SCH02_MAIN CPU
GND LINE
POWER- LINE
POWER+ LINE
ANALOG AUDIO R
ANALOG AUDIO L DIGITAL AUDIO
STBY POWER
MCU
EEPROM
A0
A1
A2
GND SDA
SCL
WP
VCC
LD
_C
H
K
R
M
C
_I
N
_R
D
SO
CD_CLOSE_M
N
C
VFD_RST
VFD_DI
VFD_CE
VFD_CLK
A
V
SS
RESET
JRST
EEPORM_DATA
CD_BUS2
CD-DSP_RST
CD_OPEN-M
CD_OPEN-SW
ST
B
_L
ED
A
V
R
H
CD_CLOSE-SW
SI
PO
W
ER
-H
F_MUTE
VCC
V
C
C
K
EY
1
K
EY
0
VCC
EEPORM_CLK
K
EY
2
DIT_CSN
C
S4398_
R
ST
C
S4398_
M
3
U
SB
_T
X
U
SB
_R
X
C
S4389_
M
1
U
PD
63530_
R
ST
D
IS
_O
N
/O
FF
V
SS
JTCK
JTDI
JTMS
JTDO
P_
D
O
W
N
C
H
A
R
G
E_
LE
D
O
PT
IO
N
UPDATE_MDO
C
S4398_
M
0
NC
CD_USB
C
S4398
M
2
U
SB
_C
T
S
U
SB
_R
T
S
DIT_PDN
OSC_IN
DIT_CCLK
OSC_OUT
IPO_SCL
IPO_SDA
REMOTE
GND_D
DIS_CS
DIS_RESET
STBY_LED
ST+3.3V
GND_D
LED_O
+3.3V
FIP2
VP
DIS_ON/OFF
FIP1
DIS_SCL
DIS_SO
KEY0
EX_INT
KEY1
ST+3.3V
M
C
U
U
PD
A
T
E
TO DSP
CLOSE TO DAC
ST+5V
GND_DRV
STBY_CNT
POWER DOWN
DGND
PWR_MUTE
+5V_DRV
+5V_D
ST+3.3V
VP
FIP2
FIP1
+3.3V_D
A_MUTE
P_MUTE
DAC_XSMT
TX
RX
BOOT
GND_D
ST+3.3V
RESET
V
D
D
R
ST
SC
L
N
C
NC
N
C
N
C
SD
A
GN
D
SC
K
MT_STBY
CD_LIMIT-SW
MS/DAC_FLT
CS4398_M1
MOSI
CS4398_M3
CS4398_MCK
GND_DA
POS.NO.
CN2201
N1SG
N1B
K1B
FN
U1B
DESCRIPTION
OPEN
CJP03GA208ZY
CS4389MCK
DIT_CDTI
R
EM
O
T
E
IN
T
O
P
O
W
ER
B
N
280
1
F
LA
SH
ER
B
N
220
1
TO FCB300
T
O
A
U
D
IO
B
N
210
1
1A
1Y
2A
2Y
3A
3Y
GND
4A
4Y
5A
5Y
6Y
6A
VCC
U
SB
_W
P
N
C
VER
R322
N
F
K
U
1K(0.3V)
1.8K(0.5V)
4.7K(1V)
8.2K(1.5V)
OPTION
ST+3.3V
GND_D
SIG
NC
LRCK0
BCK0
DATA0
GND_DA
GND_DA
GND_DA
HP_GAIN1
HP_GAIN2
R
M
C
_I
N
_F
D
N
C
N
C
N
C
N
C
N
C
N
C
N
C
N
C
N
C
N
C
V
SS
VCC
NC
NC
NC
CD_BUS3
CD_BUCK
CD_CCE
VCC
VSS
V
C
C
V
SS
SO
FT
D
EB
U
G
* OPTION => MP NOT USE *
NC
VSS
CAP
SUB_XTAL1
SUB_XTAL2
UPDATE_MD1
N
C
A
V
C
C
H
P_
G
A
IN
1
H
P_
G
A
IN
2
U
SB
_O
C
U
SB
_E
N
ST
B
Y
GN
D
O
U
T
PU
T
V
D
D
GND_DA
GND_DA
8
7
6
5
4
3
2
1
IC
30
0
C
V
IK
24
C
16
SI
R
XA
R
31
7
4.
7K
R
31
9
4.
7K
R320
33
R321
33
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
79
78
77
76
75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
IC302
MB9AF344NAPMC
R346
33
D308
RB160L60TE25
R350
33
R348
33
R347
33
C
31
1
0.
1
C
31
7
0.
1
C319
0.1
C
31
8
0.
1
C310
0.1
C
32
0
0.
1
C309
25V/100uF(ROS)
C
31
2
0.
1
C
32
1
0.
1
R326
10K
R
32
2
1K
R
35
2
0
R345
10K
R344
10K
R351
33
C308
0.1
C
31
6
100
P
R
32
8
0
C
30
4
0.
1
R353
0
R
33
4
10
K
Q302
KTC3875SYRTK
R310
47K
R
31
5
18
K
D
30
3
1SS
35
5
S300
JSS2208A
R
31
6
47
K
R
30
0
47
C
30
0
0.
1
C
30
1
0.
1
D304
1SS355
L300
CLZBLM21PG221SN1
L301
CLZBLM21PG221SN1
L302
CLZBLM21PG221SN1
D
30
0
1SS
35
5
D
30
1
1SS
35
5
D
30
2
1SS
35
5
R308
0
R307
0
R306
0
R305
0
R304
0
R303
0
R302
0
R311
47
1
2
3
4
5
6
7
8
9
10
11
12
13
CN2801
20017WS-13
C
32
7
0.
1
R381
0
C354
0.01
R382
0
C355
0.1
L303
CLZBLM21PG221SN1
C
33
7
0.
01
C
33
8
O
PE
N
C
33
9
0.
01
C
34
0
O
PE
N
C
33
5
0.
1
C
33
6
0.
01
C
33
2
0.
01
C
33
1
0.
1
C
33
0
0.
01
C
32
9
0.
1
C
32
8
10
V
/100
uF
1
2
3
4
5
6
7
8
9
10
11
12
13
14
IC304
TC74VHCU04FT
R370
22
R
36
8
1M
C333 15P
C334 15P
X30
1
16
.9344
M
H
z
R369
1K
R363
22
R366
22
R364
22
1
2
3
4
5
6
7
8
9
IC
30
3
23671011050
A
S_
D
M
C
32
4
0.
1
R361
33
R
36
7
0
R359
33
R
35
6
4.
7K
R
35
7
4.
7K
D309
OPEN
D
31
0
O
PE
N
C
31
5
O
PE
N
C
32
3
O
PE
N
C
32
2
O
PE
N
R
35
4
O
PE
N
R349
OPEN
R
34
2
O
PE
N
D
30
7
O
PE
N
R
34
3
O
PE
N
R340
OPEN
R
33
9
O
PE
N
R
33
7
O
PE
N
R
33
5
O
PE
N
D306
OPEN
R
32
9
O
PE
N
R301
33K
R362
OPEN
Q305
OPEN
Q307
OPEN
Q308
OPEN
Q309
OPEN
Q306
OPEN
C
30
3
470
P
1
2
3
CN2201
CJP03GA208ZY
1
2
3
4
K300
CJJ4N102Z
R372
33
R373
33
Q300
HVTKRA102S
L30
4
C
LZ
B
LM
21
PG
221
SN
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
17
16
18
19
FCC300
10022HS-19C
R313
33
R312
33
R325
47
R327
47
R365
22
L305
CLZBLM21PG221SN1
R375
0
D305
1SS355
3
7
6
5
4
2
1
CN301
CJP07GB113ZY
C
30
2
100
P
Q301
HVTKRC102S
R309
10K
19
18
16
17
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
CN2101
CJP19GA299ZN
R324
47
R360
0
R358
0
R341
0
R338
0
R330
0
R
39
4
470
K
R
39
5
470
K
R
39
6
470
K
9
8
7
6
5
4
3
2
1
CN135
CJP09GA193ZY
C
36
4
0.
1
R371
33
X300
4.0MHz/18pF
C
31
4
27
P
R333
1M
R
33
2
33
C
31
3
27
P
R318
1K
C
30
6
0.
1
C307
0.1
R
37
8
0
R
38
6
0
R
38
7
0
R
38
8
0
C356
10V/22uF
R374
33
R389
0
L30
6
C
LZ
B
LM
21
PG
221
SN
1
C361
10V/22uF
R
39
0
0
R
39
1
0
R
39
2
0
R
39
3
0
R
39
8
O
PE
N
R
39
7
O
PE
N
3 NC
OUT
D
S
VSS
VDD
2
5
4
1
IC301
S80124CLMCJIJT2
R
32
3
0
C
36
2
0.
1
BK100
CMD1A569-V1
R314
100K
R
33
1
10
K
R
33
6
10
K
C
30
5
O
PE
N
X302
OPEN
R233
OPEN
R
23
2
O
PE
N
L307
CLZBLM21PG221SN1
OPEN
R399
OPEN
R242
0
R241
0
R243
0
C
32
6
25
V
/47
uF
R
38
0
O
PE
N
R
24
4
0
R
24
5
0
GND_D
GND_D
ST+3.3V
GND_D
GND_D
ST+3.3V
GND_D
+3.3V_D
GND_D
GND_D
GND_D
CHGND
GND_DRV
+5V_D
+3.3V_D
ST+3.3V.
GND_D
10
FTP2
V
P
VP
FTP1
KEY0
KEY2
DIS_RESET
DIS_SCL
DIS_CS
DIS_SO
STB_LED
DIS_ON/OFF
REMOTE_IN
LD
_C
H
K
C
LO
SE
O
PE
N
C
LS
W
O
PS
W
IN
SW
DR
V
M
U
T
E
B
U
S2
B
U
S3
B
U
C
K
CC
E
D
EC
R
ST
D
A
T
A
0
D
SP
_M
C
K
U
SB
_M
C
K
GND_D
U
SB
_S
I
U
SB
_S
O
U
SB
_S
C
L
U
SB
_C
T
S
U
SB
_R
T
S
C
D
_U
SB
C
D
_U
SB
GND_D
A
M
U
T
E
P_
M
U
T
E
P_
D
O
W
N
ST
B
Y_
C
N
T
DSP_MCK
GND_DA
U
SB
_C
T
S
[1
,2
]
U
SB
_R
T
S
[1
,2
]
D
A
T
A
0
[1
,2
]
D
SP
_M
C
K
[1
,2
]
U
SB
_M
C
K
[1
,2
]
U
SB
_S
I
[1
,2
]
U
SB
_S
O
[1
,2
]
U
SB
_S
C
L
[1
,2
]
C
LS
W
[1
,2
]
O
PE
N
[1
,2
]
C
LO
SE
[1
,2
]
LD
_C
H
K
[1
,2
]
C
D
_U
SB
[1
,2
]
D
EC
R
ST
[1
,2
]
CC
E
[1
,2
]
B
U
C
K
[1
,2
]
B
U
S3
[1
,2
]
B
U
S2
[1
,2
]
DR
V
M
U
T
E
[1
,2
]
IN
SW
[1
,2
]
O
PS
W
[1
,2
]
ST+3.3V
GND_DA
D
IT
_CC
LK
D
IT
_C
D
T
I
D
IT
_C
SN
D
IT
_C
SN
[1
,2
]
D
IT
_C
D
T
I
[1
,2
]
D
IT
_CC
LK
[1
,2
]
GND_D
GND_DA
GND_D
ST+3.3V
GND_D
B
O
L_
R
ST
B
O
L_
R
ST
[1
,2
]
DIT_CSN
DIT_CDTI
ST+3.3V.
DIT_PDN
D
IT
_P
D
N
D
IT
_P
D
N
[1
,2
]
FT
P2
FT
P1
IPO_SCL
IPO_SDA
ST+3.3V.
ST+3.3V.
KEY1
GND_D
GND_D
+3.3V_D
ST+5V
ST+5V
U
SB
_R
XD
GND_D
LR
C
K
0
B
C
K
0
LR
C
K
0
[1
,2
]
B
C
K
0
[1
,2
]
USB_MCK
+5V_DRV
LED_O
+3.3V_D1
U
SB
_W
P
U
SB
_W
P
[1
,2
]
U
SB
_E
N
U
SB
_E
N
[1
,2
]
DAC_XSMT
MS/DAC_FLT
CS4398_M1
MOSI
CS4398_M3
LRCK0
BCK0
DATA0
AMUTE
P_MUTE
GND_D
R
EM
O
T
E_I
N
P_
D
O
W
N
U
SB
_T
XD
U
SB
_R
XD
MCU_RESET
AMUTE
CD_USB
ST
B
Y_
C
N
T
IPO_SDA
IPO_SCL
K
EY
0
K
EY
1
ST
B
_L
ED
D
IS
_O
N
/O
FF
LE
D
_O
U
SB
_W
P
DIS_RESET
DIS_CS
DIS_SCL
B
O
L_
R
ST
U
SB
_R
T
S
U
SB
_S
I
U
SB
_S
O
U
SB
_S
C
L
U
SB
_C
T
S
DIT_CCLK
BUS2
BUS3
BUCK
CCE
DECRST
DAC_XSMT
CS4398_M3
MOSI
CS4398_M1
MS/DAC_FLT
C
LO
SE
O
PE
N
C
LS
W
O
PS
W
IN
SW
DR
V
M
U
T
E
MCU_RESET [2]
ST+3.3V
MCU_RESET
JTDO
JTCK
JTMS
JTDI
JTRST
ST+3.3V
GND_D
GND_D
MCU_BOOT
[2]
GND_D
ST+3.3V.
ST+3.3V.
MCU_RESET
[2]
GND_D
GND_D
DIS_SO
ST+3.3V.
HP_GAIN1
HP_GAIN2
H
P_
G
A
IN
1
H
P_
G
A
IN
2
U
SB
_T
XD
M
C
U
_R
ES
ET
M
C
U
_B
O
O
T
LD
_C
H
K
U
SB
_O
C
[1
,2
]
U
SB
_O
C
U
SB
_O
C
U
SB
_E
N
+3.3V_D
GND_D
GND_D
GND_D
+3.3V_D
K
EY
2
GND_DA
GND_D
0A
CN2201
FCC300
CN2101
CN2801
8
Caution in
servicing
Electrical
Mechanical
Repair Information
Updating