Kenwood 1050MD Service Manual page 21

U V
Q Q
3 7 6 3 1 5 1 5 0
11
5.0V
+5V
R320
100K
IC33
5.0V 4.9V
MEMORY IC
4 3 2 1
4 3 2 1
8BIT MEMORY
LATCH
5.0V
0V
1
5.0V
2
SRCLAT
3
5.2V
EXLAT DSUB2
4
DSUB1
5
5.0V
RD DEMPH
T E
6 L 1 3 9 4 2 2 9 6 5 1 3
WR SRAM DLAT
7
CS DCLK
8
STB DWDT
9
VDD DRDT
10
POWER FLDCE
4.5V EXDT
11
MUTE CENA
12
INI SW2 CTXD
0V
13
SCHNG CRXD
14
S BUSY SCLK
IC31
15
S DATA SWDT
MAIN
16
SCL u-COM SRDT
17
SDA +5V
0V
18
LDON ENCA
19
RMS BACK ON
20
XLAT GND
21
SENS ENCB
4.9V
22
GND BACK V
23
PROTECT INI SW
24
PEFRECT
25
DISC IN TM SW
26
STTLMT KR3
27
PHOT SW KR2
0V
28
REC SW(REC-P) KR1
5.0V
29
5.0V
LOAD IN KR0
2.8V
30 4.9V
LOAD OUT +5V
VDD
2.4V
( )
5
( )
43
R345 100K
5.0V
w w w
X3
12MH
Z
5.0V
.
W X
+5V
-33V
+5V
+5V +5V
+5V
+5V
0V
+
MEMORY IC
5.0V
IC29
5.0V
+5V
R357
0.5V
100K
5.0V
80
79 0V
( )
79 49
78
( )
78 3 3
77 0V
( )
77 2 2
76
(
)
76 1
75
75 2
74
74 1
73
73
72
72
71
( )
36
70 R379 100 4.5V ( )
37
70
( )
38
R380 100
69
69
68 R381 100
68
R387
67 4.9V
67
4.9V 1K R386
66
66
1K
65
65
64
+5V
63 0V
0V 41
63 R355
D2
1K
62 5.0V
0V 42
D1
61
Q23 0V 43
D0
60 4.9V
0V 44
60
Q24 STB
59 0V
45
R370 47K GND
58 2.5V
46
X
R371
47
57 0V 110K R394
BACK UP
57 48
R385 100 100 VOLTAGE
56
56
DETECTOR 49
(
)
55 R384 100 70 CENA
55
50
( )
R383 100 69 CTXD
54
54 51
( )
53 R382 100 68 CRXD
53
52
52
+5V C311 0.01 53
51
C310 0.01
54
55
+5V VDD
+5V
R391 100K 56
R366 100K
57
R368 100K 58
R369 100K
59
R346 100K
R300 100K 60
R347 100K
R348 100K
x a o
y
X
C
i
+5V +5V
5.0V
Y Z
+5V
8
-33V
+5V
+5V
5.0V
SERI PARA
0V
CONVERTER
IC32
0V
R378 100K 0V
R377 100K
R376 100K 5.0V
5.0V
0V
0V
0V 0V
0V
0V
4.5V
4.5V
R361
+5V
100K
0V 0V 0V
R362
100K
5.0V
0V
IC30
Q Q
3 7 6 3
8BIT
MEMORY
LATCH
+5V
0V
0V
20
4.5V 19
18
17
16
15
14
13
12
11
IC28
VSS
4.5V
10
TEXT INPUT X1
2.3V
u-COM
9
X2
2.5V
8
+5V
VDD
7
RESET
6
5
4
3 4.5V
X MODE
2
5.2V 1 4.5V
SCLK 1
0V
78
73
5.1V
u 1 6 3
X
D215
.
+5V
AA AB
2 4
9 9 8
+5V
+5V
14
11
13
X
A
Q26
D.R.I.V.E ON/OFF
CONTROLLER
22
23
21
5.2V
23
1 5 1 5 0 8 9 2 4
OW20N
24
OW20N
25 5.0V
+5V
IISN
26
IISN
27 IC25
STATE
28 SAMPLING
TST1N 2.5V
RATE
29
CON
TST2N
30
R287 RSTN
1K 31
RSTN
32
VSS
2.5V
33
VSS
2.5V
5.0V
D33
0V
2.5V
5.0V
+5V
R290
C321 10
0.1
X
5.2V C316 0.01
X
IC27
8 7
TEST GND
9 6 4.5V
SW1 X MODE
10 5 0V
SW2 MCK 28
C312
4.5V 11 4 5.2V
(
)
0.01 1 SCLK WFCK 22
0V 12 3 0V
( )
78 SRDT SCOR 20
5.2V
13 2 5.2V
( )
73 DQSY SBSO 21
X
1
R295 0V
14
EXCK 23
VDD
(
100K
CD TEXT
X
DECODER
R352 1.8K (
X
m
X (
R297
L3
4.5V 1K
2
( )
3
c o
X X
Q21 Q22
1
X
L4
AC AD
2
9 9
-33V
+5V
+5V
+5V
X R190
470
5.0V
+5V 5.2V
Q26
DIGITAL REC ( )
4
31
0V
NC
32
DAC TESTO
11
9 8 2 9 9
IFM2 33
DAC TEST1
10
34
IFM2
RZ
9
35
IFM1
GND AR
8
IFM1 36
RO+
7
37
ICKSL
IC24
RO-
6
ICLK 38
VDAR D.R.I.V.E.
5
39 (REC)
LRCI 5
VDAL
4
BCKI 4 40
LO-
3
2.6V
41
BCKI
LO+
2
42
DI
GND AL
1 0V
DI 43
LZ
44
RESET N
45
DAC TEST2
2.5V
R239
470
+5V
DIGITAL REC
R244 220
13
+5V
5.2V
DIGITAL REC SEL
(LINE/OPT/COAX)
IC26
16
VCC
5.0V
1
SEL
2.4V
2 15
)
29 1A ST
X
1.5V 3 14 2.6V W2
1B 4A
2.1V 2.5V X W1
4 13
)
49 1Y 4B
X
2.6V 5 12 2.6V R238 470
)
34 2A 4Y
2.5V 6 11 0V
2B 3A
PLAY: 0V REC:1.6V
2.4V 7 10
2Y 3B
8 9 PLAY: 0V REC:1.6V
GND 3Y