Bunn JDF-4SB Coffeemaker User Manual


 
39
SERVICE (CONT.)
Lamps, Holders and Ballast(s) (Early Models)
FIG. 51 LAMPS & HOLDERS
Location:
The lamps and lamp holders are located on the door
light panel behind the door cover.
Test Procedure:
1. Disconnect the dispenser from the power source.
2. Remove the five #10-32 screws securing the door
cover to the door and move the cover aside to gain
access to the light panel.
3. Rotate the lamp to remove from the lamp hold-
ers.
4. Check for continuity across terminals on each end
of the lamp.
If continuity is present as described, continue to step 5.
If continuity is not present as described replace the lamp.
5. Check for 24VDC supplied to ballast (dual ballast
black to red, single ballast white to red).
If voltage is present as described, replace ballast. If
voltage is not present as described, refer to the Wiring
Diagrams and check the wiring harness back to the
transfomer/rectifier.
Removal and Replacement:
1. Disconnect the dispenser from the power source.
2. Remove the five #10-32 screws securing the door
cover to the door and move the cover aside to gain
access to the light panel.
3. Rotate the lamp to remove from the lamp hold-
ers.
4. Pry the lamp holder from light panel.
5. Cut the two wires from the ballast as close the lamp
holder as possible and remove the lamp holder.
6. Strip the ends of the wires from the ballast and
install the into the new lamp holder.
7. Snap the new lamp holder into the holes on the
light panel.
8. Replace the lamps and install the door cover using
the five screws previously removed.
FIG. 52 LAMP HOLDERS
49179 110613