Kenwood KTC-V500E Service Manual page 9

A B
ELECTRIC UNIT (X25-928x-xx)
C701 B.U. DETECTION
2200u16
+
1
C704 C700 R706 R707
D702
0.01 0.01 10K 22K
+B
AVR
IC700
D700
IN OUT BU+5V
CMN
D708
DC/DC
IC701
2 REGULATOR
L701
1 8
A+8V DRIVE FB
2 7
4700uH
NC2 NC7
3 6
NC3 NC6
4
5
A+8V VCC GND
POWER SW
8V AVR
F700 Q701 Q703
5A
Q701
DRIVER
3
10K
19 (E) TYPE ONLY
Q700
47K
V+5V
BU+5V
4
76
77
78
79
SP MUTE
80
81
VDD
82
VDD
83
84
85
86
87
TIME
88
89
5
90
R827
100K 91
92
93
94
TEST
95
96
97
98
R802
100 99
99 SCL
R803 100
100 SDA
100
V+5V
6
19
∗
CN2
1
VCC BU+5V
RESET 2
(SCK) 3 39
FLASH3
(SQ) 4 38
FLASH2
(SI) 5 37
FLASH1
TEST 6
GND 7
7
BU+5V
P100
C D
J100
2 4 6 8 10 12 14 16
3 5 7 9 11 13 15
1
+B
D709
Q706
D710
(E) TYPE
ONLY
A+8V
R713
1.2K
A+8V
Q702 8V AVR
AVR
IC702
R710
R702 15K
VIN VREF
220
GND
+B +B
5V AVR
T+8V
A+8V
5V AVR
A+5V
Q704
Q705
V+5V
BU+5V
(K)TYPE
(M)TYPE
ONLY
ONLY
(K,M)
R835
TYPE
100K
ONLY
R808
100K
50
AM/FM
49
L2
48
47
MC CLK 47
46
SC DATA 46
45
MC DATA 45
44
SC REQ 44
43
R824 100K
42
R823 100K
41
R822 100K
40
∗
IC800
39 R816 100
FLASH 3 39
SYSTEM u-COM
38 R817 100
FLASH 2 38
37 R818 100
FLASH 1 37
36
AVREF 1 BU+5V
35
34
33
A VSS
32
31
30
29
28
27
R821
26
S-METER
100K
(E) TYPE ONLY
R820
100K
R807
100K C804 0.1
R819 1K
(K,M) TYPE ONLY
X800
12.228MHz
Q800
C801
R809
22K
330u6.3
IC801
47K
+
22K
Q800
RESET
C800
PANEL/BASS
IC
0.1 RESET SW
BU+5V
E F
18 20
17 19
C530 C531
2200P 2200P
V+5V
R517 C532 C508
360 10u16 180P
+
R509
47K
A+8V
IC502
OPERATION
AMPLIFIER
Q500
18
2.2K
Q500,501
AUDIO
MUTE
Q501
R512
10K C509 47K
1000P
10K
IC504
NOISE CANCELLER
T+8V
A+8V
A+5V
V+5V
+B
(K,M) TYPE ONLY
∗
R345 R346 R343
10K 10K
Q306
Q307
Q306,307
S-METER
DC AMPLIFIER
C301
0.1
VR300
SMET
C306
100K
0.01 23
FL OUT
(K,M) TYPE ONLY 24
VREF
25
SVA
26
FLAB
(E) TYPE
CF300
ONLY 27
OUT
FL IN
D302
28
IN
GND 3
R340 29
SD OUT
30
C338 (K,M) 1K
M OUT
TYPE ONLY 31
0.01
+B VCC 3
C304 32
OSC IN 1
33
10P
OSC IN 2
C305
(K) TYPE
10P ONLY X303
W301
30.550MHz
X300
D300
22.7/21.8MHz
R307
X301
10K
22.2/21.3MHz
X302
D301
21.7/20.8MHz
R304 100K
R305 100K
R306100K
Q300-302
+B
CLOCK SW
Q300 Q301 Q302
22K 22K 22K
(M,E)
RF
TYPE
AGC
22K 22K 22K
ONLY
1
G H
(E) TYPE ONLY
VIDEO VIDEO
AMPLIFIER AMPLIFIER
IC202 IC203
C241 C236 C238 C232
220u6.3 5 4 220u6.3 220u6.3 5 4 330u6.3
B OUT A OUT B OUT A OUT
+ 6 + + 6 +
3 3
BSAG ASAG BSAG ASAG
L202 7
2
V+ GND 7
2
C237 C239 C242
10uH
V+ GND
0.22 0.22 8 0.22
C233 8 1 1
A IN B IN A IN
B IN
0.1
V+5V
(K,M) TYPE
ONLY
C529
0.22
A+8V R349
C321 18K W302
0.22
T+8V
A+8V
A+5V
V+5V
+B
L300
C300
SMET AGC
47u16
+
1 2
C311
CN300
0.01
∗
R308 R309
33K 39K
TP4
SIF
TP3
R310
6.8K
C316
11 0.01
SMTC 2
10
A OUT
C317
9
SMTC 1
0.1
8
V OUT 1
VIDEO
TP2
7
V OUT 2
6
IC300
AMDCA
TV VIF/SIF
5
AFT
R319
47K
4
SSC
3
VIF 2
2
VIF 1
1
VCC 1 +B
IF AGC
TP1
(K,M) TYPE
R311 10K
R336
ONLY
10K
+B
R334
1.8K
I J
C324
0.022
C333
2200P
IC301
C323
C334
10u16
2200P
+
C322
AM
0.01
DETECTION
(E) TYPE
ONLY
T+8V
A+8V
A+5V
V+5V
4.7K
L304
VIDEO BUFFER
10uH
4.7K
R337 Q308 Q309
180
VIDEO
IN OUT
R338 MUTE
330
(K,M)
∗
TYPE CF301
R339
ONLY
330
R322 R332
Q304
470 470
Q303,304
VIDEO BUFFER
Q303
R324 R323
330 330
(E) TYPE ONLY
22K
Q305
R326 R327 R325
22K
10K 10K 4.7K
D303
R328
10K
∗
L303
C329 56P
R331 2.7K
Q305
SYNC PIF SW