Kohler M340+ - Page 73

5-12 Accessory Troubleshooting
TP-5672 11/95
Replace the bypass switch.
Yes
Yes
Yes
No
Yes
Yes
Is the emergency power
source available?
Is there a TDNE time delay
set in Index 5 of the
microprocessor program?
Place a jumper between terminals
TB-DC1-3 and TB-DC1-33 on the
power supply board. Does the switch
transfer to the emergency source?
Emergency source must be
present to bypass the time
delay normal-to-emergency.
Program a TDNE time
delay in index 5 of the
microprocessor program.
Disconnect the in-line plug to remove
power from the logic board. Remove
the ribbon cable between P2 on the
power supply board and P3 on the logic
board. Check the ribbon cable for any
open or shorted leads. Are there any
open or shorted leads?
Replace the ribbon cable
between P2 on the power
supply board and P3 on the
logic board.
Is there continuity between pin P2-3
on the ribbon cable and TB-DC1-3 on
the power supply board?
Replace the logic board.
Replace the power
supply board.
Is there continuity between terminal
TB-DC1-3 on the power supply board
and terminal 3 on the bypass switch?
Is there continuity between
terminal TB-DC1-33 on the
power supply board and
terminal 4 on the test switch?
Replace the lead from terminal
TB-DC1-3 on the power supply
board to the bypass switch.
No
No
Yes
No
Replace the lead from terminal
TB-DC1-33 on the power supply
board to the bypass switch.
No
Yes
No
No
Figure 5-13. Troubleshooting—Option DD-08-C, Normal-to-emergency time delay pushbutton does not
work