Sharp MD-R3H Service Manual page 37

SYSCLK,WS,DATA0,DATA1
5V
6 7 8 5 4 3 2 15
IC9904
BU2092F
18
INPUT/OUTPUT
EXPANDER
VR101
REC VOL
VINL,VINR
5 3
12
IC201
1
17
UDA1340
6
AD/DA CONVERTER
11
19
22
13 L3MODE
27
L3CLK
14
L3DATA
15
7 2
26 24 25 23 10
IC501
S81233YX
REGULATOR
1
A–9V
4
3
5
8
IC601
A+9V
LINE AMP
NJM4580D
FL+B
FL+B
MD 7.5V/5V
BACK UP 5V
A+9V
A–9V
FL VP
CH9V
CD7.5V
5V
CD5V
Figure 37 BLOCK DIAGRAM (4/4)
A–9V
4
1 3
7 5
8
A+9V
IC101
A–9V
NJU4560D
LINE IN AMP
A+9V
A–9V
4
1
7
8
A+9V
A+9V
2
3
MUTE
1 Q601 3
Q602
7 5
IC651
HEADPHONE AMP
NJM4560D
Q653
Q505
MD+
POWER
CIRCUIT
Q506
5V SYSTEM
POWER
5V
CIRCUIT
Q504
A+9V
POWER
CIRCUIT
Q503
A–9V
POWER
CIRCUIT
Q502
Q501
Q507
Q508
Q509
– 37 –
1 2 9 4 8 3
11 10
7
IC380
MC14066B
14
ANALOG SWITCH
6 5
13 12
Q380
3
5
IC351
MIC AMP
NJM4560D
MUTE
LINE OUT
Q451
Q452
A–9V
4
J651
HEADPHONES
1
7
8
A+9V
VR651
HEADPHONE VOL
T551
POWER TRANS FORMER
F551
T1A L
250V
F552
T1A L
250V
D508
D555
F553
T1A L
250V
Q510
Q511
MD-R3H
J101
LINE IN
J351
MIC JACK
J101
AC 230V
50Hz