Adjustment Instruction - LG M237WD Service Manual

1. Application
1) This spec sheet is applied all of the LCD TV with LD84J
chassis.
2)Not included spec and each product spec in this spec sheet
apply correspondingly to the following each country standard
and requirement of Buyer
2. Designation
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) Power Adjustment: Free Voltage
3) Magnetic Field Condition: Nil.
4) Input signal Unit: Product Specification Standard
5) Reserve after operation: Above 30 Minutes
6) Adjustment equipments: Color Analyzer( CA- 210 or CA-
110), Pattern Generator ( MSPG- 925L or Equivalent ), DDC
Adjustment Jig equipment, SVC remote controller
3. Main PCB check process
# APC - After Manual-Insult, executing APC
# Download
1. Execute ISP program "Mstar ISP Utility" and then click
"Config" tab.
2. Set as below, and then click "Auto Detect" and check "OK"
message.
If display "Error", Check connect computer, jig, and set.
3. Click "Connect" tab.
If display "Can't ", Check connect computer, jig, and set.
(2) OK
4. Click "Read" tab, and then load download file(XXXX.bin)
by clicking "Read"
(4)
filexxx.bin
Copyright 2009 LG Electronics. Inc. All right reserved.
C
Only for training and service purposes

ADJUSTMENT INSTRUCTION

(1) (3)
5. Click "Auto" tab and set as below
6. Click "Run".
7. After downloading, check "OK" message.
(6)
filexxx.bin
3.1 ADC Process
3.1.1 PC input ADC
3.1.1.1 Auto RGB Gain/Offset Adjustment
• Convert to PC in Input-source
I2C COMMAND: 0xF4(SELECT_INPUT)0x00 0x60 (RGB)
cf. 0x10(TV),0x20(AV),0x40(COMPONENT),0x60(RGB),
0x90(HDMI)
• Signal equipment displays
Output Voltage : 700 mVp-p
Impress Resolution XGA (1024 x 768 @ 60Hz)
Model: 60 in Pattern Generator
Pattern: 29 in Pattern Generator (MSPG-925 SERISE)
[gray pattern that left & right is black and center is white
signal (Refer below picture)].
• Adjust by commanding AUTO_COLOR_ADJUST(0xF1)
0x00 0x02 instruction.
3.1.1.2 Confirmation
• We confirm whether "0xB6(RGB)" address of EEPROM
"0xA2" is "0xAA"or not.
• If "0xB6(RGB)" address of EEPROM "0xB2" isn't "0xAA",
we adjust once more
• We can confirm the ADC values from "0xB0~ 0xB5(RGB)"
addresses in a page "0xA2"
*Manual ADC process using Service Remocon. After enter
Service Mode by pushing "INSTART" key, execute "Auto-
RGB" by pushing "
- 12 -
(7) .OK
(5)
Adjustment pattern (PC )
" key at "Auto-RGB".
LGE Internal Use Only