LG 55LS675H (CHASSIS:LA2AG) Service Manual ▷ View online
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6.1.5. Adjustment method
6.1.5.1 Auto adj. method
(1) Set TV in adj. mode using POWER ONLY (P-ONLY) 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 adj.
(5) When adj. is completed (OK Sing), check adj. status of pre
mode (Cool, Medium, Warm)
(6) Remove probe and RS-232C cable to complete adj.
▪ W/B Adj. must begin as start command “wb 00 00” , and
finish as end command “wb 00 ff”, and Adj. offset if need
6.1.5.2. 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.
▪ If internal pattern is not available, use RF input. In EZ Adj.
menu 6.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 204 Gray pattern.
▪ 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 10cm 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.
6.1.6. Reference (White Balance Adj. coordinate and
color temperature)
▪ Luminance: 204 Gray, 80IRE
** LGD Module (over 26inch)
▪ Standard color coordinate and temperature using
CA-210(CH 14)
Mode
Coordinate
Temp
△
uv
Remark
X
Y
Cool
0.269±0.002
0.273±0.002 13,000K 0.0000 55LS675H-UA
Medium 0.285±0.002
0.293±0.002
9,300K
0.0000
Warm
0.313±0.002
0.329±0.002
6,500K
0.0000
▪ Standard color coordinate and temperature using
CA-210(CH 14)
Mode
Coordinate
Temp
△
uv
X
Y
Cool
0.269±0.002
0.273±0.002 13,000K 0.0000
Medium 0.285±0.002
0.293±0.002
9,300K
0.0000
Warm
0.313±0.002
0.329±0.002
6,500K
0.0000
▪ Standard color coordinate and temperature using
CA-210(CH 14) – by aging time
(1) Edge LED models (applied only LGD Module) in LGERS
GP3
Aging time
(Min)
Cool
Medium
Warm
X
Y
X
Y
X
Y
269
273
285
293
313
329
1
0-2
279
288
295
308
319
338
2
3-5
278
286
294
306
318
336
3
6-9
277
285
293
305
317
335
4
10-19
276
283
292
303
316
333
5
20-35
274
280
290
300
314
330
6
36-49
272
277
288
297
312
327
7
50-79
271
275
287
295
311
325
8
80-149
270
274
286
294
310
324
9
Over 150
269
273
285
293
309
323
(2) Edge LED models (applied only LGD Module) in LGEKR
(GUMI) (wintertime)
GP3
Aging time
(Min)
Cool
Medium
Warm
X
Y
X
Y
X
Y
269
273
285
293
313
329
1
0-2
281
293
297
313
321
343
2
3-5
280
290
296
310
320
340
3
6-9
279
289
295
309
319
339
4
10-19
277
286
293
306
317
333
5
20-35
275
282
291
302
315
332
6
36-49
273
278
289
298
313
328
7
50-79
271
276
287
296
311
326
8
80-149
270
274
286
294
310
324
9
Over 150
269
273
285
293
309
323
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6.2. Option selection per country
6.2.1. Overview
America due to rating
(2) Applied model: LA2AG Chassis is applied in USA
6.2.2. Method
(1) Press ADJ key on the Adj. R/C, and 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
6.2.3. Tool Option inspection
▪ Press Adj. key on the Adj. R/C, then select Tool option.
Model
Tool 1
Tool 2 Tool 3 Tool 4 Tool 5 COM-
MERCIAL
OPTION
55LS675H-UA
33209
2338
9489 17324 2052
1618
LGD
6.2.4. 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
7. GND and HI-POT Test
7.1. GND & HI-POT auto-check preparation
(1) Check the POWER CABLE and SIGNAL CABE insertion
condition
7.2. 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.
7.3. 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
8. AUDIO output check
8.1. Audio input condition
(1) RF input: Mono, 1KHz sine wave signal, 100% Modulation
(2) CVBS, Component: 1KHz sine wave signal (0.4Vrms)
(3) RGB PC: 1KHz sine wave signal (0.7Vrms)
8.2. Specification
● Measurement condition:
(1) RF input: Mono, 1KHz sine wave signal, 100% Modulation
(2) CVBS, Component: 1KHz sine wave signal 0.4Vrms
(3) RGB PC: 1KHz sine wave signal 0.7Vrms
9. USB S/W Download
(optional, 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 lower
than that of TV set, it didn’t work. Otherwise USB data is
automatically detected.
(3) Show the message “Copying files from memory”
(5) Updating Completed, The TV will restart automatically
(6) If your TV is turned on, check your updated version and
Tool option.
* If downloading version is more high 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.)
(4) Updating is staring.
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10. Conditions ST_BY Consumption
Power
- Have to turn-off ST_BY Light
- USA 110V / 60Hz, KOREA 220V / 60Hz
(Menu -> Option -> Power Indicator -> ST_BY Light : OFF)
11. Test factor for commercial model
11.1. RJP TEST
{Picture1}
11.1.1. Overview
▪ Jig(Commercial Check JIG)
▪ Power only mode
11.1.2. Test sequence
(1) Connect the adapter to the Commercial check Jig for
supplying voltage
(2) Turn on the TV and fix the channel to 96-1
(3) Adjust each switch on left side to; adapter and 5V
(4) Turn on JIG pin No. 5. as picture 1
(5) Press the P-ONLY key for Encryption channel check
(6) Press the EXIT key
(7) Check to confirm the encryption channel
(8) Connect the LAN Cable
(9) Check “RJP TEST : OK” message.
12. 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.
(only Power -> Fived 1W Default)
-> Check the input signal(1KHZ, Sine wave) and the wave
of output by utilizing oscilloscope.
Recommended Input Signal
: RF, 1kHz, Sine wave
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13. LAN Main board Check
13.1. Overview
It is LNET RF modem & FTG card
13.2. Equipment
(1) b_LAN Checker: UTC-1000 (with Cable accessory)
(2) Computer(for test result monitoring)
(3) Connection JIG
13.3. Equipment connection map & b_LAN
Check
13.4. Check
13.4.1. Setting Procedure
13.4.1.1. Setting JIG
(1) Connect UTC-1000 Equipment to JIG device as a like left
picture
- Connection Line:
UTC-1000 TOP1<- ->Game port(RJ21)
-> TV-LINK CFG (Phone Jack)
UTC-1000 TOP2<- ->JIG 11pin Connection
UTC-1000 RF1<- ->b_LAN RF IN
UTC-1000 LAN<- ->PC LAN Port
13.4.1.2. Working procedure
(1) Connection
UTC-1000 LAN <- -> PC LAN Port
UTC-1000 TOP1 <- -> Game port(RJ21)
-> TV-LINK CFG (Phone Jack)
UTC-1000 RF1 <- -> b_LAN RF IN
(2) Power on JIG : Switch on front of the JIG
(3) Test Start
UTC-1000 TOP2 <- -> JIG 11pin Connection
(4) Checking b-LAN MAC Address
Check whether it is same their address numbers or not
between B-LAN Label and on the pc address numbers.
● Checking JIG contents
(1) Check whether displaying all “Pass” or not at the number
3.4.6.7.9 contents of UTC-1000 on the PC
(2) Check “Version 6.0” of the 1. b_LAN Application version
(3) Check whether it is same their address numbers or not
between B-LAN Label and
(4) MAC Address on the pc.
14. Serial number download
Connect Bar Code scan equipment and TV set by RS-232C
cable
(1) E2PROM Data Write
(2) E2PROM Data Read
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