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-I-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
3-3. 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
3-4. Disc Loading and Chucking ..................................................................................50
3-4-1. Motor Driver .......................................................................................................... 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 ............ i........................................................................................... 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
4-2. AV Decoder L64020 (IC203 on MB-78 board) ..............................................62
4-2-1. Block Diagram ....................................................................................................... 62
4-2-2. Pin Assignment ...................................................................................................... 63
4-3. Digital Signal Processor CXD8730R (1C506 on MB;.78 board) ............... 65
4-3:1. Pin Assignment ...................................................................................................... 65
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
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