Power Requirements; Audio Performance; Acoustic Noise - LG GSA-4040B Service Manual

4. Quality and Reliability
4.1 MTBF..................................................100,000 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...................................10,000 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 150 mVp-p Ripple voltage
+12V + 10% tolerance, less than 300 mVp-p Ripple voltage
5.2 Current
Idle (Hold track state)..............+5V DC
Read (Active) ..........................+5V DC
Seek (Acess) ..........................+5V DC
5.3 Standby
Sleep mode (No disc) .............1.0 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 0.5 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
.................................................Approx. 0.92 kg
* Which is not provided with Circuit Diagram of this model. Please Contact the friendly staff of LG
Service Care at: Website http: //biz.LGEservice.com
8
Typical
0.7 Vrms
+/-3dB
146x41.3x184.6mm
148.2x42x5 mm
e-mail http : //www.LGEservice.com/techsup.html
No degeneration in the mechanical part after test
0.6A Typ.
+12V DC 0.5A Typ.
0.7A Typ.
+12V DC 0.6A Typ.
0.8A Typ.
+12V DC 1.3A Typ.
1.2 W Max.
Test Signal
1KHz 0 dB
20-20kHz 0dB
0.1% 1KHz 0 dB
- -
-4 Nm
< 0.9 A Max.
< 0.9 A Max.
< 1.3 A Max.
< 1.2 A Max.
< 1.5 A Max.
< 1.8 A Max.
Test Condition
No Filter
with IHF-A + 20KHz LPF
-
Note
at 47k
None