Whirlpool WFW3090GW, Руководство по обслуживанию

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3-6
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Whirlpool Compact Front Load Washer
TESTING COMPONENT
For Service Technician Use Only
TEST #2: User Interface (UI)
This test is performed when any of the following situations
occurs during the Service Test Cycle (see pages 2-4 and 2-5):
¾
None of the indicators or display turn on
¾
Some buttons do not light indicators
¾
No beep sound is heard
None of the indicators or display turn on:
1. Unplug washer or disconnect power.
2. Gently lay washer on its right side to access the ACU.
3. Visually check that all ACU connectors are inserted all the
way into the ACU. See Figure 2, page 3-5.
4. Remove console assembly. Do not pull on the wires
between the console and ACU.
5. Visually check that all UI connectors are inserted all the
way into the UI.
6. Visually check that the UI and housing assembly is
properly inserted into the front console.
7. If all visual checks pass, perform TEST #1: ACU Power
Check, page 3-4, to verify supply voltage and health of
microcontroller.
¾
If supply voltages are present and microcontroller is
functioning properly, replace the user interface and
housing assembly.
¾
If supply voltages are not present, replace the ACU.
8. Reassemble all parts and panels.
9. Plug in washer or reconnect power.
10. Perform the Service Test Cycle on pages 2-4 and 2-5 to
verify repair.
Some buttons do not light indicators:
1. Unplug washer or disconnect power.
2. Remove the top panel to access the User Interface (UI).
3. Visually check that the UI and housing assembly is
properly inserted into the front console.
4. If visual check passes, replace the UI and housing
assembly.
5. Reassemble all parts and panels.
6. Plug in washer or reconnect power.
7. Perform the Service Test Cycle on pages 2-4 and 2-5 to
verify repair.
No beep sound is heard:
1. Unplug washer or disconnect power.
2. Gently lay washer on its right side to access the ACU.
3. Visually check that all ACU connectors are inserted all the
way into the ACU. See Figure 2, page 3-5.
4. Remove console assembly. Do not pull on the wires
between the console and ACU.
5. Visually check that all UI connectors are inserted all the
way into the UI.
6. If all visual checks pass, replace the UI and housing
assembly.
7. Perform the Service Test Cycle on pages 2-4 and 2-5 to
verify repair.
WARNING
Electrical Shock Hazard
Disconnect power before servicing.
Failure to do so can result in death or
electrical shock.
Replace all parts and panels before operating.
3$*(
FOR SERVICE TECHNICIAN’S USE ONLY
DO NOT REMOVE OR DESTROY
TEST PROCEDURES
IMPORTANT: The following procedures
may require the use of needle probes
to measure voltage. Failure to use needle
probes will damage the connectors. To
ease the process of measuring voltage
and resistance, test points for each pin are
accessible through the slots in the plastic
beneath each ACU connector.
TEST #1: ACU Power Check
This test checks for incoming and outgoing power
to and from Appliance Control Unit (ACU). This test
assumes that proper voltage is present at the outlet.
1. Unplug washer or disconnect power.
2. Gently lay washer on its right side
to access the ACU.
3. Visually check that all connections to the
interference filter (IF) are securely connected.
See Figure 2, below.
4. Visually check that all connections to the
ACU are fully inserted. See Figure 3, below.
5. If both visual checks pass, go to step 6.
6. Plug in washer or reconnect power.
7. With a voltmeter set to AC, check for line
voltage at the input of the interference filter.
See Figure 2.
¾
If line voltage is present, go to step 8.
¾
If line voltage is not present, verify the
continuity of the power cord. If it fails the
continuity check, replace the power cord.
8. With a voltmeter set to AC, check for line
voltage at the output of the interference filter.
See Figure 2.
¾
If line voltage is present, go to step 9.
¾
If line voltage is not present, replace the
interference filter.
9. With a voltmeter set to AC, check for input
line voltage to the ACU across pins 1 and 2
of connector J42 AC Input (IF). See Figure 3.
¾
If line voltage is present, go to step 10.
¾
If line voltage is not present, check
harnesses and connections between the
filter and the ACU. Visually inspect inside
connector housing for bent or damaged
terminals. Repair as necessary.
Figure 3 - Appliance Control Unit (ACU)
Figure 2 - Interference Filter (IF)
Filter Output - Line (BU)
Filter Input - Power Cord Line (BK) Filter Input - Power Cord Neutral (WT)
Filter Output - Neutral (BU)
J15-Inlet Valve
(1,2,3)
Drain Pump
(5,6)
1
2
3
5
6
WV-DP
1
2
3
MOT
J36-Motor
1
2
HE
J41-Heater
1
2
IF
J42-AC Input
1
2
3
DSS
J43-Door Lock/
Switch
J21-User
Interface
(CUIO)
(12,11,10,9)
APS
(7,6,5)
12
11
10
9
7
6
5
SB-PRS-UI
3
4
AQS-NTC
J23-NTC
(3,4)
UI Connector on ACU
Figure 1 - UI Connector Location on ACU