Section 5 Decision-Makerr 550 Controller; General Repair Information - Kohler Decision-Maker 1 Manual

5.1 General Repair Information

This section contains Decision-Makerr 550 controller
repair information. Service replacement of the
controller is limited to the items shown in Figure 5-1.
Refer to the respective controller parts catalog for
service part numbers. No other replacement service
parts are available.
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16
Front Panel View of Controller
1. Service kit
(Includes 12 V controller assembly, [2] lamps, and literature)
2. Switch, key (optional)
3. Switch, emergency stop pushbutton
4. Lamp, panel (2)
5. Rotary switch
6. Vibromount (4)
7. Circuit board, main logic
(not available as a service part, order Item 1)
8. Cable, ribbon, 34-position
(P17 on main logic board to P5 on interconnection board)
9. Cable, ribbon, 40-position
(P16 on main logic board to P4 on interconnection board)
10. Cable, ribbon, 24-position
(P12 on main logic board to P2 on interconnection board)
Figure 5-1 Decision-Makerr 550 Controller Service Replacement Parts
TP-6356 4/12

Section 5 Decision-Makerr 550 Controller

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2
X
X
X X X X
X XX
X X
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Before replacing the controller, remove all external
accessories and other electrical connections to verify
that these items are not the cause of the controller
problems. Verify that the accessories and connections
are functioning correctly before reconnecting them to
the new controller.
Electrical noise can affect the controller operation, refer
to Appendix F, Electrical Noise and Wiring Practices.
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5
6
7
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12
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11. Cable, ribbon 8-position
(P8 on status board to switch membrane keypad)
12. Cable, ribbon, 34-position
(P6 on status board to P14 on main logic board)
13. Front panel assembly
(replace entire front panel to replace switch membrane keypad)
14. Circuit board, display (kit-service only)
15. Cable, ribbon, 16-position
(P7 on status board to display board)
16. Circuit board, status (board with alarm horn)
17. Fuse, 1.5 A, 250 V (3)
18. Holder, fuse
19. Circuit board, interconnection
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Back Panel View of Controller
Section 5 Decision-Makerr 550 Controller
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