System Operation Flow - LG DP372D Service Manual

2. SYSTEM OPERATION FLOW

YES
NO
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Power on
1. 8032 initializes SERVO,DSP & RISC registers
2. Write RISC code to SDRAM
3. Reset RISC
Show LOGO
Tray closed?
NO
Tray close to closed position
SLED at
inner side?
NO
SLED moves to inner position
1. Judge whether have disc and disc type
2. Jump to related disc reading procedure
Receive
OPEN/CLOSE Key?
NO
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?
YES
YES
YES
3-3 LGE Internal Use Only