27LZ5RV-ZC (CHASSIS:ML-041D) - LG TV Service Manual (repair manual). Page 11

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This instruction is for the application to the LCD TV.

2.1 The adjustment is according to the order which is

designated and which must be followed, according to the
plan which can be changed only on agreeing. 

2.2  Power Adjustment : Free Voltage
2.3  Magnetic Field Condition: Nil.
2.4  Input signal Unit : Product specification standard
2.5  Reserve after operation : Above 2 hours
2.6 Adjustment equipments : Pattern Generator( MSPG925F),

DDC Adjustment Jig equipment HDCP Adjustment Jig
equipment. 

3.1 Adjustment Details

: The machine can be adjusted by itself automatically with

factory automatic equipment, in case error occurs, set
manual adjustment to standard.

3.2  Adjustment signal Composition of The Auto Adjustment

equipment

3.2.1  RS-232C Interchange

9600bps, Pin#2 : Rx, Pin#3 : Tx, 8bit, STOP bit=1, No
Parity

3.2.2  Adjust data save

* Save the adjusted data to the EEPROM with default
value

3.2.3  Adjust OK

3.2.4 Screen Adjustment Instruction Forms

CMD1  CMD2   SetID(0)   Value 
a. CMD1,CMD2 : Instructions operated by Monitor
b. SetID L 0h  Set always 0 in Adjustment
c. VALUE : Adjustment Value

3.3  PC signal Gain/Offset Adjustment  

3.3.1 Adjustment Preparation

- Execution of RF no signal during Heat Run over

30min

- Pattern generator signal is connected to the DVI-I

Jack of LCD TV.

3.3.1 Auto Gain/Offset Adjustment .

- To use Pattern Generator(MSPG-925FS), Apply

Model 37, Patten 19 XGA(1024 X 768)60Hz, Half
balck and Half white signal (Don't apply 16 gray
signal) 

- Press IN-START Key by using the Remote

Controller(SVC) , after converting to Adjustment-
Mode,  press VOL+ Key consecutively in Auto-Gain
Menu.

- After adjustment is complete, pressing enter key,

stores and completes the process.

3.4 Video signal Gain/Offset Adjustment(Auto adjustment)

- Execution of  White Pattern during Heat Run over 30min
- Connect to the LCD TV AV1 Scart input terminal with

Patten Generator(MSPG-925FS)

- Convert  INPUT MODE  to  Video&Confirm  whether  PSM

Mode  is  Standard 

- Connect RS-232C Communication Cable to the Auto

Adjustment Equipment and SET's upgrade Port  

3.4.1 Low Gray Adjustment

-  Apply Gray-Level Gray-Level (Model : 202, pattern :

59) signal by using Pattern Generator(MSPG-
925FS)

- Check weather color-coordinates (x:0.280, y : 0.280,

±0.005) is operated by using CA-110 equipment

- If color-coordinates is not in Spec, adjust color-

coordinates(x:0.280, y:0.280, ±0.005)by adjusting
Red Offset, Blue Offset 

3.4.2  White Balance Adjustment

-  Apply Gray-Level Gray-Level (Model : 202, pattern :

59) signal by using Pattern Generator(MSPG-
925FS)

- Check weather color-coordinates (x:0.283, y:0.298,

±0.005) is operated by using CA-110 equipment 

- If color-coordinates is not in Spec, adjust color-

coordinates(x:0.283, y:0.298, ±0.005)by adjusting
Red Offset, Blue Offset

- All adjustment takes color-coordinates with based on

G, changing R and B. If it is not adjusted, adjust with
fixed B, changing G and R.

3.5 Component signal Gain/Offset Adjustment(Auto adjustment)

- Execution of RF no signal during Heat Run over 30min
- Connect to the LCD TV Component1 terminal with Patten

Generator(MSPG-925FS)

- Convert INPUT MODE to Component1.& Confirm whether

PSM Mode is Standard

- Connect RS-232C Communication Cable to the Auto

Adjustment Equipment and SET's upgrade Port

3.5.1  Low Gray Adjustment

-  Apply  Gray-Level (Model : 210,  pattern : 59)signal by

using Patten Generator(MSPG925FS)

-  Check whether color-coordinates (x:0.280, y:0.280,

±0.005) is operated by using CA-110 equipment

- If color-coordinates is not in Spec, adjust color-

coordinates(x:0.280, y : 0.280, ±0.005) by adjusting Red
Offset, Blue Offset

3.5.2  White Balance Adjustment 

-  Apply full White (Model : 210, pattern : 47) signal by

using Patten Generator(MSPG925FS)

- Check whether color-coordinates (x:0.280, y:0.280,

±0.005) is operated by using CA-110 equipment

-  If color-coordinates is not in Spec, adjust color-

coordinates (x:0.283, y:0.298, ±0.005)by adjusting Red
Gain, Blue Gain

- All adjustment takes color-coordinates with based on R,

changing G and B If it is not adjusted, adjust with fixed
G, changing R and R.

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