Test #8: Drum Led - Whirlpool WED9500E SERIES Service Manual

DANGER
Electrical Shock Hazard
Only authorized technicians should perform
diagnostic voltage measurements.
After performing voltage measurements,
disconnect power before servicing.
Failure to follow these instructions can result in
death or electrical shock.
J2 – WIDE TO UI (+5 VDC)
J2-1 BLK +5VDC
J2-2 BLU DATA

TEST #8: Drum LED

J2-3 YEL 5V GND
J8 – WATER VALVE/DOOR SWITCH
NOTE: Refer to the strip circuit at right (Figure 2) to diagnose
the drum LED.
J8-5
This test is performed if the drum LED does not light.
J8-4 TAN DOOR SWITCH
1. Unplug dryer or disconnect power. J8-3 WHT NEUTRAL
J8-2 G/Y CHASSIS GND
2. Remove the console to access ACU and user interface (UI).
J8-1 RED WATER VALVE
3. Verify that the drum LED connector J6 is securely
connected to the ACU (see Figure 1).
4. Check harness and inline connections between the drum
LED and ACU.
¾ If the harness and connections are good, go to step 5.
¾ If not, repair or replace as needed.
CONTROL BOARD
Heater Relay #1
(Gas & Elect.)
Heater (E) – VLT
Heater (G) – RED
Heater Relay #2
(Elect. Only)
L1 – BLK
Figure 2 - ACU Connectors & Pinouts
For Service Technician Use Only
FOR SERVICE TECHNICIAN'S USE ONLY
DRUM LED CIRCUIT
J6 – DRUM LED
OPEN
J14-4 BLK
(ON SOME MODELS) J14-5 BLK
J14-6 R/W
J9
L1 – BLK
K2
K1
K3
Heater – VLT
J8
Figure 1 - Drum LED Connector
5. Unplug the drum LED connector J6 from the ACU.
6. With a multimeter set to milliamps, connect multimeter to
ACU connector J6, pins 1 and 3. Plug in dryer or reconnect
power. Open the door. Measure the current across ACU
connector J6, pins 1 and 3. If the drum LED driver is
working properly, there should be a measurement of 150
mA.
¾ If the current is present, unplug dryer or disconnect
power and replace the drum LED.
¾ If the current is not present, unplug dryer or disconnect
power and replace the ACU.
7. Reassemble all parts and panels.
DRUM LED STRIP CIRCUIT
J9 – MOTOR/L1
J6-1 RED
ACU
J6-2 BLK
J6-3
J6-4
J13 – MOISTURE SENSOR
J14 – THERMISTORS
MODEL (GAS)
MODEL RTN (GAS)
OUTLET THERMISTOR
Figure 2 - Drum LED Strip Circuit J23 – REAR MOISTURE SENSOR
Motor Relay
Whirlpool & Maytag 9.2 Cu. Ft. Steam Dryer
COMPONENT TESTING
J9-2 BLK L1
J9-1 LT BLU MOTOR
R R
J6-1
J13-1 BLK MOISTURE SENSOR
J13-2 RED MOISTURE SENSOR
DRUM LED
J6-2
J14-1 RED INLET THERMISTOR
BK BK
J14-2 RED INLET THERMISTOR
J14-3 R/W OUTLET THERMISTOR
(on some models)
J23-1 Y/R MOISTURE SENSOR
J23-2 YEL MOISTURE SENSOR
J23
(on some
models)
J13
J2
J6
J14
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