Amana L-90, Руководство по обслуживанию

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COMPONENT TESTING
Amana Compact Washer
n
3-15
For Service Technician Use Only
TEST #8: Lid Lock Assembly
Perform the following checks if the washer does not lock (or
unlock).
1. Perform the Lid Switch Test under Manual Test Modes on
page 2-4. The following steps assume that this step was
unsuccessful.
2. Check lid lock mechanism for obstruction or binding.
Repair as necessary.
3. Unplug washer or disconnect power.
4. Access the UI/Control Board.
5. Visually check that the
CN5
and
CN7
connectors are
inserted all the way into the control board.
¾
If visual check passes, go to step 6.
¾
If either connector is not inserted properly, reconnect
the loose connector and repeat step 1.
6. Remove connector CN5 from control board. With an
ohmmeter, measure the resistance across the CN5, pins 1
and 2 (see Figure 2). Resistance should be 76-94
W
.
¾
If values are open or out of range, replace the lock
assembly.
¾
If values are correct, go to step 7.
7. Remove connector CN7 from control board. With an
ohmmeter, verify the lid lock resistance values shown
below across the following CN7 connector pinouts:
SWITCH RESISTANCE
Component
Resistance
Unlocked
Resistance
Locked
Contacts
Lock Switch
Open
Circuit
0
W
CN7-1 CN7-3
Lid Switch
Lid Closed = 0
W
Lid Open = Open Circuit
CN7-2 CN7-3
¾
If resistance values are good, go to step 8.
¾
If switch measurements do not match the values
shown in the table for unlocked (or locked) condition,
replace the lid lock assembly.
8. If the preceding steps did not correct the lock problem,
replace the UI/Control Board.
a. Unplug washer or disconnect power.
b. Replace the control board.
c. Reassemble all parts and panels.
d. Plug in washer or reconnect power. Perform the Lid
Switch Test under Manual Test Modes on page 2-4 to
verify repair.
Figure 1 - Lid Lock Schematic
Figure 2 - Lid Lock Assembly (Locked State)
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
LID LOCK ASSEMBLY
LID LOCK ASSY
L1
R
BU
LOCK SWITCH
LID REED SWITCH
BU
BU
BK BK
BK
R
R
GY
GY
W W
LOCK SOLENOID
CN7-1
CN5-1
CN5-3
CN7-3
CN7-2
+ 5 VDC
LOCK SW INPUT
N
LID REED SW INPUT
LID LOCK ASSEMBLY
Lock
Solenoid
Lid Reed
Switch
Lock
Switch
Lock Pin
76-94
W