Kenwood KAC-7204 Service Manual page 8

K
KAC-7204
+15V
-15V
TP67
R151
C123 2.2K
4.7u50
+
IC10
(2/2)
5
VR4 10K(C)
7
6
TP60
TP61
BASS
BOOST
6
7
5
IC11
C136
(2/2)
4.7u50
+
R144
B.B 0+18dB (VR) F=40Hz
2.2K
+15V
15V
14.2V
SW14.1V-1
5.0V
DC/DC CONTROL
-2.1V
IC5
P83
-1.0V
1
IN1+ -1.0V IN2+
2.8V
4.5V 2
IN1- IN2-
5.0V
0V 3
FBACK REF
0.1V 4
DTC OUTCTRL
3.3V
C17
5
CT VCC
0V
1000P
TP86
C2
R24
6
12V
RT 3.7V
0V
20K
0V 7
GND E2
C16
14.2V
10u50
8
C1 E1
+
SW14.1V-1
TP90
1
L1
21uH
L2
21uH
SW
14V
1
W5
Q604
R616
3.9K
10.1V TP69
Q605
Q606
P-CON
8
X09-8760-10 (3/3)
L
IC10
(1/2)
3 8
R422
1
2 L
1K
4
R165 2.2K
C125 100P
C138
100P
R423
R
R148
1K
2.2K
3
2 8
1
3
4 IC11
(1/2)
3
IC1,2,6-8,10-12
: BA4560RF
IC5 : TL494IDR
Q1 : 2SC4883ANF
Q2 : 2SA1859ANF
Q3-8 : STP60NF06FP
Q9,12 : 2SC4097
TP89
Q10,11 : 2SA1577
Q13,14 : DTA114EUA
Q15,51,241,242,
281-284,602,605,606,
616,618 : 2SC4081
Q16,215,216 : 2SC1845-A(F,E)
Q17,201-204,217,218
: 2SA992-A(F,E)
Q50,603,614,615,
617,698 : 2SA1576A
Q205-208 : 2SC3478AA(L,K)
16
Q209,210 : 2SA1376AA(L,K)
Q211,213 : KTC3114-PH(A)
Q220,223,224,227
15
: 2SC4468NF
14
Q222,225,226,229
: 2SA1695NF
13
Q251,253,256,258
12 14.2V
: 2SC2235-F
11 14.2V
Q252,254,255,257
: 2SA965-F
Q604 : 2SB1241
Q609 : 2SD1863
10
Q610-613 : 2SC945AA(Q,P)
9
D1,2 : 1N5406-TSC
D3,4 : UDZS16B
D5 : FCH10A20
D6 : FRH10A20
D7,50,152,203-206,251,
260,261,601-603,
605,610-613,615,616,
624,699 : 1SS133
D8,9 : 1SS355
D10,52,101,253,255
: LM1MA142WK-G
D102,254,295,296
: LM1MA142WA-G
D103,104 : UDZS6.8B
D600,617 : B30-1770-05
D604,614 : UDZS10B
D606 : UDZS15B
D607 : UDZS6.2B
D608 : UDZS13B
D609 : B30-1743-05
J3
TP74
FUSE=40A
7 BATT 14.4V
6 GND
TP48
5 P-CON
TP84
4 LCH+
SP
3 LCH-
TP85
OUT
2 RCH-
1 RCH+
P1
SIGNAL LINE
GND LINE
B LINE
B LINE
KAC-7204
M N
2SA965-F
2SA992-A
2SC1845-A
2SC2235-F
2SA1576A
CAUTION : For continued safety, re place safe ty critical com po nents
only with manufacturer's rec om mend ed parts (refer to parts list).
Indicates safety critical com po nents. To reduce the risk of electric
shock, leakage-cur rent or re sis tance mea sure ments shall be carried
out (ex posed parts are ac cept ably in su lat ed from the supply cir cuit)
be fore the ap pli ance is returned to the customer.
• DC voltages are as measured with a high impedance volt me ter.
Val ues may vary slight ly due to vari a tions between in di vid u al in stru-
ments or/and units.
O
B
C
E
2SC4081
DTA114EUA
1
2
3
4
5
6
7