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A B C D E

KCA-R71FM
FM MODULATOR UNIT
1
C317 7.7V 7.7V IC301
220u10 R110
D101 10K C109
L.P.F. R120 FM ST
+ 0.015 75K MODULATOR
IC101 IC103 C112 R115 C120
R102 5.4V IC102 C114




R304
1.5K C103 8
(1/2) R105 3.8V (1/2) 22u25 2.2K 47u50
3 (1/2) R109 R112 R113
1 10K 3 8 + +
6.8K 6.8K 6.8K 8




C118
R118
2 1 3




2.2K




0.22
1000P
4.7u50 2.1

C102




R104
2 1




10K
4 2
R103 6.8K




4700P
C105 R107 3.8V




C108
C107




180P




14
13
220u10 10K R108 Q102
+ 3.8V




R116


R117




NC
Q103




IN2
3.6K
10K




470
C104 5.4V
ISO
0.1 0V




C115 1
5.4V 3.8V




R121
R217
IC103




47K
470
C205 R207




4700P




C208
C207




180P
R203 6.8K




IN1
NC
2 220u10 10K R208 3.8V (2/2)
+ 7.1V 10K 4
C214




1
6
1000P




2
R209 R212 R213
C202




R204

Q203
10K

R205 6 7
C203 6 7 6.8K 6.8K 6.8K 3.8V 5 2.1
10K




C218
7 5




0.22
4.7u50 3.8V C212 R215 R220 C220
7.1V 5
4 IC102 C209 22u25 2.2K 75K 4.7u50
IC101 5.4V




C301
(2/2) C106 0.015 + +
(2/2)
R202
1.5K




R210 1u50
D201 +
10K



KCA-R71FM ONLY
STK101 R155 R152 C153
100 470 10u25
Lch
+
Q151 Q152
470P
C154


R154




R153
47K




3
4.7K




10K
2.2




LINE OUT
470P
C254


R254




Q251
47K




C253 MUTE
R151
R255 R252 10u25
Rch 10K
100 470 + Q153

C506 +




C502
C501




C505
22P
5.1V




33P




1
1000u16 X501

4.5MHz




80
79
78
77
76
75
74
73
72
71
70
69
68
67
EO1




AM IN
FM IN
VSS




SNS
HOLD
LCTR
HCTR
VDD 5V


EO3
EO2
SKT402 1 5 9 1
4 2
2 6 10 3
to 13 4
CHANGER 5
R511
R512




3 7 11
3.3K
1K
R514




6
3.3K




4 8 12 7
R516



R515
3.3K




8
R552




1K
10K




REQC
9 RE
R513 REQH
4.7K 10 IC501
CHCON
11 u-COM POW
CH DATA C
12 RE
Q502 Q501 CH DATA H
13
4.7K 4.7K CHCLK
C552 0.01

R501 10K




14
R536 100K



C566 100P



C565 100P



C564 100P




C563 100P



ZD518 C562 100P


C561 100P
R534 100K




R531 100K
R551 10K

C551 0.1




ZD511




15
ZD516




ZD513
ZD515




ZD512
ZD514




5 LCD DATA OUT
16
LCD CLK
17
LCD RESET
18
LCD CE
C518
100P
C521




R502 R503
C520


C519
C522




C517
100P


100P

100P


100P




100P




19
10K 10K S
20
R517
1K 21
LCD DATA IN