Graco 312787G Replace the Color Change Board, Pin Nos Description Diagnosis

Troubleshooting

Table 4: Color Change Board Diagnostics

	Connector	Board 1 Signal	Board 2 Signal
LED	and Pin Nos.	Description	Description	Diagnosis
D8	n/a	Board OK	Board OK	Blinks (heartbeat) during nor-
				mal operation.
D9	n/a	Communication (yellow)	Communication (yellow)	Turns on when board is com-
				municating with ProMix 2KS.
D10	J7	Power	Power	Turns on when power is sup-
				plied to the board.
D27	J15, 5 & 6	Color 3	Color 16
D28	J14, 3 & 4	Color 1	Color 14
D29	J8, 5 & 6	Color 6	Color 19
D30	J14, 1 & 2	Color 2	Color 15
D31	J8, 3 & 4	Color 7	Color 20
D32	J16, 3 & 4	Catalyst 4	Color 26
D33	J8, 1 & 2	Color 8	Color 21
D34	J9, 5 & 6	Color 9	Color 22	D27 through D46 turn on when
D35	J15, 3 & 4	Color 4	Color 17
				ProMix 2KS sends a signal to
D36	J14, 5 & 6	Solvent (Color)	Color 13	actuate the related solenoid
				valve.
D37	J10, 5 & 6	Catalyst 2	Color 28
D38	J16, 1 & 2	Catalyst 3	Color 27
D39	J16, 5 & 6	Color 12	Color 25
D41	J15, 1 & 2	Color 5	Color 18
D43	J9, 3 & 4	Color 10	Color 23
D44	J9, 1 & 2	Color 11	Color 24
D45	J10, 3 & 4	Catalyst 1	Color 29
D46	J10, 1 & 2	Solvent (Catalyst)	Color 30

Replace the Color Change Board

1.Remove electrical power from the system. Remove the color change module cover (30).

2.See FIG. 7 on page 12. Note where each cable is connected, then disconnect all cables from the color change board connectors (J7, J8, J9, J10, J11, J14, J15, J16).

3.Remove the six mounting screws (16) and the board (15).

4.Install the new board (15). Reinstall the screws (16).

5.Reconnect the cables to the proper connectors, as noted in step 2.

6.Reinstall the cover (30). Restore electrical power to the system.

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