Bunn JDF-4SB Manual De Usuario

40

Removal and Replacement:

1.  Disconnect power from the dispenser.

2.  Remove the five #6-32 screws securing the door 

cover to the door.

3.  Carefully lower the door cover and disconnect the 

lamp terminals from the LED regulator board.

4.  Remove and discard the faulty LED board.

5.  Install a new LED regulator board exposing the 

adhesive backing.

6.  Refer to Fig. 54 and reconnect wires to the LED 

regulator board.

7.  Replace the door cover and secure with the five 

#6-32 screws.

8.  Return power to the dispenser.

FIG. 54 LED DOOR LIGHT WIRING

FIG. 53 LED DOOR LIGHTS

Location:

The LED door lights are located inside the dispenser 

door.

Test Procedures:

No illumination at all: First verify that the dispense 

lockout switch has not been turned off!

1.  Disconnect power from the dispenser.

2.  Check the voltage across the black and red leads ofJ2 

or J3 at the LED regulator board with a voltmeter. 

Reconnect power to the dispenser. The indication 

must be 24 volts dc.

3.  Disconnect power from the dispenser.

If voltage is present as described, the LED regulator 

board is working correctly.

If voltage is not present as described, go to step 4.

4.  Check for supply voltage (unregulated +30VDC) 

across brown wire and white wire at J1 of the 

regulator board. (FIG 54).

If voltge is present as described, replace LED regulator 

board.

If voltage is not present as described, check the wiring 

back to the main CBA.

White to brown

unregulated +30VDC

J1

J2

J3

LED regulator board

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