LG 42PC51-ZB (CHASSIS:PP78A) Service Manual ▷ View online
11. EDID
(The Extended Display Identification Data )
/DDC
(Display Data Channel)
download
11-1. Profile
: To be possible for plug and play.
11-2. Required Test Equipment
(1) Adjusting PC with S/W for writing EDID Data.
(S/W : EDID TESTER Ver.2.5)
(2) A Jig for EDID Download.
(3) Cable : Serial(9Pin or USB) to D-sub 15Pin cable, D-sub
(3) Cable : Serial(9Pin or USB) to D-sub 15Pin cable, D-sub
15Pin cable, DVI to HDMI cable.
11-3. Connection structure
* Caution
- Never connect HDMI & D-SUB Cable at the same time.
- Use the proper cables below for EDID Writing.
- Use the proper cables below for EDID Writing.
11-4. Preparation for Adjustment
(1) As above (Fig. 2), Connect the Set, EDID Download Jig,
PC & Cable.
(2) Turn on the PC & EDID Download Jig. And Execute the
S/W : EDID TESTER Ver 2.5.
(3) Set up S/W option.
Repeat Number : 5
Device Address : A0
PageByte : 8
Device Address : A0
PageByte : 8
(4) Power on the Set.
11-5. Sequence of Adjustment
(1) DDC data of Analog-RGB
1) Init the data.
2) Load the EDID data.(Open File).
[ Analog-RGB : PP78A_RGB.ANA ]
[ Digital-HDMI1 : PP78A_HDMI1.DVI ]
[ Digital-HDMI2 : PP78A_HDMI2.DVI ]
[ Digital-HDMI1 : PP78A_HDMI1.DVI ]
[ Digital-HDMI2 : PP78A_HDMI2.DVI ]
3) Set the S/W as below.
(4) Push the “Write Data & Verify”button. And confirm “Yes”.
(5) If the writing is finished, you will see the “OK” message.
- 13 -
For RGB EDID
For HDMI EDID
(Fig. 2) Connection Diagram of DDC download
Open File
Open File
- 14 -
11-6. EDID Data
(1) XGA
<Analog (RGB) >
< Digital1 (HDMI/DVI1) >
< Digital2 (HDMI/DVI2) >
(2) VGA
<Analog (RGB) >
< Digital1 (HDMI/DVI1) >
< Digital2 (HDMI/DVI2) >
=> Detail EDID Options are below([1],[2],[3],[4],[5])
1. [1]-Product ID
2. [2]-Serial No : Controlled on production line
3. [3]-Month, Year : Controlled on production line
3. [3]-Month, Year : Controlled on production line
ex) Monthly: '03' => '03'
Year: '2005' => '0F'
4. [4]-Model Name : model name -> LG TV
- LG TV
5. [5]-Checksum (7EH) -> Changeable by total EDID data.
1
2
3
4
4
5
1
2
4
4
3
5
1
2
3
4
4
5
5
5
1
2
3
4
4
5
10
10
5
1
2
3
4
4
5
5
1
2
3
4
4
5
5
20
20
Model
Name
42PC5R
42PC51
42PC5RV
42PC7RV
DEC
40079 (A)
40080 (D)
40119 (A)
40120 (D)
40121 (A)
40122 (D)
Product ID
HEX
9C8F
9C90
9CB7
9CB8
9CB9
9CBA
EDID table
8F9C
909C
B79C
B89C
B99C
BA9C
- 15 -
12. Adjustment of White Balance
12-1. Purpose and Principle for adjustment
of the color temperature
(1) Purpose : Adjust the color temperature to reduce the
deviation of the module color temperature.
(2) Principle : To adjust the white balance without the
saturation, Fix the one of R/G/B gain to 80 and decrease
the others.
the others.
12-2.Adjustment mode
: Two modes of Cool and Warm.(Medium data is
automatically calibrated by the cool data)
12-3. Required Equipment
(1) Remote control for adjustment.
(2) Color Analyzer.(CA-110 or same product) - CH : 10
(3) Auto W/B adjustment instrument.(only for Auto adjustment)
(2) Color Analyzer.(CA-110 or same product) - CH : 10
(3) Auto W/B adjustment instrument.(only for Auto adjustment)
12-4. Connecting diagram of equipment for
measuring
(For Automatic Adjustment)
(1) Enter the DDC adjust mode.
- Enter the white balance adjustment mode at the same
time heat-run mode when pushing the power on by power
only key.
only key.
- Maintain the white balance adjustment mode with same
condition of Heat-run.
-> Maintain after AC off/on in status of Heat-run pattern display.
(2) Release the DDC adjust mode.
- Release the adjust mode after AC off/on or std-by off/on
in status of finishing the Hear-run mode.
- Release the Adjust mode when receiving the aging off
command(F3 00 00) from adjustment equipment.
- Need to transmit the aging off command to TV set after
finishing the adjustment.
* Standard color coordinate and temperature when using the
CA-110 or CA210 equipment.
* Synchronization relation between PSM and CSM.
(3) DDC adjustment support command set.
* R/G/B GAIN max value : 80
12-5. Adjustment of White Balance
(For Manual adjustment)
- Adjustment mode : Two modes of Cool (Dynamic) and
Warm(Mild).
(Medium data is automatically calibrated by the cool data)
(Medium data is automatically calibrated by the cool data)
- Color analyzer(CA110, CA210) should be used in the
calibrated ch by CS-1000.(PDP : CH10)
- Operate the zero-calibration of the CA-110 or CA-210, then
stick sensor to the module when adjusting.
- For manual adjustment, it is also possible by the following
sequence.
(1) Select RF no signal by pressing “POWER ON” key on
remote control for adjustment then operate heat run more
than 15 minutes.
than 15 minutes.
(If not executed this step, the condition for W/B will be differ.)
(2) Changing to the av mode by pushing the input or front av
(2) Changing to the av mode by pushing the input or front av
key.(av mode : av1 or av2 or av3)
(3) Display the internal pattern of the VCT-Pro IC by pushing
the IN-START.
(4) Stick sensor to center of the screen and select each items
(Red/Green/Blue Gain and Offset) using
D
/
E
(CH+/-) key
on R/C.
(5) Adjust R Gain / B Gain using
F
/
G
(VOL+/-) key on R/C.
(6) Adjust two modes of Cool(Dynamic) and Warm(Mild) as
below figure.
(Fix the one of R/G/B and change the others)
1. Push the one time the in-start key : Dynamic(Cool)
2. Push the two more the in-start key : Mild(Warm)
(Fix the one of R/G/B and change the others)
1. Push the one time the in-start key : Dynamic(Cool)
2. Push the two more the in-start key : Mild(Warm)
Color Coordinate
x
y
0.283±0.002
0.293±0.002
0.329±0.002
11,000K
9,300K
6,500K
0.000
0.000
0.003
0.276±0.002
0.285±0.002
0.313±0.002
COOL
MEDIUM
WARM
Mode
Temp
uv
CSM
Remark
Cool
Normal
Warm
Dynamic
Standard
Mild
PSM
Adjustment
Aging On/Off
Input select
R GAIN
G GAIN
B GAIN
R GAIN
G GAIN
B GAIN
R GAIN
G GAIN
B GAIN
CMD(HEX)
F3
F4
16
18
1A
16
18
1A
16
18
1A
ADR
00
00
00
01
02
VALUE
FF/00
00 - FE
00 - FE
00 - FE
00 - FE
00 - FE
00 - FE
00 - FE
00 - FE
00 - FE
Detail
OO : OFF
01 : ON
FF : WB Ready
0x10 : TV
0x20 : AV1
0x21 : AV2
0x23 : AV3
0x40 : Component1
0x50 : RGB DTV
0x60 : RGB PC
0x90 : HDMI1 DTV
GAIN adjustment
CSM COOL
GAIN adjustment
CSM NORMAL
GAIN adjustment
CSM WARM
Color Coordinate
x
y
0.283±0.002
0.293±0.002
0.329±0.002
11,000K
9,300K
6,500K
0.000
0.000
0.003
0.276±0.002
0.285±0.002
0.313±0.002
COOL
MEDIUM
WARM
Mode
Temp
uv
- 16 -
* Refer to the below case to know what value is fixed.
* CASE
- First adjust the coordinate much away from the target
value(x, y).
1) x, y > target
(1) Decrease the R, G.
2) x, y < target
(1) First decrease the B gain.
(2) Decrease the one of the others.
(2) Decrease the one of the others.
- In case of decreasing the x, decreasing the R : fix G
- In case of decreasing the y , decreasing the G : fix R
- In case of decreasing the y , decreasing the G : fix R
3) x > target , y < target
(1) First decrease B, so make y a little more than the target.
(2) Adjust x value by decreasing the R.
(2) Adjust x value by decreasing the R.
4) x < target , y > target
(1) First decrease B, so make x a little more than the target.
(2) Adjust x value by decreasing the G.
(2) Adjust x value by decreasing the G.
(7) When adjustment is completed, Exit adjustment mode
using EXIT key on R/C.
13. Input the Shipping Option Data
(1) Push the ADJ key in a Adjust Remote control.
(2) Input the Option Number that was specified in the BOM,
(2) Input the Option Number that was specified in the BOM,
into the Shipping area.
(3) The work is finished, Push
A
Key.
14. Default Value in Adjustment mode
(Default values maybe modified the module condition)
14-1. White Balance
16. Sound spec.
Item
Dielectric Voltage (AC <-> FG)
Dielectric Voltage (Without FG)
Value
1.5
1.5
3
3
Unit
kV
kV
Remark
At 100mA for 1sec (Line)
At 100mA for 1min (OQC)
At 100mA for 1sec (Line)
At 100mA for 1min (OQC)
Item
Min
Typ
Max
Unit
Remark
Audio Practical Max Output, L(Mono)/R
9
10
12
W
PDP
<Default Value on OSD>
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