File name hfe_lg_electronics_lst-3510a_service_en.pdf
MODEL : LST-3510A
BEFORE SERVICING THE UNIT, READ THE "SAFETY PRECAUTIONS"
IN THIS MANUAL.
PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS...1-3
LOCATION OF CUSTOMER CONTROLS ...1-6
- Digital HDTV receiver/DVD player can receive a ground HD digital broadcasting signal and play a DVD.
LST3500 largely consists of 4 boards - ATSC board, Front Panel board, SMPS board, and DVD board.
Each board consists of the followings:
- System part
It consists of CPU, Flash Memory, System Memory, MPEG-II Decoder, and EPLD. It controls the operation of
the entire system, and handles MPEG A/V data.
- Tuner part
It generates TP signal by transmitting IF of the desired channel from the RF signal to the VSB receiver.
- A/V signal output part
It processes the A/V signal handled by the DAC to output.
Front Panel board
- Front part
It is located at the front, which receives various key inputs of users and displays the state of the set-top box
at the VFD.
- Power part
It supplies the DC power to the main digital board based on AC 110~220V as an input.
- DVD part
It plays a disc and transmits the A/V data to the MPEG Decoder IC.
PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS
IMPORTANT SAFETY NOTICE A.C. Voltmeter
This manual was prepared for use only by properly trained audio-video service
When servicing this product, under no circumstances should the original
design be modified or altered without permission from LG Electronics
Corporation. All components should be replaced only with types identical to
those in the original circuit and their physical location, wiring and lead dress
must conform to original layout upon completion of repairs.
Special components are also used to prevent x-radiation, shock and fire haz- Place this probe