LG 42SL9000-ZA / 42SL9500-ZB (CHASSIS:LD91L) Service Manual ▷ View online
* Detail EDID Options are below
ⓐ Product ID
ⓑ Serial No: Controlled on production line.
ⓒ Month, Year: Controlled on production line:
ex) Monthly : ‘02’ -> ‘02’
Year : ‘2009’ -> ‘13’
ⓓ Model Name(Hex):
ⓔ Checksum: Changeable by total EDID data.
ⓕ Vendor Specific(HDMI)
4.5. Checking the function of Bluetooth
using adjusts Remote control
(1) Auto checking
- Auto checking is doing in “Power Only”.
- Checking the result of searched(check that is in list or not).
- Go out of checking mode pushing button “Exit”.
- Checking the result of searched(check that is in list or not).
- Go out of checking mode pushing button “Exit”.
(2) Manual checking
- Push the button “Power Only” and “Exit”.
- Push the button hot key “Bluetooth”.
- Checking the result of searched(check that is in list or not).
- Go out of checking mode pushing button “Exit”.
- Push the button hot key “Bluetooth”.
- Checking the result of searched(check that is in list or not).
- Go out of checking mode pushing button “Exit”.
4.6. 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)
turn off. (Must not AC power OFF during blinking)
Confirm whether is normal or not when between power
board's ac block and GND is impacted on 1.5kV(dc) or
2.2kV(dc) for one second.
board's ac block and GND is impacted on 1.5kV(dc) or
2.2kV(dc) for one second.
5. 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 the Diagnostics of SET UP
• Write Serial number by use RS-232.
• Must check the serial number at the Diagnostics of SET UP
menu. (Refer to below).
5.1. Signal TABLE
CMD : A0h
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
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
5.2. Command Set
* Description
FOS Default write : <7mode data> write
Vtotal, V_Frequency, Sync_Polarity, Htotal, Hstart, Vstart, 0,
Phase
Data write : Model Name and Serial Number write in EEPROM.
Vtotal, V_Frequency, Sync_Polarity, Htotal, Hstart, Vstart, 0,
Phase
Data write : Model Name and Serial Number write in EEPROM.
5.3. Method & notice
A. Serial number D/L is using of scan equipment.
B. Setting of scan equipment operated by Manufacturing
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.
by D-book 4.0.
Model Name
HEX
EDID Table
DDC Function
**SL9****
0001
0100
Analog
0000
0100
Digital
- 13 -
MODEL
MODEL NAME(HEX)
42SL9000 00 00 00 FC 00 34 32 53 4C 39 30 30 30 2D 5A 41 0A 20
42SL9500 00 00 00 FC 00 34 37 53 4C 39 30 30 30 2D 5A 41 0A 20
INPUT
MODEL NAME(HEX)
HDMI1
67 03 0C 00 10 00 B8 2D
HDMI2
67 03 0C 00 20 00 B8 2D
HDMI3
67 03 0C 00 30 00 B8 2D
HDMI4
67 03 0C 00 40 00 B8 2D
CMD
LENGTH
ADH
ADL
DATA_1
. . .
Data_n
CS
DELAY
No. Adjust
mode
CMD(hex)
LENGTH(hex)
Description
1
EEPROM WRITE
A0h
84h+n
n-bytes Write (n = 1~16)
- 14 -
* 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)
There is impossible to download by bar code scan, so It
need Manual download.
1) Press the ‘Instart’ key of ADJ remote control.
2) Go to the menu ‘5.Model Number D/L’ like below photo.
3) Input the Factory model name(ex 42LH4000-ZA) or Serial
model name or serial number is initialized.(Not always)
There is impossible to download by bar code scan, so It
need Manual download.
1) Press the ‘Instart’ key of ADJ remote control.
2) Go to the menu ‘5.Model Number D/L’ like below photo.
3) Input the Factory model name(ex 42LH4000-ZA) or Serial
number like photo.
4) Check the model name Instart menu -> Factory name
displayed (ex 42SL8000-ZB)
5) Check the Diagnostics (DTV country only) -> Buyer model
displayed (ex 42SL8000-ZB)
- 15 -
TROUBLESHOOTING
P800 Pin #7~#10
Voltage Level = 5V ?
P800 Pin #2
Voltage level = 5V ?
Check Power connector
OK ?
Replace Power Board
YES
NO
YES
P800 Pin #13, 14 = 12V
P800 Pin #17, 18 = 24V ?
NO
Replace Power Board
YES
NO
Replace MAIN B D Q801
MAIN B D L803 = 3.3V ?
Replace MAIN B D IC801
YES
NO
MAIN B D L816 = 1.26V ?
Replace MAIN B D IC805
YES
NO
MAIN B D L815 = 3.3V ?
Replace MAIN B’D IC810
YES
NO
Check MAIN B D X100 Clock
12MHz
Replace MAIN B D IC100
YES
NO
Replace MAIN B D IC102
NAND FLASH
YES
Replace MAIN B D IC103
Serial Flash
NO
Replace MAIN B’D
IC300, IC301 DDR2 Memory
NO
Replace MAIN B’D IC100
NO
1. Power-up Boot Fail
- 16 -
P800 Pin #20
Voltage level = 2V -
Check Power connector
OK ?
Replace Power Board
YES
NO
YES
P800 Pin #13, 14 = 12V
P800 Pin #17, 18 = 24V ?
NO
Replace Power Board
YES
NO
Replace MAIN B D Q802
MAIN B D L3505 = 12V ?
Replace MAIN B D Q806
YES
NO
MAIN B D C854 = 1.8V ?
Replace MAIN B D IC807
YES
NO
MAIN B D C833 = 1.26V ?
Replace MAIN B D IC802
YES
NO
Check MAIN B D X900 Clock
12MHz
Replace MAIN B D IC900
YES
NO
Replace MAIN B D IC902
Serial FLASH
YES
Replace MAIN B D
IC1000, IC1001 DDR2 Memory
NO
P800 Pin #13, 14 = 12V
P800 Pin #17, 18 = 24V ?
P3500~T-con LVDS Cable
OK ?
YES
Replace LVDS Cable
NO
Replace MAIN B’D IC900
NO
2. No OSD
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