DOWNLOAD LG 32LN549E (CHASSIS:LA3AA) Service Manual ↓ Size: 5.98 MB | Pages: 34 in PDF or view online for FREE

Model
32LN549E (CHASSIS:LA3AA)
Pages
34
Size
5.98 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
32ln549e-chassis-la3aa.pdf
Date

LG 32LN549E (CHASSIS:LA3AA) Service Manual ▷ View online

- 10 -
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-a)  Adjust  modes  (Cool)  :  Fix  the  G  gain  at  least  172  and 
change the others (R/B Gain).
 If R or B gain is over 255, G gain can be adjust below 172.
(4-b)  Adjust  two  modes  (  Medium  /  Warm)  :  Fix  the  one  of 
R/G/B gain to 192 (default data) and decrease the others
 CASE : Cool mode
First adjust the coordinate far away from the target value(x, y).
(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)  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 
- 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
32LN549E-UA ROW (LGD) 16452 18705
9873
29612 14342 1
711
39LN549E-UA POLA (LGD) 16454 18705 10001 29612 14342 7
711
42LN549E-UA ROW (LGD) 16455 18705
9873
29612 14342 1
711
47LN549E-UA ROW (LGD) 16456 18705
9873
29612 14342 3
711
55LN549E-UA POLA (LGD) 16458 18705 10001 29612 14342 1
711
 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 
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