Thermal Printer Repair Service History — Arlington, TX — Page 2

Problem: Zebra ZT410 thermal printer due for sixth scheduled preventive maintenance service at a DeSoto, TX facility.

Solution: Completed PM6 service on the Zebra ZT410. Replaced the 203 DPI printhead (P1058930-009), platen roller (P1058930-080), toggle, ribbon sensor, and media sensor. All components were tested post-installation.

Problem: Zebra ZT410 thermal printer presented with a slipping drive system — gears failing on the main motor, requiring inspection of the full drive assembly and platen roller.

Solution: Technician vacuumed and cleaned the internal cavity, then replaced the drive gears (P1058930-039), drive motor (P1058930-040), and platen roller (P1058930-080) with Zebra OEM components. The belt showed a torn section with missing teeth but remained functional; drive system was restored and tested c

Problem: Zebra ZT510 industrial thermal printer was due for a scheduled preventive maintenance visit (session 4 of 6 in an ongoing PM cycle).

Solution: Technician performed scheduled preventive maintenance on the Zebra ZT510, including full cleaning of internal components and functional testing to confirm proper operation.

Problem: Zebra ZT230 thermal printer producing a persistent vertical black line on the far left edge of printed barcodes, outside the intended label image area.

Solution: Technician investigated a vertical black line appearing on the far-left margin of barcode labels. After on-site evaluation, the defect was traced to the label printing software rather than a hardware component. No parts were replaced; the case was monitored and closed after the issue did not recur.

Problem: Zebra QLN420 mobile thermal printer reported inadequate media grip and feed issues traced to a worn platen roller requiring replacement.

Solution: Technician replaced the platen roller assembly using kit P1050667-008 (QLn420 Platen/Gear with Holder, Linered) and confirmed proper grip and print registration through post-repair testing.

Problem: Zebra 140xi4 thermal printer required ribbon strip plate replacement — part of a multi-unit service continuation addressing recurring label creasing every 20th label.

Solution: Replaced ribbon strip plate and static brush on the Zebra 140xi4, mirroring the repair performed on a companion unit. Multiple mechanical tweaks and adjustments were attempted to fully eliminate the 20-label creasing interval; issue was partially mitigated and escalated for further follow-up.

Problem: Zebra ZT510 industrial thermal printer due for quarterly preventive maintenance as part of a scheduled five-unit PM cycle at a Grapevine facility.

Solution: Performed quarterly PM on the ZT510. Inspection revealed a curved platen roller requiring replacement. Installed OEM platen roller (P1083347-012), tested print quality, and confirmed the unit was ready for return to service.

Problem: Zebra 105SL Plus thermal printer producing barcodes with visible horizontal lines, indicating a failing or contaminated printhead.

Solution: Replaced the printhead using a unit from the customer's own stock, cleaned the print path, and tested output to confirm clean, line-free barcode printing.

Problem: Zebra GX430t thermal printer due for scheduled preventive maintenance (service interval 5 of 7).

Solution: Performed preventive maintenance on Zebra GX430t at 551,285 inches of print history. Cleaned internal components and verified printer configuration.

Problem: Zebra ZT410 reported with label guide misalignment and significant vertical lines appearing across print output.

Solution: Replaced the printhead, which showed heavy vertical line defects. Repositioned the media sensor from the far-left position to center. Label guides inspected and adjusted to the installed media roll; no structural guide defect found. Unit tested and confirmed operational.

Problem: Zebra 105SL thermal printer reported sensor and printhead issues affecting print quality and reliability.

Solution: Technician cleaned the printhead and adjusted printhead pressure. Printer was tested and confirmed operating within normal parameters. No parts required.

Problem: Zebra ZM400 thermal printer in Carrollton, TX was due for scheduled preventive maintenance and submitted for a full PM service.

Solution: Performed PM service on the ZM400: cleared dust buildup, cleaned the platen roller, inspected the printhead, and tested the unit to confirm proper operation.

Problem: Zebra 105SL Plus reported two label-feeding issues affecting consistent print output.

Solution: Technician adjusted the tear bar position closer to the platen roller and repositioned the media sensor to allow labels to pass through correctly.

Problem: Customer requested a spare parts quote for a Zebra ZM600 thermal printer to replenish two printheads that had been used from their on-site stock.

Solution: Quoted two 79804M 300 DPI 6" printheads and two 79867M 300 DPI belts for the Zebra ZM600. Parts were to ship directly to the customer site if ordered.

Problem: Zebra 105SL thermal printer presented for scheduled PM31 preventive maintenance service in Duncanville, TX.

Solution: Replaced drive belt and platen roller. Adjusted sensor settings and tested unit to confirm proper operation.

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

Solution: Inspection found no mechanical faults. Technician loosened the toggle grip and increased the darkness setting. Test-printed labels confirmed all barcodes scanned correctly.

Problem: Zebra 105SL thermal printer throwing intermittent ribbon-out errors despite ribbon being properly loaded.

Solution: Technician diagnosed excessive printhead pressure creating drag on the ribbon path. Pressure and darkness settings were adjusted to manufacturer spec, eliminating the false ribbon-out fault.

Problem: Zebra 105SL Plus thermal printer reported a head close sensor fault, preventing normal print operation.

Solution: Diagnosed a misaligned flag on the head close spindle. Added a washer to the spindle to reposition the flag within the sensor's detection range. Tested and confirmed proper sensor engagement and print function.

Problem: Zebra ZT510 thermal printer in Hurst, TX was due for preventive maintenance (PM22 service level).

Solution: Technician performed a PM22 preventive maintenance cleaning on the Zebra ZT510 and tested the unit to confirm proper operation.

Problem: Zebra QLN420 mobile printer reported with unresponsive up/down navigation buttons and media slippage during printing.

Solution: Technician disassembled the QLN420, identified a worn platen roller and faulty removable platen gear as the cause of media slippage. Replaced the platen roller assembly (P1050667-008) and confirmed proper media feed on test. Unresponsive up/down buttons were also diagnosed; lid locking mechanism and

Problem: Zebra ZT410 industrial thermal printer due for scheduled preventive maintenance, second of a two-visit PM cycle.

Solution: Cleared accumulated paper dust from the unit. Confirmed size-sensing calibration functioned correctly for both 2×4 and 4×8 label formats the customer planned to run. Inspected internal gears and belt; no wear detected.

Problem: Zebra 110Xi4 thermal printer reported a calibration failure — the unit was configured for continuous media but loaded with non-continuous labels, preventing proper calibration.

Solution: Technician changed the media setting from continuous to non-continuous, cleared stuck labels from the print path, then cleaned and tested the printer to confirm calibration and proper label detection.

Problem: Zebra 110xi3 thermal printer producing blank labels — ribbon guide component above the printhead missing or damaged, preventing proper ribbon tracking.

Solution: Technician confirmed the ribbon guide assembly above the printhead was the root cause of blank output. Required parts were unavailable through standard vendor channels; sourcing alternatives pursued before repair can proceed. Call closed pending part availability.

Problem: Zebra 105SL thermal printer reported in need of service; take-up motor identified as failed.

Solution: Technician replaced the take-up motor on the Zebra 105SL, then cleaned the unit and verified full operation through functional testing.

Problem: Zebra S4M thermal printer not printing.

Solution: Technician reconfigured media settings to thermal transfer, set sensor to transmissive mode, cleaned the printhead, and verified print output.

Problem: Zebra GX430t thermal printer due for scheduled preventive maintenance (visit 7 of 14).

Solution: Performed PM on Zebra GX430t at 280,062 inches of use. Cleaned internal components, adjusted configuration settings, and repaired the cutter mechanism.

Problem: Zebra 105SL Plus thermal printer in Mansfield, TX presented with labels jammed in the paper path after media was loaded inverted.

Solution: Disassembled the printer, cleared all jammed label stock using a window repair knife and adhesive remover, reassembled the unit, verified print quality, and reconnected to the network.

Problem: Three Zebra 220Xi4 industrial printers exhibited barcode streaking, multiple white lines in print output, and a missing media guide — traced to SAP darkness settings mismatched across six label types in use.

Solution: Darkness settings adjusted on all three units per operational requirements. Replaced media guide plate (P1006109) and 203 DPI printhead (P1004238) on affected unit. All printers tested and confirmed printing cleanly across all six label types.

Problem: Zebra 105SL Plus thermal printer required installation of previously ordered replacement components: main drive belt, platen roller, and printhead.

Solution: Technician installed the main drive belt, platen roller, and printhead on the Zebra 105SL Plus. Unit was cleaned and tested following parts installation.

Problem: Zebra ZT420 thermal printer producing faint, unclear print output.

Solution: Replaced printhead (203 dpi, P1058930-012) and feet (P1058930-078), then calibrated, adjusted, cleaned, and tested the unit to restore full print quality.

Problem: Zebra 105SL thermal printer was due for preventive maintenance; page count was unavailable at the time of the service visit.

Solution: Technician performed a PM18 preventive maintenance service on the Zebra 105SL, completing a full cleaning cycle and functional testing to confirm proper operation.

Problem: Zebra 110xiIII thermal printer presented with multiple operational issues, including label media wrapped around the platen and recoil rollers.

Solution: Technician cleared label buildup from the platen and recoil rollers and performed a full cleaning of the Zebra 110xiIII (configuration 112-741-00000), restoring normal print operation.

Problem: Zebra ZT410 experiencing recurring alignment issues across multiple label types, driven by over 24 different label configurations requiring varied speed, print mode, darkness, and physical sensor positions.

Solution: Technician reviewed configuration demands on the ZT410 stemming from 24+ label types run through an AS400 system. Walked the customer through adjustable parameters — speed, darkness, print mode, and sensor positioning — and identified that full resolution requires a Zebra representative to streamlin

Problem: Zebra GX430t thermal printer due for scheduled preventive maintenance (second of two visits).

Solution: Performed full PM on Zebra GX430t at 462,100 inches of use. Cleaned internal components and verified printer configuration.

Problem: Customer in Euless, TX required procurement of a new Zebra ZT510 203dpi thermal printer (model ZT51042-T210000Z).

Solution: New Zebra ZT510 203dpi unit sourced and ordered; parts shipped ground directly to the customer's location following a 4–6 week backorder period. Unit confirmed delivered.

Problem: Zebra Z4M Plus thermal printer submitted for preventive maintenance as part of an eight-unit service visit at a DeSoto, TX facility.

Solution: Technician performed PM inspection and identified a worn print head (part 79057M) and platen roller (part 77023M) requiring replacement on the 300dpi/10ips 4" unit. Customer deferred repair; quote issued for both components.

Problem: Zebra ZT610 203 dpi displaying a persistent 'Ribbon Out' error despite the ribbon path appearing correctly loaded and threaded.

Solution: Configured the ZT610 to direct thermal mode as a temporary workaround to maintain production uptime. Ribbon sensor (P1083320-051) and main board (P1083320-124) identified as faulty components and ordered. Full replacement scheduled for a planned production line deactivation window to accommodate the

Problem: Zebra ZT410 thermal printer in Bedford, TX required an urgent printhead replacement, with the customer requesting next-day parts sourcing and immediate installation.

Solution: Replaced the failed printhead on the Zebra ZT410. Following installation, darkness settings were adjusted to restore barcode readability to operational standards.

Problem: Zebra ZM400 thermal printer would not print labels. The unit had been dropped, resulting in two broken internal components and warped covers.

Solution: Technician assessed physical damage from a drop impact. Serviceable parts were harvested from this unit to restore two other ZM400 printers. The damaged unit required extensive parts — including the control panel, media hanger, printhead, and logic board — and could not be fully tested. The customer

Problem: Zebra ZT510 203 DPI thermal printer due for its second of four scheduled quarterly preventive maintenance visits at a DeSoto, TX facility.

Solution: Technician inspected the printhead and platen roller, confirming both in good condition, then verified print quality output. Drive belts and gears were also inspected and found within acceptable condition. Quarterly PM completed as scheduled.

Problem: Zebra ZE500 thermal printer reported with a suspected failing printhead on a dual-head unit.

Solution: Technician cleaned the printhead and assessed condition. New printhead was not installed due to an inoperative folding machine preventing test verification. Replacement part was left on-site for installation once the folding machine is restored to operation.

Problem: Zebra ZM400 thermal printer in DeSoto, TX presented with accumulated dirt and dust contamination requiring preventive maintenance service.

Solution: Performed PM service on Zebra ZM400. Used compressed air with nozzle attachment to purge internal dirt and dust buildup throughout the unit. Tested print output following cleaning to confirm proper operation.

Problem: Three Zebra 105SL thermal label printers were due for scheduled quarterly preventive maintenance at a Bedford, TX facility.

Solution: Technician cleaned printheads and platen rollers, cleared all sensors, and inspected drive belts and gears on each unit. All components were found within spec at time of service.

Problem: Zebra 140xi4 in Kennedale, TX reported label-skipping during print jobs; root cause traced to two users sharing one printer queue, causing conflicting print jobs to interrupt each other.

Solution: Onsite visits confirmed the skipping was a print-queue conflict, not a hardware fault. A subsequent visit found a ribbon-out error requiring the main logic board and ribbon sensor; direct thermal mode was configured as a temporary workaround. Final visit: unit was swapped to a 140Xi4, settings updat

Problem: Zebra ZD621 thermal printer presented with a missing button on the cover assembly, rendering the cover unserviceable and requiring full replacement.

Solution: Technician removed the ZD621 from the customer site for bench servicing. Replaced the cover assembly (part P1112640-225) and returned the printer to the customer upon completion.

Problem: Six Zebra thermal printers at a DeSoto, TX facility were due for scheduled quarterly preventive maintenance.

Solution: Performed quarterly PM on a Zebra 105SL 203 DPI unit (part of a 3–6 printer fleet): cleaned internal components, adjusted mechanical settings, and inspected overall condition. Printer passed all checks.

Problem: Zebra GX430t thermal label printer due for scheduled preventive maintenance.

Solution: Performed PM on Zebra GX430t: repaired cutter assembly, cleaned internal printer components, reconfigured device settings, and verified operation through functional testing.

Problem: Zebra 170XIIIl thermal printer reported image quality issues.

Solution: Technician found the print head heavily soiled. Performed a thorough cleaning of the print head and surrounding components, then tested the unit to confirm clean, consistent output.

Problem: Zebra 105SL (model 10500-2001-0070) exhibited repeated lockups, loss of calibration, and network card failures, rendering it unfit for continued service.

Solution: Unit was designated as a parts donor. The main board and additional components were stripped from this printer to support repairs on nine other Zebra 105SL units in the same fleet.

Problem: Zebra 105SL (model 10500-3001-2000) reported failing media and ribbon calibration, indicating a faulty main board.

Solution: Diagnosed main board failure as the root cause of calibration faults. Replaced the main board with a 34901-020M to restore full print operation.