LG 32LG6000 (CHASSIS:LD89A) Service Manual ▷ View online
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ADJUSTMENT INSTRUCTION
1. Application Range
This spec. sheet is applied to all of the LD89A chassis
manufactured at LG TV Plant all over the world.
manufactured at LG TV Plant all over the world.
2. Specification.
(1) Because this is not a hot chassis, it is not necessary to use
an isolation transformer. However, the use of isolation
transformer will help protect test instrument.
transformer will help protect test instrument.
(2) Adjustment must be done in the correct order.
(3) The adjustment must be performed in the circumstance of
(3) The adjustment must be performed in the circumstance of
25±5°C of temperature and 65±10% of relative humidity if
there is no specific designation.
there is no specific designation.
(4) The input voltage of the receiver must keep 100-240V,
50/60Hz.
(5) The receiver must be operated for about 15 minutes prior
to the adjustment.
- After RGB Full White in HEAT-RUN Mode, the receiver
must be operated prior to the adjustment.
- Enter into HEAT-RUN MODE
1) Press the “POWER ON” KEY on Adjustment R/C.
2) Press the “ADJ KEY” on Adjustment R/C.
3) Select “3. Test Pattern” by using
2) Press the “ADJ KEY” on Adjustment R/C.
3) Select “3. Test Pattern” by using
D
/
E
(CH +/-) and
press ENTER(
A
)
4) Select “White” by using
F
/
G
(VOL +/-) and press
ENTER(
A
)
* Set is activated HEAT run without signal generator in this
mode.
* Single color pattern ( RED / BLUE / GREEN ) of HEAT
RUN MODE uses to check panel.
* Caution : If you turn on a still pattern more than 20
minutes (Especially digital pattern, cross hatch pattern),
an after image may be occur in the black level part of the
screen.
an after image may be occur in the black level part of the
screen.
3. PCB assembly adjustment method
Caution: Using ‘power on’ button of the Adjustment R/C ,
power on TV.
power on TV.
* ADC Calibration Protocol (RS232)
- Baud rate : 115200 bps
- RS232 Host : PC
- echo : none
- RS232 Host : PC
- echo : none
3.1 ADC adjustment
* Adjustment can be done using only internal ADC, so input
signal is not necessary.
* Required equipment : Adjustment R/C.
1) Press ADJ key on adjustment R/C.
2) Select “1. ADC calibration” by using
2) Select “1. ADC calibration” by using
D
/
E
(CH +/-) and press
ENTER(
A
)
3) Select “Start” by using
F
/
G
(VOL +/-) and press ENTER(
A
)
4) ADC adjustment is executed automatically.
3.2 PCMCIA CARD Checking Method
You must adjust DTV 29 Channel and insert PCMCIA CARD
to socket.
1) If PCMCIA CARD works normally, normal signals display
to socket.
1) If PCMCIA CARD works normally, normal signals display
on screen. But it works abnormally, “No CA module” words
display on screen.
display on screen.
* Caution: Set up “RF mode” before launching products.
4. Set Assembly adjustment method
4.1 EDID
(The Extended Display Identification DATA)
* When company internal production(total assembly), EDID
data must scan in DDC line.
4.1.1 EDID Download
Before downloading EDID Data, check the RGB/HDMI cable
is disconnected.
is disconnected.
1) Press ADJ key on Adjustment R/C.
2) Select “5.EDID D/L” by using
2) Select “5.EDID D/L” by using
D
/
E
(CH +/-) and press
ENTER(
A
)
3) Select “Start” by using
F
/
G
(VOL +/-) and press ENTER(
A
)
4) EDID DownLoad is executed if word “NG” is changed to
“OK” about all HDMI ports.
4.1.2 EDID Data
Item
CMD1 CMD2 Data0
Enter
Adjust ‘Mode In’
A
D
0
0
When transfer the ‘Mode In’,
Adjust Mode
Carry the command.
ADC adjust ADC Adjust
A
D
1
0
Automatically adjustment
(The use of a internal pattern)
Adjust ‘Mode Out’
A
D
9
0
Adjustment
A
D
9
9
To check ADC Adjustment
Confirmation
on Assembly line.
RF input
AV / Component / RGB input
NO SIGNAL or White noise
NO SIGNAL
No
Item
Condition
Hex Data
1
Manufacturer ID
GSM
1E6D
2
Version
Digital : 1
01
3
Revision
Digital : 3
03
- 10 -
1) HDMI1
2) HDMI2
3) HDMI3
4) HDMI4
- Detail EDID Options are below (
ⓐ, ⓑ, ⓒ, ⓓ, ⓔ,)
ⓐ Product ID
ⓑ Serial No: Controlled on production line.
ⓒ Month, Year: Controlled on production line
ⓑ Serial No: Controlled on production line.
ⓒ Month, Year: Controlled on production line
: ex) Monthly : ‘09’ -> ‘09’
Year: ‘2006’ Ë ‘10’
ⓓ Model Name(Hex):
ⓔ Checksum: Changeable by total EDID data.
ⓔ Checksum: Changeable by total EDID data.
4.2. Adjustment of White Balance
(1) Test Equipment
- Color Analyzer (CS-1000, CA-100+(CH.9), CA-210(CH.9) )
- Please adjust CA-100+ / CA-210 by CS-1000 before
- Please adjust CA-100+ / CA-210 by CS-1000 before
measuring
-> You should use Channel 9 which is Matrix compensated
(White, Red, Green, Blue revised) by CS-1000 and
adjust in accordance with White balance adjustment
coordinate.
adjust in accordance with White balance adjustment
coordinate.
* Color temperature standards according to CSM and Module
* Change target luminance and range of the Auto adjustment
W/B equipment.
CSM
LCD
Cool
11000K
Medium
9300K
Warm
6500K
Target luminance
65
Gamma
20
* White balance adjustment coordinate and color temperature
- PC (for communication through RS-232C) -> UART Baud
rate : 115200 bps
rate : 115200 bps
(2) Connecting picture of the measuring instrument (On
Automatic control )
Inside PATTERN is used when W/B is controlled. Connect to
auto controller or push Adjustment R/C IN-START -> Enter
the mode of White-Balance, the pattern will come out.
auto controller or push Adjustment R/C IN-START -> Enter
the mode of White-Balance, the pattern will come out.
(3) 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) Adhere closely the Color Analyzer ( CA210 ) to the
around is blocked. (illumination is less than 10ux).
2) Adhere closely the Color Analyzer ( CA210 ) to the
module less than 10cm distance, keep it with the surface
of the Module and Color Analyzer’s Prove
vertically.(80~100°).
of the Module and Color Analyzer’s Prove
vertically.(80~100°).
3) Aging time
- After aging start, keep the power on (no suspension of
power supply) and heat-run over 15 minutes.
- Using ‘no signal’ or ‘full white pattern’ or the others,
check the back light on.
- Auto adjustment Map(RS-232C)
(4) Manual white Balance
1) Press the ADJ KEY on Adjustment R/C.
Select “3. Test Pattern” by using
D
/
E
(CH +/-) and press
ENTER(
A
)
Select “White” by using
F
/
G
(VOL +/-) and press
ENTER(
A
) and heat run over 15 minutes.
2) Zero Calibrate CA-100+ / CA-210, and when controlling,
stick the sensor to the center of LCD module surface.
3) Press the ADJ KEY on Adjustment R/C
4) Select “2. White Balance” and press
4) Select “2. White Balance” and press
G
(VOL +)
Set test-pattern on and display inside pattern.
5) Control is carried out on three color temperatures,
COOL, MEDIUM, WARM.
(Control is carried out three times)
< Temperature: COOL >
- R-Cut / G-Cut / B-Cut is set to 64.
- Control R-Gain and G-Gain.
- Each gain is limited to 192.
- Control R-Gain and G-Gain.
- Each gain is limited to 192.
< Temperature: MEDIUM >
- R-Cut / G-Cut / B-Cut is set to 64.
- Control R-Gain and B-Gain.
- Each gain is limited to 192.
- Control R-Gain and B-Gain.
- Each gain is limited to 192.
< Temperature: WARM >
- R-Cut / G-Cut / B-Cut is set to 64.
- Control G-Gain and B-Gain.
- Each gain is limited to 192.
- Control G-Gain and B-Gain.
- Each gain is limited to 192.
* One of R Gain / G Gain / B Gain should be kept on
192, and adjust other two lower than 192.
(When R/G/B GAIN are all 192, it is the FULL
DYNAMIC Range of Module)
(When R/G/B GAIN are all 192, it is the FULL
DYNAMIC Range of Module)
(5) Input the Shipping Option Data
1) Push the ADJ key in a Adjustment R/C.
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.
5. Set Information
(Serial No & Model name)
5.1 Check the serial number & Model Name
1) Push the menu button in DTV mode.
2) Select the SETUP _ Select the Diagnostics.
3) Check the Serial Number.
2) Select the SETUP _ Select the Diagnostics.
3) Check the Serial Number.
- 11 -
Cool
CS-1000
CA-100+(CH.9)
CA-210(CH.9)
X
0.276
0.276±0.002
0.276±0.002
Y
0.283
0.283±0.002
0.283±0.002
∆uv
0.000
0.000
0.000
Medium CS-1000
CA-100+(CH.9)
CA-210(CH
9)
X
0.285
0.285±0.002
0.285±0.002
Y
0.293
0.293±0.002
0.293±0.002
∆uv
0.000
0.000
0.000
Warm
CS-1000
CA-100+(CH.9)
CA-210(CH 9)
X
0.313
0.313±0.002
0.313±0.002
Y
0.329
0.329±0.002
0.329±0.002
∆uv
0.000
0.000
0.000
RS-232C COMMAND
MIN
CENTER
Max
[CMD ID DATA]
(DEFAULT)
Cool
Medium Warm
Cool
Medium Warm
R Gain
jg
Ja
jd
00
192
192
192
255
G Gain
jh
Jb
je
00
192
192
192
255
B Gain
ji
Jc
jf
00
192
192
192
255
R Cut
64
64
64
128
G Cut
64
64
64
128
B Cut
64
64
64
128
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TROUBLE SHOOTING
1. Power Board
1-1. The whole flow chart which it follows in voltage output state
Does not screen
whole comes out?
Yes
No
Yes
Start check
1. Check the Power off condition.
Is it identical with
power off condition?
Is the interface
signal operated?
Yes
2. Check the interface signal condition.
Yes
3. Check the St_by 5V
signal circuit.
Yes
4. Check the AC detect
signal circuit.
Yes
No
5. Check the VSC RL_ON
/PWR_ON/OFF signal.
No
No
No
Does not
low voltage output
comes out?
Yes
Does not the
St-by 5V(P-5V) signal
comes out?
Does not the
AC Detect signal
comes out?
No
Does not the
RL_ON/PWR_ON/OFF
comes out?
No
Yes
7. Check the VSC INV_CTL signal?
Yes
8. Check the INV 24V
voltage output circuit.
voltage output circuit.
Manufacture enterprise
meaning of a passage.
meaning of a passage.
Yes
6. Check the VSC low
Voltage output.
Voltage output.
Does not
inverter signal output
comes out?
Yes
Does not the
VSC signal INV_CTL
comes out?
Does not the
INV 24V voltage output
comes out?
No
Does not the
VSC Low voltage output
comes out?
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