Kenwood RDX-652 Service Manual page 23

Z
QQ
3 7 63 1515 0
1
CASSETTE
MECHANISM
(D40-1618-05)
A-HEAD
WH2
1
Lch
L-PLAY
2 COM
R-PLAY
Rch
3
2
WH3
L-PLAY
3
B-HEAD
1
Lch
2
3
Rch
4
L-REC
5
ERASE
6
R-REC
R-PLAY
GND
TE
ERASE
L 13942296513
4
5
B
A
MTR
6
+
www
7
AA
RECORD/PLAYBACK UNIT (X28-298X-XX)
E2
1
2
3
IC3
PLAY/REC
HEAD SW
E1
1
2
3
4
Lch
5
6
R63
5.6K
Q13
Q15
R64
5.6K
Q14
Q16
BEAT
CANCEL
CONTROL
C
1 A
2 B
3 PLAY SW1
4 +5V
5 COLLECTOR 1
6 MTR +
SOL
7 SOL 1
SOL
8 SOL 2
9 R-REC
10 COLLECTOR 2
11 PACK 1
12 PLAY SW2
13 COM
14 PACK 2
x ao
15 F-REC
16 CrO2 1
17 CrO2 2
. i
AB
12.2V
C51 10u16
+
+
L1 10mH
C33 220P
L2 10mH
C34 220P
Rch
R/P
Q Q
Q21 CONTROL
3 6 7
BIAS
CURRENT
8.9V
10 1/4W
+B
Q12
L5
Q11
+ BIAS OSC
SENSOR OUT B
SENSOR OUT A
u163
y
AC
2 9 9 4
8
Q23,24,28,29
A PB VR
ON/OFF CONTROL
Q25-27
B PB VR
ON/OFF COMTROL +
IC1
12.3V
R35 C31
15K 10u16
+
R36 C32
15K 10u16
+
1 3 1 5 0 5 8 2 9
Q22
+12V +12V
+B +B
R55
9.3V
+12V
Q1
BIAS AVR
REC:
D4
9.9V
+
NOR: 4.7V
CN3
MTR SPEED A 1
A/B
R73
TAPE SPEED
16K
MTR SPEED B 2
VR5 4.7K
B PLAY SW 3
+5V 4 +5V
5
MTR+ 6
B SOL 7
A SOL 8
R.REC 9 12
10
B PACK 11 11
A PLAY SW 12 10
GND 13 m
A SOL
CONTROL
co
A PACK 14 5
.
F REC 15 4
B CrO2 16 3
A CrO2 17 2
AD
2 8
9 9
+ +
+
+ +
5.7V
+
9 4 2 8 9 9
Q2 Q3
Q8
R76
47K
Q7