Dvd Part; Electrical Troubleshooting Guide; System Operation Flow - Philips DVP721VR Service Manual

ELECTRICAL TROUBLESHOOTING GUIDE

1. System operation flow

Power On
1. 8032 initializes SERVO, DSP & RISC registers
2. Write RISC code to SDRAM
3. Reset RISC
Show LOGO
Yes
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. Systemoperati on Routi ne Loop
1. Stop Playback & Open Tray
2. Display tray open message & LOGO
No
Receive
CLOSE Key?

DVD PART

No
Yes
No
No
Yes
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