42PG1000-ZA (CHASSIS:PD83A) - LG TV Service Manual (repair manual). Page 10

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9-4. Connection Picture of the Measuring
Instrument(On Automatic control)
(1) Inside PATTERN is used when W/B is controlled. Connect
to auto controller or push control R/C IN-START -> Enter
the mode of White-Balance, the pattern will come out.
9-5. Auto-control interface and directions
(1) Adjust in the place where the influx of light like floodlight
around is blocked.(illumination is less than 10ux)
(2) Measure and adjust after sticking the Color Analyzer(CA-
100+, CA210) to the side of the module.
(3) Aging time 
- After aging start, keep the power on(no suspension of
power supply) and heat-run over 15minutes.
- keep white pattern using inside pattern.
Auto adjustment Map(I2C)
- I2C(100K BPS)
10. Communication START
* Until ACK BIT goes LOW, Repeat it.
11. Command form
Command form use DDC2AB standard communication
protocol.
1. LEN : DATA BYTE number to send.
2. CMD : Command language that monitor executes.
3. VAL : FOS DATA
4. CS : Dada’s CHECKSUM that transmit.
5. DELAY : 50MS
6. A : Acknowledge.
12. EEPROM DATA READ
12-1. Single TABLE
12-2. Command Set
* To read the appointment Address of E
2
PROM by 128(80h)-
byte
13. EEPROM Data Write(Serial No D/L)
13-1. Signal TABLE
CMD
: 8Eh 
LENGTH : 84h+bytes
ADH
: E
2
PROM Slave Address(A0,A2,A4,A6,A8)
Not 00h(Reserved by Buffer To EEPROM)
ADL
: E
2
PROM Sub Address low  (00~FF)
Data
: Write data
CS
: CMD + LENGTH + ADH + ADL + Data_1 + ... + Data_n
13-2. Command Set
* Description
FOS Default write : <7mode data> write
Vtotal, V_Frequency, Sync_Polarity, Htotal, Hstart, Vstart, 0, Phase
Data write : Model Name and Serial Number write in EEPROM,.
13-3. Method & Notice
(1) Serial number D/L is using of scan equipment.
(2) Setting of scan equipment operated by Manufacturing
Technology Group.
(3) Serial number D/L must be conformed when it is produced
in production line, because serial number D/L is mandatory
by D-book 4.0.
- 10 -
(Fig.6) Auto AV(CVBS) Color Balance Test Pattern
Full White Pattern
RS-232C Communication
CA-210
Color
ANALYZER
TYPE : CA-210
Delay 100ms
128Bytes
START 6E A 50 A LEN A 03 A CMD A 00 A VAL A CS A STOP
START
6E
A
STOP
50Ms
E7
A0
A2
A4
A6
0
80
0
80
0
80
0
80
0-page
0~7F
Read
0-page
80~7F Read
1-page
0~7F
Read
1-page
80~7F Read
2-page
0~7F
Read
2-page
80~7F Read
3-page
0~7F
Read
3-page
80~7F Read
EEPROM READ
1
2
3
4
5
6
7
8
No.
Adjustment
contents
CMD
(hex)
ADH
(hex)
ADL
(hex)
Details
CMD LENGTH ADH ADL DATA_1
DATA_n
...
CS
DELAY
No
1
2
EEPROM WRITE
E8
94
84+n
16-Byte Write
n-Byte Write
Adjust mode
CMD(hex) LENGTH(hex)
Description
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