Service Manual
Page 51
Reset RISC Show LOGO YES Tray Closed ? Judge whether have disc and disc type 2. Stop Playback & Open Tray 2. Jump to Closed position YES SLED at Inner Side ? YES 3-58 NO Tray Close to related disc reading procedure YES Recieve OPEN/CLOSE Key? System operation Routine Loop 1. Display tray open message & LOGO YES Receive CLOSE Key? Write RISC code to Inner Position 1. NO 1. Execute Pressed Key & IR Key 2. NO SLED Moves to SDRAM 3. SYSTEM OPERATION FLOW Power On 1. 186 CPU initializes SERVO,DSP & RISC registers 2. 2.
Reset RISC Show LOGO YES Tray Closed ? Judge whether have disc and disc type 2. Stop Playback & Open Tray 2. Jump to Closed position YES SLED at Inner Side ? YES 3-58 NO Tray Close to related disc reading procedure YES Recieve OPEN/CLOSE Key? System operation Routine Loop 1. Display tray open message & LOGO YES Receive CLOSE Key? Write RISC code to Inner Position 1. NO 1. Execute Pressed Key & IR Key 2. NO SLED Moves to SDRAM 3. SYSTEM OPERATION FLOW Power On 1. 186 CPU initializes SERVO,DSP & RISC registers 2. 2.
Service Manual
Page 52
... Power PCBA(110V or 220V) YES NO Replace power PCBA or AC transformer. Check IC102 Connect to PC RS232 Cable and update the FLASH memory code. Check FLASH R/W enable signal PRD,RWR. 4. 3. Check D201. 3. Switch on the Power PCBA YES Is the DC Voltage outputs OK? (5V, 3.3V, 12V, 5.6V MOTOR...
... Power PCBA(110V or 220V) YES NO Replace power PCBA or AC transformer. Check IC102 Connect to PC RS232 Cable and update the FLASH memory code. Check FLASH R/W enable signal PRD,RWR. 4. 3. Check D201. 3. Switch on the Power PCBA YES Is the DC Voltage outputs OK? (5V, 3.3V, 12V, 5.6V MOTOR...