High-Voltage Arcing - Digital Equipment DEClaser 3200 Service Manual

4.5.3 High-Voltage Arcing

Badly connected green ground wires, spring metal contacts, and frame metal
assembly straps can create electrical interference that effects and upsets the
operation of the DC or video control boards. The control panel may flash and
blank out, or the 0305 error message is erroneously displayed.
• Use the following procedure to test for high-voltage arcing:
a. Remove the top door cover, as shown in Section 9.2.
b. Install the interlock tool (See Table D–2).
c. Enter the 1701 test code 0400.07, as shown in Section 3.1.1. This runs
the main motor and all HVPSA outputs.
d. Look and listen for arcing in all the high-voltage cables and connectors.
It might be easier to see if you turn down the lights.
• Check the top door connectors that connect the HVPSA to the print
cartridge. Fix or replace any damaged parts.
• Check the front spring connector on the erase board for damage, bending,
or pitting. This contact carries the primary charge current.
• Remove the transfer/separation charger. Print several copies of the grid
test pattern, which will print blank (SeeSection 3.3 ). If the erratic
behavior ceases, replace the transfer/separation charger.
4.5 Erratic Operation
Start FIP and Nonerror Code FIPs 4–9