Kenwood KRC-19A/G Service Manual page 9

A B C
Q Q
3 7 6 3 1 5 1 5 0
1
GRN WHT
16 8
FRONT L
REAR L GRN/BLK WHT/BLK
15 7
VIOL/BLK GRY/BLK
14 6
REAR R FRONT R
VIOL GRY
13 5
BLU
ANT. CONT
12 4
BLU/WHT
11 3 P. CONT OUT
RED
10 2 ACC J4
YEL BLK
BU 9 1
GND
DC1
(E30-4784-05)
KRC-289 (M)
2
GRN WHT
RL+ 16 8 FL+
GRN/BLK WHT/BLK
RL- 15 7 FL-
VIOL/BLK GRY/BLK
RR- 14 6 FR-
VIOL GRY
RR+ 13 5 FR+
BLU/WHT P. CON
12 4
ANT. CON
BRN BLU/WHT
TEL MUTE
11 3
RED
10 2
3
YEL BLK
9 1
YEL
RED
T E
8 6 L 4 2 1 3 9 4 2 2 9 6 5 1 3
A
7 5 3 1
P-CON
4
8 6 4 2
Q261
B
7 5 3 1 MOTOR+B
WH1
DRIVER
T.MUTE 6
GND 5
D260
MOT GND 4 Q261
13.6V
MOT +B 3
DC2
(E30-4790-05)
KRC-19A/G
10K
5 47K
PACK IN 2
Q260
CAUTION: For continued safety, replace safety
GND 1
critical components only with manufacturer's
recommended parts (refer to parts list). indicates
safety critical components. For continued protection
IC1 : LC72366-9592
against risk of fire, replace only with same type and IC2 : TDA7461ND
rating fuse(s). To reduce the risk of electric shock, IC3 : HD74HC27FP
IC4 : TDA7384A
leakage-current or resistance measurements shall
IC5 : LA3161
be carried out (exposed parts are acceptably
Q50,52,57,61
insulated from the supply circuit) before the
: 2SC2412K or
appliance is returned to the customer.
2SD601A
Q51,261 : 2SB1443
Q53 : DTA114YK
Q54,58 : DTC144EK or
UN2213
6
Q55,59,153,352
Manufacture under license from Dolby Laboratories. : DTA124EK or
UN2212
"Dolby" and the double-D symbol are trademarks of
Q56,60 : 2SB1655(E,F) or
Dolby Laboratories.
2SB1565(E,F) or
w w w
2SB1548(P)
Q150,200,202
: DTC124EK or
UN2212
Q151,260,353,371
: DTC114YK or
.
UN2214
Q201,203,350,370
: 2SB1277(Q,R)
Q301 : DTA144EK or
UN2113
Q320,351 : 2SA1037K
7
Q450,451 : DTC143TK or
UN2216
D E F
J2 16 15 14 13 12
8 7 6 5 4
J4 TOP VIEW
13 11 12 8 4 3 2
9 10 6 7 5 1
1 REQ H 6 A GND 11 DATA H
2 GND 7 RST 12 Lch
3 B.U. 8 Rch 13 CLK
1 5 9
4 CON 9 REQ C
5 MUTE 10 DATA C
2 6 10
R370
13 ∗
4.7K
A
Q370
3 7 11 D370
ANT-CON.
DRIVER
Q371
R371
4 8 12
1K
Q370
1/2W
R412 100
13 R373 R372
R401 C401
1K 22K
10 0.47u50
7
1/2W
+
R411 100
Q371
12
R410 4.7K
ANT-CON.
11
SW
R409 4.7K
32
R402 10 C402 0.47u50
5
+
R408 1K R351
R400 4.7 C400 22u6.3
1K Q350
6
+ 1/2W
R407 4.7K C350
1 3.3u25
R406 4.7K
34 +
R405 100K P-CON.
SW
Q351
R404 100K
14.4V C351
Q353
0.068
R403 100
35
D408 Q352
Q59 C352
D409 0.1u50 D352
+
D405 14.4V
ILLUMI.
Q58
+B SW
D404
D56
Q60
Q61
ILLUMI.
+B AVR
28
41
5V
0V
MOTOR
+B SW
R110 47K
D50 : S2V20 A R108 47K
D51,405,411 ∗
R120 47K
: MA4068(N)-M or
R122 47K
HZS7A3L ∗
D52 : MA4051-L R121 47K
D53,260,261,370,371
: AM01Z or
R132 100K
ERA15-01 or
R103
DSM1SD2
2.2M
D54 : MA4056(N)-M
D55 : MA4091(N)-L
D56 : MA4110-L
R129
22K
D100,150-152,352
: 1SS133 D100
D200 : MA4051(N)-M
D400,401,404,408,409 61
: MA4062-L
62
Q301
R138
CHANGER 63
SIGNAL LINE
22K
RESET
GND LINE
SW
x B LINE a o
y
Q301
(X14-657x-xxx)
47K
i 0V
MODEL NAME UNIT NO. A B R120 R121
47K
KRC-289 0-21 YES NO YES
KRC-19A/G 0-22 NO YES NO
G H I
F1 (10A)
SYNTHESIZER UNIT (X14-657x-xx)
11 10 9
3 2 1
IC4
POWER IC
R50
3.3K D50
1/2W
0V
C50
3300u16 14.4V
+
D52
C52 R54 R52
0.01 10K 33K D51
R57 Q50
43K R156
B.U. DET.
180K
61 62
40
C159
100u10
5V
0V
+
Q51,52 +
C160
TH1 D151
B.U. 5V AVR 10u16
+
C53
100u16
+
R58
Q350 D54
22K 5.0V
P-CON.
0V
DRIVER
C54 Q51 Q151
0.01 IC3
MUTE
C55 Q52
10u10
+
Q351,352
C56
P-CON.
100u6.3
PROTECT.
+
Q151
Q53 47K 0V
Q153
SVR DISCHARGE SW
41
R160 47K
10K
Q153
SW 5V Q Q
PRE MUTE
R159 100K
DRIVER 3 7 6
DRIVER
1
2
44
R127
C101
47K
0.01
R126
47K
24
41 23
5V
SW5V
0V 22
42
ILL 5V
0V 21
43
5V
0V 20
44
5.0V
BEEP 5V
45 5V 0V 19
0V
18
46 5V
5V 0V 17
47 0V
48 5V 16
ROLL OFF 0V SCL
15
49 5V
MOTOR
NOISE CANCELLER
14 0V
50
SEL1
51 13
CH CLK 13
SEL2
0V or 5.0V
12
52
IC1 DATA H 12
11
53
11
EQ MUTE SYSTEM u-COM DATA C
5V R116 4.7K
54 10
5V SD 10
FWD/REV 0V 0V
9 R119 2.2K
55
PLL CLK 9
5V 8 R118 2.2K
56
PLL DATA 8
REMO 0V
57 R114 22K
R105
7 1K
58 SDA 7
R131 10K
59
6
4V
60 L CE 6
0V 5V 5
61 0V L CLK 5 11
ACC DET 5V
4
4 12
62 5V 5V 0V L DATA S J3
B.U. DET 0V 0V 3
L DATA L 3
63 2 0V
S METER GND
C102
64 1
PANEL
XIN
22P
u 1 6 3
C103
4V
22P
0V .
0V
J K
REAR PREOUT
8 9 2 4 9
J5
C452
0.01
∗
B
R452 R453
30K 30K
Q450 Q451
+
PRE
MUTE
SW
+ +
L3 4.7uH
Q150
C150
47u10
+
C151
0.01
IC2
IC3
1 14
VDD
5V
13
8.2V 0V
2
5V
0V
3 5V
3.4V 0V
5V
4 12 0V
5 11
10
6
9
5V
IC2
5V
0V
ELECTRIC
7 VOLUME
8
GND
C163 0.01
3 1 5 1 5 0 8 9 2
0V
14.4V
C157
150P
C156
R125
0.033
5.0V 47K
R65
2.2 1/2W
14.2V 8.2V
Q56
R66
2.2 1/2W
COM+B
AVR Q57
Q55 R63 R64
1K 1K
Q320
PANEL 5V
SW
Q54
Q54,55
R321 R320 47K
COM
27K 47K
+ +
+B SW
47K
Q320
C320
47u6.3
+
IC5
TAPE EQ AMP
9 7 5 3 1
10 8 6 4 2 P1
m
c o
L M N O
8 2 9 9
ANT
L4
52mH
8.2V
J1
FM+B
DRIVER
Q201
FRONT-END
A1
(X86-3320-11)
AM+B
DRIVER
R203
1
22K
RF GND
2
FM+B SW
FM ANT
22K
Q203
26
3
C200 AM ANT
22K
AM+B 0.01
4
Q200 OSC GND
SW
8.2V 5
Q202 FM+B
8.2V 6
AM+B
22K
25
7
OSC GND
8
22K
OSC GND
9
OSC GND
10
OSC GND
11
VT
8.2V 12
PLL+B
13
IFC OUT
14
8 SDA
15
9 SCL
Q150
D200
16
E-VOLUME DIG GND
MUTE SW
L8 4.7uH
5.1V 17
VDD 5V
C206 47u10 18
IF2 GND
+
19
8.2V
IF2+B
3.8V(FM),3.5V(AM) 20
AUDIO OUT
21
10 SD
22
63 S-METER
8.2V 23
IF1+B
23
IF1 GND
4 9 8 2 9 9
54
ME1 (D40-1136-05)
S3 S2
CN1
FWD
C251 R251
0.047 10K 6 6
FWD/REV Ref.99 T.MUTE
1
GND
2 REV 5 GND 5
HEAD R
4 MOT GND 4
3
Rch
M1
+
HEAD COM
M 3 MOT+B 3
4 HD1
S1
C3
47u6.3 HEAD L
Lch
5
2 PACK IN 2
C6
100P 1 GND 1
KRC-19A/19G/289 (1/2)
X13-
J1
2/2
A
KRC-19A/G,289