Kenwood KRC-16A Service Manual page 10

A B
J4 TOP VIEW
1 REQ H 6 A GND 11 DATA H
1
2 DGND 7 RST 12 Lch
13 11 12 8 4 3 2
3 B.U. 8 Rch 13 CLK
4 CON 9 REQ C
9 10 6 7 5 1
5 MUTE 10 DATA C
1 5 9
J4
2 6 10
13
3 7 11
4 8 12
2
R412 100
R401 C401
10 0.47u50
+
R411 100
R410 4.7K
R409 4.7K
R402 10 C402 0.47u50
+
R408 1K
R400 4.7 C400 22u6.3
+
R407 4.7K
R406 4.7K
+B
3
R403 100
D408
Q58,59
ILLUMI
D409
+B SW
D405
Q59
D404
Q58
D56
Q60
Q61
Q60,61
ILLUMI
+B DRIVER
4
Q260
R260
1K
MOTOR+B 1/2W
DRIVER
Q261
R263 47K R262 47K
D260
WH1
5
GRN
WHT
FL+ 8 16 RL+
WHT/BLK GRN/BLK
FL- 7 15 RL-
GRY/BLK VIOL/BLK
FR- 6 14 RR-
GRY VIOL
FR+ 5 13 RR+
BLU/WHT
P. CON
4 12
ANT. CON
BLU/WHT BRN
TEL MUTE
3 11
RED
2 10
BLK YEL
6
1 9
2 4 6 8
A
BU
1 3 5 7
P-CON
2 4 6 8
B
1 3 5 7 DC1
(E30-4790-05)
KRC-16,191,
7
265L/R,26,291
C D
J2
16 15 14 13 12 11 10
8 7 6 5 4 3 2
∗
+B
A
D370
R370 4.7K ANT-CON.
R55
D52
47K
R350 4.7K
Q49
P-CON.
ACC
R351 1K
DETECTION
1/2W
SW
Q350,353
18
P.CON
DRIVER SW
7
55
Q350
R353
17
1K C350
16
1/2W 3.3u25
63 +
Q353
5 Q351
C351
0.068
6
1 Q352
R381
22K
45
C380
D352
0.01
+B D380
53
Q351
46
P.CON PROTECTION SW
Q352
P.CON PROTECTION
INHIBIT SW
+B
R382 47K
RESET
Q301
+5V
MOTOR
IC6
1 5 5.0V
+B SW
0V 2
0.9V
CD-CH
3 4
RESET
SW
5.0V
∗
R101 47K
58
∗
R102
47K 0V or 5.0V 61
SEL 1
62
62 R CLK
63
63 REQ C
64
PACK IN
0V
65
KEY-REQ
∗
R103 47K
∗
R104 47K 66
SEL 0 0V or 5.0V
0V 67
VSS 0
5.0V 68
VDD 1
+5V
C102
R105 69
X2
15P 6.8K
C103
15P 70
X1
0V
4.19MHz 0V
71
IC
72
0V
5.0V 73
XT1
+5V
74 0V
VDD 0
5.0V 75
AVREFO
R106 76
76 S METER
2.2K
77
∗
PHONE
R107
78
78 NOISE
∗
10K
79
R108
AV CONT
47K
80
1V
0V
60
+5V
E F
SYNTHESIZER UNIT (X14-687x-xx)
9
F1 (10A)
1
+B +B
+
D50
C50 3300u16
+
+B
0V
R52
D51
33K
Q50
BACK-UP
DETECTION
SW
R48
100K
C159
100u10
+
+
C160
TH1 D150
10u16
C53
+
100u16
+ 0V
R58
D54
22K
C54
Q151
0.01
Q51
0V
C55
Q52
10u10
+
Q51,52
BACK-UP
5V DRIVER
Q151
SVR FORCED 5.0V
DISCHARGE SW 0V
Q153
Q53
+5V
R162 47K
Q153
P.ON
PRE OUT
5V SW R159 100K
MUTE SW
1
+B
P5V P5V
+5V +5V
∗
R125
4.7K
5V 5V
0V
R124
40 1K
IC2 CLK
5V R123 10K
0V R122
1K
39
IC2 DATA
38
FM+B
5V
37
5V
AM+B
0V
R121 10K
36 R120 1K
PLL DATA
35 R119 2.2K
PLL CLK
34
∗
33 0V
IC1 VSS 1
R117
32
5V
SYSTEM u-COM 0V SD
31 4.7K
30
4V
29
4V
28
1.6V FF/REW 28
27
5V
MOTOR 27
0V
5V
26
25
24
5V
0V 0V or 5.0V 23
22
21
G H
REAR PRE OUT
J5
R452
30K
0V
Q450,451
Q450
IC4
PRE OUT
MUTE SW
IC4
POWER
ANPLIFIER
+
IC2
E-VOLUME
2.5V
MUTE LOGIC
IC3 14 5.0V
+5V
VDD
1
4.4V 13
C152
2 5V
1u50
0V
3 +
4
12
11
5
10
6
9
5V
5V
0V
7 8
GND
C163 0.01
0V
+B +B
P5V P5V
+5V
2 +B
41
R65
2.2 1/2W
+B
R66
2.2 1/2W
Q55
40
Q54
Q320
Q54,55
PANEL 5V 47K
39 8V
SW
SW
38
47K
R321 R320
37 27K 47K
36
Q320
35
32
11 9 7 5 3 1
12 10 8 6 4 2 P1
J3
(X14-687x-xxx)
MODEL NAME UNIT NO. A D E
KRC-291A/G (E)
KRC-291YA/YG (E)
2-70 YES YES
KRC-26A/G (E)
KRC-26YA/YG (E)
KRC-265RG (M) 0-21 YES YES
KRC-191A/G (E)
KRC-191YA/YG (E)
2-71 NO YES
KRC-16A/G (E)
KRC-16YA/YG (E)
KRC-265LA/LG (M) 0-22 YES NO
I J
C452
0.01
R453
30K
Q451
L3 4.7uH
+8V +8V
Q503 Q150
+
NOISE E-VOL
BUFFER MUTE SW
Q150
78
∗
C150
47u10 Q503
+
C151
0.01
3V
0.3V
0V
8.0V
3.5V
4.0V 0V
4V
0V
Q501,
AFC TIME
502
CONSTANT SW
Q501
C506
0.1
C157
150P
Q502
22K
C156
∗
0.033
22K
D
P5V
Q500
AUDIO
OUTPUT
BUFFER
+8V +8V
Q56
Q56,57
8V
DRIVER Q57
R63 R64
1K 1K
+ +
C3
47u6.3
C6
100P
IC5
EQUALIZER
AMPLIFIER
KRC-16,191,265L/R,26,291 (E,E,M,E,E) (1/2)
R107,108, IC1
C158 R101 R102 R103 R104 Q503
125,160 UPD780058GCxxx
100P NO YES NO YES YES YES UPD780058GC211
100P NO YES NO YES YES YES UPD780058GC172
100P NO YES YES NO YES YES UPD780058GC211
0.1 YES NO NO YES NO NO UPD780058GC425