DOWNLOAD LG 55LN5700 (CHASSIS:LT33B) Service Manual ↓ Size: 9.08 MB | Pages: 97 in PDF or view online for FREE

Model
55LN5700 (CHASSIS:LT33B)
Pages
97
Size
9.08 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
55ln5700-chassis-lt33b.pdf
Date

LG 55LN5700 (CHASSIS:LT33B) Service Manual ▷ View online

- 21 -
● 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 “P-ONLY” key on remote controller 
and then operate heat run longer than 15 minutes.  
     (If  not  executed  this  step,  the  condition  for  W/B  may  be 
different.)
(2) Push “Exit” key.
(3)  Enter White Balance mode by pushing the ADJ key and select 
“8.  White  Balance”.  When  KEY  (►)  is  pressed,  206  Gray 
internal pattern will be displayed. 
(4)  Zero  Calibrate  the  probe  of  Color Analyzer,  then  place  it  on 
the center of LCD module within 10cm of the surface
(5)  Select each items (Red/Green/Blue Gain) using ▲/▼(CH +/-) 
key on R/C..
(6) Adjust R/ G/ B Gain using ◄/►(VOL +/-) key on R/C.
(7)  Adjust three modes all (Cool / Medium / Warm) -Fix the one of 
R/G/B gain and change the others
(8)  When  adjustment  is  completed,  exit  adjustment  mode  using 
EXIT key on R/C.
 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
  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.
● RS-232C Command (Commonly apply) 
RS-232C COMMAND
Explanation
CMD
DATA
ID
wb
00
00
White Balance adjustment start
Wb
00
10
Start of adjust gain (Inner white pattern)
wb
00
1f
End of gain adjust
wb
00
20
Start of offset adjust(Inner white pattern)
wb
00
2f
End of offset adjust
wb
00
ff
End of White Balance adjust
(Inner pattern disappeared)
▪ “wb 00 00”: Start Auto-adjustment of white balance.
▪ “wb 00 10”: Start Gain Adjustment (Inner pattern) 
▪ “jb 00 c0” : 
▪ …
▪ “wb 00 1f”: End of Adjustment
* If it needs, offset adjustment (wb 00 20-start, wb 00 2f-end)
▪  “wb  00  ff”:  End  of  white  balance  adjustment  (inner  pattern 
disappear)
 Notice) Adjustment Mapping information
RS-232C COMMAND
[CMD ID DATA]
MIN
CENTER
(DEFAULT)
MAX
Cool
Mid
Warm 00
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
192
192
172
192
R Gain
64
64
64
128
G Gain
64
64
64
128
B Gain
64
64
64
128
5.3. Magic Motion remote controller Check
5.3.1 Test equipment
-  RF-remote  controller  for  check,  IR-KEY-CODE  remote 
controller.
-  Check AA  battery  before  test. A  recommendation  is  that  a 
tester change battery every lots.
5.3.2. Test
(1)  Make pairing with TV set by pressing “Mute (START) key” 
on RCU.
(2)  Check  a  cursor  on  screen  by  pressing  ‘ENTER”  or  “OK” 
key of RCU
(3) Stop paring with TV set by pressing “VOL+ (STOP) key.
- 22 -
5.4. 3D pattern test  
5.4.1. Test equipment
(1)  Pattern  Generator  MSHG-600  or  MSPG-6100  (HDMI  1.4 
support)
(2) Pattern: HDMI mode (model No. 872, pattern No. 83)
5.4.2. Test method
(1) Input 3D test signal as Fig.1.
(2) Press ‘OK” key as a 3D input OSD is shown.
(3)  Check  pattern  as  Fig2  without  3D  glasses.  (3D  mode 
without 3D glasses)
            Fig.2   
 
 
 
                Fig.3
<OK in 3D mode without 3D glasses>         <NG in 3D mode without 3D glasses>
5.5. HDMI ARC Function Inspection  
5.5.1. Test equipment
- Optic Receiver Speaker          
- MSHG-600 (SW: 1220 ↑) 
- HDMI Cable (for 1.4 version)
5.5.2. Test method
(1)  Insert  the  HDMI  Cable  to  the  HDMI ARC  port  from  the 
master equipment (HDMI1)
(2) Check the sound from the TV Set
(3)  Check  the  Sound  from  the  Speaker  or  using AV  &  Optic 
TEST program (It’s connected to MSHG-600)
* Remark:  Inspect in Power Only Mode and check SW version 
in a master equipment
5.6. Selection of Country option  
model  (Not  allowed  Korean  model).  It  is  selection  of  Country 
about Rating and Time Zone.
▪  Models: All  models  which  use  LJ22E  Chassis  (See  the  first 
page.) 
▪  Press  “In-Start”  button  of  Service  Remocon,  then  enter  the 
“Option” Menu with “PIP CH-“ Button 
▪  Select one of these three (USA, CANADA, MEXICO) defends 
on its market using “Vol. +/-“button.
- 23 -
5.7. MHL Test  
Step 1) Turn on TV
Step 2) Select HDMI4 mode using input Menu.
Step 3)  Set  MHL  Zig(M1S0D3617)  using  MHL  input,  output 
and power code.
Step 4)  Connect  HDMI  cable  between  MHL  Zig  and  HDMI4 
port.
Step 5) Check LED light of Zig and Module of Set
Result)  If,  The  LED  light  is  green  and  The  Module  shows 
normal stream -> OK
Else -> NG
 Caution :  Don’t push The INSTOP KEY after completing the 
function inspection.
6. GND and HI-POT Testing
6.1.  GND & HI-POT auto-check preparation 
Check the connection between set and 
power cord
(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. Check Point
(1) Test voltage
3 Poles : GND:  1.5KV/min  at  100mA  /  SIGNAL:  3KV/min  at 
100mA
(2) TEST time: 1 second
(3) TEST POINT
3 Poles :  GND  Test  =  POWER  CORD  GND  and  SIGNAL 
CABLE GND.
Hi-pot Test = POWER CORD GND and LIVE & NEUTRAL.
(4)  LEAKAGE CURRENT: At 0.5mArms
- 24 -
7. Default Service option
7.1. ADC-Set
▪ R-Gain adjustment Value (default  128)
▪ G-Gain adjustment Value (default  128)
▪ B-Gain adjustment Value (default  128)
▪ R-Offset adjustment Value (default  128)
▪ G-Offset adjustment Value (default  128)
▪ B-Offset adjustment Value (default  128)
7.2. White balance. Value
CENTER (DEFAULT)
C50
0
W50
R Gain
192
192
192
G Gain
192
192
192
B Gain
192
192
192
R Cut
64 
64
64  
G Cut
64
64
64
B Cut
64
64
64
8. USB DOWNLOAD (*.epk file download) 
(1) Put the USB Stick to the USB socket
(2) Press Menu key, and move OPTION
(3)
(4) Press “FAV” Press 7 times.
(5) Select download file (epk file)
(6) After download is finished, remove the USB stick.
(7)  Press  “IN-START”  key  of ADJ  remote  control,  check  the 
S/W version
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