Sharp CD-MD3000H

– 49 –
CD-MD3000H/CD-MD3000W
Figure 49 BLOCK DIAGRAM (3/7)
IC501
BU4066BCF
INPUT
SELECTOR
11184
3561213
ERASE
HEAD
RECORD/
PLAYBACK
HEAD
R-CHL-CH
PB_MUTE
CD-R_SEL
S-MUTE
VSM
C2B_DI C2B_CE C2B_DO
C2B_CL
X
W
U
V
R
T
O
Q
TO MICOM SECTION
Q508
Q507
JK501
Q509
Q502
Q501
IC502
LC75341
AUDIO PROCESSOR
IC503
NJM4558M
OPE AMP.
R-CH
L-CH
–
–
+
+
– –
+
–
+
–
+
+
–
+
–
+
CD/MD_R
TUNER_R
TAPE_R
AUX_R
IC502
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
ROUT
LBASS
LSEL0
CCB
INTERFACE
R1
R2
R3
R4
RSEL0
RIN
RTRE
RBASS
VREF
VDD
CLK
L1
L2
L3
L4
LIN
LTRE
LOUT
VSS
CE
DI
AUX
DECK
TUNER
CD
A_+B
A_-B
L_CH
TO MICOM
SECTION
VSM
C2B_DO
C2B_CL
C2B_DI
C2B_CE
CD/MD_L
TUNER_L
TAPE_L
AUX_L
REC_R-CH
TAPE_L
TO MICOM
SECTION
TO MICOM
SECTION
CD_R
CD_L
8
7
6
5
4
3
2
1
–
+
+
–
a
d
f
g
i
k
l
+B
+B
-B
SWITCHING
SYSTEM MUTE
REC_L-CH
R_CH
R_CH
FROM
MAIN PWB
TO POWER
SECTION
IC101
CNS940
Q119
Q120
IC102
BA3126N
HAED
SELECTOR
Q101
Q102
CNP102
Q116
Q114
Q115
CNP101
IC101
AN7345K
PLAYBACK AND
RECORD/PLAYBACK AMP.
SWITCHING
BIAS OSC.
REC MUTE
REC MUTE
SWITCHING
9
8
7
6
5
4
3
2
1
REC_MUTE
REC_CONT
REC_L-CH
REC_R-CH
A_GND
TAPE_R-CH
TAPE_L-CH
REC_BIAS
A_+10V
M_+10V
A_GND
M_GND
ERASE
T2_R2
T2_R1
T2_L1
T2_L2
24
23
22
21 19
18 17
16
15
14
13
12
11
10
9
8
7
6
4
3
2
1
L-CH
L-CH
R-CH
Vcc
ALC
GND
ALC
RIPPLE
Nor/CrO2
–
+
–
+
Hich=T1
+
+
–
–
Hich=CHROME
+B
1
2
3
4
5
6
7
REC_L-CH
A
C
1
2
3
4
5
6
7
8
Q503
Q504
AUX INPUT
MD_RCH
MD_LCH
2
1
1
2
3
4
5
6
7
1
2
3
4
5
6
1
2
3
4
5
6
IC501
BU4066BCF
10