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FB805
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AP301
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2200p
4700p
2200p
4700p
0.22
0.10.1
2.2
6.3V
1k
1k
100p 100p
0.1 0.1
1k 0.1
100
100
1M
AK6417AM
0
100k
100k
0
0
220k
2.2
4.7k 4.7k
220
2.5V
0.22
10
0.22
10
220
2.5V
22k
47k
47k
22k
10
6.3V
10k
47
10k
10k
10k
22k
1
1
1k1000p 1000p
2SA2018TL
100k
10
4V
0.1
10
6.3V
47
6.3V
0
100k
0.1
1M
4.7 4V
0.1
0.1
TA2131FL
(EL)
10k
10k
220p
5P
12P
0
0
AK5354VT
-E2
2.2
2.2
1
2SC4738F-
Y/GR(TPL3)
XP1501
0.1
47k
0.5%
47k
0.5%
22k
0.5%
22k
0.5%
0
1000p
1000p
02DZ2.4-Z(TPH3)
02DZ2.4-Z(TPH3)
0.1
0
C1
E1
E2
E3
E4
E5
E8
E9
E10
E11
BEEP
M
U
TE
SCK0
SDO0
SDI0
DIN1
ADD
T
XBCK
FS256
LRCK
SCK0
S
DO0
SDO0
ZZ1
ZZ2
ZZ3
OPDET
XJDET
XOCTL
NV
PAUSE
SK2
LS
XL
SCK0
LR
XS
B2
B1
XPD
X
CS
SK1
X
HO
LD
D
TCK
VCC
XBUSY
RST
GND
XCS
SK
DI
DO
M
U
T
E
B
E
E
P
RVDD
DTCK
KEY-R
RGND
L
IN
1
R
IN
1
L
IN
2
R
IN
2
V
C
O
M
A
G
N
D
V
A
V
D
P
D
N
C
S
N
C
C
L
K
C
D
T
I
L
R
C
K
M
C
L
K
B
C
L
K
S
D
T
O
PAUSE
XWK1
SET KEY 1
REC
SDO
SCK
DVDD
(4/4)
SET KEY 2
DGND1
S GND
DGND2
B
+
OUT L
P
W
G
N
D
O
U
T
R
AGC IN
D
E
T
BST
NF2
LPF2
NF1
LPF1
VREF
VREF IN
G
N
D
B
S
T
S
W
STB
TCMT
VCC
IN R
IN L
OUTB BEEP
OUTA BEEP
HP-GND
HP-L
HP-R
XWK1
DGND1
S GND
STRB
CP SLCT
RESET
LINE IN
JACK
OPTICAL
RECEIVER
LINE IN
(OPTICAL)
HEADPHONE AMP
SWITCHING
VOLTAGE
REFERENCE
A/D CONVERTER
RESET SWITCH
EEPROM
SWITCH
MODULE
MODULE
LCD
&
SWITCH
HOLD
OFF HOLD
10µH
6-10. SCHEMATIC DIAGRAM – MAIN Board (4/4) –• See page 42 for Waveforms. • See page 43 for IC Block Diagrams.
(Page 40)
(Page 38)