Whirlpool Cabrio WTW5700XW, Technical Education

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6-8
10. With a voltmeter set to DC, connect the
black probe to J2-3 (Circuit Gnd) and red
probe to J2-4 (+13VDC).
 If +13VDC is present, go to step 11.
 If +13VDC is not present, go to step 17.
11. With a voltmeter set to DC, connect the
black probe to J2-3 (Circuit Gnd) and red
probe to J2-2 (RPM input). Slowly turn drum
by hand. Voltage should toggle between 0
and +5VDC.
 If voltage is not confirmed, go to step 12.
 If voltage is confirmed, go to step 17.
12. Unplug washer or disconnect power.
13. Tilt washer back to access the bottom
of the washer and the drive motor area.
14. Visually check the electrical connections
to the shifter.
 If visual check passes, go to step 15.
 If connections are loose, reconnect the
electrical connections and repeat step 1.
15. With an ohmmeter, check the harness for
continuity between the shifter and main
control using the following pinouts. See
chart below.
 If there is continuity, go to step 16.
 If there is no continuity, replace the lower
machine harness and repeat step 1.
Resistance should be between 2k to 3.5k Ω.
 If values are correct, reconnect J16 and
proceed to step 7.
 If values are open or out of range,
go to step 13.
7. Plug in washer or reconnect power.
8. With a voltmeter set to AC, connect the black
probe to J16-2 (N) and red probe to J16-1
(L1). Activate shifter motor by switching
between Spin and Agitate modes. Energize
outputs using Manual Test Mode.
IMPORTANT:
Lid must be closed with Lid Lock
enabled to run the SPIN and AGITATE
tests.
NOTE: It will take between 4-15 seconds for
the shifter to change states.
 If 120VAC is present, go to step 9.
 If 120VAC is not present, to step 17.
Shifter Switch:
9. With a voltmeter set to DC, connect the
black probe to J2-3 (Circuit Gnd) and red
probe to J2-1 (Shifter Switch). In manual
test mode, switch between Spin and Agitate
modes. Voltage should toggle between 0
and +5VDC.
SPIN = +5 VDC
AGITATE = 0 VDC
 If voltage corresponds to setting, go to step 10.
 If voltage does not switch, go to step 12.
Optical Sensor:
TROUBLESHOOTING GUIDE (continued)
FOR SERVICE TECHNICIANS ONLY
IMPORTANT:
Lid must be closed with Lid Lock
enabled to run the SPIN and AGITATE tests.
NOTE: It will take between 4-15 seconds for
the shifter to change states.
If 120VAC is present, go to step 9.
If 120VAC is not present, to step 17.
Shifter Switch:
9. With a voltmeter set to DC, connect the
black probe to J2-3 (Circuit Gnd) and red
probe to J2-1 (Shifter Switch). In manual test
mode, switch between Spin and Agitate modes.
Voltage should toggle between 0 and +5VDC.
SPIN = +5 VDC
AGITATE = 0 VDC
If voltage corresponds to setting, go to
step 10.
If voltage does not switch, go to step 12.
Optical Sensor:
10. With a voltmeter set to DC, connect the
black probe to J2-3 (Circuit Gnd) and red
probe to J2-4 (+13VDC).
If +13VDC is present, go to step 11.
If +13VDC is not present, go to step 17.
11. With a voltmeter set to DC, connect the black
probe to J2-3 (Circuit Gnd) and red probe to J2-2
(RPM input). Slowly turn drum by hand. Voltage
should toggle between 0 and +5VDC.
If voltage is not confi rmed, go to step 12.
If voltage is confi rmed, go to step 17.
12. Unplug washer or disconnect power.
13. Tilt washer back to access the bottom
of the washer and the drive motor area.
14. Visually check the electrical connections
to the shifter.
If visual check passes, go to step 15.
If connections are loose, reconnect the
electrical connections and repeat step 1.
15. With an ohmmeter, check the harness for
continuity between the shifter and main control
using the following pinouts. See chart below.
If there is continuity, go to step 16.
If there is no continuity, replace the lower
machine harness and repeat step 1.
16. Replace the shifter assembly.
a. Unplug washer or disconnect power.
b. Replace shifter assembly.
c. Reassemble all parts and panels.
d. Plug in washer or reconnect power. Calibrate
washer and perform Automatic Test to verify repair.
17. Replace main control.
a. Unplug washer or disconnect power.
b. Replace the main control.
c. Reassemble all parts and panels.
d. Plug in washer or reconnect power. Calibrate
washer and perform Automatic Test to verify repair.
TEST #3b: Drive System – Motor
This test checks the motor, motor windings,
wiring, and start capacitor.
NOTE:
Refer to Figure 5, “PSC Motor Strip
Circuit” on page 15 for tests and measurements.
IMPORTANT: Drain water from tub before
accessing bottom of washer.
1. Check the motor and electrical connections
by performing the Gentle or Heavy Agitation test
under Manual Test Mode on page 9. The following
steps assume that this step was unsuccessful.
Figure 4 - Shifter Assembly Strip Circuit (Shifter Switch: Open = SPIN, Closed = AGITATE)
Main Control
Shifter Assy
J2-3
J16-1
J7-1
L1
Main Control
J2-4
J2-2
J16-2
J2-1 Pin 7
Pin 6
Pin 3
Pin 5
Pin 4
Pin 2 J7-3
K8
Circuit Ground
N
+13VDC
120VAC
Motor
Shifter Switch
Optical
Sensor
Shifter Position
Input
RPM Input
Motor Resistance 2k to 3.5k ohms
Shifter Motor Relay
Shifter to Main Control & Drain Pump
Shifter Connector Pin-2 to Main Control J16-2
Shifter Connector Pin-3 to Main Control J16-1
Shifter Connector Pin-4 to Main Control J2-4
Shifter Connector Pin-5 to Main Control J2-3
Shifter Connector Pin-6 to Main Control J2-2
Shifter Connector Pin-7 to Main Control J2-1
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Figure 5 - PSC Motor Strip Circuit (shown in ON position)
Main Control
CW TRIAC
Main Control Main Control
CCW TRIAC
J15-3
J15-4
J16-5 Pin 9
Pin 1
Pin 6
Pin 3 J16-7
J16-6
J7-3
J7-1
PSC Motor
Run
Cap
CW Winding
CCW Winding
Lock Switch
N
L1
Each Winding 3.5 to 6 ohms
1
3
2. Unplug washer or disconnect power.
3. Check to see if basket will turn freely.
If basket turns freely, go to step 4.
If basket does not turn freely, determine what
is causing the mechanical friction or lockup.
4. Remove console to access main control.
5. Visually check that the J2 and J16 connectors
are inserted all the way into the main control.
If visual checks pass, go to step 6.
If connectors are not inserted properly,
reconnect J2 and J16 and repeat step 1.
6. Plug in washer or reconnect power. Run the
Gentle Agitation test under Manual Test Mode.
7. With a voltmeter set to AC; connect black
probe to J16-5 (N) and red probe to J16-6
(CW Winding).
If 120VAC is cycling ON during CW rotation,
go to step 8.
If 120VAC is not present, go to Test #1:
Main Control, page 12.
8. With a voltmeter set to AC, connect black probe
to J16-5 (N), red probe to J16-7 (CCW Winding).
If 120VAC is cycling ON during CCW
rotation, go to step 9.
If 120VAC is not present, go to Test #1:
Main Control, page 12.
9. Unplug washer or disconnect power.
10. Remove connector J16 from main
control. With an ohmmeter, verify resistance
values shown below across the following J16
connector pinouts:
Resistance should be between 3.5 and 6 Ω .
If values are open or out of range, go to step 11.
If values are correct, go to step 15.
11. Tilt washer back to access the bottom
of the washer and the drive motor area.
12. Visually check the mounting bracket and
electrical connections to the motor and shifter.
If visual check passes, go to step 13.
If connections are loose, reconnect the
electrical connections, reassemble motor
cover, and repeat step 1.
13. With an ohmmeter, check the harness
for continuity between the main control, motor,
and run capacitor using the following test
points. See chart.
If there is continuity, go to step 14.
If there is no continuity, replace the lower
machine harness and repeat step 1.
14. With an ohmmeter, check the motor
windings at the following motor connections.
Resistance should be between 3.5 and 6 Ω .
If values are open or out of range, replace
motor.
If values are correct, go to step 15.
Motor Winding J16 Connector Pinout
CW Winding J16, 5 & 6
CCW Winding J16, 5 & 7
Motor Harness Check
Motor Connector Pin-1 to Chassis Ground
Motor Connector Pin-3 to Main Control J16-7
Motor Connector Pin-3 to Run Capacitor Pin-3
Motor Connector Pin-6 to Main Control J16-6
Motor Connector Pin-6 to Run Capacitor Pin-1
Motor Connector Pin-9 to Main Control J16-5
Motor Winding Motor Pinout
CW Winding Pins 4 & 6
CCW Winding Pins 3 & 6
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Figure 4 - Shifter Assembly Strip Circuit (Shifter Switch Open = SPIN, Closed = AGITATE)