LG 42LB550T Service Manual

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LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
[Caution]
* Use the proper signal cable for EDID Download
- Analog EDID : Pin3 exists
- Digital EDID : Pin3 exists
* Edid data and Model option download (RS232)
(1) FHD 8BIT 2D HDMI EDID DATA
(2) Detail EDID Options are below
a. Product ID
b. Serial No: Controlled on production line.
c. Month, Year: Controlled on production line:
ex) Week : '01' -> '01'
Year : '2012' -> '16' fix
d. Model Name(Hex):
cf) TV set’s model name in EDID data is below.
e. Checksum: Changeable by total EDID data.
f. Vendor Specific
- FHD 8bit Model
5.4. Outgoing condition Configuration
■ When pressing IN-STOP key by Service remote control,
Red LED are blinked alternatively. And then automatically
turn off. (Must not AC power OFF during blinking)
5.5. GND and HI-POT Test
5.5.1. GND & HI-POT auto-check preparation
(1) Check the POWER CABLE and SIGNAL CABE insertion
condition.
(2) You can’t use Tuner Ground & Tuner signal line at all
models (applied Isolator inner tuner)
5.5.2. 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.
5.5.3. Checkpoint
(1) Test voltage
1) 3 Poles
- GND: 1.5KV/min at 100 mA
- SIGNAL: 3KV/min at 100 mA
2) 2 Poles
- SIGNAL: 3 KV/min at 100 mA
(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
NO Item CMD 1 CMD 2 Data 0
Enter download
Mode
Download
‘Mode In’
A A 0 0
When transfer the ‘Mode In’,
Carry the command.
EDID data and
Model option
download
ADC Adjust A E 00 10
Automatically adjustment
(The use of a internal pattern)
No. Item Condition Hex Data
1 Manufacturer ID GSM 1E6D
2 Version Digital : 1 01
3 Revision Digital : 3 03
0 1 2 3 4 5 6 7 8 9 A B C D E F
0 00 FF FF FF FF FF FF 00 1E 6D A B
10 C 01 03 80 A0 5a 78 0A EE 91 A3 54 4C 99 26
20 0F 50 54 A1 08 00 31 40 45 40 61 40 71 40 81 80
30 01 01 01 01 01 01 02 3A 80 18 71 38 2D 40 58 2C
40 45 00 A0 5A 00 00 00 1E 66 21 50 B0 51 00 1B 30
50 40 70 36 00 A0 5A 00 00 00 1E 00 00 00 FD 00 3A
60 3E 1E 53 10 00 0A 20 20 20 20 20 20 D
70 D 01 E
80 02 03 22 F1 4E 10 9F 04 13 05 14 03 02 12 20 21
90 22 15 01 26 15 07 50 09 57 07 f
A0 80 1E 01 1d 80 18 71 1c 16 20 58 2c 25 00 20 C2
B0 31 00 0 9e 01 1d 00 72 51 d0 1e 20 6e 28 55 00
C0 20 C2 31 00 00 1e 02 3a 80 18 71 38 2d 40 58 2c
D0 45 00 A0 5a 00 00 00 1e 01 1d 00 Bc 52 d0 1e 20
E0 B8 28 55 40 C4 8e 21 00 00 1e 00 00 00 00 00 00
F0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 E
Model Name HEX EDID Table DDC Function
HD/FHD Model 0001 01 00 Analog/Digital
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)
EDID C/S data
FHD-8BIT
HDMI
Check Sum
(Hex)
Block 0 41
Block 1
25 (HDMI1)
15 (HDMI2)
Input Model name(HEX)
HDMI1 67030C001000
HDMI2 67030C002000

LG 42LB550T Specifications

General

Brand	LG
Model	42LB550T
Category	LED TV
Language	English