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3.5. Reliabilities
3.5.1. Error Rate
(1) Hard Read Error Rate (Byte Error Rate) -------Allowing 5 Retries (default)
(2) Seek Error Rate -------------------------------------Allowing 10 Retries (default)
3.5.2. MTBF
Assumptions: Power On Hours
3.5.3. MTTR
3.5.4. Drive Lifetime
(1) Drawer Load/Release
(2) Interface connector Attach/Detach
Notes:
*1: On the same assumptions of MTBF.
4. Configuration
See Figure 6 for details.
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)
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 and Copy Protect Circuit (DVD)
(8)
BCA Decoding Circuit
(9)
CIRC Encoder
(10) EFM Encoder
(11) 8-16 Modulated data Encoder
(12) ATIP Demodulator
(13) LPP Demodulator
(14) Disc Motor Control Circuit
4.2. Optical Pickup
4.3. Spindle Motor
4.4. Feed Motor
DVD:
CD:
On/Off Cycles
Number of Access
Operating Duty Cycle (Read)
Operating Duty Cycle (Write)
-15
10
Max
-15
Mode 1:10
-12
Mode 2:10
-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
*1
15,000 h
or 5 years (the earlier one)
10,000 times or more
500 times or more
1-Lens and 2-Laser System
Brushless DC Motor
Stepping Motor
12 / 28
Max
Max
TS-L532A (SD-R6472) Rev.1.1
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