Sharp MD-X60 Service Manual page 39

912
092F
74HC00F
OUTPUT
NAND GATE
NDER
C970
2.5V
1
5.1V 0.1
18
4.9V
VDD
2
0V
17
OE
2.5V
3
16
SW12
2.5V
4
15
SW11
RA163
14 4.9V
SW10 1K 5
DIG_B
13
2.5V
0V SW9
6
RA161
12
0V SW8
1K
DB_ON/OFF
7
GND
11
0V SW7
PB_MUTE
0V
10
1V SW5
RA160
0
CY952
120P
6 5
3 4
+B
4 3 2 1
3 12 11 10 9 8 7 6 5
0V
100
0V
99
R999 1K
0V
98
SIDE-A SW
R998 1K
CASSETTE_SW
0V
CASSETTE SW 97
R997 1K
0V
96
TAPE CrO2 SW
R996 1K
0.1V
SIDE-B SW 95
R995 1K
5.1V
94
RUN PULSE
VSS 100
R994 1K
5.1V
APSS 93
99
MAIN SW
R993 1K
5.1V
92
SD
R992 1K
5.1V
ROCOMPUTER
TUNER MUTE 91
R991 1K
5.1V
MIC MUTE 90
0V
MIC IN 89
5V
CD-MUTE 82
88
S-MUTE
R988 1K
0V
81
CD_HI-SPEED CCB-CL 87
R987 1K
0V
CCB-DI 86
R986 1K
5.1V
85
CCB-DO
R985 1K
0V
CCB-CE 84
R984 1K
5V
L-MUTE 83
R983 1K
5V
82
R982 1K
0V
81
R981 1K
8 69 70 71 72 73 74 75 76 77 78 79 80
+B
V U T S R Q P O N M L K J I H G F E D
TO MEIN PWB (1/4)
TAPE DECK SECTION
P37 12-E
7
IC921
+B
4.9V
Vcc
14
0V
13
0V
12
4.9V
11
0V
10
4.1V
9
4.9V
8
RA183
47K
+B
RA242
0V
10K
0.7V
RA243
0V 470K
RA244
10K
MDDATA
RA245
4.8V
10K
0V
0V
MAIN_SW R1099 22K DSTB
SIDE-A_SW R1098 22K
0.2V
3.7V
R1097 22K
CRO2_SW R1096 22K RA248
0V
10K
SIDE-B_SW R1095 22K
RUN_PULSE R1094 22K
RA249
APSS R1093 22K
470K
R1092 22K
SD
TUN_MUTE Q953
2SC2412 KR
S_MUTE
CCB_CL
CCB_DI
CCB_DO
R1085
CCB_CE
22K
L_MUTE
D_+B
D_GND
C B A 9 8 7 6 5 4 3 2 1 50 51
13 12 11 10
CNP925
MAIN PWB (3/4) AUDIO PROCESSOR SECTION
CNP303
TO TUNER PWB
P60 6-B
8 9
Figure 39 SCHEMATIC DIAGRAM (4/15)
MAIN PWB-A(2/4)
L911
2.2µH
+B
JPY945
0.047
FM SIGNAL
CD SIGNAL
MD SIGNAL
RECORD SIGNAL
RA232
RA234
3.9K
100K
RA231 RA233
3.9K
100K
+B
L901
2.2µH
52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68
P40 1-E, P40 4-A
10
– 39 –
MD-X60
1
UNA901
2 AUX OPT.
DIGI IN
3
Y
DIG_GND
1
CD_DIGI_IN
2 X
CNS970A
GND
TO MD MAIN PWB
1
MD_D_OUT
2 CNS960
P57 12-B
CNP960
MD FLAT CABLE
(42)
24
MD_RCH
24
MD_A_GND
23
MD_LCH
22
AD_GND
21
R_IN
20
MD_A_GND
19
L_IN
18
A_+B(MD)
17
D_+B(MD)
16
D_+B(MD)
15
TO MD MAIN PWB
D_GND(MD)
14
D_GND(MD)
CN1902
13
D_GND(MD)
P57 12-G
12
D_GND(MD)
11
DSTB
10
MDDATA
9
KDATA
8
SEARCH
7
DSCK
6
MD_ST
5
RESET
4
LOAD_SW
3
2
P_DOWN
1
J1009
CNP950
1
10K
8
D_+B5V
8
D_GND
7
FLD_CS1
6 TO DISPLAY PWB
FLD_DI
5
CFW701
FLD_DO
4
P49 8-G
FLD_CK
3
FLD_CS2
2
FLD_RES
1
1
9
JOG_B
9
JOG_A
8
D_GND
7
TO OPERATION PWB
EXP_DATA
6
EXP_CLK CFW705
5
C905
EXP_LCK3
P49 12-G
4
470/16
M_+B
3
D_+B
2
RX_IN
1
1
J1038
1N4004S
M_+B
14
M_GND
13
M_GND
12
D_+B(MD)
11
D_GND(MD)
10
A_+B(MD)
TO POWER AMP. PWB
9
CNP820
8
CD_9V
7
P52 1-F
CD_GND
6
CD_GND
5
CD_7V
4
D_+B
3
D_GND
2
D_GND
1
15
14
BIAS_GND
13
V_LOAD
12
FAN
11
A_–B
10
A_GND
TO POWER AMP. PWB
9
A_GND
8 CNP810
A_+B(11V)
7
P52 1-C
PROTECT
6
POWER
5
R_CH_OUT
4
A_GND
3
L_CH_OUT
2
RELAY
1
11 12