LG 42LN5400-CN (CHASSIS:LD31B / LD36B) Service Manual ▷ View online
LG Electronics Inc. Display Division
Establish : 12/09/15
LC36B Adjust specification
LG(55)C2-0661-00
18/25
Reform : 12/09/15
LG electronics
MODEL NAME
HEX
EDID Table
DDC Function
HD/FHD Model
0001
01 00
Analog/Digital
ⓑ Serial No : Controlled on production line.
ⓒ Month, Year : Week : ‘01’ è ‘01’ Year : ‘2012’ è ‘16’ fix
ⓓ Model Name(Hex) : Refer to the ASCII Code Table.
ⓒ Month, Year : Week : ‘01’ è ‘01’ Year : ‘2012’ è ‘16’ fix
ⓓ Model Name(Hex) : Refer to the ASCII Code Table.
Cf) model name in EDID data is below.
MODEL NAME
MODEL NAME(HEX)
LG TV
00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 (LG TV)
ⓔ Checksum: Changeable by total EDID data.
5.5 Outgoing condition Configuration
■ When pressing IN-STOP key by SVC remocon, Red LED are blinked alternatively. And then automatically turn off.
(Must not AC power OFF during blinking)
5.6 GND and HI-POT Test
5.6.1. GND & HI-POT auto-check preparation
(1) Check the POWER CABLE and SIGNAL CABE insertion condition
5.6.2. 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.
EDID C/S data
FHD–8BIT
HDMI
HDMI
check
sum
(Hex)
sum
(Hex)
Block 0 42
Block 1
25 (HDMI1)
15 (HDMI2)
15 (HDMI2)
EDID C/S data
HD
HDMI
HDMI
check
sum
(Hex)
sum
(Hex)
Block 0 A3
Block 1
5B (HDMI1)
4B (HDMI2)
4B (HDMI2)
LG Electronics Inc. Display Division
Establish : 12/09/15
LC36B Adjust specification
LG(55)C2-0661-00
19/25
Reform : 12/09/15
LG electronics
5.6.3. Checkpoint
(1) Test voltage
① 3 Poles
- GND: 1.5KV/min at 100mA
- SIGNAL: 3KV/min at 100mA
② 2 Poles
- SIGNAL: 3KV/min at 100mA
(2) TEST time: 1 second
(3) TEST POINT
① 3 Poles
- GND Test = POWER CORD GND and SIGNAL CABLE GND.
- Hi-pot Test = POWER CORD GND and LIVE & NEUTRAL.
② 2 Poles
- Hi-pot Test = Accessible Metal and LIVE & NEUTRAL.
(4) LEAKAGE CURRENT: At 0.5mArms
6. Model name & Serial number Download
6.1 Model name & Serial number D/L
■
Press “Power on” key of service remocon.(Baud rate : 115200 bps)
■
Connect USB to RS232 cable at USB Jack.
■
Write model name and serial number.
■
Must check the model name and serial number at the Product/Service Info.
(menu keyà red key à select Product/Service info)
6.2 Signal TABLE
CMD
LENGTH ADH
ADL
DATA_1 . . .
Data_n
CS
DELAY
CMD
: A0h
LG Electronics Inc. Display Division
Establish : 12/09/15
LC36B Adjust specification
LG(55)C2-0661-00
20/25
Reform : 12/09/15
LG electronics
LENGTH
: 85~94h (1~16 bytes)
ADH
: EEPROM Sub Address high (00~1F)
ADL
: EEPROM Sub Address low (00~FF)
Data
: Write data
CS
: CMD + LENGTH + ADH + ADL + Data_1 + … + Data_n
Delay
: 20ms
6.3 Command Set
No.
Adjust mode
CMD(hex)
LENGTH(hex) Description
1
EEPROM WRITE
A0h
84h+n
n-bytes Write (n = 1~16)
* Description
FOS Default write : <7mode data> write
Vtotal, V_Frequency, Sync_Polarity, Htotal, Hstart, Vstart, 0, Phase
Vtotal, V_Frequency, Sync_Polarity, Htotal, Hstart, Vstart, 0, Phase
Data write : Model Name and Serial Number write in EEPROM,.
6.4 Method & notice
A. Serial number D/L is using of scan equipment.
B. Setting of scan equipment operated by Manufacturing Technology Group.
C. 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
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.
a. Press the ‘instart’ key of ADJ remote controller.
b. Go to the menu ‘
b. Go to the menu ‘
6.Model Number D/L’ like below photo.
c. Input the Factory model name or Serial number like photo.
LG Electronics Inc. Display Division
Establish : 12/09/15
LC36B Adjust specification
LG(55)C2-0661-00
21/25
Reform : 12/09/15
LG electronics
d. Check the model name Instart menu à Factory name displayed.
e. Check the Product/Service Info. (Menu Keyà Red Key à Select Product/Service Info.)
à Buyer model displayed.
7. Preset CH Information
If you turn on TV by pushing the ‘
POWER ON’ or ‘P-ONLY’ key, TV catch the channel 10 DTV, 1 CADTV, 12 ATV
and
2 CATV channels on line condition. Pr.2~4 of CADTV will be updated after changing channel to CADTV channel 1.
DTV Ch name is displayed below initially, but if you do channel tuning just one time, you can see DTV Ch name.
Total = 25(+3) Channels
2 CATV channels on line condition. Pr.2~4 of CADTV will be updated after changing channel to CADTV channel 1.
DTV Ch name is displayed below initially, but if you do channel tuning just one time, you can see DTV Ch name.
Total = 25(+3) Channels
◈ DTV
:
MUX No. in ‘( )’ is used for Hong Kong DTV.
MUX
Pr.
Name
CH information
Factory
15 (
23
)
1(82)
J2
SD
16 : 9
576i
GUMI
2(83)
Interactive Information
SD
16 : 9
576i
GUMI
3(85)
High Definition Jade
HD
16 : 9
1080i
GUMI
16 (
24
)
4(900)
CCTV-1
SD
4 : 3
576i
LGEND
5(901)
CCTV-2
SD
4 : 3
576i
LGEND
6(902)
CCTV-少儿
SD
4 : 3
576i
LGEND
7(903)
CCTV-音乐
SD
4 : 3
576i
LGEND
8(904)
BTV-1
SD
4 : 3
576i
LGEND
9(905)
CETV-3
SD
4 : 3
576i
LGEND
20 (
28
) 10(906)
CCTV–高淸
HD
16 : 9
1080i
LGEND
◈
CADTV :
MUX No. in ‘( )’ is used for Hong Kong DTV.
MUX
Pr.
Name
CH information
Factory
55 (
63
)
1
CCTV-4
SD
4 : 3
576i
LGEND
2
CCTV-9
SD
4 : 3
576i
LGEND
3
CCTV F
SD
4 : 3
576i
LGEND
4
CCTV E
SD
4 : 3
576i
LGEND
(Pr.2~4 of CADTV will be updated automatically after changing channel to Pr.1)
◈
ATV
Pr
System
Band
Name
CH
Freq.
Factory
1
PAL
DK
V/UHF
D-10
C 10
200.25 LGEND/GUMI
2
PAL
DK
V/UHF
K-36
C 36
695.25 LGEND/GUMI
3
PAL
I
V/UHF
I-05
C 05
183.25
GUMI
4
PAL
I
V/UHF
I-11
C 11
231.25
GUMI
5
PAL
I
V/UHF
I-41
C 41
631.25
GUMI
6
PAL
I
V/UHF
I-63
C 63
807.25
GUMI
7
8
Click on the first or last page to see other 42LN5400-CN (CHASSIS:LD31B / LD36B) service manuals if exist.