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Removal and Replacement:
1. Disconnect the ten pin plug from the main wiring
harness to the circuit board.
2. Remove the six #4-40 screws and spacers securing
the circuit board to the solenoid mounting bracket.
Remove circuit board and discard.
3. Install new circuit board using #4-40 screws and
spacers to secure the circuit board to the vacuum
switch mounting bracket. The spacers must be
between the solenoid mounting bracket and the
circuit board.
4. Refer to Fig. 3 for circuit board ten pin connector.
FIG. 3 CIRCUIT BOARD CONNECTOR LOCATION
P1528
CIRCUIT BOARD
FIG. 2 CIRCUIT BOARD
P1556
OFF
O
N
OFF
O
N
OFF
O
N
SERVICE
Location:
The circuit board is located inside the autofill
box, mounted on the right side of the vacuum switch
mounting.
Test Procedure:
1. Disconnect the dispenser from the power source.
2. Disconnect the ten pin plug on the main wiring
harness from the connector on the circuit board.
3. Check the voltage across the black wire(#3) and
the white wire (#6) with a voltmeter. Connect the
dispenser to the power source. The indication
must be:
a) 120 volts ac for two wire 120 volt models.
b) 200 to 240 volts ac for two wire 200 or 240
volt models.
If voltage is present as described, replace the circuit
board.
If voltage is not present as described, refer to the
wiring diagrams and check the main wiring harness.
28791.1 011500