HDB ISD880R Stepper Motor Driver 134247042049 then it stops and flashes

then it stops and flashes the error again

RV-2F-1D-SA11 SKU 19-53200 Ref 23-96796

Manufacturer Tektronix Model Number P6138 SKU 19-31672 Ref 23-82902

Includes Weighing Amplifier as pictured

Manufacturer HP Model Number 08594-60030 SKU 19-58895 Ref 23-82170

HDB ISD880R Stepper Motor Driver 134247042049 then it stops and flashesCondition Used Description Recently removed from working service and guaranteed functional. Cosmetically has wear from previous use including scuffs and scratches. Includes Stepper Motor Driver as pictured. No additional items or accessories are included. Photos are of the actual unit for sale. Inventory is on hand and ready to ship. Please feel free to message us with any questions you may have. Thank you for checking out our listing. Specifics