42LV3700-UD (CHASSIS:LA12B) - LG TV Service Manual (repair manual). Page 18

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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 

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 controller. 
2. Select "Tool Option 1" and Push “OK” button. 
3. Punch in the number. (Each model has their number.) 

10.1.1. Adj. condition and cautionary items 
(1) Lighting condition in surrounding area surrounding lighting

should be lower 10 lux.  Try to isolate adj. area into dark
surrounding. 

(2) Probe location: Color Analyzer (CA-210) probe should be

within 10cm and perpendicular of the module surface
(80°~ 100°) 

(3) Aging time 
1) After Aging Start, Keep the Power ON status during 5

Minutes. 

2) In case of LCD, Back-light on should be checked using no

signal or Full-white pattern. 

10.1.2. Equipment 
(1) Color Analyzer: CA-210 (NCG: CH 9 / WCG: CH12 / LED:

CH14) 

(2) Adj. Computer (During auto adj., RS-232C protocol is

needed) 

(3) Adjust Remocon 
(4) Video Signal Generator MSPG-925F 720p/216-Gray

(Model: 217, Pattern: 78)  

10.1.3. Adjustment    
(1) Set TV in Adj. mode using POWER ON 
(2) Zero Calibrate the probe of Color Analyzer, then place it on

the center of LCD module within 10cm of the surface. 

(3) Press ADJ key -> EZ adjust using adj. R/C -> 6. White-

Balance then press the cursor to the right (KEY

G

).  When

KEY(

G

) is pressed 216 Gray internal pattern will be

displayed. 

(4) One of R Gain / G Gain / B Gain should be fixed at 192,

and the rest will be lowered to meet the desired value. 

(5) Adj. is performed in COOL, MEDIUM, WARM 3 modes of

color temperature. 

• If internal pattern is not available, use RF input. In EZ Adj.

menu 6.White Balance, you can select one of 2 Test-pattern:
ON, OFF. Default is inner(ON). By selecting OFF, you can
adjust using RF signal in 216 Gray pattern.