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3. SERVO BLOCK
........................................................................................................... 33
3-1. General Description of Servo Circuits
............................................................... 33
3-1-1. Optical Pickup Control .......................................................................................... 33
3-1-2. Sled Control ........................................................................................................... 33
3-1-3. Spindle Control ...................................................................................................... 33
3-1-4. Tilt Control ............................................................................................................ 33
3-1-5. Disc Loading and Chucking .................................................................................. 33
3-1-6. Disc Judgment ....................................................................................................... 33
3-1-2. Sled Control ........................................................................................................... 33
3-1-3. Spindle Control ...................................................................................................... 33
3-1-4. Tilt Control ............................................................................................................ 33
3-1-5. Disc Loading and Chucking .................................................................................. 33
3-1-6. Disc Judgment ....................................................................................................... 33
3-2. Servo Operation at DVD Play
.............................................................................. 34
3-2-1. Optical Pickup Control .......................................................................................... 34
3-2-2. Sled Control ........................................................................................................... 41
3-2-3. Spindle Control ...................................................................................................... 43
3-2-4. Tilt Control ............................................................................................................ 44
3-2-2. Sled Control ........................................................................................................... 41
3-2-3. Spindle Control ...................................................................................................... 43
3-2-4. Tilt Control ............................................................................................................ 44
3-3. Servo Operation at CD and Video CD Playing
............................................... 46
3-3-1. Optical Pickup Control .......................................................................................... 46
3-3-2. Sled Control ........................................................................................................... 50
3-3-3. Spindle Control ...................................................................................................... 50
3-3-4. Tilt Control ............................................................................................................ 50
3-3-2. Sled Control ........................................................................................................... 50
3-3-3. Spindle Control ...................................................................................................... 50
3-3-4. Tilt Control ............................................................................................................ 50
3-4. Disc Loading and Chucking
.................................................................................. 50
3-4-1. Motor Driver .......................................................................................................... 51
3-4-2. Tray Position Detection ......................................................................................... 51
3-4-2. Tray Position Detection ......................................................................................... 51
3-5. Differentiation of Disk Type ...................................................................
52
3-5-1. CD/DVD Differentiation ....................................................................................... 52
3-5-2. SL/DL Differentiation ............................................................................................ 52
3-5-3. Differentiation ........................................................................................................ 52
3-5-2. SL/DL Differentiation ............................................................................................ 52
3-5-3. Differentiation ........................................................................................................ 52
3-6. Block Diagram (Servo)
........................................................................................... 53
4. IC PIN DESCRIPTION
.......................................................................................... 55
4-1. ARP CXD1865R (IC806 on MB-80 board)
..................................................... 55
4-1-1. Block Diagram ....................................................................................................... 55
4-1-2. Pin Functions ......................................................................................................... 57
4-1-2. Pin Functions ......................................................................................................... 57
4-2. AV Decoder L64020 (IC203 on MB-78 board)
.............................................. 62
4-2-1. Block Diagram ....................................................................................................... 62
4-2-2. Pin Assignment ...................................................................................................... 63
4-2-2. Pin Assignment ...................................................................................................... 63
4-3. Digital Signal Processor CXD8730R (IC506 on MB-78 board)
............... 65
4-3-1. Pin Assignment ...................................................................................................... 65
4-3-2. Pin Functions ......................................................................................................... 66
4-3-2. Pin Functions ......................................................................................................... 66
4-4. AC-3 Decoder MB86342 (IC104 on MB-78 board)
...................................... 70
4-4-1. Block Diagram ....................................................................................................... 70
4-4-2. Pin Functions ......................................................................................................... 71
4-4-2. Pin Functions ......................................................................................................... 71
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