DOWNLOAD LG 47LM620S / 47LM620T / 47LM625S (CHASSIS:LD22E) Service Manual ↓ Size: 10.5 MB | Pages: 119 in PDF or view online for FREE

Model
47LM620S 47LM620T 47LM625S (CHASSIS:LD22E)
Pages
119
Size
10.5 MB
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PDF
Document
Service Manual
Brand
Device
TV / LCD
File
47lm620s-47lm620t-47lm625s-chassis-ld22e.pdf
Date

LG 47LM620S / 47LM620T / 47LM625S (CHASSIS:LD22E) Service Manual ▷ View online

- 10 -
ADJUSTMENT INSTRUCTION
1. Application Range
This specification sheet is applied to all of the LED LCD TV 
with LD22E chassis.
2. Designation
(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. 
(3)  The adjustment must be performed in the circumstance of 
25 °C ± 5 °C of temperature and 65 % ± 10 % of relative 
humidity if there is no specific designation. 
(4)  The  input  voltage  of  the  receiver  must  keep AC  100-240 
V~, 50/60 Hz.
(5)  The receiver must be operated for about 5 minutes prior to 
the adjustment when module is in the circumstance of over 
15.
In case of keeping module is in the circumstance of 0 °C, it 
should be placed in the circumstance of above 15 °C for 2 
hours.
In case of keeping module is in the circumstance of below 
-20 °C, it should be placed in the circumstance of above 15 
°C for 3 hours.
[Caution] 
When  still  image  is  displayed  for  a  period  of  20  minutes  or 
longer  (Especially  where  W/B  scale  is  strong.  Digital  pattern 
13ch  and/or  Cross  hatch  pattern  09ch),  there  can  some 
afterimage in the black level area.
3. Automatic Adjustment
3.1. ADC Adjustment
3.1.1. Overview
ADC  adjustment  is  needed  to  find  the  optimum  black  level 
and gain in Analog-to-Digital device and to compensate RGB 
deviation.
3.1.2. Equipment & Condition
(1) USB to RS-232C Jig
(2)  MSPG-925  Series  Pattern  Generator(MSPG-925FA, 
pattern - 65)
- Resolution : 1080P Comp1
 
1920*1080 RGB
- Pattern : Horizontal 100% Color Bar Pattern
- Pattern level : 0.7 ± 0.1 Vp-p
- Image
3.1.3. Adjustment
(1) Adjustment method
▪  Don’t need to adjust ADC because there is data in OTP 
and adjusted initially.
▪ Check ADC adjustment
1)  Press  In  start  key  on  the Adj.  Remote  Control,  then 
Adjust ADC(OTP) status is displayed on “1.Adjustment 
check”.  Select  “2.ADC  Data”,  then  ADC  data  is 
displayed.
2)  Press Adj. key on the Adjustmetn Remote Control, and 
select  “9.ADC  Calibration”.  Set  up  the ADC  Type  to 
OTP, then Select [Start] button by pressing Enter key, 
Component and RGB are Writed and display Success 
or NG.
(2) Adj. protocol
Ref.) ADC Adj. RS232C Protocol_Ver1.0
(3) Adj. order
- aa 00 00 [Enter ADC adj. mode]
-  xb 00 04 [Change input source to Component1 (480i& 
1080p)]
- ad 00 10 [Adjust 480i&1080p Comp1]
- xb 00 06 [Change input source to RGB(1024*768)]
- ad 00 10 [Adjust 1920*1080 RGB]
- ad 00 90 End adj.
Protocol
Command
Set ACK
Enter adj. mode
aa 00 00
a 00 OK00x
Source change
xb 00 04
b 00 OK04x (Adjust 480i, 1080p Comp1 )
xb 00 06
b 00 OK06x (Adjust 1920*1080 RGB)
Begin adj.
ad 00 10
Return adj. result
OKx (Case of Success)
NGx (Case of Fail)
Read adj. data
(main)
ad 00 20
(main)
000000000000000000000000007c007b006dx
(sub )
(Sub)
000000070000000000000000007c00830077x
ad 00 21
Confirm adj.
ad 00 99
NG 03 00x (Fail)
NG 03 01x (Fail)
NG 03 02x (Fail)
OK 03 03x (Success)
End adj.
aa 00 90
a 00 OK90x
- 11 -
3.2.  MAC address D/L, CI+ key D/L, Widevine 
key D/L, ESN D/L
Connect: USB port
Communication Prot connection
▪ Com 1,2,3,4 and 115200(Baudrate)
Mode check: Online Only
▪ check the test process: DETECT -> MAC -> CI -> Widevine 
-> ESN
▪. Play: START
▪. Result: Ready, Test, OK or NG
▪. Printer Out (MAC Address Label)
3.3. LAN
3.3.1. Equipment & Condition
▪ Each other connection to LAN Port of IP Hub and Jig
3.3.2. LAN inspection solution
▪ LAN Port connection with PCB
▪ Network setting at MENU Mode of TV
▪ Setting automatic IP
▪ Setting state confirmation
→  If automatic setting is finished, you confirm IP and MAC 
Address.
3.3.3. WIDEVINE key Inspection
- Confirm key input data at the "IN START" MENU Mode.
3.4. LAN PORT INSPECTION(PING TEST)
Connect SET → LAN port == PC → LAN Port
3.4.1. 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
3.4.2. 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.
Play: Start
 
G
SET
PC
- 12 -
3.5. Model name & Serial number Download
3.5.1. Model name & Serial number D/L
 Press "Power on" key of service remote control.
(Baud rate : 115200 bps)
 Connect RS232 Signal Cable to RS-232 Jack.
 Write Serial number by use RS-232.
 Must check the serial number at Instart menu.
3.5.2. Method & notice
(1) Serial number D/L is using of scan equipment.
(2)  Setting  of  scan  equipment  operated  by  Manufacturing 
Technology Group.
(3)  Serial number D/L must be conformed when it is produced 
in production line, because serial number D/L is mandatory 
by D-book 4.0
* Manual Download (Model Name and Serial Number)
If the TV set is downloaded by OTA or service man, sometimes 
model name or serial number is initialized.(Not always)
It  is  impossible  to  download  by  bar  code  scan,  so  It  need 
Manual download.
1) Press the "Instart" key of Adjustment remote control.
2) Go to the menu "5.Model Number D/L" like below photo.
3)  Input  the  Factory  model  name(ex  47LM760S-ZB-A)  or 
Serial number like photo.
4)  Check  the  model  name  Instart  menu.  →  Factory  name 
displayed. (ex 47LM760S-ZB)
5)  Check  the  Diagnostics.(DTV  country  only)  →  Buyer 
model displayed. (ex 47LM760S-ZB)
3.6. CI+ Key checking method
- Check the Section 3.2
Check  whether  the  key  was  downloaded  or  not  at  ‘In  Start’ 
menu. (Refer to below).
=> Check the Download to CI+ Key value in LGset.
3.6.1. Check the method of CI+ Key value
(1) Check the method on Instart menu
(2) Check the method of RS232C Command 
1) Into the main ass’y mode(RS232: aa 00 00)
2) Check the key download for transmitted command
    (RS232: ci 00 10)
3) Result value
- Normally status for download : OKx
- Abnormally status for download : NGx
3.6.2. Check the method of CI+ key value(RS232)
1) Into the main ass’y mode(RS232: aa 00 00)
2) Check the mothed of CI+ key by command
    (RS232: ci 00 20)
3) Result value
i 01 OK 1d1852d21c1ed5dcx
3.7. WIFI MAC ADDRESS CHECK
(1) Using RS232
(2) Check the menu on in-start.
CMD 1
CMD 2
Data 0
A
A
0
0
CMD 1
CMD 2
Data 0
C
I
1
0
CMD 1
CMD 2
Data 0
A
A
0
0
CMD 1
CMD 2
Data 0
C
I
2
0
 
CI+ Key Value
H-freq(kHz)
V-freq.(Hz)
Transmission
[A][I][][Set ID][][20][Cr]
[O][K][X] or [NG]
- 13 -
4. Manual Adjustment
*  ADC  adjustment  is  not  needed  because  of  OTP(Auto ADC 
adjustment)
4.1  EDID(The  Extended  Display  Identification 
Data)/DDC(Display Data Channel) download
4.1.1. Overview
It is a VESA regulation. A PC or a MNT will display an optimal 
resolution  through  information  sharing  without  any  necessity 
of user input. It is a realization of "Plug and Play".
4.1.2. Equipment
-  Since  embedded  EDID  data  is  used,  EDID  download  JIG, 
HDMI cable and D-sub cable are not need.
- Adjustment remote control
4.1.3. Download method
(1)  Press  "ADJ"  key  on  the Adjustment  remote  control  then 
select "10.EDID D/L", By pressing "Enter" key, enter EDID 
D/L menu.
(2)  Select  "Start"  button  by  pressing  "Enter"  key,  HDMI1/ 
HDMI2/ HDMI3/ HDMI4/ RGB are writing and display OK 
or NG.
4.1.4. EDID DATA
(1) 3D EDID DATA
▪ Reference
- HDMI1 ~ HDMI4 / RGB 
-  In the data of EDID, bellows may be different by S/W or 
Input mode. 
. Product ID
. Serial No: Controlled on production line.
. Month, Year: Controlled on production line:
ex) Week : '01' -> '01'
Year : '2012' -> '16' fix
. Model Name(Hex): LGTV
. Checksum: Changeable by total EDID data.
. Vendor Specific(HDMI)
1) Deep color (module 10bit)
2) None deep color (module 8bit)
 Colorimetry Data Block(HDMI)
- The Model supporting XvYcc(LM7600) 
For Analog
For HDMI EDID
D-sub to D-sub
DVI-D to HDMI or HDMI to HDMI
HEX
EDID Table
DDC Function
0001
01 00
Analog/Digital
Chassis
MODEL NAME(HEX)
LD22E
00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 
INPUT
MODEL NAME(HEX)
HDMI1 78 03 0C 00 10 00 B8 2D 20 C0 0E 01 4F 3F FC 08 10 18 10 06 10 16 10 28 10
HDMI2 78 03 0C 00 20 00 B8 2D 20 C0 0E 01 4F 3F FC 08 10 18 10 06 10 16 10 28 10
HDMI3 78 03 0C 00 30 00 B8 2D 20 C0 0E 01 4F 3F FC 08 10 18 10 06 10 16 10 28 10
HDMI4 78 03 0C 00 40 00 B8 2D 20 C0 0E 01 4F 3F FC 08 10 18 10 06 10 16 10 28 10
INPUT
MODEL NAME(HEX)
HDMI1 78 03 0C 00 10 00 80 2D 20 C0 0E 01 4F 3F FC 08 10 18 10 06 10 16 10 28 10
HDMI2 78 03 0C 00 20 00 80 2D 20 C0 0E 01 4F 3F FC 08 10 18 10 06 10 16 10 28 10
HDMI3 78 03 0C 00 30 00 80 2D 20 C0 0E 01 4F 3F FC 08 10 18 10 06 10 16 10 28 10
HDMI4 78 03 0C 00 40 00 80 2D 20 C0 0E 01 4F 3F FC 08 10 18 10 06 10 16 10 28 10
INPUT
MODEL NAME(HEX)
HDMI1
E3 05 00 00
HDMI2
E3 05 00 00
HDMI3
E3 05 00 00
HDMI4
E3 05 03 01
1
2
10 bit/ 
Xvycc
2
8 bit/ 
Xvycc
2
10 bit/
none XvYcc
2
8 bit/
none XvYcc
3
HDMI1
43
11
49
15
4D
X
HDMI2
43
01
39
05
3D
X
HDMI3
43
F1
29
F5
2D
X
HDMI4
43
E1
19
E5
1D
X
RGB
X
X
X
X
X
5C
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