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SD-R5112 Rev.1.0
3.5. Reliabilites
3.5.1. Error Rate
(1) Hard Read Error Rate (Byte Error Rate) ----- Allowing 5 Retries(default) -----
DVD:
10
-15
Max
CD:
Mode 1:10
-15
Max
Mode 2:10
-12
Max
(2) Seek Error Rate --- Allowing 5 Retries
10
-6
Max
(default)
3.5.2. MTBF
100,000 h
Assumptions: Power On Hours
5,436 h/year
On/Off Cycles
313 cycles/year
Number of Access
600,000 accesses/year
Operating Duty Cycle (Read)
20 % of Power On Time (Reading/Seeking)
Operating Duty Cycle (Write)
2 % of Power On Time (Writing/Seeking)
3.5.3. MTTR
0.5 h
3.5.4. Drive Life
15,000 h or 5 years (earlier one)
(1) Load/Eject
10,000 times or more
(2) Interface connector Attach/Detach
20 times or more
(3) DC Power connector Attach/Detach
20 times or more
4. Configuration
See Figure 3 for details of the configurations
4.1. Electrical Circuits
(1) Tray Eject Switch and Eject Detection Switch
(2) Optical Pickup Servo Drive Circuit
(3) Feed Motor Drive Circuit
(4) Laser Diode Control Circuit
(5) 8-16 Modulated data Demodulator, Error Correction Circuit and CSS Authenticator (DVD)
(6) EFM Demodulator, Error Correction Circuit and DA converter (CD)
(7) IDE/ATAPI Control and CD-ROM Error Correction Circuit
(8) CIRC Encoder
(9) EFM Encoder
(10) 8-16 Modulated data Encoder
(11) ATIP Demodulator
(12) LPP Demodulator
(13) Disc Moter Control Circuit
4.2. Optical Pickup
1-Lens and 2-Laser System
4.3. Spindle Motor
Brushless DC Motor
4.4. Feed Motor
DC Motor
4.5. Tray Load/Eject Motor
DC Motor
