Service History — Anaheim, CA — Page 2

Problem: HP Color LaserJet M553 arrived with toner spilled internally during shipping, causing the display to read 'Close Right Cover' and toner cartridges not to be recognized.

Solution: Repaired the right door closure mechanism to resolve the cover-open error. Swapped toner cartridges to verify functionality and confirm printing. Identified additional components required: all toner cartridges, ITB Kit B5L24-67901, Tray 2 pickup roller RM2-0062, and Tray 2 separation roller RM2-0064

Problem: HP LaserJet M602 reported a persistent clicking noise during operation.

Solution: Technician isolated the clicking noise to the cassette/tray holder assembly after ruling out the toner, fuser, and main printer body. All surfaces had existing lithium grease applied; the cassette holder (CE998A Tray 3) was identified as the required replacement to resolve the noise.

Problem: HP LaserJet Enterprise MFP M527f reporting Scanner Failure error code 30.03.30. Flatbed scanner confirmed failing; ADF rollers and Tray 2 pickup and separation rollers were worn.

Solution: Technician cleaned the drive assembly and reinstalled firmware with no change to the error. Replaced the flatbed scanner (F2A76-67909), ADF kit (RM2-5741-000CN pickup roller, RM2-5745-000CN separation roller), and Tray 2 rollers. Unit tested and returned to service.

Problem: HP LaserJet M527 producing vertical lines down pages during scanning operations.

Solution: Inspection revealed a mark on the slit glass causing vertical scan lines; glass was cleaned, eliminating the defect. A horizontal line traced to the ADF lead registration was also identified. Machine was cleaned throughout, and a replacement ADF unit (B5L47-6708) was sourced and left on-site pending

Problem: Lexmark CS820de producing double-image ghosting across printed pages.

Solution: Reviewed sample prints and confirmed fuser and transfer belt were serviceable. All four photoconductors showed approximately 300 pages remaining. Replaced the three color photoconductors with customer-supplied new units; a fourth customer-supplied unit was marked serviceable but had a visible scratc

Problem: HP Color LaserJet M476 reported recurring paper jams.

Solution: Technician replaced the paper feed roller assemblies and cleaned the paper path. Unit was tested and confirmed jam-free after service.

Problem: HP Color LaserJet MFP M680 presented with a severe paper jam the customer could not clear, with repeat jams occurring at the sorter entrance.

Solution: Inspection revealed a paper dent at the lead edge causing jams at the sorter entrance. Replaced the intermediate paper feed assembly (RM2-0216), paper delivery assembly (RM1-5615), Trays 2–5 roller kit (B3G84-67905), and ADF kit (L2725-60002). Jamming persisted due to high page count; a replacement

Problem: HP Color LaserJet Enterprise M578 MFP producing intermittent lines in print output. Error code 99.09.67 also present. Customer reported possible connection to low toner or a failing transfer belt.

Solution: Technician loaded firmware to address error 99.09.67 and configured the printer on a secured Wi-Fi network. Intermittent lines did not reproduce on-site. After toner was replaced and lines persisted, transfer belt (RM2-6576 / B5L24-67901, OEM) was identified as the corrective part and ordered. Issue

Problem: HP LaserJet Enterprise Flow MFP M830z scanner malfunctioning — scan-to-email function failing repeatedly despite firmware being current.

Solution: Technician dispatched to diagnose scan-to-email failures on the M830z. Issue was resolved by the customer prior to on-site service; work order cancelled, no repair performed.

Problem: HP LaserJet MFP M632h due for preventive maintenance as part of a multi-unit service visit at a Whittier, CA location.

Solution: Technician performed a full PM on the HP LaserJet MFP M632h at 350,500 pages, cleaning internal components and running functional tests to confirm normal operation.

Problem: Lexmark MX521ade MFP displayed sporadic control panel button failures during copy jobs, occasionally triggering unintended multiple copies.

Solution: Technician updated firmware on two separate visits; the fault could not be reproduced on-site either time. Suspected root cause was outdated firmware or a faulty copy/scan controller board. No further issues were reported after the final firmware update.

Problem: HP LaserJet M602dn due for preventive maintenance; paper feed rollers showing wear requiring replacement.

Solution: Performed full PM on HP LaserJet M602dn at 43,621 page count. Replaced Tray 2 pickup roller and Tray 2 feed/separation rollers. Cleaned and tested printer to verify proper operation.

Problem: HP LaserJet M608 reported with a non-functional internal lift mechanism in Tray 2, preventing paper from feeding.

Solution: Replaced Tray 2 roller kit (part J8J70-67904), cleaned the machine, and tested feed operation. Lift mechanism restored to full function.

Problem: HP Color LaserJet M578 producing black streaks on scanned and copied pages.

Solution: Technician identified a residue mark on the center of the scanner glass as the source of the streaking. Cleaned the scanner glass thoroughly; device tested streak-free with no additional issues found.

Problem: Multiple Lexmark laser printers and MFPs needed procurement and coordinated delivery across several office locations in the Placentia, CA area.

Solution: Sourced and shipped a multi-unit Lexmark fleet: five MB3442adw MFPs, two MB3442 extra trays, three MS821dn printers, four MS821 extra trays, and one MX521ade printer with additional tray — routed via multiple carriers to the appropriate destinations.

Problem: Customer requested installation of two new HP LaserJet M501dn printers to replace two older units, with driver setup and connectivity needed.

Solution: Installed two HP LaserJet M501dn units, replacing legacy printers. Transferred the MP tray assembly between two HP 2430 units to resolve a prior issue. Loaded drivers, tested print output on envelopes, check stock, and standard paper from all customer applications. Supplied a temporary USB cable for

Problem: HP LaserJet M604 was unresponsive with LEDs flashing on the display panel and would not process print jobs.

Solution: Technician power-cycled the printer, reseated the USB print cable, and restored normal operation, clearing the held print queue. Tray 2 separation roller was replaced and the unit was cleaned and tested from both the control panel menu and a connected workstation.

Problem: HP Color LaserJet Pro M570dn reported ADF malfunctions, with pages failing to feed through the automatic document feeder.

Solution: Technician found the ADF tray stuck in the down position, preventing document feeding. Tray mechanism was repaired and restored to normal operation. Inspection revealed accelerated ADF roller wear from continuous rubber-on-rubber contact, likely compounded by a dusty operating environment. Customer

Problem: Lexmark MS821 laser printer in Santa Ana displaying a recurring Service Print Head error message.

Solution: Based on a prior repair where an identical Print Head error on a Lexmark was resolved by moving the printer from an overloaded power strip to a direct wall outlet, the technician advised the customer to do the same. The customer indicated electricians were being scheduled to install additional outle

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 LaserJet M528 in Fullerton reported persistent paper jams from Tray 2, with pages folding at the corner on cycles without a full jam, and fuser jam error code 13.B9.D2.

Solution: Technician replaced the fuser (RM2-2585-000CN), separation roller (RM2-5745-000CN), and pickup rollers. Jam condition persisted from Tray 2 every 3rd–5th page; the root cause was traced to an inaccessible paper path behind the MP tray assembly — an area HP does not design for field service access. P

Problem: HP Color LaserJet 700 MFP M775 reported intermittent fuser issues. The unit did not fail during the initial visit, but the room environment was notably humid and the printer had no prior fuser replacement history.

Solution: Adjusted fuser temperature and humidity settings on first visit and verified toner adhesion. On a follow-up visit, replaced the fuser (CE514A) and substituted an APC LE600 voltage regulator for the existing surge protector. Event log review on a third visit confirmed no fuser High Temp 3 errors sinc

Problem: HP LaserJet M602 reached end-of-life page count threshold and required a preventive maintenance kit replacement.

Solution: Installed HP CF064A maintenance kit on the M602 at 270,645 page count, then reset the maintenance counter to restore normal operation.

Problem: HP Color LaserJet MFP M477fdw reported printing slightly skewed with magenta color registration misaligned.

Solution: Identified aftermarket toner as the root cause of color registration failure. Replaced magenta cartridge, performed multiple color calibrations, and executed an NV RAM reset. Reinstalled genuine HP toner across all stations; all colors and offsets aligned correctly. Cleaned the unit and advised the

Problem: HP Managed E87650 producing a loud, constant clicking noise from the bottom tray during print jobs — a recurring issue previously resolved in July.

Solution: Diagnosed noise to the Stapler/Stacker ejector unit (part no. JC90-01409A). Adjusted Ejector 1 assembly, which temporarily resolved the noise. After recurrence, the finisher unit was replaced in full by the OEM channel.

Problem: HP LaserJet MFP M830 displayed a 'Data Corruption Detected' error on-screen and would not boot up.

Solution: Technician updated the firmware on the HP LaserJet MFP M830 to address the data corruption error, then cleaned the machine and ran functional tests. The fault was intermittent; the unit was monitored over several days and confirmed stable before the call was closed.

Problem: HP Color LaserJet MFP M476dw reported recurring paper jams requiring a follow-up visit after initial parts procurement.

Solution: Technician diagnosed the jam condition on the HP CLJ MFP M476dw, ordered the necessary parts, and returned to complete installation once components arrived.

Problem: HP LaserJet Enterprise MFP M527f producing a grinding noise each time the ADF scanner was used.

Solution: Technician inspected the M527f, then cleaned the unit and replaced the ADF assembly (B5L47-67908), Tray 2 pickup roller (RM2-5741), and Tray 2 separation roller (RM2-5745). Operation tested and confirmed normal after service.

Problem: HP LaserJet 4250tn in Tustin, CA was due for a maintenance kit replacement.

Solution: A maintenance kit was sourced and shipped to the customer site. The customer installed the kit independently; no on-site technician visit was required.

Problem: Customer required a wireless-capable laser printer and needed to exchange a previously purchased HP LaserJet M404n for a wireless model.

Solution: Fulfilled exchange by sourcing an HP LaserJet M404dw. Unit was inspected — power cord, toner cartridge, and documentation verified present; foam packaging intact. Printer shipped to customer; M404n returned to inventory for resale.

Problem: Toshiba B-SX5T PM label printer in Brea, CA was due for scheduled preventive maintenance as part of an ongoing multi-unit PM cycle.

Solution: Performed preventive maintenance (PM 4 of 8) on the Toshiba B-SX5T. Cleaned interior components and tested print output. Unit is part of a scheduled PM rotation covering four Zebra ZM400 and four Toshiba B-SX5T printers.

Problem: HP LaserJet 4250tn reported recurring paper jams originating exclusively from Tray 3.

Solution: Technician located and removed folded paper stock lodged in Tray 3 that was binding the tray lift mechanism and preventing paper from feeding cleanly to the pickup roller assembly. Printer was cleaned and test-printed with no further jams.

Problem: HP LaserJet M602 reported producing loud gear noise during operation.

Solution: Inspection revealed the envelope feeder cover was improperly seated, causing gear interference. Technician re-seated the cover, cleaned the printer, and confirmed noise-free operation through test prints.

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: Brother MFC-L6900 reported toner smearing and poor toner bonding on output pages, with additional marks appearing along the sides of printed sheets.

Solution: Diagnosed two separate issues: side-of-page marks traced to a failing drum — replaced with a functional unit, eliminating the defect. Intermittent toner smearing, non-reproducible on the prior visit, was addressed by replacing the fuser assembly a second time. The device uses remanufactured toners w

Problem: Tustin business required a new HP Color LaserJet M479fdn MFP unit.

Solution: A new HP Color LaserJet M479fdn multifunction laser printer was sourced and shipped to the customer's Tustin location.

Problem: HP LaserJet 4350 reported recurring paper jams.

Solution: Diagnosed jam to a faulty Tray 2 solenoid (RK2-0269). Replaced the close-magazine solenoid and verified normal feed operation through multiple test prints.

Problem: HP LaserJet 600 M601 reported a maintenance kit level low alert and required a fuser replacement at 170,563 page count.

Solution: Replaced the fuser unit. Inspection revealed all three nudger rolls worn slick and the Tray 2 feed roll worn slick; replaced all nudger rolls and the Tray 2 feed roll. Remaining tray feed rolls were serviceable. Reset maintenance life counter. Test-printed supplies, configuration, and usage pages —

Problem: HP Color LaserJet M680 MFP in Santa Ana reported recurring ADF malfunctions; prior ADF kit replacement had not resolved the issue.

Solution: Replaced the ADF assembly. Unit was generating multiple 13.13.02 errors as anticipated. Reset the ADF counter, calibrated the scanner, and verified operation with several two-sided copy runs.

Problem: HP LaserJet MFP M630 reported making a loud grinding noise and repeatedly jamming from the manual feed tray (Tray 1), which was caught in a continuous pickup loop even when not in use.

Solution: Inspection confirmed the MP Tray 1 assembly was broken internally and cycling continuously. Technician replaced the MP Tray 1 pickup assembly (RM2-5822-000CN) and verified normal, noise-free operation after installation.

Problem: HP LaserJet M528 MFP reported error code 31.13.02 with a jam condition in the document feeder.

Solution: Technician cleaned the unit and identified a faulty ADF top door latch generating false jam errors. Quoted replacement of the ADF assembly (B5L47-67908), two Tray 2/3 pickup rollers (RM2-5741), and two Tray 2/3 separation rollers (RM2-5745). Customer elected to replace the device rather than proceed

Problem: OKI Microline 8480FB dot matrix printer experiencing intermittent multiform feed jams, with sheets catching and crinkling mid-feed while the print head continued cycling.

Solution: Technician performed a thorough cleaning of the paper path and feed components, cleared accumulated dust and debris throughout the mechanism, and cleaned and lubricated the gummed carriage rail. Printer tested successfully following service.

Problem: HP Color LaserJet CP4525 in Tustin, CA required cleaning and was found to have a failed fuser, worn tray 2 feed rollers, and a defective black and cyan toner cartridge.

Solution: Replaced the fuser, installed two new tray 2 feed rollers (RM1-0037), and swapped the defective black and cyan toner cartridges. Cleaned and tested the printer to confirm full operation.

Problem: HP Color LaserJet M554dn emitting a squeaking noise traced to the output bin area, with the exact source difficult to isolate.

Solution: Reseated the ITU, fuser, and all toner cartridges. Cleaned and tested the printer; the squeaking noise resolved after reseating the internal components.

Problem: HP Color LaserJet M454dw would not print after a laptop was dropped on the multipurpose tray, breaking the front cover assembly and internal tray arms.

Solution: Diagnosed physical damage to the MP tray front door assembly and mounting arms. Arms are integrated into the chassis and not available as a standalone part; sourced a replacement front door assembly (RM2-1823-000CN) and arranged installation. Customer was advised to swap the unit with another locati

Problem: HP LaserJet 8100 on the production floor reported degraded print quality requiring a transfer roller replacement and toner replenishment.

Solution: Replaced the transfer roller (RF9-1394) and installed a C4182X toner cartridge sourced from a parts unit. Print quality verified through post-service testing.

Problem: HP Color LaserJet MFP M477fdn producing red streaks, faded red tones, and light yellow output across printed pages.

Solution: Diagnosed magenta cartridge at 30% life as the source of red streaking and color fading; yellow cartridge at 40% life was printing light. Both cartridges flagged for replacement. Printer cleaned and tested. Replacement yellow and magenta toner cartridges were overnighted to the customer site for ins

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 required installation of a new HP Color LaserJet MFP M577 and removal of the existing unit from the Costa Mesa location.

Solution: Installed HP Color LaserJet MFP M577 (268,669 page count at intake), connected to the network, tested for full functionality, and removed the previous unit from site.

Problem: HP LaserJet P3015dn producing blue smearing down the right side of printed pages on check stock.

Solution: Inspection confirmed smearing originated from blue ink on check stock, not a fuser defect. Removed blue tape and a paper clip found in the paper pathway. Fuser film verified intact. Reduced fuser heat to Low 1 for plain-paper mode to prevent ink spread; toner bonded correctly to check stock at reduc