Product Catagory  Printronix (PTX)  Record ID  26
Model number  4280
Model description  PRINTER
Part number  4280
Part Description  PRINTER
Topic  Missing one or more DC voltages and power supply has been eliminated.

Instructions  Check W2 and W3 cables between power supply and Mechanism driver. Power Supply pcba supplies +48, 9.5, and 5VDC to the mechanism driver pcba