HP Printer Repair Silver Spring, MD

Problem: HP LaserJet M452nw in Bethesda reported persistent paper feed failures across trays 2 and 3, along with intermittent 59.0240 errors.

Solution: Inspection confirmed worn pickup rollers (RM2-5576), feed rollers (RM2-5577), and separation rollers (RM2-5881) in trays 2 and 3, plus a failing ITU (transfer belt, RM2-6454) triggering the 59.0240 fault. All four roller sets and the transfer belt were replaced, and the printer was cleaned and teste

Problem: HP DesignJet T795 44" plotter in Greenbelt, MD reporting error 08:04 on startup; unit failed immediately upon pressing the menu button.

Solution: Ran carriage and Main PCA diagnostics; confirmed carriage failure code 02.1:10 with carriage stalled and immovable. Manually repositioned carriage — belt and clips undamaged. Oiled carriage rod, cleaned encoder strip. Initial firmware update failed; performed EEROM reset, after which firmware update

Problem: HP LaserJet 4250 in Gaithersburg, MD presented with recurring lines on output and required a maintenance kit and solenoid replacement.

Solution: Installed maintenance kit and solenoid on the HP LaserJet 4250. Lines persisted post-installation; inspection revealed a third-party toner cartridge with toner contamination on the exterior. Swapping in a clean OEM-sourced cartridge eliminated the lines on internal test prints. Maintenance kit repla

Problem: HP LaserJet 8150n reported recurring paper jams.

Solution: Inspection of the paper transport path revealed rollers coated with a glue-like residue. Affected transport rollers were thoroughly cleaned and the printer was test-run to confirm jam-free operation.

Problem: HP DesignJet T920 plotter was unable to print. IT staff had inspected the unit and suspected a hardware fault.

Solution: Technician cleaned the unit, oiled the carriage rail, and confirmed printing from Word and the plotter driver. Root cause was an incorrect AutoCAD media destination setting. The customer reset it to default, restoring full print functionality.

Problem: HP LaserJet MFP M521dn Tray 2 failing to pick up paper, accompanied by a clicking noise during the pickup cycle.

Solution: Replaced the Tray 2 paper pickup assembly and fuser as part of a maintenance kit service. Post-replacement testing revealed a grinding noise and continued malfunction; the call was escalated for further diagnosis.

Problem: HP LaserJet 4050 reported printing slowly at a Herndon, VA office, where it served as a spare unit.

Solution: Technician determined the 18-year-old LJ 4050 was operating at its rated speed. No repair was performed; the customer was advised to source a used HP LaserJet M602 as a replacement spare due to the unit's age and limited parts availability.

Problem: HP LaserJet M631 producing dark vertical lines through scans and copies.

Solution: Technician cleaned the scanner glass on the HP LaserJet M631, eliminating the dark line artifacts. Device tested and confirmed performing within normal parameters.

Problem: HP LaserJet P2055 reported with a torn label wrapped around the infeed roller, causing a paper feed obstruction.

Solution: Technician removed the torn label from the infeed roller assembly, cleared the obstruction, cleaned the machine, and tested to confirm normal paper feed operation.