Service History — Alexandria, VA

Problem: HP DesignJet Z6600 wide-format plotter displaying error code 86.01, indicating a carriage belt fault.

Solution: Technician disassembled the unit to carriage level, corrected a customer-attempted belt installation that had been performed incorrectly, and restored proper belt routing and tension. After reassembly and functional testing, multiple faulty printheads were identified; the customer elected to source

Problem: HP Color LaserJet Flow MFP M880 producing black spots on printed output, with paper jams occurring during print jobs and Tray 5 non-operational.

Solution: Replaced black drum unit from customer stock, alleviating spots. Installed new transfer kit (D7H14A) and ADF kit (C1P70A), and replaced Tray 5 rollers. Cleared firmware error code 46 by downloading and applying updated firmware via flash drive. Tested all functions to confirm normal operation.

Problem: Zebra ZD411 thermal printer would not power on. Technician confirmed the power cable was functional by testing it on a second unit.

Solution: On-site inspection of the Zebra ZD411 confirmed a no-power condition. Because the ZD411 uses a clamshell design integrating the power supply and mainboard into a single assembly, the main logic board (part # P1117258-013) was identified as the required replacement. A quote was provided; the customer

Problem: HP LaserJet 4015 at a nurse station was failing to feed labels correctly from Tray 3. The tray's rear tab was broken, causing persistent label-feed errors.

Solution: Tray 3 (RM1-4559 cassette) was temporarily secured with a tie strap pending parts. Once the replacement tray and maintenance kit (CB388A) arrived, both were installed, the page-count reset, and feed operation was verified. Maintenance kit had been at 5% remaining.

Problem: Zebra ZT410 thermal printer in Annapolis experiencing label feed failure due to a broken printhead toggle bar.

Solution: Technician replaced the printhead toggle bar (part P1058930-018, includes lift strap) on the Zebra ZT410 and verified no additional mechanical issues. Customer was advised that printer configuration and operation are governed by upstream production/PLC systems, requiring a PLC programmer for any non

Problem: HP LaserJet M602 emitting a high-pitched squeaking noise during operation.

Solution: Technician cleaned the unit and ran individual component tests, isolating the squeak to the fuser via test mode. Replaced the fuser maintenance kit (CF064-67902); squeak persisted in fuser test mode only. On a follow-up visit, replaced the fuser drive assembly (RC2-2432) and applied grease to the as

Problem: Zebra ZT510 thermal printer in Arlington, VA reported a persistent media-out error despite media being loaded.

Solution: Technician found media guides misaligned, sensors out of position, and print speed set too high for the label stock in use. Adjusted guides, repositioned sensors, and corrected speed settings. Tested and confirmed proper operation.

Problem: Zebra ZT510 (ZT51042-T010000Z) brought in for preventive maintenance; condition had degraded on the facility's highest-use thermal printer.

Solution: Performed full PM on the ZT510. Replaced 203 DPI printhead (P1083347-005), platen roller (P1083347-012), and belt (P1083347-017). Unit tested and returned to service.

Problem: Zebra 105SL thermal printer reported missing image on the right side of printed output.

Solution: Technician reseated the flex cable on the printhead, restoring full-width image coverage across the print zone. Unit tested and confirmed operational.

Problem: Zebra ZT230 thermal printer in a machining environment was outputting blank labels and displaying a 'Media Out Load Media' error.

Solution: Sensor type was misconfigured as 'Transmissive' instead of 'Reflective' for the notched media in use. Technician corrected the sensor setting, performed a full media/ribbon calibration, repaired a broken tab on the media roll back cover with adhesive, deep-cleaned oil contamination throughout the un

Problem: Zebra ZT230 300 dpi thermal printer in a warehouse environment required preventive maintenance, including media creasing and printhead/roller condition assessment.

Solution: Performed full PM service on the Zebra ZT230 300 dpi unit. Adjusted media pressure to eliminate creasing, cleaned internal components, and inspected printhead and roller condition. Unit tested and closed out.

Problem: HP LaserJet M4345 MFP required hard drive removal and device decommission prior to being taken off-site.

Solution: Technician removed the hard drive from the HP LaserJet M4345 MFP, packaged it per the standard hard drive removal procedure, and removed the MFP from the customer's Reston, VA location per the customer's request.

Problem: HP LaserJet MFP M635 reported recurring paper jams originating from Tray 3.

Solution: Reseated the Tray 3 slide rail, cleaned the printer, and tested feed operation. Tray closes and feeds correctly with no further jamming.

Problem: Zebra 105SL Plus intermittently split print images across adjacent labels; remaining labels printed correctly before the fault recurred. Labels also exhibited excessive blur.

Solution: Technician found a prior manual media pull had triggered a media/ribbon calibration, resolving the label-skipping. Darkness setting adjusted from 11 to 10, eliminating label blur. Printer tested and confirmed operational at close of call.

Problem: HP DesignJet Z3100 24" reported intermittent noise, a historical 71:03 memory/communication error, and degraded print quality across multiple colors.

Solution: Reviewed error log; most recent fault was a June 2018 71:03 warning with no active error present. Diagnostics image revealed multiple color failures. A third-party remanufactured green ink cartridge was identified and swapped for an OEM cartridge; three printheads with the worst output were removed

Problem: Waldorf, MD customer required procurement of a new HP LaserJet M553n color laser printer.

Solution: A new HP LaserJet M553n was sourced and shipped to the customer's location, with delivery confirmed.

Problem: HP LaserJet P4015 reported persistent lifter motor 60 errors and a broken paper detect sensor flag, with damaged tray guides affecting multiple cassette trays.

Solution: Replaced feed rollers using customer stock. Diagnosed lifter motor 60 errors confirmed across multiple trays, traced to faulty lifter drive assembly (RM1-4585-000CN), which was replaced. Broken paper detect sensor flag identified; part unlisted in manual parts identification. Self-tapping steel scre

Problem: HP LaserJet MFP M725 in Falls Church, VA was producing visible lines on copies.

Solution: Cleaned the scanner glass to eliminate copy lines, then replaced the maintenance kit (CF249A) and reset the page count. Unit was tested after service; maintenance kit was at approximately 20% remaining prior to replacement.

Problem: Three front-panel buttons on a Zebra ZT410 thermal printer were completely unresponsive, preventing operator access to printer controls.

Solution: Replaced the control panel (P1058930-001) and main drive belt (79866M), which showed significant wear with belt shavings accumulated inside the unit. Cleaned and tested printer to confirm full functionality.

Problem: HP Color LaserJet M452 in Manassas, VA presented with a 59.F0 error and would not complete the boot sequence.

Solution: Diagnosed 59.F0 error as a failed transfer belt (RM2-6454). Initial replacement belt produced monochrome output only due to misaligned cams sustained in shipping. A second new transfer belt was installed, restoring full-color output. Printer tested and confirmed operational across all color channels

Problem: Zebra 4M+ thermal printer producing labels with missing text — one unit among four in the fleet reported the defect.

Solution: Technician identified insufficient printhead pressure as the cause of faded, incomplete label output. Adjusted printhead pressure to restore full print density; platen roller replacement identified as a required next step.

Problem: HP LaserJet 2430n in Fairfax, VA reported a recurring Service Error 30. Error logs also revealed a history of 49 errors.

Solution: Technician cleaned the printer and ran test prints. No active Error 30 conditions were found. Logged 49 errors were attributed to a problematic print driver or incompatible print jobs. Tray 2 pickup roller and separation pad were inspected and found in good condition.

Problem: Lexmark MS810dn (Source Technologies ST9730) MICR printer in Rockville, MD reported intermittent paper jamming. Unit had only 298 total pages on the page count.

Solution: Technician performed a thorough internal cleaning of the MS810dn MICR unit. Following service, the printer operated without jams or faults.

Problem: Zebra ZT230 (ZT23043-T31200FZ) in Rockville, MD reported intermittent label sensor failures and the unit hanging during internal print jobs.

Solution: Unit was processed under a PM40 warranty send-off. Label sensor faults and print job hang issues were documented and the printer was dispatched for depot-level warranty service.

Problem: Customer required a new Zebra ZT410 industrial thermal printer for their Bethesda, MD location.

Solution: A new Zebra ZT410 industrial thermal label printer was sourced and shipped to the customer's location.

Problem: HP LaserJet M608 in McLean, VA reported slow print output and recurring paper jams.

Solution: Replaced the fuser unit with a maintenance kit supplied to the site. Cleaned the printer internally, tested for proper operation, and left the defective fuser on site for return to the supplier.

Problem: Zebra 105SL Plus thermal printer presented with a worn pressure roller requiring replacement as part of a PM43 service interval.

Solution: Technician replaced the pressure roller and platen roller (CG G41011M), then verified no additional issues were present on the 105SL Plus.

Problem: HP Color LaserJet MFP M477fnw in Leesburg, VA reported a persistent jam error.

Solution: Technician inspected all paper path areas; no physical jam was present. Fault was attributed to a likely fuser sensor issue. Customer was advised that a unit replacement was already in progress.

Problem: Zebra 105SL thermal printer producing a white vertical line in printed output, indicating a failed printhead element.

Solution: Cleaning the printhead did not resolve the white vertical line. The printhead — last replaced in November 2017 — was swapped from stock and the unit was tested and confirmed printing correctly.

Problem: Zebra ZT410 thermal printer reported a worn platen roller requiring replacement. One of four units on-site was affected.

Solution: Technician diagnosed a failed platen roller (P1058930-080) on the Zebra ZT410 and replaced the component to restore full print operation.

Problem: Lexmark MS810 laser printer in Manassas, VA reporting error code 31.80, indicating a fuser installation fault.

Solution: Technician reseated the fuser unit on the Lexmark MS810, clearing error 31.80 and restoring normal print operation.

Problem: HP LaserJet MFP M682 producing severely off-color output with recurring error 54 codes. Calibration attempts and an engine reset failed to correct the issue.

Solution: Installed a remanufactured transfer kit, which did not reset the page count and only partially corrected color registration. Replaced with an OEM transfer kit (P1B93A), which fully restored color balance and cleared the error 54 faults.

Problem: Zebra ZT510 203 dpi thermal printer in Silver Spring, MD was due for its scheduled quarterly preventive maintenance service.

Solution: Technician performed quarterly PM on the Zebra ZT510 203 dpi unit: cleaned the printhead and platen roller, inspected drive belts and gears, and verified print quality before returning the printer to service.

Problem: Zebra GX430t thermal printer in Springfield, VA was due for scheduled preventive maintenance as part of an ongoing service cycle.

Solution: Technician performed preventive maintenance on the Zebra GX430t, cleaning internal components, reconfiguring the printer, and repairing the cutter mechanism.

Problem: Dell 5130CDN laser printer in Bethesda, MD reported as not functioning correctly, with suspected paper jamming and intermittent feed issues across multiple trays.

Solution: Fuser found set to envelope mode; confirmed fuser was operational. All paper feed rollers replaced across three trays using Dell RG399 roller sets. Black drum identified as low and flagged for customer replacement. Investigated third-party toner cartridge triggering a persistent replace-toner messag

Problem: HP LaserJet E52645 ADF pulling multiple pages simultaneously, causing multi-feed jams during document scanning and copying.

Solution: Cleaned the machine and diagnosed worn ADF feed rollers as the root cause. Installed a B5L52A ADF Kit to restore single-sheet feed operation.

Problem: Zebra ZM400 thermal printer in Silver Spring, MD was due for a Level 2 preventive maintenance service.

Solution: Technician performed a PM Level 2 service on the Zebra ZM400, thoroughly cleaning the interior of the unit and conducting post-cleaning functional testing to verify proper operation.

Problem: Zebra 105SL (model 10500-3001-2000) in Fairfax, VA reported faulty peel-off (take-label) sensors requiring replacement as part of a PM3 service.

Solution: Replaced the take-label sensor kit on the Zebra 105SL 10500-3001-2000. Cleaned the unit thoroughly and verified correct operation through post-repair testing.

Problem: HP LaserJet 600 M602 in McLean, VA reported due for maintenance kit replacement at 225,618 page count.

Solution: Installed HP LaserJet 600 M602 fuser maintenance kit, reset the page counter, cleaned the machine, and verified operation through test prints.

Problem: Datamax H Class thermal printer reported requiring calibration at a Rockville, MD business.

Solution: Technician calibrated the media and gap sensors on the Datamax H-8308X and verified print registration through functional testing.

Problem: Dell CLJ 3000 color laser printer in Leesburg, VA producing faded color output, with further inspection revealing intermittent vertical voids across printed pages.

Solution: Technician diagnosed a failing high-voltage power supply with sporadic voltage fluctuation and degraded contacts. Given the age and carousel-based design of the unit, replacement was recommended over further repair. Customer approved the recommendation; an HP Color LaserJet M452nw was delivered, dri

Problem: Zebra 170Xi4 industrial thermal printer presented for the sixth scheduled preventive maintenance visit, with ribbon and label rolls found loaded incorrectly.

Solution: Technician corrected ribbon and label roll loading, demonstrated proper media loading procedure to the operator, performed a full interior cleaning, and tested the unit to confirm normal operation.

Problem: Zebra S4M thermal printer in McLean, VA required platen roller replacement.

Solution: Technician replaced the worn platen roller on the Zebra S4M, then cleaned the unit and verified proper operation through test prints.

Problem: Zebra GX430t thermal label printer in Leesburg, VA was due for its second scheduled preventive maintenance visit in a four-part service cycle.

Solution: Technician performed scheduled preventive maintenance on the Zebra GX430t at 303,350 inches of use, including thorough cleaning and configuration of the printer.

Problem: HP LaserJet M606 fuser unit required replacement at a Falls Church, VA business.

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

Problem: HP LaserJet M605 reported recurring paper jams.

Solution: Technician cleared a paper jam from behind the MP tray assembly on the HP LaserJet M605, then cleaned the paper path and verified normal operation through test prints.

Problem: Zebra 105SL thermal printer presented with a vertical line in print output and labels jammed in the media path.

Solution: Cleared jammed labels from the media path. Replaced the printhead with a cleaned, tested unit from customer stock. Printer tested and confirmed printing cleanly with no line artifacts.

Problem: Zebra 105SL (model 10500-2001-0070) submitted for scheduled preventive maintenance as part of a multi-unit PM cycle.

Solution: Performed PM service on the Zebra 105SL, including full cleaning and adjustment of the head-close sensor. Unit tested and confirmed operational before return.

Problem: HP Color LaserJet M880 MFP reported repeated paper jams occurring in the ADF.

Solution: Replaced the ADF kit on the HP CLJ M880 MFP, then cleaned and tested the assembly to confirm reliable document feeding.

Problem: Lexmark MX310dn in Arlington, VA reporting a persistent Bin Full error, preventing normal print output operations.

Solution: Replaced the upper redrive assembly (part 40X9077) and pick tires for Tray 1 (41X0918) and Tray 2 (41X0958). Cleaned and tested the printer to confirm full functionality restored.