DOWNLOAD LG 32LG70 (CHASSIS:LA86B) Service Manual ↓ Size: 6.4 MB | Pages: 37 in PDF or view online for FREE

Model
32LG70 (CHASSIS:LA86B)
Pages
37
Size
6.4 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
32lg70-chassis-la86b.pdf
Date

LG 32LG70 (CHASSIS:LA86B) Service Manual ▷ View online

- 13 -
(3) Adjustment Map
5-4. Adjustment of White Balance
(Automatic Adjustment)
1) The adjustment condition should be set by the Power On
key.
2) Perform the zero calibration of the Color Analyzer and
place the probe close to the display center.
3) Connect the communication cable (RS-232C).
4) Select the desired model of the adjustment program and
perform the adjustment.
5) After the adjustment is ended (check the OK sign), check
the adjustment condition for each mode of the set.
(Warm, Medium, Cool)
6) Disconnect the probe and the communication cable to end
the adjustment.
* The adjustment should be started with "wb 00 00" and
ended with "wb 00 ff", and the offset should be adjusted
when necessary.
5-5. Manual white Balance
1) The adjustment condition should be set by the Power On
key.
2) Press the ADJ of the R/C to enter into 'EZ-ADJUST'.
3) Select '10.TEST PATTERN' with the CH +/- key and press
the Enter key for 30 minutes or longer to perform the heat
run.
4) Perform the zero calibration of the Color Analyzer and fix
the sensor with the 10cm or less distance at the center of
the LCD module surface when adjusting.
5) Press the ADJ of the R/C to select '7.White-Balance' of the
Ez-Adjust and press the right arrow key(
G
) to enter into the
adjustment mode. (As soon as you press '
G
', the screen is
entered into the full white inner pattern.)
6) Fix one of the R/G/B gains to 192 and decrease the
remaining two gains to adjust not to exceed 192.
7) The adjustment is done at three white balances of Cool,
Medium and Warm.
* The inner pattern is basically used, and if it is not possible,
the adjustment can be done by selecting the HDMI input.
NONE, INNER or HDMI can be selected by the bottom
option at the Ez Adjust Menu 7.White Balance menu and it is
set to INNER as default. If the adjustment cannot be done by
the inner pattern, select the HDMI to adjust.
* Adjustment environment and reference
1) Environment illuminance
Adjust it to 10 LUX or less at the place where the light
source such as lamp should be blocked at maximum.
2) Probe location
: Maintain the Color Analyzer (CA-210) close to the
module surface by 10cm or less and keep the probe of
the Color Analyzer perpendicular to the module
surface (80°~ 100°).
3) Aging time
- Keep the power on after the aging start (with no power
off) to perform the heat run for 15 minutes or longer.
- Make sure that the back light is turned on by using no
signal and the full white pattern or others.
5-6. Reference 
(1) Brightness: Full white 216 Gray 
(2) Standard color coordinate and white balance when using
the CS-1000
(3) Standard color coordinate and white balance when using
the CA-210 (CH 10)
6. Select the option by country
6-1. Overview
model only, which selects the rating related country.
2) Applied models: LA84A Chassis applied None USA
Model(Canada, Mexico)
6-2. How to select  
1) Press the In-Start key of the R/C and press the red oval
OP1(PIP CH-) key to enter into the Factory Option menu.
2) Select 1.USA, 2.CANADA or 3.MEXICO from the country
select according to the destination. At this time, use the
volume +/- key to adjust 
ITEM
Command
Data Range
Default
(Hex.)
(Decimal)
Cmd 1
Cmd 2
Min
Max
Cool
R-Gain
j
g
00
C0
TBD
G-Gain
j
h
00
C0
TBD
B-Gain
j
i
00
C0
TBD
R-Cut
TBD
G-Cut
TBD
B-Cut
TBD
Medium
R-Gain
j
a
00
C0
TBD
G-Gain
j
b
00
C0
TBD
B-Gain
j
c
00
C0
TBD
R-Cut
TBD
G-Cut
TBD
B-Cut
TBD
Warm
R-Gain
j
d
00
C0
TBD
G-Gain
j
e
00
C0
TBD
B-Gain
j
f
00
C0
TBD
R-Cut
G-Cut
Mode
Color Coordination
Temp
∆UV
x
y
COOL
0.276
0.283
11000K
0.0000
MEDIUM
0.285
0.293
9300K
0.0000
WARM
0.313
0.329
6500K
0.0000
Mode
Color Coordination
Temp
∆UV
x
y
COOL
0.276±0.002
0.283±0.002
11000K
0.0000
MEDIUM
0.285±0.002
0.293±0.002
9300K
0.0000
WARM
0.313+0.002
0.329±0.002
6500K
0.0000
7. Set the shipping mode (In-stop)
- After completing the final test, in order to set the set to the
shipping condition, press the In-Stop key of the R/C to make
sure that the set is turned off.
8. GND and resisting pressure test
8-1. How to test
(1) Preparing for the automatic test on the GND & resisting
pressure 
- Make sure that the power cord is completely inserted into
the set. (When it is disconnected or loosened, test after
inserting it)
(2) Perform the automatic test on the GND & resisting pressure
1) The set with power cord, the cord and the A/V
completely inserted into the tuner is loaded on the pallet
and entered into the automatic test process.
2) Connect the D-terminal AV JACK tester
3) Turn on the automatic (GWS103-4)
4) Perform the GND TEST
5) If it is not good, the buzzer is operated to notify the test
result to the operator.
6) If it is OK, it is automatically switched to the resisting
pressure test. (Disconnect the cord and the A/V from the
AV JACK BOX)
6) Perform the resisting pressure test
7) If it is not good, the buzzer is operated to notify the test
result to the operator.
8) If it is OK, the GOOD LAMP is turned and the stopper is
moves down, and it moves to the next process.
8-2. Items to manage
(1) TEST voltage
- GND:1.5KV/min at 100mA
- SIGNAL:3KV/min at 100mA
(2) TEST time:1 second
(3) TEST POINT
- GND test = between Power cord GND and Signal cable
metal GND
- Resisting pressure test = between Power cord GND and
Live & Neutral
(4) LEAKAGE CURRENT: Set to 0.5mArms 
9. ISP Download (option)
9-1. Overview
The Micom upgrade via the external port for the service for
the customer.
9-2. Device to use
1) PC
2) B/D for the interface (IIC & ISP)
3) Jig for downloading (for the power supply)
9-3. Adjustment wiring diagram (Download
device configuration diagram) 
9-4. Adjustment condition(Download condition)
1) IC name & circuit number: MYSON MTV416GMF & IC4015
2) Power supply: 5V (P4004 Pin 3)
3) SCL: D-sub Pin 10
4) SDA: D-sub Pin  7
9-5. How to adjust (for downloading) 
1) After executing LGE Monitor Tools v1.1, click the first icon.
(See the figure)
2) When the screen is displayed as shown at the below figure,
set the items as follows:
- MCU Select: MTV512M64
- R/W Option: Auto Write(Verify)
- Jig Option: Myson
- Transmit Speed: Medium
- Check: blank
- PORT: Select the Parallel Port to use (LPT1 in general)
* caution: Select the EPP as LPT from the ROM BIAS setting.
3) Click the Load File Button, and select the desired Hex File
to download. (If no file is displayed, make sure that the file
format is selected as Hex file (*.hex))
- 14 -
Interface B/D
Main B/D
PC
PIN No.
KJ705
4) Click 'Send Button
10. USB S/W Download (option)
10-1. Overview
The USB download is for the quick service response via the
S/W upgrade and for applying the S/W upgrade necessary for
the board adjustment
10-2. How to dowunload
1) After turning on the set, make sure that the display screen
is turned on.
2) When the USB Memory Stick with the upgrade file applied
is inserted into the USB jack on the main board, the
following screen (example) is displayed after several
seconds
3) Check the current version at [Current TV Software Version
Information], check the S/W version to upgrade at [New
Found TV Software Version Information], and press the
Enter button of the TV remote controller.
4) Downloading is proceeded as shown at the below screen,
and when it is ended, turning on/off is automatically done.
(When the automatic proceeding is not smoothly done,
manually perform the power On/Off).
5) When downloading is ended, remove the USB Memory
Stick from the USB jack.
6) Press the IN-START button of the remote controller to
check the upgraded S/W version.
- 15 -
- 16 -
TROUBLESHOOTING
1. VIDEO
(1) Video path
AT/NT
Tuner
BCM355x
FMS6400
CVBS
IF_VSB/QAM
SD_CVBS1
EDSAFE_IF_N
EDSAFE_IF_P
SD_L1
SD_C1
S-video
AV1
SD_CVBS2
AV2
SD_CVBS3
Component1
SD_Y1
SD_PR1
SD_PB1
Component2
SD_Y2
SD_PR2
SD_PB2
RGB
SD_R
SD_G
SD_B
RGB_HSYNC
RGB_VSYNC
PI3HDMI341ART
HDMI1,2,3
HDMI_RX_0_CLK_N
HDMI_RX_0_CLK_P
HDMI_RX_0_DATA0_N
HDMI_RX_0_DATA0_P
HDMI_RX_0_DATA1_N
HDMI_RX_0_DATA1_P
HDMI_RX_0_DATA2_N
HDMI_RX_0_DATA2_P
LVDS_TX_0_DATA_0_N
LVDS_TX_0_DATA_0_P
LVDS_TX_0_DATA_1_N
LVDS_TX_0_DATA_1_P
LVDS_TX_0_DATA_2_N
LVDS_TX_0_DATA_2_P
LVDS_TX_0_DATA_3_N
LVDS_TX_0_DATA_3_P
LVDS_TX_0_DATA_4_N
LVDS_TX_0_DATA_4_P
LVDS_TX_1_DATA_0_N
LVDS_TX_1_DATA_0_P
LVDS_TX_1_DATA_1_N
LVDS_TX_1_DATA_1_P
LVDS_TX_1_DATA_2_N
LVDS_TX_1_DATA_2_P
LVDS_TX_1_DATA_3_N
LVDS_TX_1_DATA_3_P
LVDS_TX_1_DATA_4_N
LVDS_TX_1_DATA_4_P
LVDS_TX_0_CLK_N
LVDS_TX_0_CLK_P
LVDS_TX_1_CLK_N
LVDS_TX_1_CLK_P
LVDS (Module)
TMDS141
HDMI4
FRC 9459M A3
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