Kenwood KDC-CX89 Service Manual page 16

U V
IC1 : UPC7805AHF
IC2 : LC72329-9274
IC4 : NJM78L05UA
IC101 : NJM2060M
1
IC102,302 : NJM4565MD
IC301 : BA1405F
Q1,3 : DTC124EK
Q2 : 2SA1782(T,U)
Q4,5,8 : DTC143TK
Q6 : DTA124EK
Q9 : 2SC4640(T,U)
Q101,201,304,305,308-310 : 2SK2158
Q303 : 2SA1162(GR)
Q306 : 2SK508L
Q307 : 2SC2714(Y)
2
14.4V
R1
F2 3A ZD1
D2
RED (ACC) 2.4K
ACC
+
14.4V 13.5V
3 R7
F1 3A L1
D15
YEL (BATT) 22 2W
+ +
+
BLK (GND)
CN103
BU
13.5V R8
22K
12.6V
Q2
13.4V
4
12.6V
C20
220u25
+
C114
0.015
6.3V
IC102
8
(1/2)
R109 C106 5 R116
1.8K 10u16
6.8K
6
+
7
6.3V
6.3V
6.3V
0V
4
R209 C206
2
1.8K 10u16
5 1
3 R216
+
6.3V IC102 6.3V 6.8K
(2/2)
C214
0.015
R112
75K
C108
1000P
6
Q308
R343
100
C208
1000P
R212
75K
7
CAUTION: For continued safety, replace safety critical components only with manufacturer's recommended
parts (refer to parts list). Indicates safety critical components. To reduce the risk of electric shock, leakage-
current or resistance measurements shall be carried out (exposed parts are acceptably insulated from the
supply circuit) before the appliance is returned to the customer.
W X
RF MODULATOR UNIT
D1,5,14 : DSK10C-ET1
D2,15 : DSK10C-BT
D8,9,12,13,16 : 1SS131
D101,201,302 : DA204K
VD301 : HVU306A-3
ZD1-7 : MTZ6.2J(B)
SIGNAL LINE
GND LINE
+B B LINE
(DATA IN)
8 7 6
(DATA OUT)
5 4 3
(LCD CE)
2 1
CN101
(LCD CLK)
0V (GND)
3.5V
Q1 Q6
22K 22K
22K 22K
0V
Q4 Q5
1.1V
4.7K 4.7K
5.0V
IC1
IN OUT
+5V
GND
+
BU
BU
R9
2.2K
D8
22K
Q3 22K
BU
+12.6V +12.6V
6.3V 12.6V
R106 10K 6.3V
IC101
6.3V 4 C104
R105 12 10u16
IC101 (1/4)
R115 R114 10 10K
(2/4) +
6.8K 6.8K
13
9 14
6.3V
8
11
R108 0V R107 C105
6.3V
+
10K 10K 220u10
+
C205
R208 R207 220u10
+
10K 10K
6.3V
6.3V
6.3V
R214
6
R215 6.8K 7 R205 2
10K C204
5 1
6.8K 10u16
IC101 3
(4/4)
6.3V +
IC101 6.3V
R206
(3/4)
10K
+12.6V
+B
R328
C111
1u50
270
VR301
3.0V R302 12K
+
33K(B)
4.3V
3.9V R348 C306 R301
0V 3.1V 4.7u50
220K 220P 150K
IC301
0V 2.6V
3.5V 0V
3.5V
0V 0V
3.5V
+
Q101
2.1V
0V
Q201
C211
1u50
+
Y Z
X302 4.5MHz
C11
R22
1K
22P
2.2V 1
0V 2
0V
3
R23
1K 0V 4
R25 5.0V 5
1K 0V 6
7
R26
1K 8
9
10
11
4.8V 12
12
5.0V 13
13
5.0V 14
14
4.8V 15
15
0V 16
16
5.0V 17
17
18
(CD RESET)
0V 19
5.0V 20
0V 21
0.6V 22
23
(+5V)
+5V
24
(D.GND)
BU
63
BU
BU
BU
R102
1.5K
BU
+12.6V
6.3V IC302
(1/2)
3
1
2
D302
C312
+
6.3V
0.01
R202
6.3V
+
1.5K
+B
26
74
3.7V
61
Q303 C321 R337 C320
1u50 4.7K 180P
C335 R317 R319
+
2.4K 1.2K
R327 47K
+
R334 R325
4.7K 22K
+
+
Q310 Q304 Q305 Q309
•DC voltages are as measured with a high impedance voltmeter.
Values may vary slightly due to variations between individual
instruments or/and units.
AA AB
+5V
C12
22P 5.0V
5.0V
67
64
XIN COM2
3.0V 2.4V 63 4.6V
TEST2 P ON S1 63
2.8V
62
PG3 RELAY S2 62
61 0V
PG2 SEP ATT S3 61
60 0V
PG1 MUTE S4 60
59
PG0 ALC LOW S5
58
PH3 S6
57
PH2 S7
56
PH1 S8
55
PH0 MUTE1 S9
54
PF3 MUTE2 S10
IC2 17
53
PF2 REQC S11
52
PF1 REQH S12
51
PF0 CHCON S13
CD 50
PE3 DATE IN S14
49
PE2 DATE OUT S15
12
48
PE1 SCK S16
47
PE0 S17
46 16
PD3 DATE OUT S18
45
PD2 CLK S19
44
PD1 RST S20
43
PD0 CE
S21 15
42
PC3 4.5V S22
41
PC2 S23
13
0V
5.0V 0V 5.0V
14
+5V +5V
R11
1K
+
BU
BU BU
12.6V 5.7V
IC4
D14 Q9
4.9V
IN OUT
BU
13.5V
GND
+12.6V
R34 5.6V
12.6V +
1.8K
RELAY
IC302 6.3V
8 R306
(2/2) 10K
5 +
6 R307
7
4.7K
4 R308
4.7K
150K
0V
C310
33P
R35
150
+B
R333 47 C332 5P
C324 15P 4.1V
0.9V 0.7V
4.8V L305
C331 R338
L301 Q307 120nH
C322 C328 1P 4.7K
Q306
220nH
220P 2P
C325
0.01
C326
47u25
+
+5V
AC AD
R14
3.3K (SCK) 13
ZD2
ZD3
R15
R16
100K 3.3K (REQ C) 9
ZD4
R17
1K (DATA OUT) 11
ZD5
R18
R19 to CHANGER
100K 3.3K (DATA IN)
10
CN102
ZD6
R20
1K (REQ H)
1
1 5 9
ZD7
R21 E
2 6 10
4.7K (CD POW) 4
13
3 7 11
4 8 12
(RESET)
7
(MUTE)
5
(D.GND)
2
+
(BATT) 3
BU
E
(Rch) 8
(S GND)
6
(Lch) 12
RL1
ANT IN
CN104
Q8
CN105
to RADIO
KDC-CMP59FM