Quality And Reliability - LG GWA-4161B Service Manual

4. Quality and Reliability

4.1 MTBF..................................................125,000 Power On Hours(Consecutive/Cumulative POH)
Assumption : ..........................Used in a normall office environment at room temperature.
-POH per year.........................3,000
-ON/OFF cycles per year........600
-Operating duty cycle..............20% of power on time (Seek: 5% of operating time)
4.2 Tray cycle test...................................30,000 times
4.3 Actuator mechanism ........................1,000,000 full stroke seek
4.4 MTTR (Mean Time To Repair) ...........0.5 h
4.5 Component life .................................5 years or 2,000 h of Laser radiating time
Assumption : ..........................Used in a normall office environment.
5. POWER REQUIREMENTS
5.1 Source voltage
+5V + 5% tolerance, less than 100 mVp-p Ripple voltage
+12V + 10% tolerance, less than 100 mVp-p Ripple voltage
5.2 Current
Idle (Hold track state)..............+5V DC
Write (Active) ..........................+5V DC
Read (Active) ..........................+5V DC
Seek (Acess) ..........................+5V DC
5.3 Standby
Sleep mode (No disc) .............2.5 W Typ.
6. AUDIO PERFORMANCE
Item
Output Level
Frequency response
THD
Headphone output level(Optional)
7. Acoustic noise
Less than 50dB, A scale, at 0.5 m away from the drive
Note : 1. Disc : Less than unbalance 0.3 x10
2. Installation : Horizontal
3. Ambient temperature : Normal temperature
4. Except loading, unloading and seek
8. Dimensions
External dimensions (W x H xD)
Front bezel (WxHxD)
9. Mass
.................................................880g+/-10g(net)
* Please Contact the friendly staff of LG Service Care at: Website http: //www.LGEservice.com
8
No degeneration in the mechanical part after test
+12V DC
+12V DC
+12V DC
+12V DC
Typical Test Signal
0.7 Vrms 1KHz 0 dB
+/-3dB 20-20kHz 0dB
0.1% 1KHz 0 dB
- -
-4 Nm
146x41.3x184.7mm
148x42x5 mm
0.6A Typ. < 1.0 A Max.
0.5A Typ. < 1.0 A Max.
0.9A Typ. < 1.3 A Max.
0.5A Typ. < 1.2 A Max.
0.6A Typ. < 1.2 A Max.
0.6A Typ. < 1.2 A Max.
0.7A Typ. < 1.2 A Max.
1.0A Typ. < 1.8 A Max.
3.0 W Max.
Test Condition
No Filter
with IHF-A + 20KHz LPF
-
Note
at 47k
None