Service History — Aurora, CO

Problem: HP Color LaserJet MFP E47528f experiencing ADF jams and grinding noise; device unable to scan more than 2–3 pages before failing.

Solution: Installed a replacement ADF assembly on the HP CLJ E47528f MFP. Cleaned the unit and conducted post-repair testing to confirm reliable multi-page document feeding.

Problem: HP DesignJet T120 wide-format plotter reported with a damaged ink cartridge.

Solution: Customer replaced the cartridge independently before the technician's arrival. Management opted to defer repairs given the unit's age. Call was closed without an onsite visit at the customer's request.

Problem: HP LaserJet M425dn (pg count 75,116) reported recurring paper jams.

Solution: Installed maintenance kit with new fuser. Initial replacement fuser exhibited image echo and toner rub-off; defective unit was returned and a second replacement fuser was sourced. Second fuser installed; 40-page test confirmed no jams. Printer subsequently resumed jamming, prompting a third fuser re

Problem: HP LaserJet Managed E60165dn required new unit installation at a Denver, CO office location as part of a two-printer deployment.

Solution: Technician delivered and installed the HP LaserJet Managed E60165dn. A high-capacity paper tray unit was subsequently sourced, delivered, and installed after the customer identified the need post-setup. Two legacy HP P4515 printers were flagged for removal pending coordination.

Problem: HP LaserJet 8150 required a replacement fuser unit.

Solution: Replacement fuser assembly was ordered and shipped directly to the customer's Littleton location for self-installation.

Problem: HP LaserJet M632h MFP producing pages with heavy toner smearing and intermittent wrinkling at 35,593 page count.

Solution: Identified a defective toner cartridge — despite showing 100% life remaining — with a binding toner drum as the root cause. Replaced it with a customer-supplied spare, then cleaned the printer. Output quality was restored upon testing.

Problem: HP LaserJet P4015 experiencing random jams originating from Tray 2 at the registration assembly area.

Solution: Inspected exit fingers and bin-full actuators — found actuators sticking; removed dampers. Discovered residual packing foam lodged near the fuser drive gear; removed it. Jam persisted, prompting fuser swap with the on-site maintenance kit unit; original fuser reinstalled after no improvement. Isolat

Problem: OKI C331 color laser printer was due for a PM2-level preventive maintenance service.

Solution: Technician performed PM2 preventive maintenance on the OKI C331, cleaned internal components, and tested the printer to confirm proper operation.

Problem: HP LaserJet M602 in Englewood reported repeated paper jams across multiple feed points, with the printer completely down and a maintenance kit message active at 882,780 pages.

Solution: Technician cleared existing jams, inspected feed system, and replaced four RM2-5642 and two RM2-6046 rollers, which were fully worn. A CF064A maintenance kit was then installed, reset performed, and the printer cleaned and tested to confirm normal operation.

Problem: HP LaserJet P4015 in Littleton experiencing repeated paper jams originating from Tray 2.

Solution: Replaced Tray 2 feed/separation rollers (RM1-0037-020CN, qty. 2) and Tray 2 pickup roller (RM1-0036-000CN, qty. 1). Verified jam-free operation after installation.

Problem: A Littleton, CO business required a new Lexmark B2650dw monochrome laser printer to be sourced and delivered to their office location.

Solution: Technician procured and delivered a new Lexmark B2650dw (S/N 460001531CMFZ) to the customer's location, with installation pending on the customer's end.

Problem: HP Color LaserJet M452dn displaying a 59.F0 error. Inspection revealed a failed transfer belt as the root cause, along with worn Tray 2 pickup, feed, and separation rollers.

Solution: Replaced transfer belt (RM2-6454), Tray 2 separation roller (RM2-5881), pickup roller (RM2-5576), and feed roller (RM2-5577). Cleaned, tested, and returned the printer to the customer's Englewood location.

Problem: HP Color LaserJet Flow MFP M577z producing a moaning noise during paper feed and leaving cyan toner spills on every printed page.

Solution: Tray 2 pickup roller and separation roller assemblies were worn slick, causing the moaning sound during feed; both assemblies were replaced. The cyan toner cartridge at 80% remaining life was leaking onto pages and was swapped for a new OEM cyan cartridge, restoring clean, accurate color output.

Problem: HP LaserJet MFP M3035xs reported persistent paper jamming.

Solution: Replaced maintenance kit components, cleaned scanner glass, and tested the unit to confirm jam-free operation.

Problem: HP LaserJet 4250 producing vertical lines and smudges running the length of each printed page.

Solution: Identified a defective toner cartridge — despite showing 65% life remaining — as the source of streaking. Replaced the cartridge and cleaned the printer. Print quality restored upon testing.

Problem: HP LaserJet MFP M521dn reported a 50.8 fuser error, indicating fuser assembly failure requiring maintenance kit replacement.

Solution: Cleaned the unit, then installed a CF116-67903 Fuser Maintenance Kit and A8P79-65001 ADF Kit. Tested the printer after service; all functions confirmed operational.

Problem: HP LaserJet M607 reported multiple issues: loud mechanical noise during operation and a completely blank white display showing no output.

Solution: Replaced the fuser maintenance kit and display screen. Installed a spare paper tray 2 sourced on-site, repaired the tray 2 rear swing guide left-side lock, and cleaned the machine throughout. Tested all functions prior to closeout.

Problem: HP LaserJet P3015 in Broomfield reporting a persistent paper jam the customer could not locate or clear.

Solution: Technician installed a replacement maintenance kit, repaired the registration assembly, performed a thorough cleaning, and verified proper paper transport through functional testing.

Problem: HP LaserJet Pro M426fdn presented with streaks and lines appearing in scans and copies, and required scheduled maintenance service.

Solution: Cleaned the scanner glass to eliminate streaking artifacts in scans and copies. Replaced the document feeder roller and separation pad. Tray 2 feed rollers were also sourced and dispatched for installation. Unit tested and confirmed operational after service.

Problem: HP Color LaserJet M680 producing vertical lines down the page during scanning operations.

Solution: Cleaned the scanner glass; lines did not reproduce before or after cleaning. Replaced two feed rollers using components from an M775 maintenance kit. Tested the unit — output confirmed within specification.

Problem: HP Color LaserJet E58650dn MFP in Arvada presented with jams on Tray 1 and Tray 2, including error 15.A1.D1 on Tray 1 pulls, requiring manual cartridge removal after each printed sheet.

Solution: Technician found Tray 2 paper guide misaligned and paper type set to incorrect weight; adjusted guide and set media type to plain, restoring Tray 2 (8.5×11) feed. Tray 1 continued throwing error 15.A1.D1 — undocumented in the service manual. After consulting HP support and an independent technical r

Problem: HP Color LaserJet Enterprise M750 producing streaks on printed pages, traced to grooves worn into the transfer belt by low-quality third-party toner cartridges.

Solution: Ran cleaning pages three times with no improvement. Inspection revealed physical grooving on the transfer belt caused by abrasive residue from non-OEM toner. Replaced the transfer belt assembly (CE516A) with a new OEM transfer kit and tested output to confirm streak-free print quality.

Problem: HP LaserJet MFP Flow M632 displaying recurring error code 30.03.22 — a scanner calibration error logged intermittently across multiple days in the event log.

Solution: Technician found a paperclip lodged under the ADF lift tray. After removal and cleaning, calibration was run but the error returned the following day. Replaced the flatbed scanner assembly (part J8J64-67901) and completed full calibration; unit tested clear.

Problem: HP LaserJet M607 in Golden, CO was producing a loud rubbing noise during every print cycle.

Solution: Replaced the fuser, tray 2 pickup roller, and tray 2 separation roller using components from a manufacturer maintenance kit. Cleaned the unit thoroughly and verified quiet, normal operation through test prints.

Problem: HP LaserJet M608 would not recognize installed toner cartridges. Cartridges tested functional in a neighboring M608N unit, isolating the fault to the printer itself.

Solution: Consultation with two vendor support lines pointed to the formatter (K0Q14-60002) and DC controller (RM2-9494) as likely culprits, consistent with corrupted device logic from a prior refurbishment. Replacing the formatter produced an unresolvable 49 error; hard drive formatting and firmware updates

Problem: HP LaserJet M606 required a fuser replacement at a Commerce City, CO business.

Solution: Technician delivered a new fuser unit to the customer site and retrieved the spent fuser core for return.

Problem: HP LaserJet E52645 in Arvada, CO produced a persistent vertical line across all printed documents.

Solution: Technician cleaned the scanner glass on the HP LaserJet E52645 and ran test prints to confirm the vertical line was eliminated.

Problem: A Dell 5130cdn laser printer in Denver was producing degraded print quality traced to a failing fuser unit.

Solution: The technician replaced the fuser assembly on the Dell 5130cdn and tested the printer to confirm restored output quality.

Problem: Lexmark MS810de in Littleton experiencing significant delays when printing end-of-day reports; internal test prints completed normally.

Solution: Technician reproduced the delay and updated the device firmware. A follow-up visit confirmed the issue had resolved — end-of-day report printing returned to normal performance.

Problem: HP LaserJet MFP M630 reported to a Westminster, CO business with unspecified print quality or performance issues at approximately 25,000 pages on the page counter.

Solution: Technician cleaned internal components on the HP LaserJet MFP M630, then tested the unit; output quality confirmed within acceptable margins at completion.

Problem: HP Color LaserJet M477fnw MFP displayed a paper size error after tray 2 was reconfigured from legal to letter. The tray printed only the last cached page when prompted.

Solution: On-site inspection confirmed tray 2 cassette was physically set to letter size, but the printer's tray 2 software setting still registered legal. Correcting the tray size setting in the printer menu resolved the paper size error and restored normal print output.

Problem: HP Color LaserJet MFP M575 reporting error 13.FF.FF jam in right door with no visible paper present; prior error 41.07.12 had also been logged. Powering off, firmware update, partial disk wipe, and fuser replacement did not clear the fault.

Solution: Ran manual sensor diagnostics from the service menu and located a small torn paper fragment lodged in the registration assembly. Removed the debris, clearing the 13.FF.FF error. Registration assembly replacement recommended if the fault recurs.

Problem: HP LaserJet M631 intermittently emitting a high-pitched noise throughout the day. Restarting and power-cycling the unit did not resolve the symptom.

Solution: Technician ran extensive 50+ page test prints, removed an unused fax card, and replaced the expired toner cartridge. High-pitched noise could not be reproduced during servicing.

Problem: HP DesignJet T730 displaying error 0042-0117 on power-up. The carriage traveled fully to the left and immediately faulted. The trailing cable was found to be nicked, consistent with a known design vulnerability.

Solution: Technician identified error 0042-0117 as a carriage-system fault — potential causes included the damaged trailing cable, carriage board, carriage motor, carriage belt, or encoder strip. After investigation, the customer elected to replace the unit rather than proceed with repair.

Problem: HP LaserJet M506 in Golden, CO reported a paper feed failure — Tray 2 not lifting or picking paper.

Solution: Removed a corner-creased sheet concealed in Tray 2, replaced the Tray 2 pickup rollers, cleaned the printer, and verified feed operation through test prints.

Problem: An HP LaserJet M606x in Littleton, CO produced a persistent black line running vertically down each printed page.

Solution: Inspection revealed a fuser (RM2-6308) at 10% life remaining as the source of the black lines, with all paper path rollers heavily worn. The fuser was replaced on exchange, along with four pickup rollers (RM1-0036) and eight feed/separation rollers (RM1-0037). Post-replacement testing exposed a seco

Problem: HP LaserJet 4250 jammed and crumpled envelopes fed through the multipurpose tray.

Solution: Replaced the defective MP separation pad, which was catching and crumpling envelopes during feed. Cleaned and tested the printer to confirm proper envelope handling.

Problem: HP LaserJet M604n producing vertical marks straight down the page, with toner failing to bond and flaking off print stock.

Solution: Diagnosed fuser bonding failure on the M604n; fuser assembly was pulled and evaluated. After multiple service attempts, the customer opted to retire the unit in favor of an already-deployed replacement printer.

Problem: Lexmark MS610dn laser printer presented with heavy internal contamination, degraded pick tires in Tray 1, and unreliable paper handling.

Solution: Technician thoroughly cleaned the interior, replaced the Tray 1 pick tires, and tested the printer to confirm reliable paper feed and print quality.

Problem: An HP Color LaserJet M477fnw in Englewood, CO was producing print quality defects — recurring spots appearing across printed pages.

Solution: Technician ruled out the toner cartridges as the source of contamination and identified the fuser as the root cause. Fuser assembly RM2-6431-000CN was recommended for replacement.

Problem: HP Color LaserJet CP5525dn exhibiting severe fading image and a thick vertical line down printed pages. Fading persisted inconsistently across multi-page print jobs.

Solution: Replaced transfer belt (CE979A), secondary transfer roller, and tray 2/3 pickup and separation roller kit (CE710-69007). Thick line resolved after belt replacement, but fading continued. Technician brought the unit in-shop and swapped upper and lower high-voltage power supplies, scan disk chip, and

Problem: HP LaserJet M402dne in a warehouse environment was due for a scheduled preventive maintenance visit (3rd of 5 in the PM cycle).

Solution: Performed preventive maintenance on the HP LaserJet M402dne at page count 67,736. Cleaned internal components and tested printer to confirm proper operation.

Problem: HP Color LaserJet M880 MFP reporting error 13.B2.B1 — persistent paper jam flagged at the upper right door.

Solution: Replaced the MP assembly and six feed rollers (RM2-5642, RM1-9644-000CN MP Paper Pickup Assembly) from technician stock. Tested unit post-repair and confirmed normal operation.

Problem: HP Color LaserJet M775f MFP in Golden, CO was producing multi-stripe streaks across the top of printed pages.

Solution: Diagnosed streaking to a failing transfer belt and a fuser pressure roller that had shifted laterally off-center. Replaced the transfer belt kit (CE516A), fuser assembly (CE514A), and ADF maintenance kit (L2718A). Worn ADF and tray rollers were also replaced. Printer was cleaned and test-printed to

Problem: Lexmark C792 color laser printer reported for fuser replacement.

Solution: Replaced the fuser unit along with magenta and black toner cartridges. Verified operation through post-service testing.

Problem: An HP DesignJet T3500 wide-format plotter in Westminster, CO presented with a burning smell emanating from the unit during operation.

Solution: Diagnosed the odor to a failing power supply. Replaced the power supply unit, then cleaned and tested the plotter to confirm normal operation with no recurring smell.

Problem: HP DesignJet Z5600 plotter in Arvada would not initialize.

Solution: Technician diagnosed the failure and identified three depleted printheads as the root cause. Replacement printheads were sourced and installed, restoring normal initialization and operation.

Problem: Castle Rock customer required a new HP LaserJet M501dn laser printer with an additional paper tray and an extra toner cartridge.

Solution: Fulfilled order for an HP LaserJet M501dn, an additional paper tray, and a supplemental toner cartridge. All items shipped directly to the customer.

Problem: HP Color LaserJet M775 reported a 50.BF.00 fuser error accompanied by repeated jams in the top ADF feeder.

Solution: Technician replaced the fuser unit and installed an ADF maintenance kit to resolve the fuser fault and eliminate the feeder jams.

Problem: HP Color LaserJet M553 producing faded prints. Investigation revealed incompatible third-party toner cartridges leaking toner internally, causing image quality degradation.

Solution: Technician cleaned toner spill from printer interior and advised against powering the unit until OEM-compatible replacement cartridges were installed. Customer replaced all four toner cartridges; faded print issue was fully resolved upon confirmation.