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Kenwood KTC-SR901 Service Manual page 8

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U
V
Q Q
GND BATT
J1
1
2
3 7 6 3 1 5 1 5 0
+5V
8V REGULATOR
SW
8.0V
14.4V
IC12
14.4V
Q2
1
3
IN
OUT
GND
2
BU14V
BU14V
R70 8.2K
1
R71 6.2K
OP-AMP
IC22
3
8
8.0V
R72 8.2K
4.4V
1
OUT
VCC
2
OUT
7
4.4V
R73 6.2K
4
4.4V
2
3
6
4.4V
4.4V
4
5
4.4V
GND
+5V
IC23
D/A
CONVERTER
5.0V
1
16
DIF1
DIF0
5.0V
15
VSS
2
172
LRCK
3.3V
3
14
5.0V
0V
173
BICK
VDD
4
13
5.0V
171
SDAT
VREF
2.5V
5.0V
5
12
PD
VCOM
R202
T E
L
680
8.192M
1 3 9 4 2 2 9 6 5 1 3
6
11
174
MCLK
AOUTL
7
10
DEM
AOUTR
8
9
CKS
TST
165
167
163
164
25
3-STATE BUFFER
IC30
0V
1
VCC
5V
0V
2
14
3.3V
0V
3
0V
4
5V
0V
5
26
3.3V
0V
6
w w w
7
GND
.
W
X
+3.3V
+5V
D5V
D2.5V
D3.3V
BU14V
+8V
BU14V
5V
Q3
REGULATOR
+8V
14.0V
IC16
Q3,IC13
AVR
5V REGULATOR
1
2
IN
GND
5.0V
IC15
IC13
R56
R53
C145
OUT
3
1
R52
220
1
3
15K
1
OUT
IN
BU14V
IN
OUT
3
5.0V
220
1/2W
>9V
1.26V
GND
14.0V
GND
2
2
Q1,10,11
SW
L11
Q10
BU14V
BU14V
R60
Q12,IC17
680K
DC/DC CONVERTER
L12
R62
22uH
0.039 1W
3.3V
6
CS
Q12
D10
Q11
R188
47K
14.0V
7
21
SHDN
L20
C159
8.0V
4.7u25
+8V
8
1.25V
VH
+
14V
8V
9
Q1
R57
EXT
14.0V
10
47K
R75
IN
22
6.8K
D20
+8V
C180
0.01
R86 8.2K
IC24
R94
SW OP-AMP
R85
5.1K
C181
4.3K
10u10
C195 0.01
+8V
+8V
+
R95
C177
0.1
5.1K
C184
10u10
C182
R80
+
10u10
4.3K
+
C183
10u10
R81
+
4.3K
IC24
R96
5.1K
8.0V
R88 4.3K
R97
5.1K
R87
IC25
8.2K
D3.3V
R116 3.3K
CN2
1
SCK
R115 3.3K
2
SSN
R118 3.3K
D30
3
MDO
R122
R117 3.3K
100K
5.0V
1
4
MDI
5.0V
2
+5V
5
DIS
RESET IC
6
FL
R120 100K
7
GND
8
DAP RST
3.3V
14
D3.3V
3.3V
13
0V
12
0V
5V
11
0V
12
10
0V
3.3V
9
0V
IC1 : 70F3033AGC0P7
13
IC2 : CDADSE-P-I-DB
3.3V
IC3 : CDDDT-S-IT
8
0V
IC4 : CDODT-S-IT
IC5 : S1216AXTA75TNJ
IC6 : CDRCT-S-IT
IC7 : CDCDT-S-IT
x
a o
IC8 : CY1049BV3315ZI
y
IC9 :
CDAPT-S-IM
IC10 :
MX29LV160BI1P5
IC11 :
IS61LV641610TI
IC12 : TA78DL08AF
i
IC13 : M5237ML
Y
Z
8
D5V
D2.5V
D3.3V
D3.3V
BU14V
3.3V REGULATOR
COMPARATOR
5.0V
IC14
D46
5
5.0V
1
+5V
2
>2.5V
3
4
3.3V
5.0V
IC33
2.5V
R175
680K
Q13,IC18
DC/DC CONVERTER
Q13
L13
R63
D3.3V
D5V
22uH
0.039 1W
5.0V
IC17
3.3V
5.0V
5
5
OUT
6
OUT
D5V
2.5V
CS
D11
REGULATOR
5.0V
14.0V
7
IC19
SHDN
4
4
C165
3/5
8.0V
3/5
1
2
4.7u25
0V
C160
8
C166
IN
GND
1.2V
VH
3
0.1
+
3
0.1
OUT
REF
14V
REF
5.0V
C158
8V
9
5.0V
C164
3
2.5V
EXT
5.0V
2
4.7u16
2
4.7u16
14.0V
10
VL
VL
IN
1
+
1
+
GND
GND
IC18
Q14
22K
SW
22K
R102
+
C204
R106
Lch
D24
680
10u10
220
17
D21
Q15
D23
+8V
D25
Q17
R100
31
CD-L
Q
Q
1K
3
7
6
3
D47
C289
0.01
R101
MUTE
Q18
CD-R
1K
C205
D22
10u10
R109
IC25
Rch
+
220
R103
OP-AMP
680
D3.3V
+5V
5V REGULATOR
IC35
L51
R160
47uH
22
>9V
1
2
IN
GND
0.7V
OUT
Q19
D45
IC31
22K
+5V
4
5.5V
+5V
22K
3
Q19
INVERTER
D51
D50
Q50
Q51
22K
R200
22K
18K
SW
Q50,51
D1,46
IC14
: UPC2933AT
Q1,11,51 : 2SK3018
D5,30,44
IC15
: TA78L05F
Q2,10
: 2SJ327Z
IC16
: UPC2405AHF
Q3
: 2SB1181F5
D10,11
IC17,18 : MAX1744EUB
Q12
: UPA1716G
D20,50
IC19
: UPC2925T
Q13
: 2SJ518
IC22,25 : NJM4565M-TE2
Q14,19,50 : DTC124EUA or
D21,22,51
D23-25,38
IC23
: AK4351
UN5212
u 1 6 3
IC24
: NJM2123V-TE2
Q15
: DTA124EUA or
D35,36,39,41-43 : MA3062WA
IC30
: SN74LV125APWR
UN5112
D37
IC31
: S-80842ANNP
Q17,18
: DTC114TUA or
IC33
: TLV3701IDBVR
UN5215
D40
IC34
: NJM2406F
Q21
: DTC144EUA or
.
IC35
: TA48M05F
UN5213
D45
D47
AA
AB
2
4
9
9
D5V
D5V
COMPARATOR
IC34
5.0V
2.5V
1
5
D5V
2
R149
4
5.0V
4.5V
3
1M
+5V
5.0V
C236 0.1
C237 0.1
CP8
100K
76
77
78
79
R141
100K
80
CP7
R140
81
0V
100K
100K
82
83
84
85
86
N.C
5.0V
87
87
BUP
5V
R181
0V
100K
88
88
REQH1
R139 100K
89
IC1
CHCON1/STBY
R185
0V
u-COM
100K
0V
90
90
REQC2
91
FIN
W3
5.0V
92
SSR DU
93
N.C
94
N.C
95
R182
N.C
100K
96
N.C
0V
97
97
DATAH1
5V
0V
98
98
DATAC1
0V
0V
99
99
HCLK1
5V
R184
0V
0V
5.0V
100K
100
100
DATAC2
0V
1
5
INVERTER
1
5
0
5.0V
8
9
2
4
Q21
47K
C235
0.1
47K
+5V
+5V
D38
D37
D40
D43
D39
L45
D41
D42
C260
47P
L49
L50
BU14V
1
5
9
1
2
6
10
2
13
3
7
11
3
BU14V
4
8
12
4
J3
: 1SS294
to CD CH
to HEAD UNIT
: 1SR154-400 or
D1F60
: U2FWJ44N
m
1
REQ H
6
A GND
11
DATA H
: MA3056-M
12
8
13
11
7
3
2
GND
7
CH-RST
12
Lch
: DA204U
10
6
2
3
BU+14V
8
Rch
13
CH-CLK
: DAP202U or
4
9
5
1
4
CH-CON
9
REQ C
MA142WA
c o
5 CH-MUTE
10
DATA C
: DAN202U or
MA142WK
: MA3062-M
CAUTION : For continued safety, replace safety critical components only with manufacturer's
: SB05-05CP
recommended parts (refer to parts list).
: MA3051-M
Indicates safety critical components. To reduce the risk of electric shock, leakage-current
!
or resistance measurements shall be carried out (exposed parts are acceptably insulated
from the supply circuit) before the appliance is returned to the customer.
• DC voltages are as measured with a high impedance voltmeter. Values may vary slightly
3/3
due to variations between individual instruments or/and units.
AC
AD
2
8
9
9
1
CN5
FAN
2
1
+5V
5.0V
50
N.C
49
N.C
2
48
N.C
47
N.C
46
N.C
45
N.C
44
N.C
43
N.C
42
N.C
41
N.C
40
N.C
39
N.C
38
5.0V
VDD
+5V
37
VSS
X1 20.0MHz
36
20M
X1
3
35
20M
X2
34
3.3V
C238 1
REGC
33
R132
XT2
100K
32
0V
XT1
31
RESET
30
5.0V
CS
29
SK
28
DO
27
DI
26
SSN
5V
9
8
2
9
9
0V
4
+5V
D36
D35
C220
47P
5
C221
L44
47P
C222
47P
5
9
6
10
13
6
7
11
8
12
J2
KTC-SR901
SIGNAL LINE
GND LINE
+B
B LINE
7

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