Zenith ZDA311 - Slim Progressive Scan DVD Service Manual - page 13
Manual is about: DVD VIDEO PLAYER
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2. System operation flow
NO
NO
NO
YES
YES
YES
YES
YES
Power On
1. 8032 initializes SERVO,DSP & RISC registers
2. Write RISC code to SDRAM
3. Reset RISC
Show LOGO
Tray Closed ?
Tray Close to Closed position
SLED at Inner Side ?
SLED Moves to Inner Position
1. Judge whether have disc and disc type
2. Jump to related disc reading procedure
Recieve OPEN/CLOSE Key?
1. Execute Pressed Key & IR Key
2. System operation Routine Loop
1. Stop Playback & Open Tray
2. Display tray open message & LOGO
Receive CLOSE Key?