Kenwood RXD-790 Service Manual page 31

AY AZ
R S
CN4 CN5 CN6
6 5 4 3 2 1 1 2 3 1 2
C35
1u50
( 614 )
R138
u-COM+5V
4.7K
LOADING ROTARY
MOTOR MOTOR
DRIVE DRIVE
IC4 IC5
4.9V
0V 0V 0V
1.1V
R56
R54 R55 10K
4.9V
10K 10K
u-COM+5V
REG+12V
DSP+5.0V
DSP+5.0V
DSP+5.0V
C38 220P
R64 1M
R33
7.5K
C68
3300P 2.5V 24
13 2.5V
RF
TAO
4.9V 23
DSP+5.0V AVDD
0.9V
2.5V 22
14 2.5V C18 0.01
CLTV
SL+
2.5V
C36 1500P 21
AVSS
15 2.5V
R48
SL- 2.5V 20
PCO
C37 R131 6.8K 2.5V 19
FILI
16 2.6V
0.047 3.3K
SLO C20
2.5V 18
R38 330u6.3 FILO
17 1.3V
ISET 4.5V 17
+
18 5.0V 240K VCKI
VCC DSP+5.0V 16
VPCO
19 4.8V
CLK 79
15
20 4.8V NC
XLT 78 14
21 4.8V NC
DATA 77
13
NC
22 4.9V
XRST 12
23 0V VSS
C.OUT 80 11
PDO
24 4.8V
SENS 75
10
TEST
9
VCOI
8
VCOO
7
NC
6
LOCK
5
MDS
D5
2.7V 4
MDP
R123 4.7K 3
MON
2
FSW
5.0V 1
FOK
0V
( 33 )
DSP+5.0V
The DC voltage is an actual reading measured with a high impedance type volt-
meter as the AM/FM signal generator is specified to the conditions as shown in the
list below. The measurement value may vary depending on the measuring instru-
ments used or on the product. The value shown in ( ) is actual reading mea-
sured in the AM made.
BA BB
T
u-COM+5V
C47 47u10
IC9
+
3 4 5 6
0V 1 18 4.9V
( 1 BRKM VCC u-COM+5V
)
0V 2 17 0V
( 2 ) LMF P/N 1
0V 3 16
C61 ( 3 ) RMR VMUTE
0V 4 15 4.9V
( 4 ) LMR MON 24
1u50
0V 5 14 0V
VSS LDC 33
C27 1u50
0V 6
( 6 ) RNF
+
13 R63 100
u-COM+5V CLR 13
4.9V
C30 470P
R103 100
4.9V 7 12
MUTE STB 12
0V 8 11 0V R65 100
M/A CLK 11
9 R66 100
10 4.9V
RST
DATA
EXPANDER
0V
REG+12V
4.9V
R60
10K
R84
Q7
10
0V
R59 L2
1.9V
4.9V
4.7V
3.9K
1uH
IC14
u-COM+5V
REG+12V
DAC
REG+12V
0.6V
4.7V
IC11
INVERTER
2.0V
1 14
VCC R.+5V
X1
13
2
16.9344MHz
3 12
11
4
12
5 10 2.5V
C94 R85
9
6
1000P 680
7
8
GND
2.2V
R.+5V
DSP+5.0V
2.5V R52 100
4.9V
41
XPLCK
42
GFS
2.5V
43
RFCK
2.4V
44 0V
C2P0 44
45
XRAOF
46
MNT3
47
MNT2
48
MNT1
49
MNT0
50
APTR
51
APTL
IC2
52
VSS
(BOTTOM VIEW)
53 2.3V
XTAI
DSP
54 2.2V
XTAO
55
XTSL
56
FSTT
57
C4M
58
C16M
59 4.9V
MD2
60
DOUT
61
EMPH 61
62
4.9V
0V WFCK
4.8V
63
SCOR 63
64
SBSO
30 29
DSP+5.0V
CN9
C42
C90
0.01 0.1
BC BD
u-COM+5V u-COM+5V
IC7 IC6
4.9V
4.9V 1 16 C34 4.8V 1
SI VCC u-COM+5V SW VCC
R69 0.01
0V 2 15 4.8V 0V 2
EMPHA S/L ( 602 ) UNLOADSW S/L
1K 0V 3
4.9V
( 603 ) LOADSW SLSW
R70
3 14 0V 4
DPSS NC NC QH
100 4 13 4.8V 4.7V 5
NC QH ZERO DOWNSW
5 12 0V 6
NC STSW 712 CKINH UPSW
6 11 0V IC6,7 7
CKINH PSSW 711 CK NC
7 10 5.1V EXPANDER 8
CK PA/NTS GND CLR
(PARALLEL
8 9 4.9V
SERIAL)
GND CLR
R67 100
REG+12V
C83 0.01
4.7V
DSP+5.0V
IC8(1/2)
C65 C103 R95
2.3V 10u50 R111 R115 10u50 R93 9.1K
4.7V
+
+ 2.2K 10K 1.3K
2.3V
Q9
R143
-0.9V
5.1K
MUTE
2.3V C62
0.01
C72
470u6.3 R144
Q10
-0.9V
5.1K
+
2.3V
C66 C104
10u50 R112 R116 10u50 R94 R96
2.3V
+ +
2.2K 10K 1.3K 9.1K
IC8(2/2)
DSP+5.0V
DSP+5.0V
21
NC
20
NC
19
NC
18
NC
17
C91 NC
16
0.01 NC
15
VPP
14
( 14 ) HSEL 4.9V
13
C31 HDOUT
IC10
12
0.01 ( 12 ) HDIN
0.2V (BOTTOM VIEW)
11
( 11 HCK
) 4.9V
10
VIDEO CD u-COM
CM
9
XO
8
XI
7
GND
2.2V
X2 8.000MHz
6
OSC1
2.5V
5
OSC2
4
VDD 4.9V
C58 0.1
3 4.8V
VREFH
0V 2
(
2 ) M/A
0V 1
( 1 ) PAL/NTSC
CP1 100K x 6
( 70 )
(
R.+5V R.+5V
C40
100u10
+
D+3.3V
C96 C99
0.1 0.1
28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2
BE BF
u-COM+5V
C33
4.9V
0.01
16
u-COM+5V
R68
15 4.8V
14 4.9V 1K
614
R83
13 4.7V
12 4.9V 100
612
11 0V
611
R162
10
9 4.9V 10K
WH5
DSP+5.0V DSP+5.0V
REG+12V
u-COM+5V
3 8 C63
+ 1 2.2u50
2
- +
R113 -0.7V
Q11
4 R141 D17
9.1K
2.3V 3.6K
-1.0V 0V
2.3V
D9
R50
1K
-1.0V
DSP+5.0V
2.3V Q4
R114
9.1K
R142 2.3V
Q12
6 3.6K C64
2.2u50
- 7
5
+ +
Q4,11,12
MUTE
CONT.
4.9V
DSP+5.0V
DSP+5.0V
Q6
5V AVR
R73
4.2V
2.7K
43
NC
44
NC
45
NC
46
NC
47
NC
48
NC
49
NC
0V
50
NC
51
NC
C107
52
NC
1000P
53
NC
54 5.0V
PAL/NTSCO
55 C108 1000P
MUTE
56
NC
57 5.0V C110
RES 1000P
58 5.0V
VRST
59
NC
60
NC
61 5.0V R158 1K
M_BUSY/READY 61
5.0V
62 4.9V R157 1K
CLDCLK 62
R156 1K
63 0V
C_DATA 63
5.0V
R160 1K
( 64
)
R159 1K
( 76 )
58 )
R.+5V
10.4V
3.3V 5.1V
5.2V 10.4V
3.3V AVR 5V AVR
Q5 Q13
R88
+B +10V
1.5
Q16 Q15 Q14 Q8
4.0V
R121
1
150
5.7V
RXD-790/V860/V890
Y39-2600-20
BG BH
CN7
R135 100
( 63 ) 1 SCOR
( 12 ) 2 IC-STB
R136 100
( 66 ) 3 SUBQ
R106 4.7K
D3
X14-A/2
( 71 ) 4 CD-DATA
-E1
R137 330
( 67 ) 5 SQCK
R108
8/8
4.7K D2
( 74 ) 6 CD-CLK
F
7 PS-SIN
8 PS-LODE1
R107 100
( 69 ) 9 SENS
R105 100
( 72 ) 10 CD-XLAT
( 11 11 IC-CLK
)
12 NC
13 NC
( 13 ) 14 CLR
( 17 )
WH1
R32
11 MOTORGND
4.7K
10 REG+12V
9
u-COM+5V
8 u-COMGND
7 IC-DATA1 X09-A/5
-CN1
6 DPSS
( 3 )
5 DSPGND
5/8
R72 4 DSP+5.6V
G
4.7 1/4W
3 Rch
2 A-GND
1
L-ch
E1
R75 100K
CN13
( 61 8 MBUSY
)
R76 100K
( 63 ) 7 CDATA X14-A/2
R77 100K
-E8
( 64 ) 6 MDATA
8/8
R78 4.7K
( 62 ) 5 V-CLK
H
R79 100K
( 76 ) 4 CBUSY
R147 4.7K
R154
( 18 ) 3 DAC STB
220
D8
R155
( 16 ) 2 IC-DATA
220
R35
4.7K
1 DC-CNT
E5
E6
E7
E8
E4
E9
J2
C57
470u10 R102
VIDEO OUT
+ 75
C88 D15
0.1 D14
P1
C78 C48
0.01 0.1
WH3 P2
RXD-790/
V890 RXD-V860
C98 WH4
X32-B/2 X32-B/2
0.1
-E3 -E3
E2
WH2 5/8 6/8
3
D12
I
2
+ ~
1
- ~
RXD-790/V860/V890(K) (4/8)