SE-U55
SCHEMATIC DIAGRAM (INPUT SELECTOR : LINE/MIC)
L505
Q706
74HCT7007
3
4
Q706
74HCT7007
11
10
Q706
74HCT7007
9
8
Q706
74HCT7007
5
6
Q706
74HCT7007
13
12
7
Q706
74HCT7007
1
2
14
POWER MODE
OPT/COAX
NC
I2C_SDA_D
I2C_SCL_D
MCU_MUTE
UPLED
PROTECT
I2C_SCL_A
I2C_SDA_A
DIG/ANA
INH
Output only
MB89135A
MIC/LINE
MODE
AVR
Avss
EPROM_WR
WIN/MAC
CDCD+
ONK/KORG
P_ON_RST
CDCRST
DRC_DA
DIT_C3
SRC_RST
DIT_C15
WAV/DIR
DIT_C2
SRC_LD
CLK
X1A
AVcc
Nch Open drain
Vss
X0A
Vcc
X1
X0
MOD1
MOD0
RST
Q701
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
S703
X701
4MHZ
S701
S702
E904
P702
Q708
74HC4053
0X 12
0Y
2
0Z
5
1X 13
1Y
1
1Z
3
A 11
B 10
C 9
GND
8
INH
6
VCC 16
VEE
7
XCOM 14
YCOM 15
ZCOM
4
P381
L383
L382
L381
L754
NCH-1470
D301
SFPJ63
D701
1SS352
Q384
RN1402
R381
0
R508
R509
R507
R384
R383
R380
100K
R330
100K
R379
33
R329
33
R348
39K
R327 8.2K
R328
39K
R378 39K
R398
39K
R377
8.2K
R396
470
R395
470
R390
560 R391
560
R753
0
R730
10K
C309
105M
C359
105M
C541
C542
101J
C521
C529
C522
C520
C519
C517
C518
C706
104Z
C702
104Z
C705 104Z
C703
104Z
C704
104Z
C701
104Z
C755
103K
C372
47/16
C322
47/16
C360
22/6.3
C310
22/6.3
C321
10/16
C371
10/16
C306
470/6.3
Q383
NJM3414A
(1/2)
3
8
2
1
Q383
NJM3414A
(2/2)
5
6
4
7
Q382
RN1444-A
Q381
RN1444-A
R326
50K
(A)
(1/2)
R326
50K
(A)
(2/2)
D702
UDZ3.3B
Q704
BR24C16F
GND
4
S0
1
S1
2
S2
3
SCL 6
SDA 5
VCC 8
WC 7
Q705
BR24C16F
GND
4
S0
1
S1
2
S2
3
SCL 6
SDA 5
VCC 8
WC 7
Q754
TC7WU04
6
2
R754
6.8K
R718
10K
R715
10K
R716
10K
R717
10K
R708
10K
R703
10K
R704
0
R743
0R
70
2
10K
R706
10K
R746
15K
R701
2.7K
R700 10K
R705
10K
R713
10K
R709
390
R710
470
R711
820
R729
10K
R707
0
R744 6.8K
R745
3.9K
Q385
RN2401
Q711
RN2401
C
D
CDCRST
MCU_MUTE
MIC/LINE
INH
MODE
CDCD+
P_ON_RST
OPT/COAX
WIN/MAC
WIN/MAC
+5D
I2C_SDA
I2C_SCL
ONK/KORG
PROTECT
POWERMODE
EPROM_WR
EPROM_WR
I2C_SCL_D
I2C_SDA_D
I2C_SCL_A
I2C_SDA_A
DIG/ANA
I2C_SCL_A
I2C_SDA_A
EPROM_WR
OPT/COAX
CDCRST
UP_LED
SRC_DA
I2C_SCL_D
MCU_MUTE
I2C_SDA_D
DIT_C3
MODE
DIT_C2
I2C_SCL_A
DIT_C15
I2C_SCL_D
WAV/DIR
INH
I2C_SDA_A
I2C_SDA_D
MIC/LINE
DIG/ANA
RESET
SRC_LD
SRC_RST
CLK
(NO USE)
(NO USE)
NO USE
DIGITAL
507-509
ohm
542
384,
383,
R381,
529,
522,
520,
C518,
M24C16
M24C16
ANALOG
MONITOR
INTERNAL
OPT/COAX SW
INPUT SELCTOR
MIC
LINE
PHONES
WIN/MAC SW
