LG 19LS4R (CHASSIS:LP69C) Service Manual ▷ View online
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5. Adjustment Command
5.1. Adjustment Commands(LENGTH=84)
5.2 EEPROM DATA READ
(1) Signal Table
(2) Command Set
* Purpose : To read the appointment Address of E2PROM by
128(80h)-byte
5.3. E2PROM Data Write
(1) Signal Table
LEN : 84h+Bytes
CMD : 8Eh
ADH : E
CMD : 8Eh
ADH : E
2
PROM Slave Address(A0,A2,A4,A6,A8), Not
00h(Reserved by BufferToEEPROM)
ADL : E
2
PROM Sub Address(00~FF)
Data : Write data
(2) Command Set
* Purpose
1) EDID write : 16-byte by 16-byte, 8 order (128-byte)
write(TO “00 – 7F” of “EEPROM Page A4”).
2) FOS Default write : 16-mode data (HFh, HFl, VF, STD,
HP, VP, Clk, ClkPh, PhFine) write.
3) Random Data write : write the appointment Address of
E2PROM.
5.4. VRAM Read
1) 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)
the use of EDID)
2) Delay 500ms. (Time to Wait and Read Video RAM from
MICOM)
3) 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)
That’s OK if the value of adding 128-bytes Data is Zero)
FACTORY ON
E0
00
00
Factory mode on
FACTORY OFF
E2
00
00
Factory mode off
EEPROM ALL INIT.
E4
00
00
EEPROM All clear
EEPROM Read
E7
00
00
EEPROM Read
EEPROM Write
E8
00
data
EEPROM Write by some
values
COLOR SAVE
(R/G/B cutoff, Drive,
EB
00
00
Color Save
Contrast, Bright)
H POSITION
20
00
00 – 100 They have different range
V POSITION
30
00
00 – 100 each mode, FOS Adjustment
CLOCK
90
00
00 – 100
PHASE
92
00
00 – 100
R DRIVE
16
00
00 – FF
Drive adjustment
G DRIVE
18
00
00 – FF
B DRIVE
1A
00
00 – FF
R CUTOFF
80
00
00 – 7F
Offset adjustment
G CUTOFF
82
00
00 – 7F
B CUTOFF
84
00
00 – 7F
BRIGHT
10
00
00 – 3F
Bright adjustment
CONTRAST
12
00
00 - 64
Luminance adjustment
AUTO_COLOR_
F1
00
02
Auto COLOR Adjustment
ADJUST
CHANGE_COLOR
F2
00
0,1,2,3
0: COOL
_TEMP
1: NORMAL
2: WARM
3: USER
FACTORY_DEFAULT
F3
00
00
Factory mode off
& II_SW is “1”
& Input change to “ TV”
AUTO_INPUT
F4
00
0,1,2,4
0 : TV
CHANGE
1 : AV1
2 : AV2
3 : Component
4 : RGB
5 : DVI
ADR
VAL
Description
CMD
(hex)
(hex)
Adjustment Contents
128 Bytes
Delay 100ms
Data 128
EEPROM READ
E7
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
Adjustment contents CMD(hex) ADH(hex) ADL(hex)
Details
EEPROM WRITE
E8
94
16-Byte Write
84+n
n-byte Write
Adjustment contents
CMD(hex)
ADH(hex)
Details
TROUBLE SHOOTING
1. No Power (LED indicator off) : [A] Process
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Check 15V or
ST_5V of Power B/D.
Fail
Pass
Check short of Main B/D
or Change Power B/D.
Check Output of
IC1100, IC1101.
Fail
Check short of
IC100, Q307.
Pass
Pass
Fail
Re-soldering or Change
defect part of IC100, Q307.
defect part of IC100, Q307.
Change IC1100, IC1101.
Pass
Change IC1102, IC1103.
Check Output of
IC1102.
Fail
Check short of
Q307, TU600, IC500.
Fail
Re-soldering or Change
defect part of Q307,
TU600, IC500.
defect part of Q307,
TU600, IC500.
Pass
Pass
Change IC1104, IC1105.
Change LED Assy.
Check Output of
IC1104, IC1105.
Pass
Check LED Assy.
Pass
Check P304 Connector.
Fail
Check short of
IC100, IC400.
Fail
Fail
Re-soldering or Change
defect part of IC100, IC400.
defect part of IC100, IC400.
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2. No RASTER : [B] Process
Check LED status
On Display Unit.
Fail
Pass
Repeat A PROCESS.
Check Panel Link
Cable or Module.
Pass
Fail
Change Panel Link Cable or Module.
Check Inverter
Connector or
inverter.
Fail
Change Inverter Connector or Inverter.
Pass
Change IC100
Check Output of
L300
Pass
Check the LVDS
Output of IC100
Pass
Check Input source Cable and Jack.
Fail
Change Module.
Fail
Fail
Change L300.
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3. No RASTER on PC Signal
Repeat [A, B]
process.
Pass
Check the input/
output of R735,
R736.
Fail
Check the J701.
Pass
Re-soldering or change the
defect part, Check the X100.
defect part, Check the X100.
Check
the input/output
of R128, R131,
R136.
Pass
Check the
input/output of IC100.
Pass
Check input source cable and jack.
Fail
Fail
Re-soldering or Change
the defect part.
the defect part.
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