Audio - LG 32LN540B-CN Service Manual

LGE
Establish : 12/08/31
Reform: 12/08/31

10. Audio

All measurement should be implemented with following condition
Model
32/39/42/47/55LN5400
No Item
1 Audio practical max Output, L/R
2. Speaker (8 Impedance)
3. Audio S/N Ratio Mono/L,R
4. Audio Buzz P/S Ratio
5. Audio Noise Limited Mono
Sensitivity
Stereo
6. Audio Frequency L/R
Response, Low
7. Audio Frequency L/R
Response, High
8. Audio Bass/Treble Characteristic, L/R
9. Audio THD, L/R
10 Audio Max Distortion
11 Audio Residual Hum, L/R
12 Dual Sound Crosstalk, Main/Sub
13 Stereo Separation, L/R
Display Division
NetCast 4.0 Low LC36B Product Specification
R&D Spec
-EQ OFF (at SVC Menu) with Dummy Load (8ohm)
10W + 10W -Sound mode: Standard / Picture mode: Vivid
-Auto volume : Off
Min Typ Max
9 10 12
9 10 12
9 10 12
9 10 12
10 15
40.0
30.0
-80.0
-70.0
80.0
7.0 10.0 15.0
3.0 6.0 9.0
2.0
20.0
12.5
45 -45.0
25.0
Condition
Unit Measurement condition
EQ Off/AVL Off
W
Clear Voice Off
RF Audio Output
W (RF 1kHz
100% modulation)
AV Audio Output
W
(1KHz 0.4Vrms)
PC Audio Output
W
(1KHz 0.7Vrms)
W
dB
dB
dBm
Hz
KHz
dB
%
%
uW
dB
dB
LG(51)
26
Remark
Audio S/N Ratio
IF Modulator P/S Ratio variable
: S/N = 30dB, P/S Ratio
S/N = 30dB,
Input electric field intensity
Frequency Response, Low
Frequency Response, High
By operating Tone control,
Sound quality control ability
Measure harmonic content in signal
By adjusting Power Frequency ripple or AM
Modulation,
High Frequency Output
Dual Sound Crosstalk, Main/Sub
Stereo Separation, L/R
LG
47