LG 32LN541C (CHASSIS:LA3AA) Service Manual ▷ View online
- 11 -
5.1.6. Reference
(White Balance Adj. coordinate and color
temperature)
▪ Luminance: 204 Gray, 80IRE
▪ Normal line
model: (normal line)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
271
270
286
289
314
318
1
0-2
281
287
296
306
321
331
2
3-5
280
285
295
304
320
329
3
6-9
278
284
293
303
318
328
4
10-19
276
281
291
300
316
325
5
20-35
275
277
290
296
315
321
6
36-49
274
274
289
293
314
318
7
50-79
273
272
288
291
313
316
8
80-119
272
271
287
290
312
315
9
Over 120
271
270
286
289
311
314
▪ 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
271
270
286
289
314
318
1
0-5
283
292
298
311
323
336
2
6-10
282
290
297
309
322
334
3
11-20
280
288
295
307
320
332
4
21-30
277
284
292
303
317
328
5
31-40
275
279
290
298
315
323
6
41-50
274
275
289
294
314
319
7
51-80
273
272
288
291
313
316
8
81-119
272
271
287
290
312
315
9
Over 120
271
270
286
289
311
314
(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
271
270
286
289
314
318
1
0-5
280
285
295
304
320
329
2
6-10
276
280
291
299
316
324
3
11-20
272
275
287
294
312
319
4
21-30
269
272
284
291
309
316
5
31-40
267
268
282
287
307
312
6
41-50
266
265
281
284
306
309
7
51-80
265
263
280
282
305
307
8
81-119
264
261
279
280
304
305
9
Over 120
264
260
279
279
304
304
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: LA3AA 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
5.2.3. Tool Option inspection
▪ Press Adj. key on the Adj. R/C, then select Tool option
Model
Module
Tool 1
Tool 2
Tool 3
Tool 4
Tool 5
Tool 6 Commercial
32LN541C-UA ROW (LGD) 16452
2321
9873
29612 14340 1
71
39LN541C-UA POLA (LGD)
42LN541C-UA ROW (LGD) 16455
42LN541C-UA ROW (LGD) 16455
2321
9873
29612 14340 1
71
47LN541C-UA ROW (LGD) 16456
2321
9873
29612 14340 1
71
55LN541C-UA POLA (LGD) 16458
2321
10001 29612 14340 1
71
※
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
- 12 -
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)
(3) 32/37/42/47/55
INCH
2
Audio practical
max Output, L/R
(Distortion=10%
max Output)
4.5
6.0
5.2
6.45
6.24
7.07
W
Vrms
(1) Measurement
condition
- EQ/AVL/Clear
Voice: Off
(2) Speaker
(8Ω Impedance)
(3) 26 INCH
* 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.)
- 13 -
7. Test factor for commercial model
7.1. RJP TEST (Only US model)
7.1.1. Overview
▪ Jig(Commercial Check JIG)
▪ RJ45 cable
▪ Power only mode
7.1.2. Test sequence
(1) Operate JIG(Commercial Check JIG) as shown on picture1
(2) Turn on TV and press “P-ONLY” key on adjustment
remocon.
(3) Connect RJ45 cable into RJP port of the TV set.
(4) Connect RJ45 cable into the JIG.
(5) If shown “OK” it’s normal, “NG” it’s defect.
(6) If defect, check the connection once again as done above.
(7) If the signal power is no good, check the connection of RF
cable.
8. External Speaker Out
(1) Connect external speaker to speaker out port with phone
jack on TV side as below
(2) Check the Max. speaker output is 1W or not. Sine wave
with 1KHz will be displayed
(3) Check Both of the signal in speaker.
(Power only mode -> Fived 1W Default)
-> Check the input signal(1KHZ, Sine wave) and the wave
of output by utilizing oscilloscope
RJP port
Recommended Input Signal
: RF, 1kHz, Sine wave
: RF, 1kHz, Sine wave
- 14 -
TROUBLE SHOOTING
1. Power-up boot check
Check stand-by Voltage.
P401 3, 5pin : +3.5V_ST
Check 18pin Power connector
M ain B/D 3.5V Line
Short Check
Check X201 clock
24 M Hz
Replace X201
Check P401 PWR_ON.
1pin : 3.3V
Replace M star(IC101) or M ain board
Check M ulti Voltage
P401 9, 10pin : 24V
/ 13, 14, 15pin:12V
Replace Power Board
Check DRV ON Control
P401 2 pin : High
Check Power Board
Check IC402/3/7 Output Voltage
IC402 : 2.5V
IC403 : 1.15V
IC404 : 1.5V
Q408 : 3.3V
Replace IC402, IC403, IC404, Q408
Re-download software.
Check stand-by Voltage
L402, L403 : +3.5V
Replace L402, L403
Check LVDS Power Voltage
Q406 : 12V
Replace Q406
Check M star LVDS Output
Replace M star(IC101) or M ain Board
Change M odule
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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