4-29
Controller Troubleshooting
TP-5672 11/95
Is there a jumper from terminals
TB-DC1-10 to TB-DC1-32 on
the power supply board?
Do pins 11 and 15 on plug P3 short
when the plant exerciser is active?
Place a jumper across terminals 21
and 31 on TB-DC1 of the power supply
board. Does the generator set start?
Is the plant exerciser programmed
correctly in index 8? See TP-5664
for programming information.
Do pins 11 and 15 on
plug P2 short when the
plant exerciser is active?
Place a jumper across the
start terminals 3 and 4 on the
power conversion unit. Does
the generator set start?
Install jumper lead between
terminals TB-DC1-10 and
TB-DC1-32 of the power
supply board.
Replace the
logic board.
Replace the ribbon cable
between plugs P2 and P3.
Replace the
logic board.
Reprogram the plant
exerciser. Refer to TP-5664
for programming instructions.
Check engine start circuit
for an open circuit.
Replace the wiring harness
between TB-DC1 and the
power conversion unit.
Yes
Yes
Yes
No
Yes
No
No
No
No
No
Yes
Yes
Yes
No
Yes
Is the Plant Exer jumper
installed in JP1 on the logic
board?
Install the Plant Exer jumper
on JP1 and power down the
controller for 1 minute
mininum.
In Index 11 is Plant
Exerciser enabled?
Troubleshoot
shunt-jumper
controlled options.
See Figure 4-18.
No
Figure 4-28. Troubleshooting— Accessory 23-D, plant exerciser does not work