DOWNLOAD LG 42LN5400 (CHASSIS:LJ36B) Service Manual ↓ Size: 9.84 MB | Pages: 77 in PDF or view online for FREE

Model
42LN5400 (CHASSIS:LJ36B)
Pages
77
Size
9.84 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
42ln5400-chassis-lj36b.pdf
Date

LG 42LN5400 (CHASSIS:LJ36B) Service Manual ▷ View online

- 10 -
ADJUSTMENT INSTRUCTION
1. Application
This  spec  sheet  is  applied  all  of  the  LED  TV  with  LJ36B 
chassis
2. Designation
(1)  The  adjustment  is  according  to  the  order  which  is 
designated  and  which  must  be  followed,  according  to  the 
plan whic al Unit: Product Specification Standard.
(2) Power adjustment : Free Voltage.
(3) Magnetic Field Condition: Nil.
(4) Input signal Unit: Product Specification Standard.
(5)  Reserve after operation: Above 5 Minutes (Heat Run).
     Temperature : at 25 ºC±5 ºC
     Relative humidity : 65 ± 10%
     Input voltage : 100~220V, 50/60Hz
(6)  Adjustment  equipments  :  Color  Analyzer  (CA-210  or 
CA-110), SVC remote controller
(7) Push The “IN STOP KEY” – For memory initialization.
 
3. Main PCB check process
* APC – After Manual-Insert, executing APC
* Boot file Download 
(1)  Execute  ISP  program  “Mstar  ISP  Utility”  and  then  click 
“Config” tab.
(2)   Set as below, and then click “Auto Detect” and check “OK” 
message. 
      If  “Error”  is  displayed,  Check  connection  between 
computer, jig, and set.
(3)  Click  “Read”  tab,  and  then  load  download  file  (XXXX.bin) 
by clicking “Read”
(4)  Click  “Connect”  tab.    If  “Can’t  ”  is  displayed,  Check 
connection between computer, jig, and set.
(5) Click “Auto” tab and set as below.
(6) Click “Run”.
(7) After downloading, check “OK” message. 
 
(1) 
 
filexxx.bin
 
(2) 
(3) 
Please Check the Speed  
To use speed between 
from 200KHz to 400KHz 
 
(4) 
(5)
(6)
(7)...........OK
filexxx.bin
Case1 : Software version up
1)  After  downloading  S/W  by  USB  ,  TV  set  will  reboot 
automatically
2) Push “In-stop” key
3) Push “Power on” key
4) Function inspection
5) After function inspection, Push “In-stop” key.
Case2 : Function check at the assembly line
1)  When  TV  set  is  entering  on  the  assembly  line,  Push 
“In-stop” key at first.
2) Push “Power on” key for turning it on.
 =>  If you push “Power on” key, TV set will recover channel 
information by itself.
3).After function inspection, Push “In-stop” key.
- 11 -
* USB DOWNLOAD(*.epk file download)
(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,  have  to  adjust  Tool 
Option 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) Completed selecting Tool option.
Model
Module
Tool 
option1
Tool 
option2
Tool 
option3
Tool 
option4
Tool 
option5
Tool 
option6
32LA615B-SC
LGD
52
2440
32669
13576
43012
97
42LA6150-
SC
LGD
55
2440
32669 13576 43012
97
47LA6150-
SC
LGD
56
2440
32669 13576 43012
97
32LN540B-
SB/SA
LGD
20
2440
16281 13576 43012
17
32LN5400-
SH/SA
LGD
20
2440
16281 13576 43012
17
39LN5400-
SB/SA
CMI
2070
2440
16281 13576 43012
17
39LN5400-
SB/SA
AUO
4118
2440
16281 13576 43012
17
42LN5400-
SB/SA
LGD
23
2440
16281 13576 43012
17
42LN5400-
SB/SA
AUO
4119
2440
16281 13576 43012
17
47LN5400-
SB/SA
LGD
24
2440
16281 13576 43012
17
50LN5400-
SB/SA
LGD
25
2440
16281 13576 43012
17
55LN5400-
SB/SA
POLA
26
2440
16281 13576 43012
17
* RS-232C Connection Method
Connection :  PCBA  (USB  Port)  ->  USB  to  Serial  Adapter 
(UC-232A) -> RS-232C cable -> PC(RS-232C port) 
▪ Product name of USB to Serial Adapter is UC-232A.
 Caution:  LJ31* chassis support only UC-232A driver. (only use 
this one. )  
- 12 -
4. Total Assembly line process
4.1. Adjustment Preparation
■ W/B Equipment condition
    CA210 :  CH14, Test signal : Inner pattern (80IRE) – in case of 
LED back light
■  Above 5 minutes H/run in the inner pattern. (“power on” key of 
adjust remote control)
► The spec of color temperature and coordinate
Model
Mode
Color Temp
Color coordinate
Remark
All
Cool (C50)
13,000k
x = 0.271 (±0.002)
y = 0.270 (±0.002)
 Test signal
 - Inner pattern for W/B adjust
 - External white pattern
   (80IRE, 204gray)
Medium (0)
9,300k
x = 0.286 (±0.002)
y = 0.289 (±0.002)
Warm (W50)
6,500k
x = 0.313 (±0.002)
y = 0.329 (±0.002)
► CA210 : CH 14, Test signal : Inner pattern (80IRE)
-  Standard  color  coordinate  and  temperature  using  CA-1000  (by 
H/R time)
▪ Normal line
model:  (normal line)LN5xxx, LA6xxx, LA7xxx, LA8xxx 
H/R Time(Min)
Cool
Medium
Warm
x
y
x
x
y
x
271
270
286
289
313
329
1
0-2
283 
287 
298 
306 
322
342
2
3-5
282 
285 
297 
304 
321
340
3
6-9
281 
284 
296 
303 
320
339
4
10-19
279 
281 
294 
300 
318
336
5
20-35
277 
277 
292 
296 
316
332
6
36-49
275 
274 
290 
293 
314
329
7
50-79
273 
272 
288 
291 
312
327
8
80-119
272 
271 
287 
290 
311
326
9
Over 120
271 
270 
286 
289 
310
325
▪ Aging chamber line
model:  (aging chamber)LN5xxx, LA6xxx, LA7xxx, LA8xxx
H/R Time(Min)
Cool
Medium
Warm
x
y
x
x
y
x
271
270
286
289
313
329
1
0-5
282 
285 
297 
304 
321
340
2
6-10
278 
280 
293 
299 
317 
335 
3
11-20
275 
275 
290 
294 
314 
330 
4
21-30
272 
272 
287 
291 
311 
327 
5
31-40
269 
269 
284 
288 
308 
324 
6
41-50
268 
267 
283 
286 
307 
322 
7
51-80
267 
266 
282 
285 
306 
321 
8
81-119
266 
264 
281 
283 
305 
319 
9
Over 120
265 
263 
280 
282 
304 
318 
  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 POWER-ON -> Enter 
the mode of White-Balance, the pattern will come out.
 Auto-control interface and directions
(1)  Adjust  in  the  place  where  the  influx  of  light  like  floodlight 
around is blocked. (Illumination is less than 10ux).
(2)  Adhere closely  the Color Analyzer ( CA210 ) to the module 
less  than  10cm  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 ‘full white pattern’ or the others, check 
the back light on.
● Auto adjustment Map(RS-232C)
   RS-232C COMMAND
   [ CMD    ID    DATA ]    
       Wb     00       00       White Balance Start
       Wb     00       ff        White Balance End  
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
192
G Gain
jh
Jb
je
00
172
192
192
192
B Gain
ji
Jc
jf
00
192
192
172
192
R Cut
64
64
64
128
G Cut
64
64
64
128
B Cut
64
64
64
128
- 13 -
*Manual W/B process using adjusts Remote control.(TBD)
■  Color  analyzer(CA100+,  CA210)  should  be  used  in  the 
calibrated ch by CS-1000
■  Operate  the  zero-calibration  of  the  CA100+  or  CA-210,  then 
stick sensor to the module when adjusting.
■  After enter Service Mode by pushing “ADJ” key,
■Enter White Balance by pushing “►” key at “8. White Balance”.
■  For  manual  adjustment,  it  is  also  possible  by  the  following 
sequence.
(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  ->  8.  White-
Balance  then  press  the  cursor  to  the  right  (KEY►).  When 
KEY(►) is pressed 206 Gray internal pattern will be displayed.
(4) Adjust Cool modes
   (i).  Fix the one of R/G/B gain to 192 (default data) and decrease 
the others
        (If G gain is adjusted over 172 and R and B gain less than 
192, increase G gain to 192 and increase R gain and B gain 
same amount of increasing G gain.)
   (ii). If G gain is less than 172,
        Increase G gain by up to 172, and then increase R gain and 
G gain same amount of increasing G gain.
   (iii). If R gain or B gain is over 255,
        Readjust G gain less than 172, Conform to R gain is 255 or B 
gain is 255 
(5)  Adjust two modes (Medium / Warm) Fix the one of R/G/B gain 
to 192 (default data) and decrease the others. 
(6)  Adj.  is  completed,  Exit  adjust  mode  using  “EXIT”  key  on 
Remote controller.
▪  If internal pattern is not available, use RF input. In EZ Adj. menu 
8.  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 206 Gray pattern.
 
  CASE Cool 
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) If G gain is adjusted over 172 and R gain and B gain less 
than 192 , Adjust is O.K. 
   (2) If G gain is less than 172 , increase G gain by up to 172, 
and then increase R gain and B gain same amount of increasing 
G gain. 
   (3) If R gain or B gain is over 255 , Readjust G gain less than 
172, Conform to R gain is 255 or B gain is 255 
 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  finish  all  adjustments,  Press  “In-start”  button  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.
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