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9/24 SR-C8002 Rev.1.0
3.5. Reliabilites
3.5.1. Error Rate
(1) Hard Read Error Rate (Byte Error Rate) ----- Allowing 5 Retries(default) -----
Mode 1:10
-15
Max
Mode 2:10
-12
Max
(2) Seek Error Rate --- Allowing 10 Retries 10
-6
Max
(default)
3.5.2. MTBF 60,000 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) Drawer Load/Release 10,000 times or more
(2) Interface connector Attach/Detach 500 times or more
4. Configuration
See Figure 4 for details of the configurations
4.1. Electrical Circuits
(1) Drawer Release Switch and Release Detection Switch
(2) Optical Pickup Servo Drive Circuit
(3) Feed Motor Drive Circuit
(4) Laser Diode Control Circuit
(5) EFM Demodulator, Error Correction Circuit and DA converter
(6) IDE/ATAPI Control and CD-ROM Error Correction Circuit
(7) CIRC Encoder
(8) EFM Encoder
(9) ATIP Demodulator
(10) Disc Moter Control Circuit
4.2. Optical Pickup Semiconductor Laser
4.3. Spindle Motor Brushless DC Motor
4.4. Feed Motor DC Motor