Kenwood KACX 20 Service Manual
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Extracted text from Kenwood KACX 20 Service Manual (Ocr-read)
Page 2
KAC-X2O
BLOCK DIAGRAM
(X08432)
I- FILTER ISF I
so LPF/OFF/HPF OFF/15/25 O
I AMP |C7r 13.15 P WER AMP
|C12 '01 I02 '045 I BAgé 0241 02017229
LINE IN L I HPF 'SF BOOST +
I 407200Hz 15,25Hz 4071mm :0 SP OUT L
LINE OUT L - V I
IMO/ST '03 : i I
I LPF : : I
(X) 407200Hz 5
'SIéIg/IP I Ic1 . ; IC4,5 i I
LINE IN Fl ' HPF 'SF 33%)831' +
I 407200Hz 15,25Hz 4071mm SP OUT Fl
LINE OUT Fl I J 47°
_____R;O;______ 06017606
CONTROL CONTROL ' a PrCON
fGAIN f=407100Hz
I GAIN=or1aoB
40 BATT
+ :-
L15V D.D. CON. GND
|C5,QG*14
COMPONENTS DESCRIPTION
0 PREAMPLIFIER UNIT (X08-4320-10)
Ref. No. Application / Function Operation / Condition / Compatibility
|C1 HPF
|C2 Phase inversion amplilier (Lch only)
|C3 LPF
|C4 |.S.F 15Hz
IC5 |.S.F 25Hz
0 AUDIO UNIT (X09-8570-10)
Ref. No. Application / Function Operation / Condition / Compatibility
|C5 DC/DC converter
ICG Temperature detection comparator
|C7,8,13 Bass boost amplifier
|C9 For bass boost gain and frequency adjustments
|C12,16 Input isolation amplifier
|C15 Bass boost mix amplifier
01,2 :15V AVFI
Q3~8 FET for DC/DC converter