LG 42LN52XX / 42LN5200 / 42LN5204 (CHASSIS:LD36M) Service Manual ▷ View online
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* After downloading, have to adjust Tool Option again.
(1) Push "IN-START" key in service remote control.
(2) Select "Tool Option 1" and push "OK" key.
(3) Punch in the number. (Each model has their number)
(4) Completed selecting Tool option.
3.1. ADC Process
* If ADC processes as OTP, There is no need to proceed
internal ADC.
- Enter Service Mode by pushing "ADJ" key,
Calibration".
<Caution> Using "P-ONLY" key of the Adjustment remote
control, power on TV.
* ADC Calibration Protocol (RS232)
Adjust Sequence
▪ aa 00 00 [Enter Adjust Mode]
▪ xb 00 40 [Component Input480i)]
▪ ad 00 10 [Adjust 480i & 1080p Comp]
▪ aa 00 90 End Adjust mode
* Required equipment : Adjustment remote control.
3.2. EDID Download
▪ After enter Service Mode by pushing "ADJ" key.
▪ Enter EDID D/L menu.
▪ Enter "START" by pushing "OK" key.
<Caution> Never connect HDMI cable when EDID downloaded.
3.3. EDID data
(1) HD HDMI EDID data(2D Model)
(2) FHD HDMI EDID data(2D Model)
(3) Detail EDID Options are below
a. Product ID
b. Serial No: Controlled on production line.
c. Month, Year: Controlled on production line:
ex) Week : '01' -> '01'
Year : '2013' -> '17' fix
d. Model Name(Hex):
cf) TV set’s model name in EDID data is below.
e. Checksum: Changeable by total EDID data.
f. Vendor Specific(HDMI)
NO
Item
CMD 1 CMD 2 Data 0
Enter
Adjust MODE
Adjust
‘Mode In’
A
A
0
0
When transfer the ‘Mode In’,
Carry the command.
ADC adjust
ADC Adjust
A
D
1
0
Automatically adjustment
(The use of a internal pattern)
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
00 00 FF FF FF FF FF FF 00 1E 6D
a
b
10
c
01 03 80 A0 5A 78 0A EE 91 A3 54 4C 99 26
20 0F 50 54 A1 08 00 31 40 45 40 61 40 71 40 81 80
30 01 01 01 01 01 01 02 3A 80 18 71 38 2D 40 58 2C
40 45 00 A0 5A 00 00 00 1E 66 21 50 B0 51 00 1B 30
50 40 70 36 00 A0 5A 00 00 00 1E 00 00 00 FD 00 3A
60 3E 1E 53 10 00 0A 20 20 20 20 20 20
30 01 01 01 01 01 01 02 3A 80 18 71 38 2D 40 58 2C
40 45 00 A0 5A 00 00 00 1E 66 21 50 B0 51 00 1B 30
50 40 70 36 00 A0 5A 00 00 00 1E 00 00 00 FD 00 3A
60 3E 1E 53 10 00 0A 20 20 20 20 20 20
d
70
d
01
e
80 02 03 22 F1 4E 10 9F 04 13 05 14 03 02 12 20 21
90 22 15 01 26 15 07 50 09 57 07
90 22 15 01 26 15 07 50 09 57 07
f
A0
f
01 1D 80 18 71 1C 16 20 58 2C 25 00 20 C2
B0 31 00 00 9E 01 1D 00 72 51 D0 1E 20 6E 28 55 00
C0 20 C2 31 00 00 1E 02 3A 80 18 71 38 2D 40 58 2C
D0 45 00 A0 5A 00 00 00 1E 01 1D 00 BC 52 D0 1E 20
E0 B8 28 55 40 C4 8E 21 00 00 1E 00 00 00 00 00 00
F0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
C0 20 C2 31 00 00 1E 02 3A 80 18 71 38 2D 40 58 2C
D0 45 00 A0 5A 00 00 00 1E 01 1D 00 BC 52 D0 1E 20
E0 B8 28 55 40 C4 8E 21 00 00 1E 00 00 00 00 00 00
F0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
e
MODEL NAME
HEX
EDID Table
DDC Function
HD/FHD Model
0001
01 00
Analog/Digital
Model name
MODEL NAME(HEX)
LG TV
00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 (LG TV)
EDID C/S data
HD
HDMI
Check sum
(Hex)
Block 0
A3
Block 1
5B (HDMI1)
4B (HDMI2)
4B (HDMI2)
Input
Model name(HEX)
HDMI1
67030C001000801E
HDMI2
67030C002000801E
EZ ADJUST
0. Tool Option1
1. Tool Option2
2. Tool Option3
3. Tool Option4
4. Tool Option5
5. Tool Option Commercial
6. Country Group
7. Area Option
1. Tool Option2
2. Tool Option3
3. Tool Option4
4. Tool Option5
5. Tool Option Commercial
6. Country Group
7. Area Option
8.ADC Calibration
►
9. White Balance
10. 10 Point WB
11. Test Pattern
12 EDID D/L
13. Sub B/C
14. Ext. Input Adjust
10. 10 Point WB
11. Test Pattern
12 EDID D/L
13. Sub B/C
14. Ext. Input Adjust
ADC Calibration
ADC Comp 480i
ADC Comp 1080p
ADC Comp 1080p
ADC Type
◄
►
OK
OK
OK
OTP
Start
Reset
EZ ADJUST
0. Tool Option1
1. Tool Option2
2. Tool Option3
3. Tool Option4
4. Tool Option5
5. Tool Option Commercial
6. Country Group
7. Area Option
8. ADC Calibration
9. White Balance
10. 10 Point WB
11. Test Pattern
1. Tool Option2
2. Tool Option3
3. Tool Option4
4. Tool Option5
5. Tool Option Commercial
6. Country Group
7. Area Option
8. ADC Calibration
9. White Balance
10. 10 Point WB
11. Test Pattern
12. EDID D/L
►
13. Sub B/C
14. Ext. Input Adjust
14. Ext. Input Adjust
EDID D/L
HDMI1
NG
HDMI2
NG
Start
Reset
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
00 00 FF FF FF FF FF FF 00 1E 6D
a
b
10
c
01 03 80 A0 5A 78 0A EE 91 A3 54 4C 99 26
20 0F 50 54 A1 08 00 31 40 45 40 61 40 71 40 01 01
30 01 01 01 01 01 01 66 21 50 B0 51 00 1B 30 40 70
40 36 00 40 84 63 00 00 1E 64 19 00 40 41 00 26 30
50 18 88 03 06 40 84 63 00 00 18 00 00 00 FD 00 3A
60 3E 1E 53 10 00 0A 20 20 20 20 20 20
30 01 01 01 01 01 01 66 21 50 B0 51 00 1B 30 40 70
40 36 00 40 84 63 00 00 1E 64 19 00 40 41 00 26 30
50 18 88 03 06 40 84 63 00 00 18 00 00 00 FD 00 3A
60 3E 1E 53 10 00 0A 20 20 20 20 20 20
d
70
d
01
e
80 02 03 22 F1 4E 10 1F 04 93 05 14 03 02 12 20 21
90 22 15 01 26 15 07 50 09 57 07
90 22 15 01 26 15 07 50 09 57 07
f
A0 80 1E 01 1D 80 18 71 1C 16 20 58 2C 25 00 A0 5A
B0 00 00 00 9E 01 1D 00 72 51 D0 1E 20 6E 28 55 00
C0 20 C2 31 00 00 1E 8C 0A D0 8A 20 E0 2D 10 10 3E
D0 96 00 A0 5A 00 00 00 18 02 3A 80 18 71 38 2D 40
E0 58 2C 45 00 A0 5A 00 00 00 1E 00 00 00 00 00 00
F0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
B0 00 00 00 9E 01 1D 00 72 51 D0 1E 20 6E 28 55 00
C0 20 C2 31 00 00 1E 8C 0A D0 8A 20 E0 2D 10 10 3E
D0 96 00 A0 5A 00 00 00 18 02 3A 80 18 71 38 2D 40
E0 58 2C 45 00 A0 5A 00 00 00 1E 00 00 00 00 00 00
F0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
e
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3.4. Function Check
- Check display and sound
■ Check Input and Signal items.
1) TV
2) AV (SCART / CVBS)
3) HDMI
* Display and Sound check is executed by Remote control.
<Caution>
Not to push the INSTOP key after completion if the function
inspection.
4. Total Assembly line process
4.1.V-com adjustment
■ Insert V-com adjust pattern
(1) Push ‘Power Only’ key on SVC remote controller.
(2) Push ‘Yellow’ key.
(4) Push number ‘0’ key.
- Default : 160
■ V-com adjust (Variable range : ±5)
- 5 digit move → push navigation key up or down.
- 1 digit move → push navigation key left or right.
Keep move V-com adjust until disappear flicker.
After V-com adjust push ‘enter’ (save) key.
■ Exit V-COM adjust pattern
- Push ‘Power Only’ key on SVC remote control.
4.2. White Balance adjustment
▪ W/B Equipment condition
CA210 : LED -> CH14, Test signal: Inner pattern(80IRE)
▪ Above 5 minutes H/run in the inner pattern. (“power on” key
of adjust remote control)
▪ Normal line(LGD/CMI, March ~ December for Gumi, Global)
▪ Normal line(LGD/CMI, January ~ February for Gumi, Apply
not Cinema Screen)
* Aging chamber(LGD/CMI)
* 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 P-ONLY → Enter the
mode of White-Balance, the pattern will come out.
Mode
Temp
Coordinate spec
Cool
13,000 K X=0.271 (±0.002)
Y=0.270 (±0.002)
Medium
9,300 K
X=0.285 (±0.002)
Y=0.293 (±0.002)
Warm
6,500 K
X=0.313 (±0.002)
Y=0.329 (±0.002)
NetCase4 Aging time
(Min)
Cool
Medium
Warm
X
y
x
y
x
y
271
270
285
293
313
329
1
0-2
281 287 295
310
320
342
2
3-5
280 285 294
308
319
340
3
6-9
278 284 292
307
317
339
4
10-19
276 281 290
304
315
336
5
20-35
275 277 289
300
314
332
6
36-49
274 274 288
297
313
329
7
50-79
273 272 287
295
312
327
8
80-119
272 271 286
294
311
326
9
Over 120
271 270 285
293
310
325
NetCase4 Aging time
(Min)
Cool
Medium
Warm
X
y
x
y
x
y
271
270
285
293
313
329
1
0-2
283 292 297
315
322
347
2
3-5
282 290 296
313
321
345
3
6-9
280 288 294
311
319
343
4
10-19
277 284 291
307
316
339
5
20-35
275 279 289
302
314
334
6
36-49
274 275 288
298
313
330
7
50-79
273 272 287
295
312
327
8
80-119
272 271 286
294
311
326
9
Over 120
271 270 285
293
310
325
NetCase4 Aging time
(Min)
Cool
Medium
Warm
X
y
x
y
x
y
271
270
285
293
313
329
1
0-2
280 285 294
308
319
340
2
3-5
276 280 290 303 315 335
3
6-9
272 275 286 298 311 330
4
10-19
269 272 283 295 308 327
5
20-35
267 268 281 291 306 323
6
36-49
266 265 280 288 305 320
7
50-79
265 263 279 286 304 318
8
80-119
264 261 278 284 303 316
9
Over 120
264 260 278 283 303 315
Full White Pattern
CA-210
COLOR
ANALYZER
TYPE : CA-210
RS-232C Communication
V-Com
▲
V-COM ◄
►
▼
Press OK to Saver
160
- 13 -
* Auto-control interface and directions
(1) Adjust in the place where the influx of light like floodlight
around is blocked. (illumination is less than 10 lux).
(2) Adhere closely the Color analyzer(CA210) to the module
less than 10 cm distance, keep it with the surface 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 5 minutes.
- Using 'no signal' or 'POWER ONLY' or the others, check
the back light on.
▪ Auto adjustment Map(using RS-232C to USB cable)
RS-232C COMMAND
[CMD ID DATA]
Wb
00 00
White Balance Start
Wb
00 ff
White Balance End
<Caution>
Color Temperature : COOL, Medium, Warm.
One of R Gain/G Gain/ B Gain should be kept on 0xC0, and
adjust other two lower than C0.(When R/G/B Gain are all
C0, it is the FULL Dynamic Range of Module)
* Manual W/B process using adjust Remote control.
▪ After enter Service Mode by pushing "ADJ" key,
▪ Enter White Balance by pushing "►" key at "9. White
Balance".
* CASE Cool Mode
First adjust the coordinate far away from the target
value(x, y).B.
1) x, y > target
2) x, y < target
3) x >target, y < target
4) x < target, y > target
- Every 4 case have to fit y value by adjusting B Gain
and then fit x value by adjusting R-Gain.
- In this case, increasing/decreasing of B Gain and R
Gain can be adjusted.
How to adjust
1) In case G gain more than 172
Adjust R Gain and B Gain less than 192
2) if the G gain value be adjusted down to 172
One of the R/B Gain is 254
3) if G Gain is 172, More than one of R/B Gain is to be
between 192~254.
* CASE Medium / Warm
First adjust the coordinate far away from the target
value(x, y).
1) x, y > target
i) Decrease the R, G.
2) x, y < target
i) First decrease the B gain,
ii) Decrease the one of the others.
3) x > target, y < target
i) First decrease B, so make y a little more than the target.
ii) Adjust x value by decreasing the R
4) x < target, y > target
i) First decrease B, so make x a little more than the target.
ii) Adjust x value by decreasing the G
* After you finished all adjustments, Press "In-start" key and
compare Tool option and Area option value with its BOM, if
it is correctly same then unplug the AC cable. If it is not
same, then correct it same with BOM and unplug AC cable.
For correct it to the model's module from factory Jig model.
* Push the "IN STOP" key after completing the function
inspection. And Mechanical Power Switch must be set
“ON”.
4.3. Outgoing condition Configuration
■ When pressing IN-STOP key by SVC remocon, Red LED
are blinked alternatively. And then automatically turn off.
(Must not AC power OFF during blinking)
RS-232C COMMAND
[CMD ID DATA]
MIN
CENTER
(DEFAULT)
MAX
Cool
Mid
Warm
Cool Mid Warm
R Gain jg
Ja
jd
00
172
192 192
254
G Gain jh
Jb
je
00
172
192 192
192
B Gain ji
Jc
jf
00
192
192 172
254
R Cut
64
64
64
128
G Cut
64
64
64
128
B Cut
64
64
64
128
EZ ADJUST
0. Tool Option1
1. Tool Option2
2. Tool Option3
3. Tool Option4
4. Tool Option5
5. Tool Option Commercial
6. Country Group
7. Area Option
8. ADC Calibration
1. Tool Option2
2. Tool Option3
3. Tool Option4
4. Tool Option5
5. Tool Option Commercial
6. Country Group
7. Area Option
8. ADC Calibration
9. White Balance
10. 10 Point WB
11. Test Pattern
12 EDID D/L
13. Sub B/C
14. Ext. Input Adjust
11. Test Pattern
12 EDID D/L
13. Sub B/C
14. Ext. Input Adjust
Whit Balance
Color Temp.
◄
►
R-Gain
G-Gain
B-Gain
R-Cut
G-Cut
B-Cut
Test-Pattern
Backlight
Reset
G-Gain
B-Gain
R-Cut
G-Cut
B-Cut
Test-Pattern
Backlight
Reset
To Set
Cool
172
172
192
172
192
64
64
64
64
64
ON
100
- 14 -
5. HI-POT Test
5.1. HI-POT auto-check preparation
- Check the POWER cable and SIGNAL cable insertion condition
5.2. HI-POT auto-check
(1) Pallet moves in the station. (POWER CORD / AV CORD is
tightly inserted)
(2) Connect the AV JACK Tester.
(3) Controller (GWS103-4) on.
(4) HI-POT test (Auto)
- If Test is failed, Buzzer operates.
- If Test is passed, GOOD Lamp on and move to next proc-
ess automatically.
5.3. Checkpoint
(1) Test voltage
- Touchable Metal : 3 KV / min at 100 mA
- SIGNAL : 3 KV / min at 100 mA
(2) TEST time: 1 second. (case : mass production )
(3) TEST POINT
- Touchable Metal => LIVE & NEUTRAL : Touchable Metal.
- SIGNAL => LIVE & NEUTRAL : SIGNAL.
6. Model name & Serial number D/L
▪ Press "Power on" key of service remote control.
(Baud rate : 115200 bps)
▪ Connect RS232 Signal Cable to RS-232 Jack.
▪ Write Serial number
▪ Must check the serial number at the Diagnostics of SET UP menu.
(Refer to below).
6.1. Signal Table
CMD :
A0h
LENGTH : 85~94h (1~16 bytes)
ADH :
EEPROM Sub Address high (00~1F)
ADL :
EEPROM Sub Address low (00~FF)
Data :
Write data
CS :
CMD + LENGTH + ADH + ADL + Data_1 +...+ Data_n
Delay :
20ms
6.2. Command Set
* Description
FOS Default write : <7mode data> write
Vtotal, V_Frequency, Sync_Polarity, Htotal, Hstart, Vstart, 0,
Phase
Data write : Model Name and Serial Number write in EEPROM,.
6.3. Method & notice
(1) Serial number D/L is using of scan equipment.
(2) Setting of scan equipment operated by Manufacturing
Technology Group.
(3) Serial number D/L must be conformed when it is produced in
production line, because serial number D/L 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.
1) Press the "Instart" key of Adjustment remote control.
2) Go to the menu "6.Model Number D/L" like below photo.
3) Input the Factory model name(ex 32LN520B-ZA) or Serial
number like photo.
4) Check the model name Instart menu → Factory name displayed
(ex 32LN520B-ZA)
5) Check the Diagnostics (DTV country only) → Buyer model
displayed (ex 32LN520B-ZA)
CMD
LENGTH
ADH
ADL
DATA_1
. . .
Data_n
CS
DELAY
Adjust mode
CMD(hex)
LENGTH(hex)
Description
EEPROM WRITE
A0h
84h+n
n-bytes Write (n = 1~16)
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