Sharp HR-MB3 Service Manual page 18

HR-MB3
A
B
TO_POWER
VCC3.3V
C
GND
POW_ON_SW2
FUNCTION_SW2
D
TO_ASIC
SCL
SDA
AUDIO_MCLK
BCLK
SDATA_OUT
LRCIN
SDATA_IN
LRCOUT
E
POW_ON_SW
FUNCTION_SW
KEYIN
F
G
H
• NOTES ON SCHEMATIC DIAGRAM can be found on page 5-1.
1
R342
0
+B
5 4
1 2 3
+B
C316
1u
+B
+B
+B
2 3
Figure 6-5 SCHEMATIC DIAGRAM (5/12)
IC302
1112B31M
3.1V
REGULATOR
C317
1u
C301
10u/6.3V
+B
(1.42--3.6V)
28 27
D304
RB521S30
D303
1 2
RB521S30
TL300
(2.7--3.6V)
+B
R301
R308
0
100
C300 C302
0.1u
10u/6.3V
+B
R322
0
D301
RB520S30
4
2
4
6 – 5
R313
0
R311
33
C303
0.1u
R316
100K
26 25 24 23 22 21 20 19 18
IC301
3 4 5 6 7 8 9 10 11
+B
C306
0.1u
C307
10u/6.3V
R304
0
+B
R324
0
D302
RB520S30
TL309
TL311
3 4 3
SW302
SW303
MENU/
FUNCTION
POWER ON
1 1
2
5 6
R318
0
C318
0.01u
C319
0.01u
C320
0.01u
C321
0.01u
C310
100u/4V
R317
0
17 16 15
12 13 14
TL301
TL302
C309
0.1u
C308
10u/6.3V
R3
0
+B
+B
R333
22K
R319
0
1 SW300
HOLD
2
3
TL3