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Kenwood KRC-21SA Service Manual page 2

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3 7 6 3 1 5 1 5 0
C153,R207
C154,R206
ANT.
J1
F/E
RF GND
FM ANT
AM ANT
RF GND
FM+B
AM+B
OSC GND
OSC GND
OSC GND
OSC GND
VT
Q201
PLL +B
FM+B
IFC OUT
Q203
SDA
SCL
AM+B
R205
DIG GND
VDD 5V
5V
IF2 GND
IF2 +B
A1
AUDIO OUT
SD
T E
L 1 3 9 4 2 2 9 6 5 1 3
S-METER
IF1+B
FM: 400mV
IF1 GND
AM: 170mV
CME1
TAPE MECHA.
MAIN
M
IC5
CM1
EQ. AMP.
S1
Lch
COM
PACK IN
Rch
S3
FWD
8V
REV
S2
T-MUTE
(FF/REW)
Lch
PLAY
www
HEAD
Rch
(X16)
.
AM BPF
FM BPF
IC1
SDA
SCL
FM+B
BEEP
AM+B
AMP. STBY
SVR
SYSTEM u-COM
AMP. MUTE
8V
PLL-SDA
PLL-SCL
MUTE
ANT CON
SD
ACC DET
S-METER
B.U. DET
P.ON
ILL
P CON
TAPE
B.U.5V
Q320
L/R
PAN 5V
55.6mV
5
IC1
LCD DRIVER
x
a o
10
ED1
y
LCD
KEY
PAN IN SW
RST SW
i
8
IC2
Lch
Rch
AM
MPX
OUT LF
LEVEL
MP IN
E-VOL.
OUT RF
OUT LR
SDA
SCL
OUT RR
IC3
MUTE
Q Q
3
7
6
3
B.U.5V
B.U.5V
D380
Q301
Q53
Q49
RST
SW 5V
SW 5V
B.U.5V
ACC DET.
Q50
Q54-57
Q350,351,370
8V
8V
Q58-61
ILLUMI.
Q51,52
B.U.5V
B.U. 5V
u 1 6 3
.
2
4
9
9
8
J4
8
CD/MD
CHANGER
Lch
IC4
Rch
POWER IC
8V
B.U.
J2
1200mV
STBY
SVR
MUTE
AC GND (BEEP)
Q450,451
1
5
1
5
0
8
9
2
4
REAR
J5
PRE OUT
PRE
MUTE
Lch
Rch
J2
FM :1781mV
AM :546mV
ANT CONT
ANT CONT
TAPE :1681mV
CD/MD-CH :3529mV
P-CONT.
ACC
B.U. DET.
B.U.
P-CONT.
m
c o
2
9
9
SP OUT
FRONT Lch
FRONT Rch
REAR Lch
REAR Rch
9
8
2
9
9

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