No Communication Between The Main Control Board And The Dispenser Board - GE GSS20 Series Technical Service Manual

No Communication Between the Main Control Board and the Dispenser Board

Does Continuity exist between:
Main Control Board J4-1 to Dispenser Board J4-1?
Main Control Board J4-2 to Dispenser Board J4-2? Repair faulty
No
Main Control Board J4-3 to Dispenser Board J4-3?
wiring.
Main Control Board J4-4 to Dispenser Board J4-4?
Main Control Board J4-5 to Dispenser Board J4-5?
Yes
Replace the dispenser control board.
Does the main control board
communicate with the dispenser board?
No
Replace the main
control board.
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