Read Sharp CD-MD3000 (serv.man31) Service Manual online
CD-MD3000H/CD-MD3000W
– 50 –
Figure 50 BLOCK DIAGRAM (4/7)
1
1
12
12
g
i
TO CD PWB
O Q P X
U V W T R
d
f
c
a
+B
IC905
3
2
1
+B
+B
+B
+B
+B
+B
+B
+B
+B
UNA901
DIGITAL
INPUT
3
2
1
IC921
74HCT00F
DIGITAL SIGNAL
SWITCH
14
13
13
7
6
5
4
3
2
1
Vcc
GND
8
9
10
11
12
TO AUDIO
SECTION
+B
+B
F_REC
CST_SW
NC
NC
+
–
SOLENOID
– COM
+MTR
PLAY SW
+5V SENSOR
SENSOR OUT
+SOL
R_REC
M
PLAY
SWITCH
TAPE
MOTOR
CASSETTE
SWITCH
M
1
2
3
4
5
6
7
8
9
2
3
4
5
6
7
8
9
10
11
12
1
2
1
CNP975
FROM
CD PWB
CD DOUT
CNP921
CNP925
Q953
Q952
CNP920
28
27
26
25
24
23
22
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
19
18
17
16
15
14
13
12
11
10
10
9
8
7
6
5
4
3
2
1
8
7
6
5
4
3
2
1
NC
MDDSCK
RESET
KDATA
D_+B(MD)
D_+B(MD)
D_GND(MD)
D_GND(MD)
D_GND(MD)
LOAD_SW
SID
SERCH
A_+B(MD)
REC_LCH
REC_RCH
MD_LCH
MD_RCH
PCONTO
AD_GND
MDDATA
DSTB
P_DOWN
BACKUP
MD_A_GND
MD_A_GND
TO MD
PWB
D_GND(MD)
D_+B
4
3
2
1
3
2
1
4
3
2
1
FROM
MD PWB
FROM
CD PWB
CD_BCK
CD_LRCK
CD_DATA
D_GND
CD_DATA
D_GND
CD_BCK
CD_LRCK
GND
SW901
SPAN
SELECTOR
NC
CD-MD3000W
ONLY
ONLY
50/9
100/10
X902
32.768kHz
Q909
Q908
Q907
Q906
Q905
IC905
KIA7042AP
RESET
Q901
X901
8MHz
CNP970
FFC970
IC901
IX0354AW
SYSTEM
MICROCOMPUTER
CNP901
33
32
31
30
29
28
27
26
25
24
23
22
32
31
30
29
28
27
26
25
24
23
22
FH_A-SW_A
FH_T-SW_C
FH_T-SW_B
FH_T-SW_A
FH_A-SW_B
FH_A-SW_C
FH_A-SW_D
FH_A-SW_E
FH_C-SW_A
FH_C-SW_B
21
20
19
20
19
18
17
16
15
14
13
12
17
16
15
14
13
12
11
10
10
9
8
7
6
5
4
3
2
1
8
7
6
5
4
3
2
1
CD_BUS3
CD_BUCK
CD_CCE
CD_RES
CD_BUS2
CD-RW
CD_BUS1
T-MO_REV
CD_BUS0
T-MO_FOR
CD_L
PU-IN
A_GND
C-MO_REV
CD_R
C-MO_FOR
CD_GND
CD_GND
CD_GND
CD_+B
CD_+B
2
3
4
5
6
7
8
9
10
11
12
CD_GND
A_+10V
A_GND
R CH
A_GND
A_+10V
A_GND
CD
+B
CD_GND
A_-B
L_CH
R_CH
C2B_CL
C2B_DO
C2B_CE
C2B_DI
S-MUTE
VSM
TO AUDIO SECTION
A_+B
PB_MUTE
CD_MUTE
CD-R_SEL
CD_R
CD_L
SIDE-A
CST-SW
LEVEL_L
LEVEL_R
51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70
40
41
42
43
44
45
46
47
48
49
50
31
32
33
34
35
36
37
38
39
LCD E
CD MUTE
AVref1
AVSS
Vref 0
AVDD A
RESET
XT1
XT2
VSS
X1
X2
VDD
TIMER LCD
30 LCD R/W
29 LCD RS
28 POWER RLY
27 N.C.
26 LCD DB7
TEST/Vpp
LCK2
LCK1
JOG-B
KEY 4
KEY 3
KEY 2
KEY 1
KEY 0
BACK LED CONT
LCD DB6
LCD DB5
LCD DB4
DATA
JOG-A
CST SW
CAM SW
B-FP SW
REMOCON
VSM
PROTECT
C FUTA OP
SPAN
C FUTA CL
SYS MUTE
DEST_IN
CE
TUNER DI
TUNER DO
TUNER CL
CLK
CAM-SW
RUN_PUL
MOTOR
SOL
1 2 3 4 5 6 7 8 9 1
30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11
49 SP RLY
50 POWER KEY
CD-SW
NC
GND
SOLENOID DRIVER
RUN PULSE
MOTOR DRIVER
SYS STOP
+5V
SIDE-B
MD SERCH
MD RESET
MD-DATA/RX
K-DATA/TX
MD-DSCK
L CH
RESET
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