55LM660S, 55LM660T (CHASSIS:LD22E) — LG TV Service Manual (repair manual). Page 16

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4.6. 3D function test
(Pattern Generator MSHG-600, MSPG-6100[Support HDMI1.4])
* HDMI mode NO. 872 , pattern No.83
(1)  Please input 3D test pattern like below.
(2) When 3D OSD appear automatically, then select OK key.
(3) Don't wear a 3D Glasses, check the picture like below.
4.7. Wi-Fi Test
Step 1) Turn on TV
Step 2) Select Network Connection option in Network Menu.
Step 3) Select Start Connection button in Network Connection.
Step 4)  If the system finds any AP like blow PIC, it is working 
well.
4.8. LNB voltage and 22KHz tone check
(only for DVB-S/S2 model)
▪ Test method
(1) Set TV in Adj. mode using POWER ON.
(2) Connect cable between satellite ANT and test JIG.
(3)  Press Yellow key(ETC+SWAP) in Adj Remote control to 
make LNB on.
(4) Check LED light ‘ON’ at 18 V menu.
(5) Check LED light ‘ON’ at 22 KHz tone menu.
(6)  Press Blue key(ETC+PIP INPUT) in Adj Remote control 
to make LNB off.
(7) Check LED light ‘OFF’ at 18 V menu.
(8) Check LED light ‘OFF’ at 22 KHz tone menu.
▪ Test result
(1)  After  press  LNB  On  key,  ‘18  V  LED’  and  ‘22  KHz  tone 
LED’ should be ON. 
(2)  After press LNB OFF key, ‘18 V LED’ and ‘22 KHz tone 
LED’ should be OFF. 
4.9. Option selection per country
4.9.1. Overview
-  Option selection is only done for models in Non-EU 
4.9.2. Method
(1)  Press ADJ key on the Adj. R/C, then select Country Group 
Meun
(2)  Depending on destination, select Country Group Code 04 
or  Country  Group  EU  then  on  the  lower  Country  option, 
select  US,  CA,  MX.  Selection  is  done  using  +,  -  or  ►◄ 
key.
4.10. Tool Option selection
▪  Method : Press "ADJ" key on the Adjustment remote control, 
then select Tool option.
4.11. Ship-out mode check(In-stop)
▪  After final inspection, press "IN-STOP" key of the Adjustment 
remote control and check that the unit goes to Stand-by mode.
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4.12.1. Method
-  Check that Power cord is fully inserted to the SET.
  (If loose, re-insert)
-  Unit  fully  inserted  Power  cord, Antenna  cable  and A/V 
arrive to the auto-check process. 
- Connect D-terminal to AV JACK TESTER
- Auto CONTROLLER(GWS103-4) ON
- Perform GND TEST
- If NG, Buzzer will sound to inform the operator.
- If OK, changeover to I/P check automatically.
(Remove CORD, A/V form AV JACK BOX.)
- Perform I/P test
- If NG, Buzzer will sound to inform the operator.
-  If OK, Good lamp will lit up and the stopper will allow the 
pallet to move on to next process.
4.12.2. Checkpoint
▪ TEST voltage
- GND: 1.5 KV / min at 100 mA
- SIGNAL: 3 KV / min at 100 mA
▪ TEST time: 1 second
▪ TEST POINT
-  GND  TEST  =  POWER  CORD  GND  &  SIGNAL  CABLE 
METAL GND
NEUTRAL
▪ LEAKAGE CURRENT: At 0.5 mArms
5. Audio
Measurement condition:
(1) RF input: Mono, 1 KHz sine wave signal, 100 % Modulation
(2) CVBS, Component: 1 KHz sine wave signal 0.5 Vrms
(3) RGB PC: 1 KHz sine wave signal 0.7 Vrms
6. USB S/W Download(Service only)
(1) Put the USB Stick to the USB socket.
(2) Automatically detecting update file in USB Stick.
-  If your downloaded program version in USB Stick is Low, 
it didn't work. But your downloaded version is High, USB 
data is automatically detecting.
  (Download  Version  High  &  Power  only  mode,  Set  is 
automatically Download)
(3) Show the message "Copying files from memory".
(4) Updating is starting.
(5) Updating Completed, The TV will restart automatically.
(6)  If  your TV  is  turned  on,  check  your  updated  version  and 
Tool option. (explain the Tool option, next stage)
*  If downloading version is more high than your TV have, TV 
can lost all channel data. In this case, you have to channel 
recover. if all channel data is cleared, you didn’t have a DTV/
ATV test on production line.
* After downloading, have to adjust Tool Option again.
(1) Push "IN-START" key in service remote control.
(2) Select "Tool Option 1" and push "OK" key.
(3) Punch in the number. (Each model has their number)
No.
Item
Min
Typ Max
Unit
Remark
1.
Audio practical 
max Output, L/R
(Distortion=10% 
max Output)
9
10
12
W
EQ Off
AVL Off
Clear Voice Off
8.10 10.8 Vrms
2.
Speaker (8Ω
Impedance)
9
10
12
W
EQ Off
AVL Off
Clear Voice Off
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■ Screw specification and application situation
<Warning>
Check Screw Type When Screw is assembled at 'A' Part. If 'C' Screw is used at the 'A' 
part, Module will get damaged.
SCREW ASSEMBLY WORKING GUIDE 
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FAB30013202
(M3*L8, White, Taptite)
4EA
ח ͷͲͳͤͧͣͣ͑͢͢͡͡
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- 19 -
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BLOCK DIAGRAM
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A22
A2
A21
A5
A10
AG1
900
300
200
400
540
521
530
800
810
710
700
910
560
410
570
120
510
501
500
310
* Set + Stand * Stand Base + Body
LV1
LV2
AG2
122
Clip 
Type
(Option)
EXPLODED VIEW
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These 
parts are identified by       in the Schematic Diagram and EXPLODED VIEW. 
It  is  essential  that  these  special  safety  parts  should  be  replaced  with  the  same  components  as 
recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards. 
Do not modify the original design without permission of manufacturer.
IMPORTANT SAFETY NOTICE

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