Kenwood KRC-29Y Service Manual page 11

A B
Q Q
3 7 6 3 1 5 1 5 0
1
2
3
T E
L 1 3 9 4 2 2 9 6 5 1 3
4
5
6
w w w
7
C D
IC1 : UPD780058GC229
IC2 : TDA7407D
IC4 :
IC6 : TDA7479D
IC7 : TDA3682ST
IC8 : HD74HC27FP
IC9 : HA12221F
IC10 : LB1930M
IC11 : S-80830ANNP
IC12 : BR24C01AF
Q1,301 : DTC124EUA
8 6 4 2
Q10,11,20,101,201 A-PART
7 5 3 1
: 2SC4081
Q40 : DTA124EUA
Q50 : 2SA1036K
Q151 : DTA114YUA
8 6 4 2
Q221-224
B-PART
: DTC143TUA 7 5 3 1
Q251 : DTC114YUA
Q501 : 2SD1760
Q551 : 2SB1443
Q552 : DTC114EUA
D1 : S2V20 A
D2,3 : 1GWJ43 (TPB5)
D4,551 : AM01Z
D10,11,401,402
: MA4068 (N) -M
D20 : MA4051 (N) -M
D30 : MA4047-M
D40,101,251-253
DC1
: 1SS133
(E30-4792-05)
D102 : B30-1567-05
D153,157,159-161
403,404,409-411
: MA4062-L
D301 : IMSA-6801
SIGNAL LINE
GND LINE
B LINE
(X14-641x-xx)
MODEL NAME UNIT No. A B C J5 J6 IC4
KRC-479R
2-70 YES YES NO YES TDA7386
KRC-479RY
KRC-481R 0-21 NO YES YES NO TDA7386
KRC-379R
KRC-379RY 2-71 NO YES YES NO TDA7384A
KRC-35R
KRC-29Y 2-72 NO NO YES NO TDA7384A
(X14-641x-xx)
R111,
MODEL NAME UNIT No. R112 R113 R114
146
KRC-479R
2-70 YES NO YES NO
KRC-479RY
KRC-481R 0-21 YES NO NO YES
KRC-379R
KRC-379RY 2-71 YES NO YES NO
KRC-35R
KRC-29Y 2-72 NO YES YES NO
CASSETTE MECHANISM
(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
Lch
HEAD L 8 7 M+R
6 GND
GND 7
T-END
F/R 6
5 T-END
SUPPLY
PACK IN 5
REEL STBY
SUB(+) 4
4 STBY
SUB(-) 3
3
MODE+B 2
2 GND
MODE 1
1
x a o
y
. i
E F
SYNTHE SIZER UNIT (X14-641x-xx)
J4
1 5 9
2 6 10
13
3 7 11
4 8 12
A
B
D404
D401
7
D402
5
D403
6
D409
R413 100K
D410 R414 100K
D411
R412 100K
GND2
SUB MOTOR
DRIVER
IC10
0V 6 5 0V
PGND SGND
7.6V 7 4 5.0V
7 OUT2 IN2
Q Q 8 3 5.0V
NC IN1
3 7 6 3
7.6V 9 2
9 OUT1 NC
10 1 7.7V
NC VCC
77
R518 R520
330K 5.1K
C516 R516
0.01 12K
R536
CN1
22K
MODE 1
R535
470
3.8V 31
MODE+B 2 NFI (R)
32
C509
SUB(-) 3 9 R IN (R)
1u50
33
SUB(+) 4 7 RIF
+
34
PACK IN 5 64 F IN (R) 3.8V
0V 35
F/R 6 57
36
GND 7
3.8V 37
HEAD L 8 F IN (L)
3.8V 38
HEAD COM 9 V REF
39
R IN (L)
HEAD R 10
Q551,552
3.8V 40
NFI (L)
CN2 MAIN
MOTOR SW
1
GND 2
3
R556 470
STBY 4
R513 C513
R554 470
150 22u6.3
T-END 5
+
C515 R515
0.01 12K
GND 6 R517 R519
Q552
330K 5.1K
10K
10K
R552
Q551
u 1 6 3
M+B 7 1K
1/2W
.
G H
2 4
8 9 9
C40 0.01 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
5V IC8
9
0V
14 5.0V
7
1 VDD
13
R1
2
5V
D1
0V 4.7K
3
12 R2
11
4 4.7K
C1
10
D4 D3
3300u16
5
9
+
6
5V
0V
0V 7
8 7
GND
9
5V 5V
0V 0V
MUTE
CONTROL
LOGIC
R32 22K R22 47K
C30 0.01 C20 0.01
D30
Q20
ACC
DET.
Q40
PREOUT
MUTE DRIVER
D40
Q501
MOTOR DRIVER
AVR
R537
58
22
59
1 5 1 5 0 8 9 2
Q501
20 4.0V
C506
MS GV (S)
0.01
19
MA OUT
18
C505
MSI
0.22u50
17 4.0V
MS DET
+
IC9
EQUALIZER
IC2
5V 16 7.9V
AMPLIFIER
1V VCC
15
54
MUSIC
5V
14
0V S/R (MSGV) 55
C502
0.01
13
F/R
12
C501
MTL
11 47u10
0V
+
C203
2.2u50
5V
0V
C205 1
C204 1
m
c o
I J
2
8 9 9
J2
C14 R15
1000P 56K
R11 R16
10K 100K
Q10 Q11
BACK-UP SERGE
DET. DET.
4 9 8 2 9 9
R205
4.7K
Q201
NOISE
DETECTION
∗
B
C201
47u10
+
C202
5V
0.01
0V
3.6V 5.0V
0V 0V 2.5V
E-VOLUME
4.1V
R203
4.7K