Service Manual

11
Location:
The Control Board is located inside the top cover
behind the front face plate.
Test Procedures:
The test procedures for the control board will vary
depending upon the problems experienced by the
brewer. Refer to the Troubleshooting section which
is divided into three sections, Refill Circuit, Heating
Circuit, and Brewing Circuit.
Check for Power to board:
1. Insert one meter lead in J17-pin 9 and the other
lead in J17-pin 11.
2. With the power connected to brewer, the voltage
reading to the board should be the line voltage
rated for that model.
If no voltage is present, check wiring to the
board. If voltage is present, and brewer does
not power on, go to step 3
3. Check for line voltage at J15-1 BLK to J15-2 WHI.
If no voltage is present, replace the control
board. If voltage is present, go to step 4
4. Check for 12VAC at J15-4 to J15-2 Yellow wires.
If no voltage is present, replace the trans-
former. If voltage is present, and brewer does
not power on, replace the control board.
FIG. 11-1 CONTROL BOARD
Removal and Replacement:
1. Disconnect brewer from power source.
2. Disconnect the wires from the relay on the control
board.
3. Disconnect all of the connectors from the control
board.
4. Remove the two screws securing the control board
to the faceplate.
5. Tilt the control board inward to clear the display
section.
6. Place the bottom edge of the new control board in
the cradle, tilt the board forward, and secure with
the two nuts to the hood.
7. Re-install connectors.
Faceplate Removal and Replacement:
1. Disconnect brewer from power source.
2. Disconnect the ribbon cable from the control
board.
3. Models with faucet: Drain tank to below faucet
outlet fitting. Remove hose, nut and washer from
faucet. Remove faucet assembly.
4. Remove the two screws and two nuts securing
the face plate to the hood.
5. Carefully pull the ribbon cable through the front
opening of the hood.
6. Installation is the reverse order.
CONTROL BOARD
FIG. 11-2 FACEPLATE REMOVAL
54299 070517