LG M237WD Service Manual page 14

5. Adjustment Command
5.1 Adjustment Commands(LEMGTH=84)
No. Adjustment Contents CMD ADR
1 FACTORY ON
2 FACTORY OFF
3 EEPROM ALL INIT.
4 EEPROM Read
5 EEPROM Write
COLOR SAVE (R/G/B cutoff)
6
Drive, Contrast, Bright)
7
H POSITION
8 V POSITION
9 CLOCK
10 PHASE
11 R DRIVE
12 G DRIVE
B
13 DRIVE
14 R CUTOFF
15 G CUTOFF
16 B CUTOFF
17 BRIGHT
19 CONTRAST
20 AUTO_COLOR_ ADJU ST
21 CHANGE_COLOR_TEMP
22 FACTORY_DEFAULT
AUTO_INPUTCHANGE
23
5.2 EEPROM DATA READ
5.2.1 Signal Table
START 6E A 50 A 84 A
START 6F A D1 A ----------------------------------------------------------------------
5.2.2 Command Set
No. contents CMD A DH
Adjustment
1 EEPROM READ E7
2
3
4
5
6
7
8
*use: To read the appointment Address of E
Copyright 2009 LG Electronics. Inc. All right reserved.
C
Only for training and service purposes
VAL Description
Factory mode on
E0 00 00
E2 00 00 Factory mode off
E4 00 00 EEPROM All c lear
E7 00 00 EEPROM Read
E8 00 Data EEPROM Write by so me values
00 00 Save
EB Color
20 00 00~100
They have different range
30 00 00~100
mode, FOS Adjustment
00~100
90 00
92 00 00~100
16 00 00~FF
Drive adjustment
18 00 00~FF
1A 00 00~FF
80 00 00~7F
Offset adjustment
82 00 00~7F
84 00 00~7F
10 00 00~3F
Bright adjustment
Luminance adjustment
12 00 00~64
F1 00 02 Auto COLOR Adjustment
0: COOL
1: NORMAL
F2 00 0,1,2,3
2: WARM
3: USER
Factory mode off
F3 00 00
& II_SW is
& Input change to TV
0 : TV
1 : AV1
2 : AV2
3 : Component
F4 00 0,1,2,4
4 : RGB
5 : DVI
6 : HDMI
03 A CMD A ADH A ADL A
128 Bytes
ADL Details
A0 0 0-Page 0~7F Read
80 0-Page 80~FF Read
A2 0 1-Page 0~7F Read
80 1-Page 80~FF Read
A4 0 2-Page 0~7F Read
80 2-Page 80~FF Read
A6 0 3-Page 0~7F Read
80 3-Page 80~FF Read
5.3 E 2 PROM Data Write
5.3.1 Signal Table
START 6E
Data_1
LEN : 84h + Byte
CMD : 8Eh
ADH : E 2 PROM Slave Address (A0, A2, A4, A8), Not 00h
ADL : E 2 PROM Sub Address ( 00~ FF)
Data : Write data
5.3.2 Command Set
No. Adjustment contents
1 EEPROM WRITE
2
- use
• EDID write : 16-byte by 16-byte, 8 order (128-byte)
write(TO "00 – 7F" of "EEPROM Page A4")
• FOS
(HFh,HFl,VF,STD,HP,VP,Clk,ClkPh,PhFine) write
• Random Data write : write the appointment Address of
E2PROM
5.4 VRAM Read
• Send CMD(70h) to read Video RAM value from MICOM
And save its value to 128-Bytes Buffer(Common Buffer
for the use of EDID)
START 6E
• Delay 500ms ( Time to Wait and Read Video RAM from
1
MICOM)
• Be transmitted the contents of MICOM's 128-bytes
Buffer to PC.
(128th Data is the CheckSum of 127-bytes data : That's
OK if the value of adding 128-bytes Data is Zero)
START
STOP
CS A
Dn A STOP
- 14 -
A 50 A 84+n A 03
A . . . Data_n
(Reserved by Buffer to E 2 PROM )
CMD(hex)
E8
Default write
A 50 A 84 A 03 A 70
6F A Data1 . . . Data128
A CMD A ADH A ADL A
A CS A STOP
LEN Details
94 16-Byte Write
84+n n-byte Write
: 16-mode data
A 00 A 00 A CS A
STOP
A CS NA
STOP
LGE Internal Use Only