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PDF L1800PM Data sheet ( Hoja de datos )
| Número de pieza | L1800PM | |
| Descripción | COLOR MONITOR SERVICE MANUAL | |
| Fabricantes | LG | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de L1800PM (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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Website:http://biz.LGservice.com
E-mail:http://www.LGEservice.com/techsup.html
COLOR MONITOR
SERVICE MANUAL
CHASSIS NO. : CL-29
FACTORY MODEL: LB886F
MODEL:
L1800PM (LB886F-SL)
*( ) ID LABEL MODEL No.
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
SOURCE
MENU
AUTO/SET
VOLUME
1 page  
OPERATING INSTRUCTIONS
FRONT VIEW
SOURCE
MENU
AUTO/SET
VOLUME
Front Control Panel
REAR VIEW
AUDIO DC OUT
D-sub Siganl Port
DVI Port
ADUCDIINO AUIDNIO
AUDIO DC IN
AUDIO IN
Power ON/OFF
Switch
Power Connect
Stand Lock
Stand Cover
USB Port
-5-
5 Page 
DESCRIPTION OF BLOCK DIAGRAM
1. Input signal switching part(BA7657).
There are two anolog inputs which are D-Sub analog and DVI-anolog input.
They come from each 15 pin D-Sub and 29 pin DVI-I connector.
2. Video Controller Part(GM5020).
This part amplifies the level of video signal for the anolog to digital conversion and converts from the analog video
signal to the digital video signal using a pixelclock.
The pixel clock for each mode is generated by the PLL.
The range of the pixel clock is from 25MHz to 135MHz.
This part consists of the Scaler and frame buffers which converts frame rate of input signal to 60Hz frame rate.
The Scaler gets the video signal converted analog to digital, interpolates input to1280 X 1024 resolution signal and
outputs 8-bit R, G, B signal to transmitter.
Especially pre-amp / ADC / Video controller are merged to one chip ‘Gm5020’ by Genesis.
Also FRC is separate.
3. Display Data Transmitter Part(LVDS).
This part transmit digital signal from the Scaler to the receiver of module.
4. Power Part.
This part consists of the one 5V, two 3.3V and one 2.5 regulators to convert power which is provided 12V, 5V in
Power Board.
12V is provided for inverter, 5V is provided for Micom and LCD Panel.
Also, 5V is converted 3.3V and 2.5V by regulator. Converted power is provided for IC in the main board.
5. MICOM Part.
This part consists of EEPROM IC which stores control data, Reset IC and the Micom.
The Micom distinguishes polarity and frequency of the H/V sync are supplied from signal cable.
The controlled data of each modes is stored in EEPROM.
6. Inverter
The inverter converts from DC12V to AC 700Vrms and operate back-light lamp of module.
7. Audio Part
Input voltage is DC12V from Main board Audio Signal AC 700Vrms is amplified.
- 11 -
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet L1800PM.PDF ] | |
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