LG 27UD59, Service Manual

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Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Power LED Off
Automatic Standby
Off(EU/EK/PD/EW/MA,4H)
DP 1.2 Enable
OSD Lock Off
Reset /
TRANSPARENCY
Operating. Time Within 2Hours
6. Signal composition for adjustment
6.1 I2C (100K BPS)
6.2 COMMUNICATION START
START 6E A STOP 50Ms
#Until ACK BIT goes LOW, Repeat it.
6.3 Command form.
Command form use DDC2AB standard communication protocol.
START 6E A 50 A LEN A 03 A CMD A 00 A VAL A CS A STOP
a. LEN : DATA BYTE number to send.
b. CMD : Command language that monitor executes.
c. VAL : FOS DATA
d. CS : Dada’s CHECHSUM that transmit
e. DELAY : 50MS
f. A : Acknowledge
6.4 Screen adjust command (LENGTH = 84)
No. Adjustment contents CMD(hex
)
ADR VAL(hex) Explanation
1 EEPROM ALL INITIAL E4 00 00 adjustment Initialization
2 EEPROM READ E7 Slave
add
At EEPROM Read
3 EEPROM WRITE E8 Slave
add
Data Write data at EEPROM
4 R GAIN 16 00 00-64
Tune Gain
5 G GAIN 18 00 00-64
6 B GAIN 1A 00 00-64
7 BRIGHT(Backlight) 10 00 00-64 Tune Analog Bright
8 FACTORY RESET F0 00 00 Factory reset
9
AUTO_COLOR_ADJUST F1 00 0
AUTO COLOR Tuning
0:Auto color
10
COLOR_MODE_CHANG
E
F2 00
01 6500K