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3.5. Reliabilites
3.5.1. Error Rate
(1) Hard Read Error Rate (Byte Error Rate) ----- Allowing 5 Retries(default) -----
(2) Seek Error Rate --- Allowing 10 Retries
3.5.2. MTBF
Assumptions: Power On Hours
3.5.3. MTTR
3.5.4. Drive Life
(1) Drawer Load/Release
(2) Interface connector Attach/Detach
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
4.3. Spindle Motor
4.4. Feed Motor
(default)
On/Off Cycles
Number of Access
Operating Duty Cycle (Read)
Operating Duty Cycle (Write)
-15
Mode 1:10
Max
-12
Mode 2:10
Max
-6
10
Max
60,000 h
5,436 h/year
313 cycles/year
600,000 accesses/year
20 % of Power On Time (Reading/Seeking)
2 % of Power On Time (Writing/Seeking)
0.5 h
15,000 h or 5 years (earlier one)
10,000 times or more
500 times or more
Semiconductor Laser
Brushless DC Motor
DC Motor
9/24
SR-C8002 Rev.1.0
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