Diagnostic Information 2-75
5016-001
8 LVPS Fuses
F401, F402
either or both
continue to blow
after being
replaced.
(Continued)
The problem might be with any +24 V dc device,
such as stepper motor, solenoid or clutch
connected to the engine board. Remove and
replace one FRU at a time until you find the
failing component.
Note: A shorted motor, case to winding short,
may also damage the engine board. It may be
necessary to replace both the motor and the
board.
9 AC Input
Receptacle
Check the AC input receptacle for signs of
damage.
• If damage is found, replace the receptacle.
• If no damage is found, go to step 10.
10 AC receptacle
to AC On/Off
Wiring.
Check that the wiring is correctly installed and
connected to the AC input receptacle and the
AC On/Off switch. Check the wiring for signs of
damage.
• If correct, check the blue and gray wires for
continuity and go to step 11.
• If incorrect, replace the faulty cable.
11 AC On/Off
Switch LVPS to
AC On/Off
Switch Wiring
Check the wiring from the LVPS to the AC
On/Off switch verifying it is installed properly
and not damaged. If incorrect, replace the
switch.
FRU Action
