41549 - LG Washing Machine Service Manual (repair manual). Page 19

Read LG 41549 Service Manual online

7. TEST MODE
20
7-1. SAFETY CAUTION
There's built-in AC 110V and DC power in output terminal of PWB assembly in common. Be careful electric
shock when disconnecting parts while trouble shooting. (Wear Electro Static Discharge gloves when working.)
After cutting off the power when changing PWB assembly, disconnect or assemble.
Be careful static when handling PWB assembly, and use Electro Static Discharge plastic pack when delivering
or keeping it. 
7-2. LOAD TEST MODE.
The washer must be empty and the controls must be in the off state. 
1. Press the SPIN SPEED and SOIL LEVEL buttons simultaneously.
2. Press the POWER       button, while the above condition. Then buzzer will sound twice.
3. Press the START/PAUSE      button repeatedly to cycle through the test modes.
7-3. HOW TO CHECK THE WATER LEVEL FREQUENCY
Press the WASH TEMP and DELAY START button simultaneously.
The digits indicate the water level frequency ( x.1 kHz ).
So, for example a display indicating 241: a Water level frequency of 241 x.1 kHz
=  24.1 kHz
Number of times the
Start/Pause button is pressed
Check Point
Display Status
NOTES:
RPM < 220 : RPM = display / RPM > 200 : RPM = display X 10
WATER LEVEL : o255 = empty / o248 = normal / o255 = tub clean
None
1 time 
2 times 
3 times 
4 times 
5 times 
6 times 
7 times 
8 times 
9 times 
10 times 
11 times 
12 times 
13 times 
14 times
Turns on all lamps.
Tumble clockwise.
Low speed Spin.
High speed Spin.
Inlet valve for prewash turns on.
Inlet valve for main wash turns on.
Inlet valve for Hot water turns on.
Inlet valve for bleach turns on.
Inlet valve for steam turns on.
Tumble counterclockwise.
Heater turns on for 3 seconds.
Circulation pump turns on.
Drain pump turns on.
Steam water level sensor operates.
Steam Heater turns on for 1.2 sec.
LOAD TEST MODE
rpm (42~50)
rpm (55~65)
rpm (110~117)
Water level frequency (0~255)
Water level frequency (0~255)
Water level frequency (0~255)
Water level frequency (0~255)
Water level frequency (0~255)
rpm (42~50)
Water temperature
Water level frequency (0~255)
Water level frequency (0~255)
Steam generator temperature (0~255)
AG tub water level frequency (0~255)
Number of times the
Start/Pause button is pressed
Check Point
Display Status
f
of
15 times
Page of 59
Display

Click on the first or last page to see other 41549 service manuals if exist.