DOWNLOAD LG 42LN5700 (CHASSIS:LT33B) Service Manual ↓ Size: 11.79 MB | Pages: 97 in PDF or view online for FREE

Model
42LN5700 (CHASSIS:LT33B)
Pages
97
Size
11.79 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
42ln5700-chassis-lt33b.pdf
Date

LG 42LN5700 (CHASSIS:LT33B) Service Manual ▷ View online

- 16 -
5.3.7. USB Input (3D) (3D supported mode manually)
No
Resolution
H-freq(kHz)
V-freq.(Hz)
Pixel clock(MHz)
3D input proposed mode
Proposed
1
1920*1080
33.75
30
74.25
2D to 3D
Side by Side(Half)*,
Top & Bottom*,
Checkerboard*
Row Interleaving,
Column Interleaving
 (Photo : side by Side(half), 
Top & Bottom)
HDTV 1080P
5.2.8. DLNA Input (3D)
No
Resolution
H-freq(kHz)
V-freq.(Hz)
Pixel clock(MHz)
3D input proposed mode
Proposed
1
1920*1080
33.75
30
74.25
2D to 3D
Side by Side(Half)*,
Top & Bottom*,
Checkerboard*
Row Interleaving,
Column Interleaving
 (Photo : side by Side(half), Top 
& Bottom)
HDTV 1080P
- 17 -
ADJUSTMENT INSTRUCTION
 
1. Application Range
This  specification  sheet  is  applied  all  of  the  LT33B  LED TV 
models, which produced in manufacture department or similar 
LG TV factory
2. Specification
(1)  Because this is not a hot chassis, it is not necessary to use 
an  isolation  transformer.  However,  the  use  of  isolation 
transformer will help protect test instrument.
(2)  Adjustment  must  be  done  in  the  correct  order.  But  it  is 
flexible when its factory local problem occurs.
(3)  The adjustment must be performed in the circumstance of 
25 ±5ºC of temperature and 65±10% of relative humidity if 
there is no specific designation.
(4)  The  input  voltage  of  the  receiver  must  keep  100~220V, 
50/60Hz.
(5) Before adjustment, execute Heat-Run for 5 minutes.
▪  After Receive 100% Full white pattern (06CH) then process 
Heat-run 
  (or “8. Test pattern” condition of Ez-Adjust status)
▪ How to make set white pattern 
1) Press Power ON button of Service Remocon
2)  Press ADJ  button  of  Service  remocon.  Select  “8.  Test 
pattern”  and,  after  select  “White”  using  navigation  button, 
and then you can see 100% Full White pattern. 
*  In this status you can maintain Heat-Run useless any pattern 
generator
* Notice :  if  you  maintain  one  picture  over  20  minutes 
(Especially sharp distinction black with white pattern 
-13Ch,  or  Cross  hatch  pattern  –  09Ch)  then  it  can 
appear image stick near black level.
3. Adjustment items
3.1. PCB Assembly Adjustment
▪  MAC Address / ESN / Widevine Download
▪   EDID  (The  Extended  Display  Identification  Data)/DDC 
(Display Data Channel) download
* If it is necessary, it can adjustment at Manufacture Line
    You can see set adjustment status at “1. ADJUST CHECK” 
of the “In-start menu” 
3.2. Set Assembly Adjustment
▪ Color Temperature (White Balance) Adjustment
▪ Using RS-232C
▪ PING Test
▪ Selection Factory output option
4. PCB Assembly Adjustment
4.1.  MAC Address,  ESN  Key  and  Widevine 
Key download 
4.1.1. Equipment & Condition
1) Play file: keydownload.exe
4.1.2. Communication Port connection
1) Key Write: Com 1,2,3,4 and 115200 (Baudrate)
2) Barcode: Com 1,2,3,4 and 9600 (Baudrate)
4.1.3. Download process
1) Select the download items.
2) Mode check: Online Only
3) Check the test process
-   DETECT  ->  MAC_WRITE  ->  ESN_WRITE  ->  WIDEVINE_
WRITE
4) Play : START
5) Check of result: Ready, Test, OK or NG
4.1.4. Communication Port connection
1)  Connect:  PCBA  Jig  ->  RS-232C  Port  ==  PC  ->  RS-232C 
Port
4.1.5. Download
1)  13Y  LCD TV+MAC+Widevine+ESN    Key+  HDCP1.4    and  
HDCP2.0
 
4.1.6. Inspection
- In INSTART menu, check these keys.
- 18 -
4.2. LAN PORT INSPECTION(PING TEST)
4.2.1. Equipment setting
1) Play the LAN Port Test PROGRAM.
2) Input IP set up for an inspection to Test 
    Program.
    *IP Number : 12.12.2.2.
4.2.2. LAN PORT inspection  (PING TEST)
1) Play the LAN Port Test Program.
2) connect each other LAN Port Jack.
3) Play Test (F9) button and confirm OK Message.
4) remove LAN CABLE
4.3.  ADC Adjust  =>  No  need  at Assembly 
line because of OPT type
* OTP mode
manufacture line, OTP is used 
for ADC Calibration automatically.
* External mode
Manual ADC  Calibration.    When  OTP  mode  is  failed, ADC 
calibration should be “OK” by 
using External mode.
- If you want re-adjust for ADC.
■ Enter Service Mode by pushing “ADJ” key,
Calibration”
■ Adjustment protocol
Order
Command
Set response
(1)  Inter the Adjustment mode aa 00 00
a 00 OK00x
(2) Change the Source
xb 00 40
xb 00 60 
b 00 OK40x (Adjust 480i Comp1 )
             (Adjust 1080p Comp1)
b 00 OK60x (Adjust 1080p RGB)
(3) Start Adjustment
ad 00 10
(4)  Return the Response
OKx ( Success condition )
NGx ( Failed condition )
(5) Read Adjustment data
( main)
ad 00 20 
( main )
ad 00 30
(main : component1 480i, RGB 1080p)
000000000000000000000000007c007b-
006dx
(main : component1 1080p)
000000070000000000000000007c0083
0077x
(6) Confirm Adjustment
ad 00 99
NG 03 00x (Failed condition)
NG 03 01x (Failed condition)
NG 03 02x (Failed condition)
OK 03 03x (Success condition)
(7) End of Adjustment
ad 00 90
d 00 OK90x
- 19 -
5. Factory Adjustment
5.1.  EDID  (The  Extended  Display  Identification 
Data)/DDC (Display Data Channel) Download
● Summary
▪  It  is  established  in  VESA,  for  communication  between  PC 
and  Monitor  without  order  from  user  for  building  user 
condition. It helps to make easily use realize “Plug and Play” 
function. For EDID data write, we use DDC2B protocol.
● Auto Download (No need Writing EDID data in Assembly line)
▪  After  Set  Tool  Option,  then  TV  turn  off  and  on  finish  auto 
download
*  EDID data for 3DTV (LA62/64/66/68/69/74 Seriese)  (Model 
name = LG TV ) .
*Rev. 15xxx to confirm that, Rev. up subject to change
- HDMI EDID table 
- HDMI-1 EDID table (0xE8, 0xCC)
(1) HDMI 1 Check sum : 0xE8, 0XCC (CEA Block 0x21 :10)
(2) HDMI 2 Check sum : 0xE8, 0XBC (CEA Block 0x21 :20)
(3) HDMI 3 Check sum : 0xE8, 0XAC (CEA Block 0x21 :30)
*  EDID data for Non-3DTV (LN56/57 Seriese)  (Model name = 
LG TV )
*Rev. 15xxx to confirm that, Rev. up subject to change
- HDMI EDID table 
- HDMI-1 EDID table (0X43, 0x8A)
(1) HDMI 1 Check sum : 0x43, 0X8A (CEA Block 0x21 :10)
(2) HDMI 2 Check sum : 0x43, 0X7A (CEA Block 0x21 :20)
(3) HDMI 3 Check sum : 0x43, 0X6A (CEA Block 0x21 :30)
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