Kohler Decision-Maker 1 Manual page 38

1 2 3 4
21
20
19
18
1. K2 relay: control relay (crank)
2. K3 relay: control relay (run/fuel)
3. K1 relay: emergency stop
4. LED1 (emergency stop)
5. TB1 (TB1A) terminal strip
6. TB3 (TB1B) terminal strip
7. DIP switches
8. TB2 terminal strip
Figure 3-2 16-Light Controller Circuit Board GM28725 (Red Board) Components
Figure 3-3 16-Light Controller Circuit Board GM64497 (Blue Board) Components (same as GM28725 except for
U12 microprocessor)
38 Section 3 Decision-Makerr 3+ Troubleshooting
5
17 16 15
9. P22 for CAN (engine) communication
connection
10. P21 for Modbus RS-485 communication
connection
11. P3 connector (control panel harness) to P4
(LED indicator panel circuit board)
12. Microprocessor chip
13. LED4 (overvoltage)
14. R42 overvoltage adjustment
14 13 12
15. P1 connector (DC harness)
16. LED3 (K3 relay)
17. P2 connector (AC harness)
18. LED2 (K2 relay)
19. Fuse: 3 amp (F1) remote annunciator,
20. Fuse: 3 amp (F2) controller
21. Fuse: 15 amp (F3) engine and
6
7
11
battery positive (+) 42A connection
accessories
TP-6356 4/12
8
9
10
GM28725-D
GM64497-G