Daewoo MC-5920SC, Service Manual

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Limit
1#
2#
3#
4#
5#
1
Frequency range
Low
Mhz
87.5
+/-0.5
87.5
87.5
87.5
87.5
87.5
High
Mhz
108
+/-0.5
108
108
108
108
108
2
Frequency step
Khz
50Khz
00
0
0
0
3
30dB s/n
u@MTP, vol@ref , #sig-O&F@MTP>s/n@max
dbuv
20
26
9/9/8
8/8/9
8/8/8
10/10/10
8/9/10
4
Dial Calibration
All points on Dial printing
Mhz
+/-0.7
0
00
0
0
5
-3dB Freq. Response
sig-F@MTP 60dBuV, Preamp 75us(USA),vol=ref, ^sig- AF=A >o/p v 3 dB, v sig-AF=B>
O
hz
100
200
65
72
67
63
Frequency response = A and B
hz
12k
8k
16k
13
13k
15k
15k
6
min. volume Hum
AC supply / Adaptor, u@MTP , sig@MTP , 60dBuv
mv
NA
< 8
0.75
0.6
0.55
0.6
0.6
7
S/N ratio (Mono)
u@MTP, vol@ref, sig@MTP 60dBuv
db
43
37
42
46
40
42
8
distortion@ 22.5Kc
u@MTP , sig-F@MTP 1mV, #vol=ref,#distortion meter=1khz>THD=min.
%1
2
0.65
0.7
0.7
0.64
9
Stereo THD
With A weighted filter
, u@MTP, sig@MTP, 60dBuV
%
NA
6<
0.65
0.7
0.95
0.85
10
Max output Power
u@MTP , sig-F@MTP 60dBuv, 1khz, ^ dev, vol=max>O/P=A, power =AxA/speaker ohm
W
NA
>2
2.25
2.56
2.89
2.72
11
Auto search accuracy
Full frequency range, sig-O@25dBuV and 60dBuV
step
+/-1
0
12
Auto search sens
sig@LTP , mod 22.5k , auto search from lower OR upper side ,Repeat test for HTP ,MTP
dbuv
24
30
18/18/18
18/18/18
17/18/18
17/18/19
17/18/18
13
Stereo seperation
With A weighted filter
, sig@MTP, 60dBuV
dB
28
20
34
35
34
37
37
14
Stereo indicatior sense
u@MTP, sig-F@MTP, ^sig-O=A> Stereo indicator light ON
dBuv
24
30
14
13
15
14
21
Result