5-61
Accessory Troubleshooting
TP-5672 11/95
No
No
Yes
Yes
Yes
Yes
Yes
No
No
No
Place a jumper between terminals
TB-DC1-20 and TB-DC1-34 of the power
supply board. Does the generator set start
and transfer to the emergency source?
Is there continuity between terminal
TB-DC1-20 of the power supply board and
terminal 3 of the auto/manual switch?
Disconnect the in-line plug. Remove the
ribbon cable between plug P2 of the power
supply board and plug P3 on the logic
board. Check the ribbon cable for any
opens or shorts. Is there an open or short?
Replace the lead from terminal
TB-DC1-20 of the power supply board
to the auto/manual switch.
Replace the ribbon cable between
plug P2 of the power supply board
and plug P3 on the logic board.
Is there continuity between
terminal TB-DC1-34 of the power
supply board and terminal 4 of
the auto/manual switch?
Replace the
auto/manual switch.
Replace the lead from terminal
TB-DC1-34 of the power supply board
to the auto/manual switch.
Is there continuity between pin
P2-24 and terminal TB-DC1-20
of the power supply board?
Replace the power
supply board.
Replace the
logic board.
No
Place the auto/manual switch
in the MANUAL position.
Yes
Is the auto/manual switch
in the MANUAL position?
Figure 5-68. Troubleshooting— Option DD-29-U, -V, -W, and -X, Auto/Manual switch does not work in the
manual position