Adjustment Instruction - LG M1994A-PTJ Service Manual

1. Application
This document is applied to 19" LCD Monitor TV (for Brazil)
which is manufactured in TV (or Monitor) Factory or is
produced on the basis of this data.
2. Designation
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 30 Minutes
2.6. Adjustment equipments: Color Analyzer (CA-210 or CA-
110), Pattern Generator (MSPG-925L or Equivalent),
DDC Adjustment Jig equipment, SVC remote controller
* When TN300 is connected, TV function is available.
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 LG Electronics. Inc. All right reserved.
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
"If a scaler IC changed for PCB repairing, it is need to do
ADC process at all times."
3.1.1 PC input ADC
3.1.1.1 Auto RGB Gain/Offset Adjustment
• Convert to PC in Input-source
• Signal equipment displays
Output Voltage : 700 mVp-p
Impress Resolution XGA (1024 x 768 @ 60Hz)
Model: 60
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 "0x8B, 0x8C" address of EEPROM
"0xB4" is "0xAA" or not.
• If "0x8B, 0x8C" address of EEPROM "0xB4" isn't
"0xAA", we adjust once more
• We can confirm the ADC values from "0x00~0x05"
addresses in a page "0xB4"
*Manual ADC process using Service Remocon. After enter
Service Mode by pushing "INSTART" key,
execute "Auto-RGB" by pushing "
- 14 -
(7) ..........OK
(5)
in Pattern Generator
Adjustment pattern (PC )
" key at "Auto-RGB".
LGE Internal Use Only