Sharp MD-M3 Service Manual page 31

/TUNER SECTION
LOADSW
CD RES
AMP FAN
AMP MUTE
CE
CL
DO
VSS
VDD
MD RES
MD-ST
SERCH
V LOAD
KDATA
MDDATA
DSCK
TIMER
LED
SWR11
DEMO
SW
VOL DOWN
+B7
80 79 78 77 76 75 74 73 72 70 69 68 67 66
71
81
82 S49
/PG1
83
S47/PF7
S50/PG2
84 S51/PG3
85
P00
86 P01
87 P02
88 P03
ICD01
89 VSS2
IX0288AW
90 VDD2
SYSTEM MICROCOMPUTER/
91 P04
FL DRIVER
92 P05
93 P06
94 P07
95 P10/SO0
P11/SI0
96
/SB0
97 P12/SCK0 P16/T1PWML
P17 /T1PWMH/BUZ
P13/
98
SO1
99
100
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
+B7
+5V(D)
+B9
+5V(D)
+B8
+5V BACK UP
Figure 31 BLOCK DIAGRAM (5/5)
TO TRANS/POWER/PRE SECTION
SWD28
JOG SW
VOLUME
VOL UP
+B7
–B1
65 64 63 62 61 60 59 58 57 56 55 54 53 52 51
50
S18
49
/PC2
VP
S17/PC1 48
S16/PC0 47
VDD3
46
S15/T15 45
S14/T14 44
S13/T13 43
S12/T12 42
S11/T11 41
S10/T10 40
S9/T9 39
S8/T8 38
S7/T7 37
S6/T6 36
S0/T0
S5/T5 35
P73/INT3 /T0IN
S4/T4 34
S3/T3 33
32
31
KEY1
KEY MATRIX
SWD01-SWD08
SWD10-SWD16
KEY2
SWD19-SWD26
(SWD23 MD-M3 ONLY)
KEY3
– 31 –
MD-M3/M1
TO TRANS SECTION
–B1
–30V
F1
1
FLD01
F1
2
FL DISPLAY
3
4
S1
5
S2
6
S3
7
S4
8
S5
9
S6
10
S7
11
S8
12
S9
13
S10
14
S11
15
S12
–30V
16
S13
17
S15 S14
18
S16 S15
21
S17 S16
22
S18 S17
23
VDD S18
24
S19 S19
25
S20 S20
26
S21 S21
27
G13 G13
33
G12 G12
34
G11 G11
35
G10 G10
36
G9 G9
37
G8 G8
38
G7 G7
39
G6 G6
40
G5 G5
41
G4 G4
42
G3 G3
QD02
43
G2 G2
QD03
44
G1 G1
QD04
45
46
47
F2
48
F2
49
–30V
–B1
+B9
2
RXD01
REMOTE
REMOCON
1
SENSOR
3
–B1