Xerox Phaser 6200B, Service Manual

Page: 107 / 386

Troubleshooting 89
3 Disconnect the connectors J163, J164
and J165 from the LVPS, turn the AC
power switch on and verify the DC
voltages between the following pins on
the Low Voltage Power Supply board.
P163-1 <=> P163-2 = +24VDC?
P164-1 <=> P164-2 = +3.3VDC?
P165-1 <=> P165-2 = +5VDC?
P165-3 <=> P165-4 = +3.3VDC?
Caution:
Be careful not to touch any other pins
during these measurements or you may
blow the fuse (F001) on the LVPS. Go to step [4]. Replace the
Low-Voltage
Power Supply
Board, RRP 12.2.
4 Turn the AC power switch OFF.
Connect J164 to the LVPS then turn the
AC power switch ON.
P/J164-1 <=>P/J164-2 = +3.3 VDC? Go to step [6]. Go to step [5].
5 Check the following parts for fault or
damage:
LVRPG Harness Assembly for damage or
if it is shorted to the frame.
Engine Control Board. Replace if
damaged or
defective. Go to step [6].
6 Turn the AC power switch OFF.
Connect J165 to the LVPS then turn the
AC power switch ON.
Verify:
P/J165-1 <=> P/J165-2 = +5 VDC?
P/J165-3 <=> P/J165-4 = +3.3 VDC? Go to step [8]. Go to step [7].
7 Check the following parts for fault or
damage:
LVNC Harness Assembly
Motor Driver Board Replace if
damaged or
defective. Go to step [8].
8 Turn the AC power Switch OFF
Connect J163 to the LVPS then turn the
AC power switch ON.
P/J163-1 <->P/J163-2 = +24 VDC? Complete Go to step [9].
9 Check the following for fault or damage:
24V Harness Assembly
Motor Driver Board Replace if
damaged or
defective. Complete
Troubleshooting Procedure Table
Steps Action and Questions Yes No