LG T2028AFPS5 Service Manual ▷ View online
4-3. WIRING DIAGRAM
37
WIRING DIAGRAM
38
1) SAFETY CAUTION
• The main power board assembly has exposed live Rating and live DC voltages. Use care when disconnecting
connectors during troubleshooting and testing. (Wear electrostatic discharge gloves when handling the board.
• Unplug the power when handling the board assembly. (Wear electrostatic discharge gloves when handling the
board. Store the board in an ESD [ElectroStatic Discharge] plastic bag.)
2) SERVICE MODE
The washer must be empty and the controls must be plugged in and turned off.
• Press the POWER button: then press and hold the SOFT and HOT buttons. The buzzer will sound twice.
• Press the Start/Pause button to advane to the subsequent test mode step.
4-4. TEST RUNNING WITHOUT WATER
Step
Mode
Action
Displayed Contents
Remark
t1
Main Version Check
All LEDs are lighted
‘Main VERSION’ and ‘Model
Option Character’
You can check ‘tE Error’
t2
Display Version check
and Button check
-
‘Display Version’
-
t3
Water
Valve
Check
-
-
Level frequency
(26.7kHz is displayed as 67)
Valve operates until
23.3kHz, and the power
is automatically turned
off at 23.3kHz. (Overflow
prevention)
A
Cold valve and Inlet valve for
bleach detergent is activated
B
Softener Dispenser and Hot
Valve are activated
C
Jet Spray Dispenser is activated
t4
Heater
Check
Heater On
Eye sensor correction group
value(1~26)
Heating is activated
t5
Alpha
Check
Carry out alpha
Water discharge starts
Alpha RPM
RPM : 220
On time : 180s
Slope : 30 rpm/sec
t6
Drain
Check
At water discharge level
frequency of 26.0kHz, after 50
sec., it is automatically changed
to T7.
Before the level frequency
reaching 26.0kHz, level
frequency is displayed after
reaching the longitude data.
-
t7
Load
sensing
Check
After completing spray
amount detection 1 time, it is
automatically changed to t8.
Displays spray amount detection
result value.
(Displays Err)
-
t8
Agitate
Check
Door Lock reset
Pulsator Mode change
Pulsator stirring starts
Displays spray amount detection
result value.
(Displays Err)
t9
Spin
Check
anddE
Error
Check
Basket Mode change
Spin dry starts
Before 500RPM: current RPM/
500RPM or more: UB value/
Before 500RPM: Max emission
value/
RSt: UB value
Current RPM is displayed in the
units of 2 sec.
After reaching the maximum
RPM, continuous MS
(40~90rpm) area for 200 sec.
UB No sense
t10
OFF
Power off
-
-
39
Many washing problems involve poor soil and stain removal, residues of lint and scum, and fabric damage. For
satisfactory washing results, follow these instructions.
Use ONLY powdered detergents. Do NOT use flakes scraped from a soap cake or bar, flakes, soap ribbons
(available in some markets,) detergent tablets, plastic pouches, magic laundry balls, or anything other than
powdered detergent products. Do not use soap of any kind. Do not use other types of detergent or soap
products, such as hand soap, dishwashng liquid, or any others.
4-5. TROUBLESHOOTING BY COMMON WASHING PROBLEMS
WASHING PROBLEM
Problems
Poor soil
removal
Blue Stains
Black or gray
marks on
clothes
Yellow or
brown rust
stains
Lint
Residue or
Detergent
Holes, tears,
or snags
Possible Causes
•
Insufficient detergent
•
Wash water temperature too low
•
Incorrect wash cycle
•
Laundry missorted
•
Stains not properly pretreated
•
Undiluted fabric softener
dispensed directly onto fabric
•
A buildup caused by the interaction
of fabric softener and detergent
can flake off and mark clothes
•
Not enough detergent
•
Iron or manganese in water
supply, water pipes, or water
heater
•
Incorrect sorting
•
Tissues left in pocket
•
Overloading the washer
•
Overloading the washer
•
Undissolved detergent
•
Excessive detergent
•
Incorrect use of chlorine bleach.
•
Unfastened zippers, hooks,
buckles
•
Ribs, tears and broken threads
•
Overloading the washer
•
Degradation of fabric
Solutions and Preventive Measures
•
Use correct amount of detergent for load size, amount of soil and
water hardness.
•
Use WARM or HOT water for normal soil. Different water
temperature may be required according to soil type. (refer to page 12)
•
Reduce load size.
•
Wash with heavy or soak & heavy wash cycle for heavy soiled
laundry.
•
Separate heavily soiled items from lightly soiled ones.
•
Pretreat stain and heavy soil according to directions shown on
page 17.
•
Pretreat the stain with detergent or a stain removal agent.
•
Do not overfill fabric softener dispenser and do not pour liquid fabric
softener directly onto fabric.
See page 15 for more instructions.
•
Keep the recommendations against scum (waxy buildup).
•
Use correct amount of detergent for load size, soil level,
and water Hardness.
•
To restore discolored load of whites, use rust remover safe for
fabric.
•
Install nonprecipitating water softener or an iron filter in your
water supply system for an ongoing problem.
•
Before washing, run water for a few minutes to clear lines.
•
Wash lint-producing items, like flannel sheets, towels, and the like
separately from dark fabrics and fabrics that tend to collect lint.
Remove all items, including tissues and papers, from the pockets of
items to be washed. See page 11 for sorting information.
•
Do not overload the washer
•
Do not overload the washer.
•
Some detergents need to be pre-dissolved, check the
detergent instructions. Try pre-dissolving the detergent.
•
Increase water temperature using HOT water safe for fabric.
•
Use proper amount of detergent.
•
Never pour chlorine bleach directly on fabric.
See page 13 for adding liquid bleach.
•
Fasten zippers, hooks, and buckles.
•
Remove objects in pockets. See page 9 for caring before loading.
•
Do not overload the washer.
4-6. TROUBLESHOOTING SUMMARY
40
Pin1: Rx Pin2:
Tx
Pin3: Smps2_5v Pin4: GN
D
Pin5: Standby Pin6: Smps2_13v Pin7: Boot
76.5 kΩ
50.6 kΩ
23.6 kΩ
16.6 kΩ
7.5 kΩ
5.6 kΩ
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