Problem: HP LaserJet MFP M632 reported producing poor print quality.

Solution: Inspection identified defects in the fuser assembly. Replaced the maintenance kit (J8J87A) and cleaned the ADF glass, then tested output to confirm print quality was restored.

Problem: HP Color LaserJet M452dn reported loud noise originating from the rear of the unit, accompanied by recurring paper jams from the tray and through the fuser area, with visible ghosting on output.

Solution: Technician could not duplicate the noise on arrival. Identified jams at the tray feed and fuser stages; fuser confirmed ghosting. Duplex fuser assembly (RM2-6460-000CN, RM2-6418-000CN) and feed roller (RM2-5577-000CN) were replaced. Unit was swapped with a spare M452 pending parts arrival.

Problem: HP Color LaserJet M477fdn producing black streaks running vertically down every printed page.

Solution: Technician inspected the non-OEM black toner cartridge and identified toner clumping on the drum/imaging unit corresponding directly to the streak pattern. Configuration, supplies status, and page count reports were printed; the supplies status page indicated 50% toner remaining with an install date

Problem: HP Color LaserJet M570dn MFP brought in for scheduled preventive maintenance at a Pomona, CA business.

Solution: Performed PM-1 service on the HP Color LaserJet M570dn MFP at approximately 10,198 page count. Cleaned internal components, feed rollers, and scanner glass, then tested full functionality to confirm normal operation.

Problem: Lexmark MS810 laser printer in Redlands presented with a constantly flickering LCD display during initialization, preventing a ready status from appearing on screen.

Solution: Technician power-cycled the unit and tested on an alternate outlet — neither resolved the flicker. On-site inspection confirmed the display flashed continuously after the Lexmark logo stage, though the printer completed initialization and remained network-functional. Diagnostic testing, including a

Problem: HP LaserJet M606 reported producing loud squeaking noises during operation.

Solution: Ran full component diagnostics on the HP LaserJet M606; no noise could be reproduced during testing. Follow-up with the customer confirmed the issue had not recurred.

Problem: Customer requested procurement and delivery of a new Lexmark C2425dw color laser printer with an optional paper tray.

Solution: Delivered a new Lexmark C2425dw color laser printer and optional input tray to the customer's Moreno Valley location, placing the equipment in the designated showroom area.

Problem: HP LaserJet P2035 reported paper feeding issues.

Solution: Technician replaced the feed tire from on-hand stock, cleaned the paper path, and tested the printer to confirm reliable media pickup and feed operation.

Problem: HP LaserJet MFP M527 reported a Tray 2 lift error, preventing normal paper feeding operations.

Solution: Replaced Tray 2 lift rollers, cleaned the machine, and tested feed operation. Tray 2 lift error cleared and paper handling restored to normal function.

Problem: Xerox Phaser 3600 laser printer presented with multiple issues: an image quality defect and a feed failure traced to the auxiliary tray.

Solution: Technician diagnosed a faulty auxiliary tray feed roller assembly and a failed toner/drum assembly. The drum unit was replaced first, resolving the image defect. The auxiliary tray feed roller kit was ordered and installed on a follow-up visit, returning the unit to full operation.

Problem: HP Color LaserJet M775 MFP intermittently displaying 50.B1.11 and 50.B1.21 fuser errors; power cycling temporarily cleared the fault, pointing to an electrical issue in the fuser or low-voltage power supply.

Solution: Technician swapped in a known-good fuser to isolate the fault between the fuser assembly and low-voltage power supply (RM1-8895). A replacement fuser received from the vendor also proved defective, displaying a 50.BF.00 error on power-up; a second replacement fuser was installed and tested. A residu

Problem: HP Color LaserJet CM4540 MFP reporting error code 13.B9.A1 (Fuser Area Jam). Customer noted the error indicated a hot fuser despite the unit not being hot, with recurring jams persisting after manual clearing.

Solution: Technician diagnosed a faulty third-party fuser as the root cause of the 13.B9.A1 error. The aftermarket unit was swapped out for the original fuser, after which the printer tested without errors. Customer arranged to source an OEM replacement fuser for permanent installation.

Problem: HP Color LaserJet CP2025 in Moreno Valley reported for routine cleaning and suspected roller wear.

Solution: Technician cleaned the CP2025 (page count: 9,453), replaced worn pickup/feed rollers, and tested the printer to confirm reliable operation.

Problem: HP LaserJet M606 reported with a paper jam requiring urgent attention.

Solution: The customer cancelled the service request before the technician dispatched. No on-site work was performed; call closed without service.

Problem: Customer requested procurement of a new Lexmark MS821dn laser printer with three additional paper trays for the accounting department.

Solution: Sourced and fulfilled order for a Lexmark MS821dn and three supplemental paper trays, shipped separately with estimated delivery dates confirmed for the printer and trays.

Problem: HP DesignJet T520 36" plotter producing unclear images with bleeding lines.

Solution: Technician performed multiple head cleaning cycles onsite, which significantly improved output quality. Full restoration required printhead replacement (part no. C1Q10A); customer declined the recommended repair.

Problem: HP LaserJet 4350 at a Colton, CA business was experiencing persistent paper jams, with paper stopping beneath the toner cartridge area.

Solution: Technician found exit flags sticking in the exit guide assembly. Replaced the Tray 2 paper tray and pick-up solenoid, then removed the sound dampener from the exit guide. Verified jam-free operation before closing the call.

Problem: Lexmark MS821dn displayed a persistent blue screen on boot, requiring a full power cycle by unplugging and replugging to restore operation.

Solution: Replaced pickup roller assemblies and separation pad assemblies in trays 1, 2, and 3. Installed a new imaging unit after the existing unit — at 83% rated life — produced faded output with vertical lines. Cleaned and tested the printer. Unit is stationed in a service lane exposed to outdoor elements,

Problem: Customer required a new HP LaserJet M404dn to replace an aging M402dn unit at their Fontana, CA location.

Solution: Technician received, delivered, configured, and tested the HP LaserJet M404dn, confirming full operational status before handoff.

Problem: HP LaserJet 600 M602 required a maintenance kit, with the unit logging approximately 336,984 pages of total print volume.

Solution: Technician installed a maintenance kit on the HP LaserJet 600 M602, then cleaned and tested the printer to confirm proper operation.

Problem: Canon ImageClass MF414dw reported a recurring paper jam at the rear duplexing tray, indicating worn feed components in Tray 1.

Solution: Cleared the jam from the duplexing tray, then replaced the Tray 1 pickup roller (RM1-6467) and separation pad (RM1-6397). Unit was cleaned and test-printed to confirm normal paper feed before return to the customer.

Problem: HP LaserJet Managed MFP E52645dn experiencing chronic paper jams across multiple paper trays.

Solution: Cleaned the machine, then installed a replacement fuser (RM2-5679 maintenance kit) and pickup and separation rollers (RM2-5741, RM2-5745) for trays 3 and 4 across multiple visits. Tested after final parts installation; unit returned to full operation.

Problem: OKI Microline 8480fb dot matrix printer reported intermittent feed failures and a blocked paper path.

Solution: Technician cleared the paper path jam and adjusted print settings to improve output quality. Customer verified normal operation before close.

Problem: HP LaserJet 500 MFP M525 required ADF assembly installation; replacement unit was on site and ready for fitting.

Solution: Installed the CF117A ADF assembly on the HP LaserJet 500 MFP M525. Completed internal print and copy testing to verify proper function post-installation. Network/IT setup flagged as a required next step before full deployment.

Problem: HP LaserJet E50145 in Moreno Valley stuck in startup mode, repeatedly throwing error code 99.39.67.

Solution: Technician cleaned the unit, then flashed firmware to version 5.6 via USB drive. Device cleared the 99.39.67 error and booted normally. Unit tested and returned to service.

Problem: Customer in Montclair, CA required a new Lexmark MS821n laser printer.

Solution: A new Lexmark MS821n was sourced and shipped to the customer via UPS.

Problem: HP LaserJet M607 producing smeared toner on check stock, requiring same-day service response.

Solution: Inspection revealed a torn heating element film in the fuser unit. Technician swapped fusers across three on-site M607 printers to restore one unit to operation, identifying a second defective fuser with the same torn film in the process. Replaced the main maintenance kit on the repaired unit and re

Problem: The customer required a new Lexmark B2650dw monochrome laser printer for an accounting department location in Rialto, CA.

Solution: A new Lexmark B2650dw mono laser printer was sourced and shipped directly to the customer's requested delivery location pending setup at the accounting department site.

Problem: HP LaserJet P4515x reported with suspected toner explosion and active paper jams.

Solution: Inspection revealed no toner leak. An unremoved toner cartridge shipping insert had caused full-black half-page output and a fuser jam. Technician cleared paper wrapped around the heat roller, confirmed jamming and page creasing resolved, and verified print quality before closing the call.

Problem: HP LaserJet 4350n producing blurry prints with toner smudging off the page, indicating fuser assembly failure.

Solution: Confirmed premature fuser failure on the HP LaserJet 4350n. Replaced the fuser assembly, reset the maintenance count, and verified print quality with no remaining issues.

Problem: HP LaserJet Pro M426FDN reported a persistent paper jam with the printer completely unresponsive — no printing or any function, even after power cycling.

Solution: Technician cleared the jam, then diagnosed broken toner cartridge and incorrect feed rollers as root causes. Fuser, feed rollers, and toner cartridge replaced. ADF glass cleaned to eliminate scan lines. Device tested and confirmed operational.

Problem: HP LaserJet P4015n in Rancho Cucamonga reported paper draw errors and recurring error messages on the control panel.

Solution: Technician adjusted the paper tray alignment and performed a thorough cleaning to remove accumulated dust from feed components. Printer tested and confirmed error-free before closeout.

Problem: HP Color LaserJet 500 M551 displaying error messages and refusing to print; a vertical streak was observed on output pages, and the customer reported inability to print from a Mac.

Solution: Printed configuration pages and identified a wear pattern on the intermediate transfer belt as the source of the streak defect. Replaced the intermediate transfer belt kit (RM2-7448-000CN) and waste toner collection unit (CE254A). Ran full color calibration 12 times to achieve proper color alignment