Daewoo DQD-2100D, Service Manual

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CIRCUIT OPERATIONAL DESCRIPTION
MPEG B/D SECTION
Picture 1. [ General Block Diagram]
1. Operational Description of MPEG B/D
1) General Operation of B/D
(1) Initial power supply operation
When the power cord is plugged in, only EVER power is outputted to use minimum power supply such
as u-COM and Flash Memory and MAIN power input is on standby status.
If Power On Key is inputted, u-COM recognizes it and send Power On (L) signal to POWER, then the
whole power is outputted from POWER and Set is in normal operation.
(2) Function of MPEG B/D
The general Set operation of Key operation and Power supply is controlled by u-COM, and DVD Format
data Decoding and Video, Audio signal separation/output are executed in Loader.
Here, Video output is in Analog and Audio output is in Digital Data Format to be inputted at Audio DAC.
(See general block diagram below)