Kenwood KVT-915DVD Service Manual page 65

DV
QQ
3 7 63 1515 0
1
TUNER UNIT (X86-367x-xx)
CN1
VMUTE 24
Lch 23
AGND 22
Rch 21
AGND 20
VR 19
VG 18
2
X25-A/2- VB 17
CN11
TV 16
NC 15
3/4
M:S/DK 14
BIL/I 13
D
ST/BG 12
AM/FM 11
L2 10
SCL 9
SDA 8
GND 7
NC 6
NC 5
T8.5V 4
V5V 3
CROMA8.5V 2
AUX IN 1
3
C107
0.1
TE
L 13942296513
∗
VR102
100K
4 ∗
R110
27K
D101
C109 0.022
∗
L107
∗
1.5uH R178
∗ ∗
C112 C159
1000P
∗
C113
5
6
Q104
22K
22K
www
CAUTION : For continued safety, replace safety critical components only with manufacturer's
.
recommended parts (refer to parts list).
Indicates safety critical components. To reduce the risk of electric shock, leakage-current
7
or resistance measurements shall be carried out (exposed parts are acceptably insulated from
the supply circuit) before the appliance is returned to the customer.
DW
L.P.F
C234
1000P
IC203
R214
15K
5
VMUTE
BIN+
2.5V 6
BIN-
2.5V 7
BOUT
8.5V 8
V+
VR
VG
VB
C238
120P
IC204
MS/DK
R218
BIL/I
27K 5
ST/BG
BIN+
2.3V
2.5V
6
BIN-
SCL
2.5V 7
BOUT
SDA
8.5V 8
V+
L.P.F
C243
47u16
+
AUXIN
L101
∗
R105
C101
R102
0V
220P
0V
6.8K
TP4
R101
1K
SMET
4.0V
23
FLOUT
4.1V 24
VREF
3.5V 25
SVA
0V 26
FLAB
3.0V 27
FLIN
0V 28
GND3
29
SDOUT
6.8V 30
MOUT
CF101
8.4V 31
VCC3
∗
R177
7.4V 32
OSCIN1
∗
R143
180
0V 33
OSCIN2
∗
∗
X101
R179
D102
D103
R117
3.3V
10K
0V
R130 100K
R121
R128 100K
R126 100K
VR101
5K
∗
Q105 Q106
B
22K 22K
VR101
RF-AGC
22K 22K
∗
A
x ao
y
i
DX
8
NOISE CANSELER
IC202
/TV MPX
17
TEST2
∗
18
C233
R226
ATC
1K
19
1000P
MS/DK BOM
∗
0V
R227
20
4
4.7K
TEST3
V- ∗
R213 R225
2.5V
3 15K 1K 21
AIN+ BIL/I BLED
∗
R224
2.5V
1K
22
ST/BG SLED
2
AIN-
C220
1 2.5V
1
23
AOUT
BVSL
C219
1 24
BVSR
C237
C218
1
25
120P
VREF
∗
0V
C217
1
26
4
DS
V-
∗
R217
2.5V R229
27
3 27K ∗ SUBC
AIN+
C216
2.5V
1
∗
2
C214 C215
AIN-
0.01 0.01
28
2.5V
1
SUBG
AOUT
29
TEST4
C213
30
TEST5
10u16
31
TEST6
+
32
VCC
4.9V
TP3
Q Q
SIF
R173
3 6 7 1 3
47K
1.8V
8.4V 4.1V
2.0V
C108
0.01
11
SMTC2
10
AOUT
C110
9
SMTC1
0.1
8
VOUT1
∗
4.3V
TP2
∗
Q101
∗
IC101
7
VOUT2
VIF & SIF
DEMODULATOR
3.5V
R175 47K
6
AMDCA
R176 33K
0V
5
AFT
R113 47K
4 1.9V
SSC
R112 33K
3 3.3V
VIF2
2 3.3V
VIF1
1
VCC1
3.3V
8.4V
TP1
10K
TP1
IF-AGC
u163
.
DY
KVT-915DVD,925DVD,935DVD
KVT-945DVD,965DVD
2 9 9 4 2 8
R219
82K
C246
Q202
0.47
16
47K
TEST1
15 2.4V
0V ROUT
∗
47K
C232
4.6V
C245
14 2.5V
LOUT
∗
Q201
0.47
C231
47K
0V
C229 0.01
13 2.0V
ATCL
47K
C230 0.01
0V 12 2.0V
ATCR
1.6V R204
11
ASC ∗
1.7V
R209 470K 82K
∗
C228 100P
10
1.7V SGT
C227 1
9 2.3V
MO ∗
C222 1
2.2V 8 ∗
2.2V SEP
∗ R210
R206 12K IC201
7
SUB ∗
2.2V
33K VR201
1.8V
AM
10K
0V
6
GND DEM.
R208 470K
4.9V
C226 56P
5 0V
MGT
3.0V
R207 330K
4 1.6V C225 0.1
AGC
3 3.0V C224 0.01
MGH
∗
C223 1
2 2.2V
CUE
∗ ∗ ∗
C221 R221 R228
1
COMP
∗
2.1V
R222
1 5 0 5 8 2 9 9 4
∗
C
∗
L102
R111
R114
180 CF102
330
Q103
R103
470
R104
470
Q107
22K
Q102
22K
R109
R133
330
4.7K
R131
10K
R123
∗
10K
D
∗
L103
C115
56P
R116
2.7K
∗
R181
10K
∗
R180
m
1 2
CN3
co
SMET,AGC
X86-367x-xx (1/2)
DZ
9 9
12
R223
1K
15
C207
0.022
2.2V
0V
2.2V
4.9V
C201
10u16
+
C202
0.01
∗
E
L106
10uH
2 8 9 9
∗
C8
F
0.1
0V
IC1
2.8V
2.7V
5.0V
5.1V
2.2V
1.7V
IC1
VIDEO SW
L10
600
0V
IC2
0V
3.8V
15kHz
65