Real-time updates and completed service calls from across the metro area.
Our technicians are in the field every day fixing equipment for local engineering firms, architects, and print shops. Below is a log of recent plotter service calls completed throughout Roswell, Alpharetta, Buford, Acworth, and surrounding areas—showing the exact plotter models, reported issues, and on-site fixes delivered by our team.
Sep 17, 2026·Alpharetta, GA 30004·HP T2300
Problem:
HP DesignJet T2300 (44") repeatedly restarted and the OK button was unresponsive, preventing normal operation.
Solution:
Technician identified error 86:01 (Scan Axis Error). Located and removed a large torn sheet blocking the carriage assembly, restoring axis movement. Cleaned the unit, tested operation, and performed a routine preventative maintenance service.
May 8, 2026·Atlanta, GA 30328·HP T610
Problem:
HP DesignJet T610 44" reported needing service, with a 79 error present and the unit unable to communicate over the network.
Solution:
Technician oiled the carriage rod and cleared the print queue. Diagnostics identified the ethernet card as the source of the 79 error — the plotter functioned without it. A replacement HP Jetdirect 635N (J7961G) was quoted; the customer declined and the call was closed.
Apr 10, 2026·Norcross, GA 30071·HP Designjet 800
Problem:
HP DesignJet 800 PS 44" (C7780C) presented with a 79:04 Generic Firmware Error on arrival. Carriage movement was limited to approximately 2 inches and the service station traveled only half an inch before halting.
Solution:
Technician attempted a firmware update via USB, but the unit failed to process and complete the boot sequence. Carriage rod was oiled, encoder strip cleaned, and all removable components — printheads, formatter, JetDirect card, ink cartridges, and paper — were isolated one by one; the 79:04 error pe
Mar 16, 2026·Alpharetta, GA 30004·HP T830
Problem:
Customer purchased a new HP DesignJet T830 36" MFP plotter requiring delivery coordination and on-site installation.
Solution:
Unit arrived in a damaged carton; vendor shipped a replacement and retrieved the damaged printer. Technician completed on-site installation of the replacement HP DesignJet T830 36" MFP and removed the formatter board from the unit being replaced for HP rebate processing.
Mar 10, 2026·Norcross, GA 30092·HP T610
Problem:
HP DesignJet T610 throwing a 79:04 error exclusively when the JetDirect card was installed, pointing to a network interface fault rather than a firmware or ink-system issue.
Solution:
Diagnosed faulty onboard formatter NIC; replaced the JetDirect card with an ordered replacement and installed three new ink cartridges. Configured the printer via auto-assigned IP and verified operation by connecting to a workstation and printing a test page.
Feb 25, 2026·Norcross, GA 30092·HP T795
Problem:
HP DesignJet T795 plotter in Norcross, GA presenting error 08:04 at random points during boot — 35%, 71%, 94%, and at ready state — with the display logging a shutdown event that never executed.
Solution:
Diagnostics revealed the broken plastic center piece of the control panel power button and an 08:04 error pattern suggesting a phantom button-press signal. Per HP support guidance, the full control panel cable kit was installed, prioritizing the two USB cables spanning from the main board and power
Dec 26, 2025·Duluth, GA 30096·HP T520
Problem:
HP DesignJet T520 (CQ890A) 24" reported a cutter jam error, cutting approximately one-third through the media before stopping and prompting a clear-jam alert.
Solution:
Technician diagnosed a damaged carriage drive belt (part no. CQ890-67059). Replaced the belt and cleaned the carriage rail assembly. Test pages confirmed the plotter returned to full working condition.
Oct 24, 2025·Duluth, GA 30096·HP T3500
Problem:
HP DesignJet T3500 wide-format plotter repeatedly displaying a 79:04 error code, halting all print operations.
Solution:
Technician updated firmware, removed all supplies, and ran full diagnostics — scan axis, file system check, carriage electronics, electronics module (engine board, power supply, formatter), paper drive encoder calibration, and BIOS update — all passed. An EPROM reset restored factory defaults and cl
Showing 8 of 8 service calls in Roswell, GA.