Service Manual
Page 51
NO Tray Close to related disc reading procedure YES Recieve OPEN/CLOSE Key? Jump to Closed position YES SLED at Inner Side ? NO SLED Moves to SDRAM 3. Judge whether have disc and disc type 2. Execute Pressed Key & IR Key 2. Reset RISC Show LOGO YES Tray Closed ? NO 1. YES 3-58 SYSTEM OPERATION FLOW Power On 1. 186 CPU initializes SERVO,DSP & RISC registers 2. Write RISC code to Inner Position 1. Display tray open message & LOGO YES Receive CLOSE Key? System operation Routine Loop 1. Stop Playback & Open Tray 2. 2.
NO Tray Close to related disc reading procedure YES Recieve OPEN/CLOSE Key? Jump to Closed position YES SLED at Inner Side ? NO SLED Moves to SDRAM 3. Judge whether have disc and disc type 2. Execute Pressed Key & IR Key 2. Reset RISC Show LOGO YES Tray Closed ? NO 1. YES 3-58 SYSTEM OPERATION FLOW Power On 1. 186 CPU initializes SERVO,DSP & RISC registers 2. Write RISC code to Inner Position 1. Display tray open message & LOGO YES Receive CLOSE Key? System operation Routine Loop 1. Stop Playback & Open Tray 2. 2.
Service Manual
Page 52
... IC YES NO Check the regulators or related diodes. Check 27MHz system clock. 2. Check IC102 Connect to PC RS232 Cable and update the FLASH memory code. YES A NO 1. YES Is 3.3V outputs normal on . Check D201. 3. Check system reset circuit. 3. Check FLASH Memory related circuit. 3-59 3. YES Update FLASH successfully? Check...
... IC YES NO Check the regulators or related diodes. Check 27MHz system clock. 2. Check IC102 Connect to PC RS232 Cable and update the FLASH memory code. YES A NO 1. YES Is 3.3V outputs normal on . Check D201. 3. Check system reset circuit. 3. Check FLASH Memory related circuit. 3-59 3. YES Update FLASH successfully? Check...