DOWNLOAD LG 47LX9550-CA (CHASSIS:LC03M) Service Manual ↓ Size: 6.79 MB | Pages: 42 in PDF or view online for FREE

Model
47LX9550-CA (CHASSIS:LC03M)
Pages
42
Size
6.79 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
47lx9550-ca-chassis-lc03m.pdf
Date

LG 47LX9550-CA (CHASSIS:LC03M) Service Manual ▷ View online

- 9 -
- Adjust sequence
A
Press the PIP key of the ADJ remote control. (This PIP
key is hot key to enter the VCOM adjusting mode)
(Or After enter Service Mode by pushing “ADJ” key, then
Enter V-Com Adjust mode by pushing “
G
” key at “12. V-
Com”)
A
As pushing the right or the left button on the remote
control, And find the V-COM value Which is no or
minimized the Flicker.
(If there is no flicker at default value, Press the exit key
and finish the VCOM adjustment.)
A
Push the OK key to store value. Then the message
“Saving OK” is pop.
A
Press the exit key to finish VCOM adjustment.
3.6. Model name & serial number download
(1) Model name & Serial number D/L
A
Press “Power on” key of service remote control.(Baud
rate : 115200 bps)
A
Connect RS232 Signal Cable to RS-232 Jack.
A
Write Serial number by use RS-232.
A
Must check the serial number at Instart menu. 
(2) Method & notice
A. Serial number download is using of scan equipment.
B. Setting of scan equipment operated by Manufacturing
Technology Group.
C. Serial number download must be conformed when it is
produced in production line, because serial number
download is mandatory by D-book 4.0
* Manual Download (Model Name and Serial Number)
If the TV set is downloaded by OTA or service man,
sometimes model name or serial number is initialized.(Not
always)
There is impossible to download by bar code scan, so It
need Manual download.
a. Press the ‘instart’ key of ADJ remote control.
b. Go to the menu ‘5.Model Number D/L’ like below photo.
c. Input the Factory model name(ex 42LE5500-CA) or Serial
number like photo.
d. Check the model name Instart menu -> Factory name
displayed (ex 42LE7500-CB)
e. Check the Diagnostics (DTV country only) -> Buyer model
displayed (ex 42LE7500-CB)
4. Manual Adjustment
4.1. ADC(GP2) Adjustment
4.1.1. Overview
ADC adjustment is needed to find the optimum black level and
gain in Analog-to-Digital device and to compensate RGB
deviation.
4.1.2. Equipment & Condition
1) Adjust Remocon
2) 801GF(802B, 802F, 802R) or MSPG925FA Pattern Generator
- Resolution :
480i, 720*480 (MSPG-925FA -> Model: 209, Pattern: 65)
- 480i
1080p, 1920*1080 (MSPG-925FA -> Model: 225, Pattern:
65) - 1080p
- Pattern : Horizontal 100% Color Bar Pattern
- Pattern level: 0.7 ± 0.1 Vp-p
- Image
3) Must use standard cable
4.1.3. Adjust method
(1) ADC 480i, 1080p Comp1
1) Check connected condition of Comp1 cable to the equipment
2) Give a 480i, 1080p Mode, Horizontal 100% Color Bar
Pattern to Comp1.
(MSPG-925FA -> Model: 209, Pattern: 65) - 480i
(MSPG-925FA -> Model: 225, Pattern: 65) - 1080p 
3) Change input mode as Component1 and picture mode
as “Standard”
4) Press the In-start Key on the ADJ remote after at least 1
min of signal reception. Then, select 7. External ADC ->
1. COMP 1080p on the menu. Press enter key. The
adjustment will start automatically.
5) If ADC calibration is successful, “ADC RGB Success” is
displayed. If ADC calibration is failure, “ADC RGB Fail”
is displayed.
6) If ADC calibration is failure, after recheck ADC pattern or
condition retry calibration Error message refer to 5).
(2) ADC 1920*1080 RGB
1) Check connected condition of Component & RGB cable
to the equipment.
2) Give a 1920*1080 Mode, 100 % Horizontal Color Bar
Pattern to RGB port.
(MSPG-925 Series -> model: 126 , pattern: 65 ) 
3) Change input mode as RGB and picture mode as
“Standard”.
4) Press the In-start Key on the ADJ remote after at least 1
min of signal reception. Then, select 7. External ADC ->
1. COMP 1080p on the menu. Press enter key. The
adjustment will start automatically.
5) If ADC calibration is successful, “ADC RGB Success” is
displayed. If ADC calibration is failure, “ADC RGB Fail”
is displayed.
6) If ADC calibration is failure, after recheck ADC pattern or
condition retry calibration Error message refer to 5).
[Visual Adjust and control the Voltage level]
Model
V-CAM default value
42LE8500
435
- 10 -
4.2. 
EDID(The Extended Display Identification
Data)/DDC(Display Data Channel) download
(1) Overview
It  is  a  VESA  regulation.  A  PC  or  a  MNT  will  display  an
optimal resolution through information sharing without any
necessity of user input. It is a realization of “Plug and Play”.
(2) Equipment
- Adjust remote control
- Since embedded EDID data is used, EDID download JIG,
HDMI cable and D-sub cable are not need.
(3) Download method
1) Press  Adj.  key  on  the  Adj.  R/C,  then  select  “10.EDID
D/L”, By pressing Enter key, enter EDID D/L menu.
2) Select  [Start]  button  by  pressing  Enter  key,  HDMI1  /
HDMI2 / HDMI3 / HDMI4 / RGB are Writing and display
OK or NG.
4.3. White Balance Adjustment
4.3.1 Overview
(1) W/B adj. Objective & How-it-works
(2) Objective: To     reduce each Panel’s W/B deviation
(3) How-it-works  :  When  R/G/B  gain  in  the  OSD  is  at  192,  it
means the panel is at its Full Dynamic Range. In order to
prevent saturation of Full Dynamic range and data, one of
R/G/B is fixed at 192, and the other two is lowered to find
the desired value. 
(4) Adj. condition : normal temperature
1) Surrounding Temperature : 25 ºC ± 5 ºC
2) Warm-up time: About 5 Min
3) Surrounding Humidity : 20 % ~ 80 %
4.3.2 Equipment
1) Color Analyzer: CA-210 (LED Module : CH 14)
2) Adj.  Computer(During  auto  adj.,  RS-232C  protocol  is
needed)
3) Adjust Remocon
4) Video  Signal  Generator  MSPG-925F  720p/216-Gray
(Model:217, Pattern:78)
-> Only when internal pattern is not available
A
Color Analyzer Matrix should be calibrated using CS-1000
4.3.3. Equipment connection MAP
D-sub to D-sub
DVI-D to HDMI or HDMI to HDMI
For HDMI EDID
For Analog EDID
Co lo r An alyzer
 
Co m p ut er
 
Pat t ern  Gen erat o r
 
RS -232C 
RS -232C 
RS -232C 
Probe
Signal Source
* If TV internal pattern is used, not needed
- 11 -
4.3.4. Adj. Command (Protocol)
<Command Format>
- LEN: Number of Data Byte to be sent
- CMD: Command
- VAL: FOS Data value
- CS: Checksum of sent data
- A: Acknowledge
Ex) [Send: JA_00_DD] / [Ack: A_00_okDDX]
A
RS-232C Command used during auto-adj.
Ex) wb 00 00   ->  Begin white balance auto-adj.
wb 00 10   ->  Gain adj.
ja 00 ff   ->  Adj. data
jb 00 c0
...
...
wb 00 1f   -> Gain adj. completed
*(wb 00 20(start), wb 00 2f(end)) -> Off-set adj.
wb 00 ff   -> End white balance auto-adj.
A
Adj. Map
4.3.5. Adj. method
(1) Auto adj. method
1) Set TV in adj. mode using POWER ON key.
2) Zero calibrate probe then place it on the center of the
Display.
3) Connect Cable (RS-232C)
4) Select mode in adj. Program and begin adjustment.
5) When adj. is complete (OK Sing), check adj. status pre
mode. (Warm, Medium, Cool)
6) Remove probe and RS-232C cable to complete adj.
A
W/B Adj. must begin as start command “wb 00 00” , and
finish as end command “wb 00 ff”, and Adj. offset if need.
(2) Manual adj. method
1) Set TV in Adj. mode using POWER ON
2) Zero Calibrate the probe of Color Analyzer, then place it
on the center of LCD module within 10cm of the surface.
3) Press ADJ key -> EZ adjust using adj. R/C -> 7. White-
Balance then press the cursor to the right (KEY 
G
).
(When KEY(
G
) is pressed 216 Gray internal pattern will
be displayed)
4) One of R Gain / G Gain / B Gain should be fixed at 192,
and the rest will be lowered to meet the desired value.
5) Adj. is performed in COOL, MEDIUM, WARM 3 modes
of color temperature.
A
If internal pattern is not available, use RF input. In EZ
Adj. menu 7.White Balance, you can select one of 2
Test-pattern: ON, OFF. Default is inner(ON). By
selecting OFF, you can adjust using RF signal in 216
Gray pattern.
A
Adj. condition and cautionary items
1) Lighting condition in surrounding area
Surrounding lighting should be lower 10 lux. Try to
isolate adj. area into dark surrounding.
2) Probe location
: Color Analyzer (CA-210) probe should be within 10
cm and perpendicular of the module surface (80° ~
100°)
3) Aging time
- After Aging Start, Keep the Power ON status during
5 Minutes.
- In case of LCD, Back-light on should be checked
using no signal or Full-white pattern.
LEN
CMD
VAL
CS
RS-232C COMMAND
Explanation
[CMD
ID
DATA]
wb
00
00
Begin White Balance adj.
wb
00
10
Gain adj.(internal white pattern)
wb
00
1f
Gain adj. completed
wb
00
20
Offset adj.(internal white pattern)
wb
00
2f
Offset adj. completed
wb
00
ff
ITEM
Command
Data Range
Default
(lower case ASCII)
(Hex.)
(Decimal)
Cmd 1
Cmd 2
Min
Max
Cool
R-Gain
j
g
00
C0
G-Gain
j
h
00
C0
B-Gain
j
i
00
C0
R-Cut
G-Cut
B-Cut
Medium
R-Gain
j
a
00
C0
G-Gain
j
b
00
C0
B-Gain
j
c
00
C0
R-Cut
G-Cut
B-Cut
Warm
R-Gain
j
d
00
C0
G-Gain
j
e
00
C0
B-Gain
j
f
00
C0
R-Cut
G-Cut
- 12 -
4.3.6. Reference (White Balance Adj. coordinate
and temperature)
A
Luminance : 216 Gray
A
Standard color coordinate and temperature using CS-1000
(over 66cm(26 inch))
A
Standard color coordinate and temperature using CA-210
(CH 14)
4.4. EYE-Q function check
Step 1) Turn on TV
Step 2) Press EYE key of Adj. R/C
Step 3) Cover  the  Eye  Q  II  sensor  on  the  front  of  the  using
your hand and wait for 6 seconds
Step 4) Confirm that R/G/B value is lower than 10 of the “Raw
Data  (Sensor  data,  Back  light)”.  If  after  6  seconds,
R/G/B  value  is  not  lower  than  10,  replace  Eye  Q  II
sensor.
GP2 
Aging time 
(Min) 
Cool 
Medium 
Warm 
269 
273 
285 
293 
313 
329 
0-2 
280 
291 
296 
311 
319 
340 
3-5 
278 
288 
294 
308 
317 
338 
6-9 
276 
285 
292 
305 
315 
335 
10-19 
274 
282 
290 
302 
313 
332 
20-35 
273 
279 
289 
299 
312 
329 
36-49 
270 
276 
287 
296 
310 
326 
50-79 
269 
273 
286 
293 
308 
323 
Over 80 
269 
273 
285 
293 
308 
323 
1) Edge / IOP LED Models
4.3.7 Local Dimming Inspection
4.3.8 IOP LED models with local dimming
Press ‘TILT” key of the Adj. R/C and check moving patterns. 
The black cross-bar patterns moves from top-left to Bottom-right. 
If local dimming function does not work, a whole screen shows full white.
Edge LED models with local dimming
1) Press ‘TILT” key of the Adj. R/C and check moving patterns. 
The black bar patterns moves from left to right.If local dimming function
 does not work, a whole screen shows full white.
Step 5) Remove your hand from the Eye Q II sensor and wait
for 6 seconds.
Step 6) Confirm that “ok” pop up. If change is not seen,
replace Eye Q II sensor.
4.5. Option selection per country
(1) Overview
- Option selection is only done for models in Non-USA
- Applied model: LC03E Chassis applied None USA model
(CHINA, HONGKONG)
(2) Method
1) Press ADJ key on the Adj. R/C, then select Country
Group Menu
2) Depending on destination, select KR or US, then on the
lower Country option, select US, CA, MX. Selection is
done using +, - KEY.
4.8. Tool Option selection
- Method : Press Adj. key on the Adj. R/C, then select Tool
option.
4.9. Ship-out mode check(In-stop)
After final inspection, press IN-STOP key of the Adj. R/C and
check that the unit goes to Stand-by mode.
After final inspection, Always turn on the Mechanical S/W.
5.1. Method
- Check that Power Cord is fully inserted to the SET.
(If loose, re-insert)
- Unit fully inserted Power cord, Antenna cable and A/V
arrive to the auto-check process. 
- Connect D-terminal to AV JACK TESTER
- Auto CONTROLLER(GWS103-4) ON
- Perform GND TEST
- If NG, Buzzer will sound to inform the operator.
- If OK, changeover to I/P check automatically.
(Remove CORD, A/V form AV JACK BOX)
- Perform I/P test
- If NG, Buzzer will sound to inform the operator.
- If OK, Good lamp will lit up and the stopper will allow the
pallet to move on to next process.
5.2. Checkpoint
• TEST voltage
- GND: 1.5 KV / min at 100 mA
- SIGNAL: 3 KV / min at 100 mA
• TEST time: 1 second
• TEST POINT
- GND TEST = POWER CORD GND & SIGNAL CABLE
METAL GND
NEUTRAL
• LEAKAGE CURRENT: At 0.5 mArms
Mode
Color Coordination
Temp
∆UV
x
y
COOL
0.269
0.273
13000 K
0.0000
MEDIUM
0.285
0.293
9300 K
0.0000
WARM
0.313
0.329
6500 K
0.0000
Mode
Color Coordination
Temp
∆UV
x
y
COOL
0.269 ± 0.002 0.273 ± 0.002 13000 K 0.0000
MEDIUM 0.285 ± 0.002 0.293 ± 0.002 9300 K
0.0000
WARM
0.313 ± 0.002 0.329 ± 0.002 6500 K
0.0000
▪ Standard color coordinate and temperature using 
   CA-210(CH-14) – by aging time
 
MODEL
Tool 1
Tool 2
Tool 3
Tool 4
Tool 5
42LE85**
24896 
32023 
64572 
14764
2995
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