Bunn JDF-4SB Manual De Usuario

37

FIG.47 MEMBRANE SWITCHES

Location:
  The dispense buttons are located on the lower 

outside of the dispenser door and actuate switches on 

the dispense switch board located on the inside of the 

door.

Test Procedures:

NOTE: Before continuing, check that the ribbon cable 

is properly connected to the control board and not a 

pin off in either direction.

1.  Disconnect the dispenser from the power source.

2.  Remove the rear panel and disconnect ribbon 

cable.

3.  Check for continuity of the switches using pin #1as 

common.

FIG. 48 MEMBRANE SWITCH

COLD WATER DISPENSE

Removal and Replacement:

1.  Disconnect the dispenser from the power source.

2.  Open the dispenser door.

3.  Remove the four #8-32 screws securing the lower 

door panel and remove the panel.

4.  Disconnect the three pin harness from the switch 

board.

5.  Carefully peel the membrane switch from the front 

of the switch bezel.

6.  Remove any excess adhesive from the bezel sur-

face.

7.  Remove the backing from the new membrane 

switch.

8.  Feed the membrane switch harness through the 

openning and apply the new membrane switch to 

the switch bezel.

9.  Connect the switch harness to the control board.

If continuity is not present when the appropriate switch 

is pressed, the Membrane Switch must be replaced.

If continuity is present, chech the short harness going 

to J6 on the Control Board.

 

#1    Common

 

#2    Cold Water

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