Service History — Los Angeles, CA

Problem: HP LaserJet M631 producing smeared toner on printed output.

Solution: Inspection revealed a nearly depleted toner cartridge depositing clumped, caked toner onto pages. Replaced the cartridge from the customer's on-site stock and tested the printer to confirm clean output.

Problem: HP LaserJet M507n exhibiting toner adhesion failure when printing on heavy card stock from the MP tray — image peeling after approximately ten pages, while output on plain paper appeared normal.

Solution: Technician replaced the fuser assembly (RM2-2585), MP tray pickup roller and separation pad (F2A68-67914), tray 2 pickup roller (RM2-5741), and tray 2 separation roller (RM2-5745). A refurbished fuser did not fully resolve the adhesion issue, and a tested OEM fuser was sourced. The customer ultimate

Problem: HP Color LaserJet M553 in El Monte presented with worn roller components across multiple paper trays, flagged during a scheduled preventative maintenance visit.

Solution: Technician performed scheduled maintenance on the HP Color LaserJet M553. Inspection identified worn tray roller assemblies; Tray 2 roller kit (RM2-6577) and Tray 1 roller kit (B5L24-67905) were sourced and installed, restoring proper paper feed operation across both trays.

Problem: HP Color LaserJet CP4525xh presented a 59.F0 error code, indicating a fuser drive motor failure.

Solution: Diagnosed 59.F0 fuser drive fault on the CP4525xh. Sourced and installed replacement fuser drive assembly (RM1-5656). Initial replacement unit was defective and exchanged under warranty; confirmed-good replacement installed, printer cleaned and tested, then returned to the customer site.

Problem: HP LaserJet MFP M527 displayed a 99.09.64 error, indicating a hard drive failure requiring replacement and firmware reload.

Solution: Replaced the failed hard drive, reloaded firmware, and reconfigured fax and host settings. Fax arrival notifications were disabled per the customer's preference; that setting is no longer available from the front panel and must be managed from a PC.

Problem: Carson, CA business required a new Lexmark MS821n monochrome laser printer procured, delivered, and installed at their corporate office location.

Solution: New Lexmark MS821n unit was sourced, received, transported to the customer site, and fully set up on-site at the second-floor executive hallway.

Problem: HP LaserJet 1606dn reported jamming at a Torrance, CA office.

Solution: Technician replaced the RL1-1497 Pickup Roller and RM1-4207 Separation Pad. Unit was reassembled and tested with jams cleared.

Problem: HP Color LaserJet MFP M479fdn producing blue splotches along the right side of printed pages.

Solution: Diagnosed a failing cyan toner cartridge at approximately 20% life remaining that was spilling excess toner onto pages. Installed a customer-supplied replacement cyan cartridge, then cleaned and tested the printer to confirm clean, accurate output.

Problem: Lexmark MS810 laser printer in Torrance, CA was experiencing repeated paper jams disrupting normal print operations.

Solution: Replaced the maintenance kit and multipurpose tray pickup roller on the Lexmark MS810. Cleaned internal paper path components and tested to confirm jam-free operation.

Problem: HP LaserJet MFP M632 in Pomona, CA reported poor scan output quality.

Solution: Identified a defective toner cartridge as the root cause despite it reading 100% life remaining. Replaced the cartridge, cleaned the unit, and verified scan quality through testing.

Problem: HP LaserJet M632 reporting error 81.09.00 and unable to scan. Unit later presented a 49.38.0C communication error on subsequent visit.

Solution: Technician performed TPM disable, cold reset, and hard drive erase. On follow-up, replaced formatter board (J8J61-60001), disabled TPM, loaded firmware v4.11.2.3, formatted disk, reloaded firmware, and initialized to factory setup. Machine cleaned and returned to network.

Problem: HP LaserJet MFP M633 in Beverly Hills presented with a 49.38.0c error, indicating a firmware fault or hard drive failure.

Solution: Technician cleaned the machine, replaced the failed HDD and Tray 2 pickup rollers, updated firmware, and tested the unit to confirm full operation.

Problem: HP Color LaserJet M551 presented with print quality defects requiring internal inspection and component evaluation.

Solution: Cleaned the machine and identified a failed transfer belt assembly (CF081-67904) and toner collection unit (CE254A). Replaced both components and tested the printer to confirm restored output quality.

Problem: HP Color LaserJet 4730 MFP producing dirty copies with a black line, background contamination, and envelope seam impressions bleeding through to the printed side.

Solution: Cleaned the glass and ADF rollers, clearing the black line and background. Isolated the envelope seam impression to the fuser — at 60% life with an unknown service history, it exceeded the 50-month/150,000-impression service limit per the HP manual. Swapped in a test fuser and replacement black tone

Problem: HP LaserJet M602 presented for scheduled preventive maintenance requiring a full maintenance kit replacement.

Solution: Installed a complete maintenance kit on the HP LaserJet M602 at 335,474 page count. Cleaned internal components and performed post-installation testing to confirm proper operation.

Problem: HP LaserJet MFP M635 reported jamming and crumpling paper across multiple trays, with intermittent jams from tray 2 (wristband labels) and tray 4 (plain letter stock).

Solution: Error log confirmed recurring jams from trays 2 and 4. Inspection revealed worn pickup rollers in both trays. Replaced rollers in all three paper trays as a preventive measure, then cleaned ADF rollers and scanner glass. All trays tested and confirmed jam-free.

Problem: Canon imagePROGRAF iPF670e wide-format plotter presenting persistent printhead issues that continued after the customer had replaced the printhead and maintenance cartridge multiple times.

Solution: Technician performed on-site diagnosis on the Canon iPF670e. After thorough evaluation, the root cause could not be isolated to a specific replaceable component, and the repair scope was indeterminate. The customer was advised of the findings; no charge was assessed for the service call.

Problem: Lexmark MS810 laser printer reported fuser malfunction at a Compton, CA location.

Solution: Maintenance kit ordered and installed on the Lexmark MS810/MS811. Technician reset the fuser system, cleaned internal components, and tested the printer to confirm proper operation.

Problem: IBM Infoprint 1552 reported melted paper adhered to internal rollers, with the unit displaying error code 80 (maintenance required).

Solution: Powered down the Infoprint 1552 and removed the fuser assembly. Inspection revealed the fuser heat roll beginning to peel. Quoted and received approval for a 115V maintenance kit (IBM 39V2598 / Lexmark 40X0100) to restore the unit to working order.

Problem: HP Color LaserJet M775 fax function inoperative — incoming faxes not received despite firmware update and NIC card installation.

Solution: Tested fax line with an analog phone; no ring detected when the number was dialed, though a signal was present when the handset was lifted, indicating a possible line voltage issue. Technician recommended the customer engage their phone carrier to evaluate the fax line. Fax card replacement identifi

Problem: HP LaserJet M609dn in Glendale producing ghost images on printed pages and displaying 'Load plain letter in tray 1' error.

Solution: Cleaned the transfer roller, which eliminated the ghosting artifact. Corrected tray 2 media settings from bond/letter to plain/letter. Follow-up confirmed image quality remained normal after the service visit.

Problem: HP Color LaserJet CP2025 reported recurring paper jams originating from Tray 2.

Solution: Cleaned the CP2025 and inspected feed path. Identified worn Tray 2 rollers; replaced the Tray 2 separation roller (RM1-4840) and pickup roller (RM1-4426). Tested feeding from Tray 2 and confirmed jam-free operation.

Problem: A Lexmark T640 laser printer, one of a fleet of approximately 12 recently purchased units, required inspection to confirm operational readiness.

Solution: Technician cleaned internal components and paper feed rollers of dust accumulation, then tested the unit to verify proper function. Page count was recorded at 77,509.

Problem: HP Color LaserJet M880z MFP reported a large amount of cyan toner spilled internally, triggering an error condition and requiring full cleaning.

Solution: Replaced the defective cyan toner cartridge and all eight feed/separation rollers. Thoroughly cleaned toner contamination throughout the machine and tested to confirm normal operation.

Problem: HP LaserJet MFP M631 in Anaheim displayed persistent error 31.03.37 (Pick Sensor Warning) alongside a loud groaning noise and worn tray 2 feed components.

Solution: Replaced ADF assembly (p/n 5851-7204) and tray 2 pickup roller/separation roller kit (p/n J8J70-67904). Installed a known-good used fuser, which eliminated the groaning noise. Cleaned and tested unit; error and noise resolved.

Problem: HP LaserJet M608 reported making noise during operation. Customer also noted the display had previously inverted orientation and rendered in black and white.

Solution: Inspected fuser and drive gears — no damage found. Identified remanufactured toner cartridge (at 30%) as noise source; cleaning blade produced audible catching during imaging unit rotation. Replaced toner cartridge, eliminating the noise. Updated firmware to current release to address intermittent d

Problem: HP Color LaserJet Pro MFP 4301 in Pasadena reported an unresponsive touch screen, required repeated login prompts before each scan job, and defaulted to duplex printing regardless of driver settings.

Solution: Firmware update resolved the touch screen malfunction. Scan login credentials were configured as persistent via the printer's web interface. A driver reload was initiated to correct the forced duplex output.

Problem: Lexmark XM5365 in Carson, CA was shredding and destroying documents fed through the ADF.

Solution: Installed a new ADF roller kit on the Lexmark XM5365. Cleaned the ADF assembly and tested the unit to confirm proper document feeding without damage.

Problem: HP LaserJet Flow MFP M630 reporting error 13.B9.FF — recurring jam in output area that resumed immediately after clearing.

Solution: Multiple power cycles and component reseating performed; all input trays ruled out as the source. Additional error codes 13.C3.A2, 13.FF.FF, and 48.05.05 observed. Fault was isolated to the stacker assembly after confirming the same failure on a second unit. Stacker assembly with stapler (B3M76A) re

Problem: A Brother MFC-9340CDW in Compton, CA was reported as completely unresponsive — the unit would not power on at all.

Solution: The technician powered the unit on, confirmed ready status, and printed test pages from the menu without issue. The printer was cycled on and off repeatedly throughout the day, then left unplugged overnight. It powered on and printed normally the following morning with no faults detected.

Problem: HP LaserJet M525 in Santa Ana reported non-functional fax capability. The unit required a full power cycle each morning before operating, and the ADF failed to feed documents during fax attempts, triggering an error code and canceling the job.

Solution: Diagnosed faulty fax card (CF206-60001 Fax Card PCA) on the HP LaserJet M525. Replacement of the fax card PCA resolved the ADF feed failure and recurring error codes that were forcing daily power cycles.

Problem: OKI C331 laser printer brought in for a PM3-level preventive maintenance service.

Solution: Performed PM3 preventive maintenance on the OKI C331, including full internal cleaning. Unit was tested and confirmed operational upon completion.

Problem: HP LaserJet M608 producing unclear output on the bottom half of printed pages; issue persisted after substituting an alternate toner cartridge.

Solution: Diagnosed a worn fuser as the root cause of the image quality defect. Installed a new main maintenance kit (L0H24A), transferred the plastic sleeve from the old fuser to the replacement unit, reset the maintenance kit counter, and verified print quality through test output.

Problem: HP LaserJet M527 ADF gears producing a grinding noise during document feeding operations.

Solution: Replacing the ADF roller did not resolve the grinding. The full ADF assembly (HP part B5L47-67906) was installed and the unit was tested and confirmed operational.

Problem: Lexmark MS821dn reported repeated paper jams originating from the multipurpose feeder, with the envelope feeder jamming during addendum print jobs.

Solution: Replaced the multipurpose separator pad assembly (part #41X1638) on the Lexmark MS821dn. Cleaned the feed path and feed rollers, then tested the printer to confirm jam-free operation.

Problem: HP Color LaserJet M451 reported a persistent squeaking noise traced to the black toner cartridge at approximately 20% remaining life.

Solution: Removed the defective black toner cartridge and installed a customer-supplied replacement. Cleaned the printer and verified quiet, normal operation through testing.

Problem: HP Color LaserJet M452dn required delivery and setup to replace an existing M451dn unit at an Ontario, CA office location.

Solution: Tested the HP CLJ M452dn prior to delivery. Removed recertified labeling from the unit, delivered without original box, and left the printer in protective plastic with installation CD and setup instructions included. Unit was staged in the designated office as directed.

Problem: HP LaserJet MFP M830 in Glendale, CA presented error code 30.03.45 (Scanner Failure) at every boot, with color lines appearing on the control panel display.

Solution: Diagnosed 30.03.45 as flatbed-related rather than scanner control board. Replaced flatbed scanner (B3G84-67912) and control panel (CF367-67919). Tested all functions after installation.

Problem: HP LaserJet M602n reported a 50.7F.00 fuser error, indicating a fuser failure requiring component replacement.

Solution: Replaced the fuser assembly (HP RM1-8395) on the M602n. Cleaned the printer, tested operation, and confirmed the 50.7F.00 error was cleared with the unit returned to full working order.

Problem: Customer in El Monte, CA required a new Lexmark MS821dn laser printer with two additional paper trays for their accounting department.

Solution: Arranged procurement and direct shipment of a Lexmark MS821dn monochrome laser printer with two supplemental paper trays to the customer's El Monte location.

Problem: A Santa Monica business required five HP LaserJet Enterprise M507n laser printers for their office environment.

Solution: Five HP LaserJet Enterprise M507n units were sourced and shipped directly to the customer in two separate shipments: one unit delivered Friday, four units delivered the following Monday.

Problem: HP LaserJet P2055dn reported recurring paper jams with double-feed failures.

Solution: Technician diagnosed double-feed issues on the HP LaserJet P2055dn (page count: 2,720). Inspection identified worn pickup roller (RM1-6414) and separation pad (RM1-6397) as the root cause. A replacement quote was submitted; the customer ultimately elected to replace the unit rather than proceed with

Problem: HP LaserJet M3035 MFP in Santa Monica halted with a persistent 50.6 Fuser Error, preventing the printer from completing its startup cycle.

Solution: Replaced the fuser assembly (RM1-3717), Trays 2 & 3 pickup rollers (RM1-3763), and Trays 2 & 3 separation pads (RM1-3738). A toner cartridge at 95% life was found to be causing a separate image-quality defect and was exchanged under warranty.

Problem: Xerox VersaLink C405dn reported a persistent paper jam error message at a Los Angeles location.

Solution: Technician cleared active jams and identified worn feed tires as the root cause. A replacement estimate was provided; the customer did not respond, and the call was closed pending approval.

Problem: HP LaserJet M880 displayed error code 10.00.91. Investigation revealed three remanufactured toner cartridges installed, two of which had leaked and seized, triggering the 10-series supply errors.

Solution: Cleaned toner contamination from the printer interior using a toner vacuum. Replaced the black and cyan drum units with OEM drums. Swapped all remanufactured toner cartridges for HP OEM cartridges. Cleaned scanner glass and verified normal operation.

Problem: HP LaserJet 4250 (Q5403A) reported crinkling paper and jams at the fuser/exit area, accompanied by grinding noise.

Solution: Printed configuration page, which initially output syntax code; rebooted to clear and confirmed paper creasing. Firmware was found at the original 2005 out-of-box level. Replaced swing plate (RM1-0043-060) and upgraded firmware. Post-repair testing showed intermittent creasing traced to multiple ope

Problem: HP LaserJet Enterprise M506 reported ghost images on printed output, with an underlying bumping noise occurring during print cycles.

Solution: Technician diagnosed ghost imaging traced to an incorrectly installed fuser kit. Original fuser was reinstalled, eliminating ghost images and resolving the bumping noise. Worn tray rollers were identified as the likely source of the mechanical noise.

Problem: HP LaserJet 8150N in Inglewood, CA reported a persistent 50.2 fuser error. A fuser had recently been replaced, yet the error remained.

Solution: Technician reseated the fuser, cycled power, and tested alternate power outlet and cord. With the fault unresolved, the LVPS (RG5-4357) was replaced. The printer cleared the 50.2 error and returned to normal operation.

Problem: HP LaserJet P4015dn at Hawthorne, CA location experiencing repeated paper jams originating from the third tray.

Solution: Replaced pickup rollers and feed rollers in trays 2 and 3 (two pickup rollers, four feed rollers total). Cleaned and tested printer. A defective toner cartridge at approximately 90% remaining life was identified as causing image smearing; a warranty replacement cartridge was arranged.

Problem: HP Color LaserJet CM3530 MFP reported fuser life at 3%, indicating imminent end-of-life failure.

Solution: Replaced the fuser unit and reset the page count. Cleaned rollers and scanner glass, then tested the unit to confirm proper operation.