Sharp MD-X7H Service Manual page 76

MD-X8H
MAIN PWB-A(2/3)
A
CNP975
D7
12
D6
11
D5
10
B D4
9
D3
8
FROM
D2
7
DISPLAY PWB
D1
6
CNS775 D0
5
RS
P51 12-A
4
RD
3
WR
2
CS3
1
FROM CNP970
DISPLAY PWB
RES
4
D_GND
CNS752
3
+5V
2
P51 12-B
+13R5V
1
FROM
C CD SERVO PWB
CNS960
CNP900
P47 12-E
GND(D)
1
CAM_SW1
2
FROM
CAM_SW2
3
CAM SWITCH
GND(D)
4
BIM3 CAM_SW3
5
CAM_SW4
P47 11-G
6
CNP980
PU_IN
1
SL–
2
SL+
3
DRF
4
WRQ
5
D RES_CD
FROM
6
CQCK
CD SERVO PWB
7
COIN
CNS980 8
SQOUT
9
P47 8-H
RWC
10
TRY_SW4
11
TRY_SW3
12
TRY_SW2
13
TRY_SW1
14
CNP990
CD_L_OUT
1
CD_A_GND
FROM
2
CD_R_OUT
CD SERVO PWB
3
CD_9V
CNS990 4
E CD_7V
5
P47 9-H
CD_GND
6
M_GND
7
CNP905
KB_CLK_IN/OUT
1
KB_DATA_IN/OUT
2
A/D_SW
3
NAME_IN
4
D_GND
5
FROM MIC PWB
PC_IN
6
CNS610 R1005
7
+5V
P38 1-E
8
PC_OUT
9
D_GND
10
+5V
11
D_GND
12
F
D_GND
13
CNP925
D_GND
FROM MIC PWB
1
PC_DIGI_IN
CNS620 2
D_GND
3
P38 1-H
CNP915
A_11V
1
A_-11V
2
MIC_L-CH
3
FROM MIC PWB
A_GND
4
MIC_R-CH
CNS660A
5
MIC_SW
P38 1-C
6
RLY_OUT
7
8
G
CNP935
EX_MD-R
1
MIC_GND
2
EX_MD-L
3
MIC_GND
4
AUX_OUT-R
FROM MIC PWB
5
MIC_GND
CNS630 6
AUX_OUT-L
7
P38 1-B
MIC_GND
8
AUX_IN-R
9
MIC_GND
10
AUX_IN-L
11
H
• NOTES ON SCHEMATIC DIAGRAM can be found on page 31.
1
INPUT SELECTOR
BU2092F
C901
390P
R905
1 VSS
1K
2 DATA
3
CLK
R906
4 LCK1
1K
DUBB MODE
R904
5
SW1
1K
STOP
6
SW2
SKIP+1
7 SW3
8
SW4
9
SW5
R911
R917
2.7K
3.3K
R912 R918
2.2K 1.8K
+B
L910
100µH
R914
5.6K
R916
5.6K
R915
5.6K
R907
5.6K
R908
5.6K
R909
5.6K
R910
5.6K
+B
Q998
KRC107M
2
3
0V
1
0V
R919
R920
12K
R921
22K
R922
22K
R923
22K
0V
R903
18K
0V
4.8V
Q901
2SC1740 SR
R974
1K
22K
A/D_SW
R976
1K
+B
19 18 22 21 17 20 16 15
P43 12-B
2 3
Figure 40 SCHEMATIC DIAGRAM (3/20)
IC902
R931
100K PIN
NO. VOLTAGE
+B
VDD
18
R932
1
OE 17
39K
4052A
2
SW12 16
4052B 3
SW11 15
SRS PASS/ON
4
SW10 14
NAME SEL
5
SW9 13
DATA SEL 6
SW8
12
NEXT
7
SW7 11
8
SW5
10
9
10
11
12
13
14
15
16
17
18
A/D_SW
R1084
R1085
27K
R1086
27K
CNP985 5 4 3 2 1
R1062
1K
R1061
1K
R933
1K
31 CAM SW3
R934 1K
CAM SW4
32
R935 1K
33 TRY SW1
R936 1K
34 TRY SW2
R937 1K
TRY SW3
35
R938 1K
TRY SW4
36
X901
37 VDD
8MHz
R1057
MAIN CLK OUT
38
22K
C912
MAIN CLK IN
39
10P(CH)
40 VSS
C949 0.047
41 SUB CLK OUT
SUB CLK IN
42
R940 1K
43 RESET
R941 1K
44 RX IN
R942 1K
P-IN
45
R943 1K
46 NAME IN
R944 1K
47 KB DATA IN/OUT
KB CLK IN/OUT
48
R945
49 PROTECT
1K
R946
50 DSTB
1K
R965
1K
C923
0.022
C922
0.022
+B
R954
220K
RES
1
C915
3
0.022
IC903
PST9140
RESET
2 10 9
P42 1-G
4
– 40 –
1 2 3 4 5 6
CNP999
IC902
0V
0.2V R1071
47K
4.8V
4.7V
0V
0V
CNS
2 1
0V 999A
0V
0V
0V
CNS
2 1
0V 999B
0V
0V
0V
0V
0V
0V
4.8V
27K
R1083
27K
IC901
IX2679AF
SYSTEM CONTROLL MICON
R966
3.3K
R1046
10K
R1047
R1044
10K
10K
IC903
PIN
NO. VOLTAGE
2
1
4.8V
2
0V
3 4.8V
H
5
+B
B A SEL MODE
C0 CD
L L
L H C1 PC
H L C2 OPT
H H C3 PIN
IC904
PIN
NO. VOLTAGE
1
4.7V
2 0.2V
3
0V
4
0V
5 0V
6
0V
7
0V
8 0V
9
2.4V
10
2.4V
11
4.8V
12
4.3V
13
0V
14
0.2V
15
0V
16
4.7V
+B
LOAD_SW
C92
0.02
VSS
100
R
TUNER MUTE
99
NC 98
R
POWER DOWN 97
R
FAN MOTOR 96
R
CCB-CL 95
R
CCB-DI 94
R
CCB-DO 93
R
CCB-CE 92
R
JOG_1 91
R
JOG_2 90
R
DIG_A
89
R
DIG_B 88
R
POWER 87
R
RLY_OUT 86
R
L-MUTE 85
R
S-MUTE
84
R
MIC MUTE 83
R
CD-MUTE 82
R
PU IN 81
6