Service History — Simi Valley, CA — Page 2

Problem: Zebra ZM400 thermal printer was due for a scheduled preventive maintenance visit (3 of 6 in the service cycle).

Solution: Performed preventive maintenance on the Zebra ZM400. Cleaned internal components and conducted full operational testing to verify print quality and mechanical function.

Problem: Zebra GX430t thermal printer due for scheduled preventive maintenance, including cutter repair.

Solution: Performed PM on Zebra GX430t (451,921 inches logged). Cleaned internal components, calibrated printer settings, and repaired the cutter assembly.

Problem: HP LaserJet M605n reported generating loud mechanical noise during operation.

Solution: Technician replaced the fuser assembly (RM2-6308), swing plate assembly (RM2-6321), Tray 2 pickup roller (RM2-6046), and two Tray 2 feed rollers (RM2-5642). Post-service inspection via customer-submitted video confirmed residual noise originating from the paper delivery assembly (RM2-6319), attribut

Problem: Honeywell PX940 (203 dpi) reported light print output.

Solution: Inspected printhead, which was barely firing. Replaced printhead and platen roller. Discovered ribbon feed was disabled in settings; re-enabled it, but machine displayed 'Out of Ribbon' error. Investigated ribbon sensor and feed assembly across two units. Root cause identified: ribbon was loaded in

Problem: Zebra ZT610 industrial thermal printer in a production area reported occasional label separation from the media sheet during printing.

Solution: Performed scheduled preventive maintenance on the ZT610. Cleaned internal components, adjusted the media roll, and tested print output. Identified improper flat-stack label routing as the cause of label pulloff; demonstrated correct routing over the media roll spindle to on-site staff.

Problem: Zebra ZT510 (300 dpi) reported printhead errors. Inspection revealed a broken printhead ribbon cable, missing pivot bar and toggle, and a faulty power supply unit.

Solution: Over three visits, the technician replaced the printhead, printhead cable kit, power supply, ribbon-out sensor, pivot bar, and toggle, then calibrated the unit. Media sensor replacement was evaluated but deferred; a replacement sensor was left on-site for future use.

Problem: Zebra 140Xi3 thermal printer reported multiple issues, including voids in printed output. Cleaning the printhead did not resolve the defect.

Solution: Replaced the printhead (203 dpi, part G48000M) on the Zebra 140Xi3 and tested the unit to confirm clean, void-free print output.

Problem: Zebra 4M+ thermal printer scheduled for routine preventive maintenance as part of a multi-unit service visit.

Solution: Performed preventive maintenance on the Zebra 4M+ thermal printer. Unit was cleaned and tested with no issues found.

Problem: HP LaserJet M608dn in Glendale repeatedly pulling two to three staggered pages at a time from Tray 2, which was loaded with three different colors of paper.

Solution: Technician found paper in Tray 2 had been loaded with forward-edge bends, likely the primary cause of multi-feed. Replaced the Tray 2 separation roller assembly and reloaded paper flat and aligned. Printer operated without incident on follow-up confirmation.

Problem: A Zebra 105SL (model 10500-3001-2000) thermal printer in Moorpark, CA was due for a PM45 preventive maintenance service.

Solution: Technician performed a full PM45 preventive maintenance procedure on the Zebra 105SL (model 10500-3001-2000), restoring the unit to proper operating condition.

Problem: Lexmark MS810 laser printer in Calabasas reported paper feed failure — rollers not pulling media from the tray.

Solution: Tray settings adjusted to Universal 8 to accommodate odd-size card stock. Replaced pick roller (40X7593) and separation roller (40X7713) from stock. Paper feed tested and confirmed operational.

Problem: Zebra 170Xi3 thermal printer reported urgent ribbon-tearing failures; multiple new ribbons either tore mid-print or produced excessively light output across all prints.

Solution: Technician confirmed the issue was not the test ribbon. Four customer-supplied ribbons failed — one tearing consistently, three printing too light. A second printhead showed no improvement. Darkness settings were unresponsive until a power cycle restored control. The OHMS (resistance) setting was th

Problem: HP LaserJet 600 M601 would not power on. On-site inspection revealed error code 46.23.50, indicating possible firmware corruption or PC software configuration conflict.

Solution: Technician updated firmware, which the printer accepted, but upon reconnecting the USB cable and rebooting, the heartbeat LED remained solid red — indicating a formatter failure. Reseating the formatter board restored operation. Customer was quoted for a replacement formatter board (CE988-67912) and

Problem: HP LaserJet 600 M601 laser printer reported jamming at a Calabasas business.

Solution: Call cancelled by the customer prior to technician dispatch. No site visit or service was performed.

Problem: Lexmark X658de multifunction laser printer producing a loud thumping noise during operation.

Solution: Inspection revealed the fuser bushings were fully worn. Vacuumed all internal debris, installed a replacement fuser assembly, and verified normal operation through test prints.

Problem: Brother MFC-9340CDW displaying 'Replace Drum Units' error despite all drum units having been recently replaced by the customer.

Solution: Reset all four drum unit counters to clear the persistent error. Cleaned the printer and confirmed full functionality. Printed a supplies life page showing drums and toners at 100%; belt unit at 29%, fuser at 37%, and PF kit at 39% were noted for future attention.

Problem: HP Color LaserJet M553 reported paper jams originating from the tray; the side feeder subsequently stopped functioning.

Solution: Over two visits, the technician installed a Tray 1 roller kit (B5L24-67905) and replaced the fuser (B5L35-67901) and Tray 2 roller kit (B5L24-67904). Tray 2 continued to jam with jam code 13.B.D2, and lead-edge registration on the second page was significantly misaligned — an issue traced back to Ja

Problem: Customer in Camarillo, CA required delivery of two newly purchased Zebra thermal printers: a ZT410 and a ZT510, both 203 dpi, for self-installation.

Solution: Delivered a Zebra ZT410 203 dpi (ZT41042-T010000Z) and a Zebra ZT510 203 dpi (ZT51042-T010000Z), both at zero page count, to the customer site. Customer performed installation independently.

Problem: HP DesignJet T2300ps eMFP would not power up. On power-on, the formatter I-LED flashed once, the control panel power button flashed once, and the formatter fan ran continuously — no further activity.

Solution: Technician confirmed the formatter was suspect by removing it and observing the plotter initialize until halting on an 08:11 error (hard drive not found). Replaced hard drive (CN727-67045), then formatter, with no change. After consulting HP support, replaced the Engine PCA with Power Supply assembl

Problem: HP Color LaserJet MFP M477fnw brought in for scheduled preventative maintenance.

Solution: Performed full preventative maintenance on the HP CLJ MFP M477fnw at 49,758 page count. Thoroughly cleaned internal components and tested all functions to confirm proper operation.

Problem: Zebra 105SL thermal printer in Ventura reported a media feed failure — media would not advance through the print path.

Solution: Technician replaced both drive belts and the printhead using customer-supplied stock parts. Unit was tested and confirmed feeding correctly following the PM18 service.

Problem: Lexmark T642 laser printer reported jamming and abnormal noise during operation.

Solution: Inspection traced both the jamming and noise to a defective toner cartridge. The faulty cartridge was replaced and a replacement unit was dispatched to the customer.

Problem: HP LaserJet MFP M632h in a Van Nuys mail room presented with image defects along the right side of printed pages.

Solution: Inspection traced the defect to a torn mylar sleeve on the fuser heat roller. Replaced the fuser assembly (RM2-1256), tray 2 pickup roller (RM2-1275), and tray 2 separation roller (RM2-6772). Cleaned and tested the printer to confirm normal output.

Problem: HP LaserJet 8150n reported with broken components on the exit assembly, missing rollers on the face-down delivery unit, intermittent fuser jams, and worn feed rollers across all paper trays.

Solution: Installed C3914A maintenance kit covering the fuser, tray 1, and tray 2 feed rollers; replaced RG5-1874-000CN face-down delivery assembly and RB1-9526-000CN tray 1 feed roller. Verified no remaining issues after installation.

Problem: HP LaserJet 600 M602 reported a fuser error message, halting print operations.

Solution: Replaced the fuser, transfer roller, three pickup rollers, and six feed rollers. Cleaned and tested the printer to confirm full functionality.

Problem: HP LaserJet MFP M527c reported persistent ADF jams affecting document scanning and copying workflows at a Camarillo business.

Solution: Cleaned ADF rollers and separation pad; wear was too advanced for cleaning alone. Replaced full ADF kit (W5U23A, W5U23-67901, B5L52A, B5L52-67903), cleaned the machine, and tested to confirm jam-free operation.

Problem: Zebra 105SL thermal printer in Camarillo was printing only the top portion of each label — approximately 8 of 11 inches — with the lower section consistently blank.

Solution: Replaced the platen roller (G32011M) and printhead (32433M) with the correct 105SL-specific components after initial parts sourced were spec'd for the 105SL Plus. Cleaned and tested the unit to confirm full-label print output.

Problem: Zebra ZT410 thermal printer in Burbank reported labels randomly sticking to the platen roller during print jobs.

Solution: Inspection revealed two razor blades inside the unit and a full-width cut through the platen roller down to the core. Print head showed no missing print; drive gears and belt were in good condition. Quoted replacement platen roller (part #P1058930-080). Call closed after no customer approval to proc

Problem: Zebra 110xi4 thermal printer in Reseda reported as needing a platen roller replacement.

Solution: Technician installed a new platen roller (part #G41011M) on the Zebra 110xi4, then cleaned the unit and verified print quality through functional testing.

Problem: Zebra GX430t thermal printer in Van Nuys due for scheduled preventive maintenance (visit 5 of 9 in service cycle).

Solution: Performed scheduled PM on Zebra GX430t at 1,340,952 inches of use. Cleaned internal components and reconfigured printer settings to manufacturer specifications.

Problem: HP LaserJet M605 reported a 50.00.11 fuser error, halting print operations.

Solution: Loaned a replacement fuser (part E6B67-67901) to restore operation while warranty processing was arranged. Warranty fuser was installed, printer tested, and original core shipped back via FedEx.

Problem: HP Color LaserJet CP4525 reported leaving roller marks down the page on envelopes.

Solution: Inspection revealed shadows appearing only on sealed envelopes, caused by the sticker seal fusing during the print cycle. Open-flap envelopes printed without marks. Technician cleaned the machine and confirmed the issue was envelope-specific, not a roller defect.

Problem: Lexmark MS810 laser printer in Moorpark reported failing to pull paper from Tray 1, with persistent jam errors at approximately 50,000 page count.

Solution: Cleared paper from the multi-purpose tray, confirmed no obstructions in the paper path, and identified skid marks on stock in Tray 1 indicating roller slippage. Cleaned feed and separation rollers on both trays; printer resumed proper paper pickup and feeding.

Problem: HP Color LaserJet 5500 leaving excess toner on pages when printing batches of 100 postcards; issue did not occur on standard media.

Solution: Technician could not duplicate the issue on-site. Adjusted specialty media settings and recommended a mid-batch calibration. Replaced the MP tray roller (RG9-1529-000CN) and MP separation pad (RF5-3865-000CN); tested unit after installation.

Problem: A Zebra ZT510 industrial thermal printer at a Chatsworth facility was due for scheduled preventive maintenance.

Solution: Technician performed PM level 4 cleaning on the ZT510. Unit was tested post-service and cleared for return to operation.

Problem: Zebra 105SL Plus thermal printer required a new printhead and ribbon strip plate as part of a scheduled PM cycle.

Solution: Replaced the 300 DPI printhead (P1053360-019) and ribbon strip plate (P1006095) on the Zebra 105SL Plus. Both parts were installed and the unit was tested and returned to service.

Problem: Zebra ZT230 thermal printer in Glendale reported completely unable to print.

Solution: Diagnosed a stalled print queue containing 94 backed-up jobs. Coordinated with the customer's IT department to clear the queue; printer resumed normal operation after purge.

Problem: Zebra 105SL thermal printer reported creasing problems during print output, requiring scheduled PM12 preventive maintenance.

Solution: Replaced printhead, platen roller, and ribbon roller using customer-supplied stock components. Creasing issue resolved; unit tested and returned to service.

Problem: HP LaserJet Managed E60155dn (page count 285,256) reported leaving streaks on printed pages. Inspection revealed the fuser heat roller had detached, producing large, irregular streak patterns and ejecting fragments of thin plastic.

Solution: Installed HP LaserJet 110V Maintenance Kit (L0H24A). Replaced fuser assembly, transfer roller, and Tray 2 feed/pickup rollers. Verified no additional issues following repair.

Problem: Zebra GX430t thermal printer in Camarillo due for scheduled preventive maintenance (session 3 of 6).

Solution: Performed scheduled PM on Zebra GX430t at 2,316,094 inches of use. Cleaned internal components and verified printer configuration settings.

Problem: HP Color LaserJet CM4730 MFP presented with ten concurrent faults: chronic jams at the ADF, duplexer, and fuser; toner contamination on output; faded or miscolored scans; and recurring memory errors on large PDF jobs.

Solution: Replaced a toner-contaminated transfer belt with the customer-supplied spare. Diagnosed ADF multi-feed and fuser jams; ordered ADF Maintenance Kit Q5997A, Duplexing Unit RM1-2112-000CN, and Fuser RM1-3131-060CN for a follow-up installation visit. Advised switching from PS to PCL drivers to address l

Problem: HP Color LaserJet M553 in a shared commons area was due for scheduled preventive maintenance as part of a multi-unit service visit.

Solution: Performed preventive maintenance on the HP Color LaserJet M553 at a page count of 7,640. Cleaned internal components and tested print output to verify proper operation.

Problem: Customer in Van Nuys required a new Zebra ZT411 thermal printer.

Solution: New Zebra ZT411 ordered and shipped ground directly to the customer. Unit was on backorder at time of order with availability expected mid-November.

Problem: Zebra 105SL (105SL 10500-3001-2000) thermal printer reported faulty peel-off sensor, preventing reliable label detection during print operations.

Solution: Replaced the peel-off take-label sensors (part G46609-4M) on the Zebra 105SL to restore proper label dispense and detection functionality.

Problem: Zebra 220Xi4 industrial thermal printer reported multiple issues, including print quality failure and a connectivity concern flagged in the unit's notes.

Solution: Replaced the printhead using customer-supplied stock, performed a full PM cleaning and mechanical adjustment, and recalibrated the unit. Identified and corrected a bent/misaligned connector pin. The USB connectivity concern was confirmed irrelevant — the unit operates exclusively over network and pa

Problem: HP LaserJet MFP M630z reported paper pick failures. The pick roller was worn, and the ADF separation pad was found torn, preventing reliable document feeding.

Solution: Installed L2718A ADF kit, replacing the worn pick roller and torn separation pad. Reset the feed count and tested the ADF — paper pick and document feeding restored to normal operation.

Problem: HP LaserJet Pro 400 M401n due for scheduled quarterly preventive maintenance.

Solution: Performed quarterly PM on HP LaserJet Pro 400 M401n. Inspected all major assemblies, cleaned components as needed, and verified proper operation through functional testing.

Problem: Zebra GX430t thermal printer due for scheduled preventive maintenance (visit 4 of 6).

Solution: Performed scheduled PM on Zebra GX430t at 629,582 inches of use. Cleaned internal components and verified printer configuration.

Problem: A Zebra ZM400 thermal printer in Burbank was producing unclear, degraded print output.

Solution: Technician cleaned the printhead and adjusted darkness settings on four Zebra ZM400 units. Each printer was tested after service to confirm restored print quality.

Problem: HP Color LaserJet MFP M880 reported a 50.3F fuser error code. Inspection revealed damaged pins on the fuser female connector, consistent with an improper fuser installation.

Solution: Replaced fuser drive assembly (RM1-9606) and trays 2–5 roller kit (RY7-5219K), clearing the 50.3F error. Installed ADF kit (C1P70-67901). Diagnosed residual paper corner creasing on 8.5×11 stock in trays 3–5; resolved by testing with a replacement fuser. Machine cleaned and returned to service.