Service and Repair Manual

26
SERVICE (cont.)
5. Check for continuity across the terminals on the
leads and the LED harness.
If continuity is present as described, the lamp is op-
erating properly.
If continuity is not present as described, replace the
lamp.
Removal and Replacement:
1. Disconnect the lamp cord assembly from the
lamp cord connector assembly in the top of the
dispenser.
2. Remove the display graphic from the dispenser
door.
3. Open the dispenser door.
4. Remove the five #6-32 screws securing the rear
door cover to the door.
5. Carefully lower the rear door cover and disconnect
the LED board leads from the lamp cord termi-
nals.
6. Remove and discard the faulty LED board.
7. Install a new LED board exposing the adhesive
backing.
8. Refer to Fig. 24 and reconnect wires to the LED
board.
9. Connect the leads to the lamp cord assembly and
replace the rear door cover.
10. Close the dispenser door.
11. Plug-in the lamp cord assembly to the lamp cord
connector assembly on top of the dispenser.
FIG. 24 LED DOOR LIGHT WIRING
P4111
OPTIONAL LED DOOR LIGHTS
FIG. 23 LED DOOR LIGHTS
P4110
Location:
The LED door lights are located inside the dispenser
door.
Test Procedures:
1. Disconnect the lamp cord from the lamp cord con-
nector.
2. Disconnect the black and red leads from the
LEDs.
3. Check the voltage across the two leads with a volt-
meter and Day/Night switch in the “DAY” position
and the ON/OFF switch in the “ON” position. Verify
that the dispenser hopper is full and in place, the
dispenser probe contact is making contact with the
ULTRA liquid level probe, and the dispenser door is
closed. Reconnect the lamp cord to the lamp cord
connector. The indication must be approximately
12 volts ac.
4. Disconnect the lamp cord from the lamp cord
connector.
If voltage is present as described, the LED board is
faulty.
If voltage is not present as described, retrace the wiring
circuit to find the fault.
to BLK at Lamp Cord
41087.1 060112