DOWNLOAD LG 32LV2500-UG (CHASSIS:LA01M) Service Manual ↓ Size: 10.34 MB | Pages: 51 in PDF or view online for FREE

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This spec. sheet applies to LA01M Chassis applied LCD TV
all models manufactured in TV factory. 

2.1   Because this is not a hot chassis, it is not necessary

to use an isolation transformer. However, the use of
isolation transformer will help protect test instrument.  

2.2   Adjustment must be done in the correct order.  
2.3  The adjustment must be performed in the

circumstance of  25±5°C of temperature and 65±10%
of relative humidity   

2.4   The input voltage of the receiver must keep

100~240V~, 50/60Hz.  

2.5 At first Worker must turn on the SET by using Power

Only key.  

2.6    The receiver must be operated for about 5 minutes

prior to the adjustment when module is in the
circumstance of over 15. 

• Caution 
When a still image is displayed for 20 minutes or longer
(especially where W/B scale is strong.  Digital pattern 13ch
and/or Cross hatch pattern 09ch), there can some
afterimage in the black level area. 

(1) ADC adjustment: Component 480i, 1080p / RGB-PC

1080p 

(2) EDID download: HDMI and RGB-PC   

• Remark 

- Above adjustment items can be also performed in Final

Assembly if needed. Adjustment items in both PCBA and
final assembly stages can be checked by using the
INSTART Menu  1.ADJUST CHECK. 

(1) White Balance adjustment 
(2) RS-232C functionality check 
(3) Factory Option setting per destination 
(4) Shipment mode setting (IN-STOP) 
(5) GND and HI-POT test 

(1) Shipment conditions 
(2) Tool option menu 
(3) USB Download (S/W Update, Option and Service only) 
(4) Preset CH Information 

4.1.1. Overview 
• ADC adjustment is needed to find the optimum black level

and gain in Analog-to-Digital device and to compensate RGB
deviation. 

4.1.2. Equipment & Condition 
(1) Protocol: RS-232C 
(2) Inner Pattern 
- Resolution : 1080p(Comp) / 1024*768(RGB)  
- Pattern : Horizontal 100% Color Bar Pattern 
- Pattern level : 0.7±0.1 Vp-p 

4.1.3. Adjustment 

4.1.3.1 Adjustment method  
• Connect to Jig by using RS-232, adjust Component and

RGB 

*Manual adj (If needed in Final Assembly) 
- Required equipment : Adjustment R/C 
- Enter Service Mode by pushing “ADJ” key, 

G

’ key at [6. ADC

Calibration] 

4.1.3.2 Adj. protocol  

Protocol 

CMD 1  CMD 2 Data 1 Data 2

Remark 

Enter adj mode 

a 

a 

00 

00  When transfer  the   Mode In,Carry the command. 

Start ADC adj 

a 

d 

00 

10 

Automatically adjustment (Use internal pattern) 

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4.2.1 Overview   
• It is a VESA regulation. A PC or a MNT will display an

optimal resolution through information sharing without any
necessity of user input. It is a realization of “Plug and Play”.   

4.2.2 Equipment  
• Since embedded EDID data is used, EDID download JIG,

HDMI cable and D-sub cable are not need. 

•  Adjust by using remote controller. 

4.2.3. Download method    
1) Press Adj. key on the Adj. R/C, 
2) Select EDID D/L menu. 
3) By pressing Enter key, EDID download will begin 
4) If Download is successful, OK is display, but If Download is

failure, NG is displayed. 

5) If Download is failure, Re-try downloads.    

* Caution) When EDID Download, must remove RGB/HDMI

Cable. 

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4.2.4.1.1.2 8BIT 

4.2.4.1.2. HD Model 

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4.2.4.2. Korea (AC3)     
4.2.4.2.1. FHD Model 
4.2.4.2.1.1. 10BIT