Whirlpool WFW3090GW, Руководство по обслуживанию, Страница: 39 / 70

COMPONENT TESTING
Whirlpool Compact Front Load Washer
n
3-9
For Service Technician Use Only
TEST #4: Door Lock System
Check the relays and electrical connections
to the door lock by performing the Service
Test Cycle on pages 2-4 and 2-5. The
following steps assume the door cannot
lock or unlock during that test. Perform
the following checks if the washer does
not lock (or unlock).
1. Check door lock mechanism for
obstruction or binding. Repair as
necessary.
2. Unplug washer or disconnect power.
3. Gently lay washer on its right side to access the ACU.
4. Visually check that the
J43 (door switch) connector is
inserted all the way into the ACU.
¾
If visual check passes, go to step 5.
¾
If any of the connectors are not inserted properly,
reconnect and retest door lock.
5. Disconnect the J43 connector from the ACU.
NOTE : To measure the door lock switch in the “locked”
position, plug in washer or reconnect power. Press the
POWER button, select any cycle, and then press START .
Actuation of the door lock solenoid should be heard.
At that point, unplug the washer and disconnect J43
from the ACU and measure resistance across pins 2 & 3
(ACU side). Resistance should measure according to the
following chart:
Component Resistance Contacts Measured
Door Lock
Solenoid
60-90 ohms
(Door must be
closed)
J43-1 J43-2
Door Switch Door Open =
Open Circuit
Door Closed =
60-90 ohms
J43-1 J43-2
Lock Switch Locked =
0 ohms
Unlocked =
Open Circuit
J43-2 J43-3
¾
If resistance values are good, go to step 6.
¾
If any of the measurements are out of range, check the
harness of the suspected component between the ACU
and door lock mechanism for continuity.
¾
If the harness and connections are good, replace the
door lock mechanism. IMPORTANT : To minimize risk of
damage to door lock/switch wires, remove the door lock
mechanism screws before removing the front panel.
6. If the preceding steps did not correct the lock problem,
replace the ACU and retest door lock mechanism.
¾
Unplug washer or disconnect power.
¾
Replace the ACU.
¾
Reassemble all parts and panels.
¾
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.
MAIN BOARD
DOOR LOCK ASSEMBLY
DOOR LOCK ASSY
LOCK SWITCH
DOOR SWITCH
LOCK SOLENOID
J43-1
J43-2
J43-3
3
2
1
60 - 90 Ohms
Figure 2 - Door Lock Strip Circuit
DOOR LOCK SYSTEM
Figure 1 - Door Lock