LG 39LN5300 (CHASSIS:LA32B) Service Manual ▷ View online
- 13 -
5.1.3. Equipment connection
5.1.4. Adjustment Command (Protocol)
(1) RS-232C Command used during auto-adj
RS-232C COMMAND
Explanation
CMD
DATA
ID
Wb
00
00
Begin White Balance adj.
Wb
00
ff
End White Balance adj.
(internal pattern disappears )
(2) Adjustment Map
Adj. item
Command
(lower case ASCII)
Data Range
(Hex.)
Default
(Decimal)
CMD1
CMD2
MIN
MAX
Cool
R Gain
j
g
00
C0
172
G Gain
j
h
00
C0
172
B Gain
j
i
00
C0
192
R Cut
128
G Cut
128
B Cut
128
Medium
R Gain
j
a
00
C0
192
G Gain
j
b
00
C0
192
B Gain
j
c
00
C0
192
R Cut
128
G Cut
128
B Cut
128
Warm
R Gain
j
d
00
C0
192
G Gain
j
e
00
C0
192
B Gain
j
f
00
C0
172
R Cut
128
G Cut
128
B Cut
128
5.1.5. Adjustment method
5.1.5.1. Auto WB calibration
(1) Set TV in ADJ mode using P-ONLY key (or POWER ON
key)
(2) Place optical probe on the center of the display
- It need to check probe condition of zero calibration before
adjustment.
(3) Connect RS-232C Cable
(4) Select mode in ADJ Program and begin a adjustment.
(5) When WB adjustment is completed with OK message,
check adjustment status of pre-set mode (Cool, Medium,
Warm)
(6) Remove probe and RS-232C cable.
※
※
W/B Adj. must begin as start command “wb 00 00” , and
finish as end command “wb 00 ff”, and Adj. offset if need.
5.1.5.2. 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 -> 6. White-
Balance then press the cursor to the right (KEY►).
(When KEY(►) is pressed 204 Gray(80IRE) 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.
※
CASE
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
► How to adjust
(1) Fix G gain at least 172
Adjust R, B Gain (In Case of Mostly Blue Gain Saturation)
(2) When R or B Gain > 255, Release Fixed G Gain and
Readjust
※
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
Color Analyzer
Computer
Pattern Generator
※
Signal Source
Probe
RS-232C
RS-232C
RS-232C
※
If TV internal pattern is used, not needed
- 14 -
5.1.6. Reference
(White Balance Adj. coordinate and color
temperature)
▪ Luminance: 204 Gray, 80IRE
▪ Normal line
model: (normal line)LN5xxx, LA6xxx, LA7xxx, LA8xxx
H/R Time(Min)
Cool
Medium
Warm
x
y
x
x
y
x
269
273
285
293
313
329
1
0-2
281
290
297
310
322
342
2
3-5
280
288
296
308
321
340
3
6-9
279
287
295
307
320
339
4
10-19
277
284
293
304
318
336
5
20-35
275
280
291
300
316
332
6
36-49
273
277
289
297
314
329
7
50-79
271
275
287
295
312
327
8
80-119
270
274
286
294
311
326
9
Over 120
269
273
285
293
310
325
▪ Aging chamber line
(Aging chamber) Model : LN5xxx, LA6xxx, LA7xxx, LA8xxx
▪ Standard color coordinate and temperature using
CA-210(CH-14) – by aging time
H/R Time(Min)
Cool
Medium
Warm
x
y
x
x
y
x
269
273
285
293
313
329
1
0-5
280
288
296
308
321
340
2
6-10
276
283
292
303
317
335
3
11-20
273
278
289
298
314
330
4
21-30
270
275
286
295
311
327
5
31-40
267
272
283
292
308
324
6
41-50
266
270
282
290
307
322
7
51-80
265
269
281
289
306
321
8
81-119
264
267
280
287
305
319
9
Over 120
263
266
279
286
304
318
5.2. Option selection per country
5.2.1. Overview
(1) Tool option selection is only done for models in Non-USA
(2) Applied model: LA32B Chassis applied to CANADA and
MEXICO
5.2.2. Country Group selection
(1) Press ADJ key on the Adj. R/C, and then select Country
Group Menu
(2) Depending on destination, select US, then on the lower
Country option, select US, CA, MX.
Selection is done using +, - KEY
(3) Using DFT(Auto)
※
※
PC (for communication through RS-232C) -> UART Baud
rate : 115200 bps
Command : ah 00 00 DATA(Area Number(hexadecimal))
ITEM
DATA(Area Number)
AREA
AREA OPTION1
0
USA
1
CANADA
2
MEXICO
5.2.3. Tool Option inspection
▪ Press Adj. key on the Adj. R/C, then select Tool option
Model
Module
Tool
option1
Tool
option2
Tool
option3
Tool
option4
32LN5300-UB
LGD
545
41478
24716
24832
32LN530B-UA
LGD
545
45574
24716
4352
32LN530B-UA
LGD(POLA)
529
45574
24716
4352
32LN530B-UA CSOT(POLA)
12817
45574
24716
4352
32LN536B-UB
LGD(POA)
39LN5300-UB
CMI(POLA)
5137
41478
24716
256
39LN5300-UB
AUO(POLA)
9233
41478
24716
256
42LN5300-UB
LGD
1313
41478
24716
256
42LN5300-UB
LGD(POLA)
1297
41478
24716
256
42LN5300-UB
AUO(POLA)
9489
41478
24716
256
42LN5400-UA
LGD
1313
33286
24716
37120
47LN5400-UA
LGD
1569
33286
24716
55552
50LN5400-UA
LGD
1825
33286
24716
49408
50LN5400-UA
CMI(POLA)
5905
33286
24716
49408
55LN5400-UA
LGD(POLA)
2065
33286
24716
45312
※
Tool option can be reconstructed by Software
5.3. 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
- 15 -
6. GND and HI-POT Test
6.1. GND & HI-POT auto-check preparation
(1) Check the POWER CABLE and SIGNAL CABE insertion
condition
6.2. GND & 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) GND Test (Auto)
- If Test is failed, Buzzer operates.
- If Test is passed, execute next process (Hi-pot test).
(Remove A/V CORD from A/V JACK BOX)
(5) HI-POT test (Auto)
- If Test is failed, Buzzer operates.
- If Test is passed, GOOD Lamp on and move to next
process automatically
6.3. Checkpoint
(1) Test voltage
- GND: 1.5KV/min at 100mA
- SIGNAL: 3KV/min at 100mA
(2) TEST time: 1 second
(3) TEST POINT
- GND Test = POWER CORD GND and SIGNAL CABLE
GND.
- Hi-pot Test = POWER CORD GND and LIVE & NEUTRAL.
(4) LEAKAGE CURRENT: At 0.5mArms
7. AUDIO output check
7.1. Audio input condition
(1) RF input: Mono, 1KHz sine wave signal, 100% Modulation
(2) CVBS, Component: 1KHz sine wave signal (0.4Vrms)
7.2. Specification
No
Item
Min
Typ
Max
Unit
Remark
1
Audio practical
max Output, L/R
(Distortion=10%
max Output)
9.0
8.5
10.9
9.3
12.0
9.8
W
Vrms
(1) Measurement
condition
- EQ/AVL/Clear
Voice: Off
(2) Speaker
(8Ω Impedance)
* USB S/W Download (option, Service only)
(1) Put the USB Stick to the USB socket.
(2) Automatically detecting update file in USB Stick.
- If your downloaded program version in USB Stick is Low,
it didn't work. But your downloaded version is High, USB
data is automatically detecting
(3) Show the message "Copying files from memory"
(4) Updating is staring.
(5) After updating is complete, The TV will restart automatically.
(6) If TV turns on, check your updated version and Tool option.
(refer to the next page about tool option)
* If downloading version is higher than your TV have, TV
can lost all channel data. In this case, you have to
channel recover. If all channel data is cleared, you didn't
have a DTV/ATV test on production line.
※
After downloading, TOOL OPTION setting is needed again.
(1) Push "IN-START" key in service remote controller.
(2) Select "Tool Option 1" and Push “OK” button.
(3) Punch in the number. (Each model has their number.)
- 16 -
TROUBLE SHOOTING
1. Power-up boot check
Check stand-by Voltage.
P401 3, 5pin : +3.5V_ST
Check 18pin Power connector
Main B/D 3.5V Line
Short Check
Check X201 clock
24 MHz
Replace X201
Check P401 PWR_ON.
1pin : 3.3V
Replace Mstar(IC101) or Main board
Check Multi Voltage
P401 9, 10pin : 24V
/ 13, 14, 15pin:12V
Replace Power Board
Check DRV ON Control
P403 2 pin : High
Check Power Board
Check IC402/3/7 Output Voltage
IC402 : 2.5V
IC403 : 1.15V
IC407 : 1.5V
Q403 : 3.3V
Replace IC402, IC403, IC407, Q403
Re-download software.
Check stand-by Voltage
L404, L408 : +3.5V
Replace L404, L408
Check LVDS Power Voltage
Q409 : 12V
Replace Q409
Check Mstar LVDS Output
Replace Mstar(IC101) or Main Board
Change Module
ok
ok
ok
ok
ok
ok
ok
ok
ok
No
No
ok
Replace Power board.
ok
No
No
No
No
No
No
No
No
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