DOWNLOAD LG WP-780NP Service Manual ↓ Size: 1.9 MB | Pages: 25 in PDF or view online for FREE

Model
WP-780NP
Pages
25
Size
1.9 MB
Type
PDF
Document
Service Manual
Brand
Device
Washing Machine
File
wp-780np.pdf
Date

LG WP-780NP Service Manual ▷ View online

-17-
Trouble
Cause
Repair Method
Spin Drying
While spining, spin dryer
basket is unbalanced.
Spining operation is not
proper.
After opening spin dryer cover,
spin dryer basket continues
revolving.
Installation is unbalanced.
Installed area is not level.
Load in spin dryer basket is
unbalanced.
Bellows assembly is damaged.
Center between spin shaft and
coupling is unbalanced.
Brake is defective.
Spin shaft is clogged.
Drain hose is clogged.
Bearing for bellows assembly is worn.
Brake is defective.
Vent is turned over or is not secure.
(WP-730NP)
Vent is faulty. (WP-730NP)
Advise the customer to install the
washing machine in a more stable
location.
Re-distribute the load.
Advise the customer of correct loading.
Replace with a new one.
Balance completely.
Adjust brake properly.
Remove blockage.
Remove blockage.
Replace with a new one.
Adjust brake properly.
Secure properly.
Replace with a new one.
Others
No draining
Drain pump does not operate 
(WP-730NP)
When draining water, water
does not flow out smoothly.
Noise
Valve selector position is defective
or is not correct.
Strap connection is defective.
Lint sticks to the filter or hoses.
Valve selector position is defective
or is not correct.
Wiring is defective.
Mini switch is defective.
Drain pump interior(runner) is
clogged.
Pump motor is defective.
Drain hose is clogged.
Lint is sticking to the plunger valve,
the filter or hoses.
Blockage between the pulsator and
the tub.
Bearing for pulsator shaft assembly
is worn.
Bearing of bellows assembly is
worn.
Set valve selector to proper position.
Advise the customer.
Adjust properly.
Remove lint and clean.
Set valve selector to proper position.
Advise the customer.
Rewire properly.
Replace with a new one.
Remove blockage.
Replace with a new one.
Remove blockage.
Remove lint and clean.
Remove blockage.
Replace with a new pulsator shaft
assembly.
Replace with bellows assembly.
-18-
❒ 
Voltage change(only 
Dual voltage)
Models equipped for dual voltage can be adjusted to operate on a power supply of either 110(or 127) or 220 volts.
However, in order to avoid the danger of fire and prevent damage to the washing machine, the voltage setting
must match the voltage of your power supply. The voltage set at the factory is indicated on the "PRESENT
VOLTAGE" column in the spec. label on the back of the washing machine.
To change the voltage setting, follow the procedure that follows:
1. Unplug the power cord from the electrical outlet, by grasping the plug itself.
2. Use a screwdriver to remove the back cover from the washing machine(Fig. a).
3. Remove the polyethylene bag covering the lead wire housings(Fig. b).
4. To change the voltage setting from 220V to 110(or 127)V, disconnect the housing marked "220V" and connect
the housing marked "110 (or 127)V", to change the voltage setting from 110(or 127)V to 220V, disconnect the
housing marked “110(or 127)V” and connect the housing marked "220V"(Fig. c).
5. Cover the housings with the polyethylene bag and reattach the back cover.
6. Be sure to indicate the new voltage setting on the "PRESENT VOLTAGE" column in the spec. label for future
reference.
VALVE SELECTOR (CYCLE SELECTOR)
SPIN TIMER
WASH • RINSE
DRAIN
OFF
ON 
OFF
Drain Pump
Pumping
Pumping
Off
Pumping
Off
❒ 
Drain Pump Operation(Pump model only)
Fig. a
Fig. b
Fig. c
Others
Water leakage
Hose connection is not secured.
Bearing for pulsator shaft assembly
is worn.
Plunger valve bellows is damaged.
Plunger valve assembly is
damaged.
Bellows assembly is damaged.
Bellows connection is not secured.
Secure firmly.
Replace with a new pulsator shaft
assembly.
Replace with a new one.
Replace with a new one.
Replace with a new one.
Secure firmly.
Trouble
Cause
Repair Method
-19-
8. SCHEMATIC DIAGRAM
1)WP-730N
OR/WH
SPIN
TIMER
SPIN
TIMER
PUMP
MOTOR
OR/WH
BK
BK
BK
MINI S/W
NC
COM
NO
BL/WH
DOOR
S/W
DOOR
S/W
WASH
TIMER
WASH
TIMER
SPIN
MOTOR
SPIN
MOTOR
WASH
MOTOR
BK
YL
RD
GY
WH
WH
WH(BL)
WH(BL)
BK
(BN)
BK
(BN)
GN(GN/YL)
BK
BK
NC
NO
COM
MINI
S/W
DOOR
S/W
DOOR
S/W
OR/WH
OR/WH
SPIN
TIMER
SPIN
TIMER
WASH
TIMER
WASH
TIMER
WASH
MOTOR
WASH
MOTOR
PUMP
MOTOR
SPIN
MOTOR
SPIN
MOTOR
YL/GN
YL/GN
YL/GN
YL/GN
RD
RD
RD
RD
220V
220V
YL
YL
YL
YL
YL
YL
YL
RD
YL
YL
YL
YL
YL
BK/YL
BK/YL
BK/YL
BK/YL
YL
VL
VL
VL
VL
PK
PK
PK
PK
OR/WH
OR/WH
OR/WH
BN/WH
BL/WH
BN/WH
BK/WH
BK/WH
BK/WH
BK/WH
BK(BN)
BK(BN)
BN
BN
BN
BL
BL
BL
BL
GN
(GN/YL)
GN
(GN/YL)
RD/WH
RD/WH
RD/WH
WH
WH
WH
WH
WH
WH
RD/WH
WH
WH
WH
WH(BL)
WH(BL)
WH
OR
OR
OR/WH
OR
OR
110(127V)
110(127V)
SKBL
SKBL
GY
GY
GY
GY
GY
GN
BN
BN
BN
GN
GY
GY
GY
GY
GY
GY
GY
GN(GN/YL)
BK/YL
WASH
MOTOR
YL
RD
GY
BK/YL
2)WP-730N(Dual Voltage)
3)WP-730NP
4)WP-730NP(Dual Voltage)
A12
A11
A01
A09
A02
C12
C16
D09
A07
A06
A08
A05
A03
A10
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