Kenwood KRC-309S Service Manual page 11

A B
Q Q
3 7 6 3 1 5 1 5 0
CAUTION: For continued safety, replace safety critical components
only with manufacturer's recommended parts (refer to parts
1 list).indicates safety critical components. For continued protection
against risk of fire, replace only with same type and rating fuse(s). 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.
2
DTA114EK 2SA1036K 2SD1760
DTC114YUA 2SD1819A
DTC143TUA
UN5114
UN5211
UN5214
UN5216
3
2SB1443 2SC4081
T E
L 1 3 9 4 2 2 9 6 5 1 3
4
DTA124EUA DTA114YUA
DTC114EUA
KRA102S
5
LB1930M
6
w w w
7
C D
WHT
GRN
8 9
FRONT L REAR L
WHT/BLK GRN/BLK
FRONT L 7 10 REAR L
GRY/BLK VIOL/BLK
FRONT R 6 11 REAR R
GRY VIOL
FRONT R 5 12 REAR R
ANT. BLU
ANT. CONT 4 13
CONT
BLU/WHT
P.CONT P. CONT 3 14
RED
ACC
ACC 2 15
BLK YEL
GND 1 16 BATT BU14V
DC1
(E30-4786-05)
RX-380
WHT GRN
8 9
FRONT L REAR L
WHT/BLK GRN/BLK
7 10
GRY/BLK VIOL/BLK
6 11
FRONT R REAR R
GRY VIOL
5 12
BLU
ANT. CONT
4 13
BLU/WHT
P. CONT 3 14
RED
ACC 2 15
BLK YEL
GND 1 16 BU14V
DC1
(E30-4784-05)
KRC-389/389W/479/489/489G
WHT GRN
8 9
FRONT L REAR L
WHT/BLK GRN/BLK
7 10
GRY/BLK VIOL/BLK
6 11
FRONT R REAR R
GRY VIOL
5 12
4 13
BLU/WHT
P. CON
3 14
RED
ACC
2 15
BLK YEL
GND 1 16 BU14V
DC1
(E30-4783-05)
KRC-309S/409
CASSETTE MECHANISM
ME1 (D40-1150-05)
SW5V
FWD/REV
FWD/REV
TAKEUP
REEL
M2 M1
SUB MAIN
PLAY
M M
HEAD
HEAD R 10
Rch
HEAD COM 9 HD1
7 M+R
Lch
HEAD L 8
6 GND
T-END
GND 7
5 T-END
F/R 6
SUPPLY STBY
PACK IN 5
REEL
4 STBY
SUB(+) 4
3
SUB(-) 3
2 GND
MODE+B 2
1
MODE 1
x a o
y
SIGNAL LINE
. i
GND LINE
B LINE
E F
J4
SYNTHESIZER UNIT (X14-639x-xx)
1 5 9
2 6 10
13
5V
3 7 11
0V
4 8 12
0V
D401
7
D402
5
D403
6
D404
D405
D409
D408
D407
Q501
SUB MOTOR
DRIVER
IC6
0V 6 5 0V
PGND SGND
7.6V 7 4 5.0V
7 OUT2 IN2
8 3 5.0V
NC IN1
7.6V 9 2
9 OUT1 NC
Q Q
10 1 7.7V
3 NC 7 VCC 6
64
W512 0
∗
VR2 R518 330K R516 12K
10K
C516 0.01
PLAY BACK
W511
0
CN1
R514 C514
MODE 1
150 22u6.3
3.8V 31
MODE+B 2 NFI (R)
+ 32
C509
SUB(-) 3 9 R IN (R)
1u50 33
SUB(+) 4 7 RIP
+
34
PACK IN 5 55 F IN (R)
0V 35
F/R 6 52 GND
36
GND 7 GND
3.8V 37
HEAD L 8 F IN (L)
3.8V 38
HEAD COM 9 V REF
39
HEAD R 10 R IN (L)
CN2
1
R513 C513
150 22u6.3 3.8V 40
GND 2
NFI (L)
+
3
R555 470
STBY 4
R553 470
T-END 5
MAIN
MOTOR SW
GND 6 C515 0.01
PLAY BACK
∗
10K R517 330K R515 12K
VR1
Q552
10K
10K
Q551
M+B 7 R552
u 1 6 3
1K
R551
∗
1/2W
CN5
10K
3
.
PB OUT
2
1
G H
2 J2 4
8 9 9
9 10 11 12 13 14
8 7 6 5 4 3
C41
0.01
IC10
14 5.0V
5V
1 VDD
13 0V
2
5V
0V
3
12
11
4
10
5
9
R20
3.3K
6 5V
0V
7 R15
1/2W
8
GND 56K
5V 5V
0V 0V
R16 C14
100K 1000P
MUTE CONTROL LOGIC
R23
R11
10K 39K
C20 0.1
Q11
Q10
SERGE D20
67 DET.
BACK
-UP
ACC
DET.
DET.
R412 Q41
100K
PRE MUTE
DRIVER
SUB MOTOR
AVR
W507
R537
59
22
60
3 1 5 1 5 0 8 9 2
Q501
∗
C216 6800P
∗
C217 6800P
20 4.0V
C506 ∗
MS GV (S)
19 0.01 C214 6800P
MA OUT ∗
18
C505 C215 6800P
MSI
3.8V
17 4.0V 0.22u50 ∗
MS DET
∗ C212 100P
+
∗
IC5
C213
5V
EQUALIZER 16 7.9V
100P
1V VCC
AMPLIFIER
15
MS OUT 48
14
MS GV 43
13 0V
5V IC2
F/R
0V
12 0V
MTL 49
11
DOLBY 50
5V
0V
C203
m
2.2u50
C517
0.1u50
c o
+
C205 1
C204 1
I J
F1
(F52-0006-05)
10A
2
8 9 9
15 16
2 1
C1
2200u16
+
D1
C255
1u50
+
C256 100u10
+
SVR
Q251
4 9 8 2 9 9
C201
47u10
+
5V
0V
C202
0.01
5V
0V
E-VOLUME
R203
4.7K