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SE-U55
SERVICE MANUAL
Ref.No.3692
May 2001
USB Digital Audio Processor
SE-U55UP
FUNCTION SELECTOR
INTERNAL LINE MICMONITORDIGITAL
INPUT LEVEL
PHONE LEVEL
MAX
MAX
MIC
PHONES
USB DIGITAL AUDIO
PROCESSORSE-U55
SE-U55
Type USB digital audio processorConnection method USB (Universal Serial Bus Ver. 1.1)Sampling rate
Digital input 32/44.1/48 kHz compatibleDigital output 44.1 kHz
Frequency characteristics 0.3 Hz to 20 kHz (+0/-0.5 dB, LINE OUT)Signal-to-noise ratio 100 dB (A-filter)Total harmonic distortion 0.002% (1 kHz, 0 dB)Output level 1.0 VrmsLine input level 250 mVrmsMicrophone input se4nsitivity 5.0 mVrmsPower supply USB power supply, separately sold DC 7.5 V (exclusive adapter)Current dissipation 400 mAExternal dimensions 50 x 216 x 166 mm / 1 15/16" x 8 1/2" x 6 9/16"Weight 0.7 kg / 1.5 lbs.
Specifications and external appearance are subject to change without notice.
Main specifications
Thank you for purchasing the Onkyo USB DigitalAudio Processor.Be sure to read this instruction manual thoroughlybefore operating the unit and always adhere to theinstructions given within during operation. Also,keep this instruction in a safe place for futurereference.
Instruction ManualUSB Digital Audio Processor
SE-U55
UP
FUNCTION SELECTOR
INTERNAL LINE MICMONITORDIGITAL
INPUT LEVEL
PHONE LEVEL
MIN
MIC
- +
PHONES
USB DIGITAL
AUDIO
PROCESSORSE-U55
AccessoriesThe SE-U55 comes supplied with the accessories shown below. Make sure that theseaccessories are present at the time of purchase. The number in parenthesis is the quantityof that accessory.
This instruction manual (1)Explains operational procedures and the required settings forconnecting the SE-U55 to your computer.
CD-ROM (1)Contains the software for using the SE-U55 with a computerand an on-line instruction manual.
SE-U55 (1)The USB digital audio processor. The SE-U55 converts yourcomputers sounds to professional-level high-quality audiosound.
Audio pin-cord (1)For the analog connection of the SE-U55 to external analogaudio devices.
USB cable (1)For the connection of the SE-U55 to your computer.
CarryOn Music instruction manual (1)Instruction manual for using the supplied software CarryOnMusic.
Note:The power supply for the SE-U55 is supplied through the USB cable from the connected computer.
Registration Card (1) Quick Setup guide (1)
SE-U55
CHASSIS-EXPLODED VIEW
9
10 12
87
13
7
11
14
6
14
2
1557
7
7
U1
19
1719
19
1618
3
Q751
21
20
SE-U55
CHASSIS-EXPLODED VIEW PARTS LIST
REF NUMBER DESCRIPTION PART NUMBERU1 PC BOARD AS, NAAR-7035-1C 1W223535-1C1 CHASSIS 271003922 3TTB+8B(BC), SCREW 8384300883 3P+10FN(BC), SCREW 821430104 SPACER M506RS 272702625 CASE, (L) 291052036 CASE, (R) 291052047 3TTB+8B(UN), SCREW 8389300888 FRONT PANEL 27212266A9 FACET, (SEL) 2819892010 GUIDE, (VR) 2726803411 END CAP, (L) 2812539212 END CAP, (R) 2812539413 KNOB, (SEL) 2832588514 KNOB, (MIC) 2832588415 LABEL, SPEC 2936284716 STANDING AS 2816306617 CUSHION, (DAC) 2814144318 3SMS8W.SW+14B(BC), SCREW 80143319 3TTB+8B, SCREW 83813008820 SHLD PLT (U) 2715046821 SHLD PLT (D) AS 27150467
SE-U55
SCHEMATIC DIAGRAM (INPUT SELECTOR : INTERNAL)
DAC
C9/C15
P401
Q200
2SA1162-Y
Q201
2SC2712-Y
11 10
9 8
13 12
5 63 4
Q357
74HC04
1 2
7
14
Q902SI-3033LUS
GI O
Q903
SI-3033LUS
GI O
Q901
SI-3050F
G
1
INOVC VOS
E903
C200
102J
Q402
CS
8404A
C/SBF 10
C6/C2 4
C7/C3 1
CBL/SBC15
EM0/C914
EM1/C813
FSYNC 7GND18
M021
M122
M223
MCK 5
SCK 6
SDATA 8
TRNPT/FC124
TXN17
TXP20
U 11
V 9
VD+19
C1/FC0 3
12
PRO 2
RST16
Q753
74H
C4053 0X 12
0Y2
0Z5
1X 13
1Y1
1Z3
A 11
B 10
C 9GND8
INH6
VCC 16
VEE7
XCOM 14
YCOM 15
ZCOM4
AIL4
AIR5 CL 47
DA 46
DI1
D62
DI1
O63
DI1S
1
DI2
C60
DI2
D57
DI2
W59
DO1C
51
DO1D 50
DO1W 49
DO2C6
FO
C56
FO
D55
FO
W54
LOCK 48
VDDA13
VD
DD
652
VSSA12
VS
SD
10
53
VS
SD
11
58
VS
SD
12
61
VS
SD
1364
MODEL NO SE-U55/UE-155P901
L752
BLM
21A
102F
L751
BLM
21A
102F
L502
BLM21B221SB
L501
BLM21B221SB
L503
BLM21B221SB
L901
BLM21P221SG
L753
BLM21A102F
L754
NC
H-1
470
L401
47UH
NCH-1479
F901
ICP-S2.3
D903
SFPJ63
D2051SS352
D204
1S
S352
D203
1SS352
D202
1S
S352
D200
1SS352
D201
1SS352
D403
D901
SFPJ63
D902 SFPJ63
D401
1SS352
D402
Q905
RN1402
R511
0
R512
0
R513
0
R514
0
R515
0
R516
0
R517
0
R518
0
R519
0
R502
0
R504
0
R503
0
R407
75
R501
1K
R408
75
R714
0
R907
0
R914
0.22
(1W)
R207
1K
R206
1K
R205
1K
R204
1K
R2022.2K R203
2.2K
R201
4.7K
R200
10K
R905
10K
R902
1K
R901
10K
R913
330
R911
330
R753
0
R904
10K
R903
22K
R751
1M
R912
0
R404
2.2
K
R403
2.2
K
R402
2.2
K
Q904
M51957B
CAP 5GND4
IN2
NC11
NC23
NC3 8
OUT 6
VCC 7
C546
101J
C763
C764
180J
C543
105M
C512
473Z
C511
223Z
C510
102J
C509
331J
C752
104Z
C751
104Z
C540
101J
C539
101J
C538
101J
C534
101J
C535
101J
C536
101J
C537
101J
C530
101J
C502
102J
C503
101JC
505
101J
C506
102J
C507
101J
C508
102J
C501
101J
C504
102J
C413
472K
C417
104Z
C913
104Z
C414
104Z
C202
102J
C201
102J
C768
472K
C767
103K
C766
333K
C753
050C
C904
104Z
C756
104Z
C754
050C
C755
103K
C415
104Z
C765
104Z
C905
1/5
0
C410
0.1
/50
C9100.47/50
C901
10/1
6
C206
100/1
6
C205
10/5
0
C20410/50
C203
10/50
C401
47/16
C903
470/6
.3
D904
SLR
-332M
C
U401
TORX178A
U402
TOTX178
Q751
UDA1325
BC
K61
CLK
27
D+8
D-6
DA
57
GP0/BCKI17
GP1/DI13
GP
2/D
O63
GP3/WSO
1
GP4/BCKO2
GP5/WSI15
P0.0
56
P0.1
58
P0.2
60
P0.3
62
P0.4 64
P0.53
P0.65
P0.77
P2.014
P2.116
P2.218
P2.3
20
P2.4
22
P2.5
23
P2.6
29
P2.7
30
SCL19
SD
A21
SHTCB4
VDDE12
VDDI9
VD
DX
28
V
VR
VR
VS
SA
355
VSSE11
VSSI10
VS
SX
24
WS
59
XT
AL1A
54
XT
AL1B
25
XT
AL2A
53
XT
AL2B
26
PS
EN
31
X751
48M
D406
D405
UD
Z3.3
B
D404
C412
22/1
6
L402
NSRF-2046
Q754
TC7WU04
1 7
4
8
Q754
TC7WU04
6 2
Q754
TC7WU04
3 5
R411 680
R410 680
R409 680
R414
1.5
K
R413
1.5
K
R412
1.5
K
01
7
+3.3D
+3.3A
+5A
RE
SE
T
DI
DO
BCKI
WSI+5D
BCKO
128FS
DIT
_C
3
DIT
_C
2
DIT
_C
15
UP_LED
SR
C_D
A
SR
C_LD
SR
C_R
ST
CLK RESET
WAV/DIR
BCKO
WSO
DO
R714 100
UDDUJJ
BK1608LL241-T
C534-540
R511-519ohm
544-546101J
NO USE
101JC530
UJJ UDD
UJJ UDD
(UDD= )
C905
C543
UJJ UDD
ohm
C502,504,506,508
R502-504
C512
C511
C510
C509
L501-503
C501,503,505,507
0
UJJ UDD
NC
OUTPUT
OPTICAL
INPUT
OPTICAL
1.5A
7.5V
DC IN
COAXIAL
INPUT
OUTPUT
GND
SE-U55
SCHEMATIC DIAGRAM (INPUT SELECTOR : INTERNAL)
L807
4BLH-CUM05R5CN1
Q401
TDA1373H
AIL4
AIR5
AOL19
AOR115
BS 34
CEN 35
CL 47
CLD18
CLI
23
CLO
127
CLO
228
CLO
330
CLO
431
CUS 36
DA 46
DI1
D62
DI1
O63
DI1S
1
DI2
C60
DI2
D57
DI2
W59
DO1C
51
DO1D 50
DO1W 49
DO2C6
DO2D10
DO2W16
EM 37
FO
C56
FO
D55
FO
W54
FS
L25
LD 45
LOCK 48
MU 44
SA 43
TST1 42
TST2 41
VDDA13
VDDA4
19
VDDD17
VDDD211
VDDD314
VD
DD
4
32
VDDD5 39
VD
DD
652
VSSA12
VS
SA
4
20
VSSD18
VS
SD
10
53
VS
SD
11
58
VS
SD
12
61
VS
SD
1364
VSSD212
VSSD313
VSSD417V
SS
D5
24
VS
SD
626
VS
SD
729
VSSD8
33
VSSD9 40
XT
LI
21
XT
LO
22
RST 38
L801BLM21P221SG
L802
L754
NC
H-1
470
F801
ICP-S1.0
D710
1S
S352
R837 0
R819 1.5K
R838 0
R802 15
R801 15
R908
0.33 (1W)
R846 0
R847 0
R415
560
R405
1M
R753
0
R751
1MR404
2.2
R403
2.2
R402
2. 2
C911
104Z
C534
101J
C535
101J
C536
101J
C537
101J
C912
104Z
C768
472K
C419
103K
C418 223K
C409104Z
C405
080D
C406
080D
C403
104Z
C767
10
C76
C753
050C
C754
050C
C755
103K
C402
104Z
C404
104Z
C420
220/6
.3
C401
47/16
X401
33.8688MHZ
X751
48M
P801
+V 1
D+ 3
D- 2
GND 4 D802
UDZ5.6B
D801
UDZ5.6B
4Q754
TC7WU04
6 2
Q754
TC7WU04
3 5
R401
4.7
+3.3D
+5D
D1+
I2C
_S
CL
I2C
_S
DA
D1-
CD
CD
+
+5D
+3.3D
4BLH-CUN05R5BN1
UJJ UDD
0ohmR846,847
L807
NCAR-7035
USB UP
BY MARK ARE CRITICAL FOR SAFETYIDENTIFIED
NOTE
THE COMPONENTS
REPLACE ONLY WITH PART NUMBER SPECIFIED.
.
. VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE. (NO INPUT SIGNAL)
. ALL PNP TRANSISTORS ARE EQUIVALENT TO 2SA1015-GR UNLESS OTHERWISE NOTED.
. ALL NPN TRANSISTORS ARE EQUIVALENT TO 2SC1815-GR UNLESS OTHERWISE NOTED.
. ALL DIODES ARE EQUIVALENT TO 1SS133 UNLESS OTHERWISE NOTED.
. ELECTROLYTIC CAPACITORS ( ) ARE IN F/WV.
. ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED.EX) 030 3pF 330 33pF 331 330pF
u
ALL RESISTORS ARE IN OHMS 1/4WATTS UNLESS OTHERWISE NOTED.
. THE THICK LINES ON PC BOARD ARE THE PRINTING SIDE OF THE PARTS.EX) PRINTING SIDE
CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT..
.333 0.033uF
INPUT SELECTOR : INTERNAL
SE-U55
SCHEMATIC DIAGRAM (INPUT SELECTOR : INTERNAL)
DAC
4BLH-CUM05R5CN1
L504
4BLH-CUN05R5BN1
P303
P302
P301
E902
E901
C307
221K
C305
331K
C374
101J
C324
101J
C366
152J
C316
152J
C368
152J
C318
152J
Q752
74H
C4053 0X 12
0Y2
0Z5
1X 13
1Y1
1Z3
A 11
B 10
C 9GND8
INH6
VCC 16
VEE7
XCOM 14
YCOM 15
ZCOM4
SCHEMATIC DIAGRAMUE-155
L516
BLM21P221SG
L506
BLM21P221SG
BLM21P221SG
L355
BLM21P221SG
L356
BLM21P221SG
L351
BLM21P221SG
L352
BLM21P221SG
L353
BLM21P221SG
L302
BLM21P221SG
L301
BLM21P221SG
L753
BLM21A102F
L754
NC
H-1
470
13
D2051SS352
D204
1S
S352
D203
1SS352
D202
1S
S352
D751
1S
S352
R523 0
R522 0
R521 0
R311
0
R356
0
R355
0
R520
0
R510
0
R372
470
0
R505
0
R303
0
R324
330K
R374
330K
R317
0
R312
0
R322
470
R373
470
R323
470
R309
0
R506
0
R301
330K
R307
4.7
K
R305
680
R304
100K
R302
1K
R308
33K
R392
1K
R306
1K
R327 8.2KR377
R387
6.8K
R337
6.8K
R347
100K
R714
R397
100K
R338
10K
R351
33
R352
33
R388
10K
R314
0
R389 22K
R364
0
R339 22K
R365
33K
R315
33K
R336
22K
R385
82K
R335
82K
R386
22K
R393
33
R343
33
R310
100K
R361
100K
R362
100K
R325
4.7
K
R375
4.7
K
R332
100K
R382
100K
R32010K
R370
10K
R318
2.2K
R319
2.2K
R368
2.2K
R369
2.2K
R321
4.7K
R371
4.7K
R334
33
R394
33
R316
100K
R753
0
R366
100K
(NO
US
E)
R752
10K
C548
101J
C547
102J
C525
102J
C526
101J
C523
102J
C556
101J
C555
102J
C527
102J
C528
101J
C524
101J
C544
101J
C545
101J
C546
101J
C763
180J
C762
104Z
C764
180J
102J
101J
C538
101J
C515
102J
C516
101J
C514
101J
C513
102J
C519
C517
C518
C551
102J
C552
101J
C554
101J
C553
102J
C756
104Z
C755
103K
C303
47/1
6
C302
100/6
.3
C315
47/16
C365
47/16
C352
220/16
C358
220/6
.3
C308
220/6
.3
C363
47/16
C313
47/16
C304 47/16
C311
10/1
6
C757
10/16
C761
220/6
.3
C351
220/1
6
C361
47/16
C362
47/16 C369
47/16
C319
47/16
C206
100/1
6
C205
10/5
0
C331
47/16
C332
47/16
C760 10/16
C758
10/16
C759
10/16
Q751
UDA1325
ALE 50
CLK
27
DA
57
NC1 45
NC2 46
P0.0
56
P0.1
58
P0.2
60
P2.6
29
P2.7
30
RTCB 36
TC 35
VDDA1 38
VDDA2 42
VD
DA
352
VD
DO
32
VD
DX
28
VINL 43
VINR 47
VOUTL 34
VOUTR 37
VREF[AD] 41
VREF[DA] 40
VRN 49
VRP51
VSSA1 39
VSSA2 44
VS
SA
355
VSSO 33
VS
SX
24
WS
59
XT
AL1A
54
XT
AL1B
25
XT
AL2A
53
XT
AL2B
26
EA 48
PS
EN
31
Q301
NJM4565M-D
(1/2)
38
2
1
Q359
NJM2140R
(1/2)
58
6
7
Q358
NJM
2140R
(1/2
)
38
2
1
Q352
NJM2140R
(1/2)
3 8
2
1
Q301
NJM4565M-D
(2/2)
5
6
4
7
Q359
NJM2140R(2/2)
3
2
4
1
Q358
NJM
2140R
(2/2
)
5 6
4
7
Q352
NJM2140R
(2/2)
5
6
4
7
Q389
RN1444-A
Q388
RN1444-A
Q387
RN1444-A
Q386
RN1444-A
Q353
RN1444-A
Q354
RN1444-A
R313
50K
(A)
(2/2
)
R313
50K
(A)
(1/2
)
D206
UD
Z5.6
B
C301
4.7/35
Q754
TC7WU047
Q754
TC7WU04
6 2
+5A
-5V
+3.3D +3.3A
+5A
-5V
CD
CR
ST
U55UJJ 155UJJ U55UDD
R521
R522
R523
UDDUJJ
ohm309, 506505,R303,
C514,516
C513,515
L301,302
L504
Rch
Lch
520
556
555
548, 554,552,
547, 553,551,
510,356,
C523, 527,525,
355,317,312,R311,
528,526,C524,
L351-353,355,356,506,516
(ECHU)
541
Rch
Lch
507-509 ohm
542
384,383,R381,
529,522,520,C518,
521,519,C517,
L505
L381-383
UDDUJJ
ohm
UDDUJJ
Lch
Lch
Rch
Rch
R(1VrmsFS)
L(1VrmsFS)
MIC IN
LINE OUT
R(2VrmsFS)
LINE IN
L(2VrmsFS)
-5V
GND
GND
SE-U55
SCHEMATIC DIAGRAM (INPUT SELECTOR : INTERNAL)
L505
Q706
74HCT700734
Q706
74H
CT
7007
11
10
Q706
74H
CT
7007
98
Q706
74H
CT
7007
56
Q706
74H
CT
7007
13
12
7
Q706
74HCT7007
1214
PO
WE
R M
OD
E
OPT/COAX
NC
I2C
_S
DA
_D
I2C
_S
CL_D
MCU_MUTE
UPLED
PR
OT
EC
T
I2C_SCL_A
I2C_SDA_A
DIG/ANA
INH
Outp
ut o
nly
MB89135A
MIC/LINE
MODE
AVR
Avss
EP
RO
M_W
R
WIN
/MA
C
CD
CD
+
ON
K/K
OR
G
P_O
N_R
ST
CDCRST
DRC_DA
DIT_C3
SR
C_R
ST
DIT
_C
15
WA
V/D
IR
DIT_C2
SR
C_LD
CLK
X1A
AVcc
Nch
Open d
rain
Vss
X0A
Vcc
X1
X0
MO
D1
MO
D0
RS
T
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
74H
C4053 0X 12
0Y2
0Z5
1X 13
1Y1
1Z3
A 11
B 10
C 9GND8
INH6
VCC 16
VEE7
XCOM 14
YCOM 15
ZCOM4
P381
L383
L382
L381
L754
NC
H-1
470
D301
SF
PJ6
3D701
1SS352
Q384
RN1402
R381
0
R508
R509
R507
R384
R383
R380
100K
R330
100K
R379
33
R329
33R348
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
C37110/16C
306
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
BR
24C
16F
GND4
S01
S12
S23 SCL 6
SDA 5
VCC 8
WC 7
Q705
BR
24C
16F
GND4
S01
S12
S23 SCL 6
SDA 5
VCC 8
WC 7
Q754
TC7WU04
6 2
R754
6.8
K
R718
10K
R715
10K
R716
10K
R717
10K
R708
10K
R703
10K
R704
0
R743
0R
702
10K
R706
10K
R746
15K
R701 2.7K
R700 10K
R705 10K
R713 10K
R709
390
R710
470
R711
820
R729
10KR707
0
R744 6.8K
R745
3.9K
Q385
RN
2401
Q711
RN2401
CD
CD
CR
ST
MC
U_M
UT
E
MIC
/LIN
E
INH
MO
DE
CD
CD
+
P_O
N_R
ST
OP
T/C
OA
X
WIN
/MA
C
WIN
/MA
C
+5D
I2C
_S
DA
I2C
_S
CL
ON
K/K
OR
G
PR
OT
EC
T
PO
WE
RM
OD
E
EP
RO
M_W
R
EP
RO
M_W
R
I2C
_S
CL_D
I2C
_S
DA
_D
I2C
_S
CL_A
I2C
_S
DA
_A
DIG
/AN
A
I2C_SCL_A
I2C_SDA_A
EPROM_WR
OPT/COAX CDCRST
UP_LED SRC_DA
I2C_SCL_DMCU_MUTE
I2C_SDA_D
DIT_C3
MODE
DIT_C2
I2C_SCL_ADIT_C15
I2C_SCL_DWAV/DIR
INH I2C_SDA_A
I2C_SDA_D
MIC/LINE
DIG/ANA
RE
SE
T
SR
C_LD
SR
C_R
ST
CLK
(NO USE)
(NO
US
E)
NO USE
DIGITAL
507-509 ohm
542
384,383,R381,
529,522,520,C518,
M24C
16
M24C
16
ANALOG
MONITOR
INTERNAL
OPT/COAX SW
INPUT SELCTOR
MIC
LINE
PHONES
WIN/MAC SW
SE-U55
SCHEMATIC DIAGRAM (INPUT SELECTOR : LINE/MIC)
DAC
ADC
C9/C15
P401
Q200
2SA1162-Y
Q201
2SC2712-Y
11 10
9 8
13 12
5 63 4
Q357
74HC04
1 2
7
14
Q902SI-3033LUS
GI O
Q903
SI-3033LUS
GI O
Q901
SI-3050F
G
1
INOVC VOS
E903
C200
102J
Q402
CS
8404A
C/SBF 10
C6/C2 4
C7/C3 1
CBL/SBC15
EM0/C914
EM1/C813
FSYNC 7GND18
M021
M122
M223
MCK 5
SCK 6
SDATA 8
TRNPT/FC124
TXN17
TXP20
U 11
V 9
VD+19
C1/FC0 3
12
PRO 2
RST16
Q753
74H
C4053 0X 12
0Y2
0Z5
1X 13
1Y1
1Z3
A 11
B 10
C 9GND8
INH6
VCC 16
VEE7
XCOM 14
YCOM 15
ZCOM4
AIL4
AIR5 CL 47
DA 46
DI1
D62
DI1
O63
DI1S
1
DI2
C60
DI2
D57
DI2
W59
DO1C
51
DO1D 50
DO1W 49
DO2C6
FO
C56
FO
D55
FO
W54
LOCK 48
VDDA13
VD
DD
652
VSSA12
VS
SD
10
53
VS
SD
11
58
VS
SD
12
61
VS
SD
1364
MODEL NO SE-U55/UE-155P901
L752
BLM
21A
102F
L751
BLM
21A
102F
L502
BLM21B221SB
L501
BLM21B221SB
L503
BLM21B221SB
L901
BLM21P221SG
L753
BLM21A102F
L754
NC
H-1
470
L401
47UH
NCH-1479
F901
ICP-S2.3
D903
SFPJ63
D2051SS352
D204
1S
S352
D203
1SS352
D202
1S
S352
D200
1SS352
D201
1SS352
D403
D901
SFPJ63
D902 SFPJ63
D401
1SS352
D402
Q905
RN1402
R511
0
R512
0
R513
0
R514
0
R515
0
R516
0
R517
0
R518
0
R519
0
R502
0
R504
0
R503
0
R407
75
R501
1K
R408
75
R714
0
R907
0
R914
0.22
(1W)
R207
1K
R206
1K
R205
1K
R204
1K
R2022.2K R203
2.2K
R201
4.7K
R200
10K
R905
10K
R902
1K
R901
10K
R913
330
R911
330
R753
0
R904
10K
R903
22K
R751
1M
R912
0
R404
2.2
K
R403
2.2
K
R402
2.2
K
Q904
M51957B
CAP 5GND4
IN2
NC11
NC23
NC3 8
OUT 6
VCC 7
C546
101J
C763
C764
180J
C543
105M
C512
473Z
C511
223Z
C510
102J
C509
331J
C752
104Z
C751
104Z
C540
101J
C539
101J
C538
101J
C534
101J
C535
101J
C536
101J
C537
101J
C530
101J
C502
102J
C503
101JC
505
101J
C506
102J
C507
101J
C508
102J
C501
101J
C504
102J
C413
472K
C417
104Z
C913
104Z
C414
104Z
C202
102J
C201
102J
C768
472K
C767
103K
C766
333K
C753
050C
C904
104Z
C756
104Z
C754
050C
C755
103K
C415
104Z
C765
104Z
C905
1/5
0
C410
0.1
/50
C9100.47/50
C901
10/1
6
C206
100/1
6
C205
10/5
0
C20410/50
C203
10/50
C401
47/16
C903
470/6
.3
D904
SLR
-332M
C
U401
TORX178A
U402
TOTX178
Q751
UDA1325
BC
K61
CLK
27
D+8
D-6
DA
57
GP0/BCKI17
GP1/DI13
GP
2/D
O63
GP3/WSO
1
GP4/BCKO2
GP5/WSI15
P0.0
56
P0.1
58
P0.2
60
P0.3
62
P0.4 64
P0.53
P0.65
P0.77
P2.014
P2.116
P2.218
P2.3
20
P2.4
22
P2.5
23
P2.6
29
P2.7
30
SCL19
SD
A21
SHTCB4
VDDE12
VDDI9
VD
DX
28
V
VR
VR
VS
SA
355
VSSE11
VSSI10
VS
SX
24
WS
59
XT
AL1A
54
XT
AL1B
25
XT
AL2A
53
XT
AL2B
26
PS
EN
31
X751
48M
D406
D405
UD
Z3.3
B
D404
C412
22/1
6
L402
NSRF-2046
Q754
TC7WU04
1 7
4
8
Q754
TC7WU04
6 2
Q754
TC7WU04
3 5
R411 680
R410 680
R409 680
R414
1.5
K
R413
1.5
K
R412
1.5
K
01
7
+3.3D
+3.3A
+5A
RE
SE
T
DI
DO
BCKI
WSI+5D
BCKO
128FS
DIT
_C
3
DIT
_C
2
DIT
_C
15
UP_LED
SR
C_D
A
SR
C_LD
SR
C_R
ST
CLK RESET
WAV/DIR
BCKO
WSO
DO
R714 100
UDDUJJ
BK1608LL241-T
C534-540
R511-519ohm
544-546101J
NO USE
101JC530
UJJ UDD
UJJ UDD
(UDD= )
C905
C543
UJJ UDD
ohm
C502,504,506,508
R502-504
C512
C511
C510
C509
L501-503
C501,503,505,507
0
UJJ UDD
NC
OUTPUT
OPTICAL
INPUT
OPTICAL
1.5A
7.5V
DC IN
COAXIAL
INPUT
OUTPUT
GND
SE-U55
SCHEMATIC DIAGRAM (INPUT SELECTOR : LINE/MIC)
L807
4BLH-CUM05R5CN1
Q401
TDA1373H
AIL4
AIR5
AOL19
AOR115
BS 34
CEN 35
CL 47
CLD18
CLI
23
CLO
127
CLO
228
CLO
330
CLO
431
CUS 36
DA 46
DI1
D62
DI1
O63
DI1S
1
DI2
C60
DI2
D57
DI2
W59
DO1C
51
DO1D 50
DO1W 49
DO2C6
DO2D10
DO2W16
EM 37
FO
C56
FO
D55
FO
W54
FS
L25
LD 45
LOCK 48
MU 44
SA 43
TST1 42
TST2 41
VDDA13
VDDA4
19
VDDD17
VDDD211
VDDD314
VD
DD
4
32
VDDD5 39
VD
DD
652
VSSA12
VS
SA
4
20
VSSD18
VS
SD
10
53
VS
SD
11
58
VS
SD
12
61
VS
SD
1364
VSSD212
VSSD313
VSSD417V
SS
D5
24
VS
SD
626
VS
SD
729
VSSD8
33
VSSD9 40
XT
LI
21
XT
LO
22
RST 38
L801BLM21P221SG
L802
L754
NC
H-1
470
F801
ICP-S1.0
D710
1S
S352
R837 0
R819 1.5K
R838 0
R802 15
R801 15
R908
0.33 (1W)
R846 0
R847 0
R415
560
R405
1M
R753
0
R751
1MR404
2.2
R403
2.2
R402
2. 2
C911
104Z
C534
101J
C535
101J
C536
101J
C537
101J
C912
104Z
C768
472K
C419
103K
C418 223K
C409104Z
C405
080D
C406
080D
C403
104Z
C767
10
C76
C753
050C
C754
050C
C755
103K
C402
104Z
C404
104Z
C420
220/6
.3
C401
47/16
X401
33.8688MHZ
X751
48M
P801
+V 1
D+ 3
D- 2
GND 4 D802
UDZ5.6B
D801
UDZ5.6B
4Q754
TC7WU04
6 2
Q754
TC7WU04
3 5
R401
4.7
+3.3D
+5D
D1+
I2C
_S
CL
I2C
_S
DA
D1-
CD
CD
+
+5D
+3.3D
4BLH-CUN05R5BN1
UJJ UDD
0ohmR846,847
L807
NCAR-7035
USB UP
INPUT SELECTOR : LINE/MIC
BY MARK ARE CRITICAL FOR SAFETYIDENTIFIED
NOTE
THE COMPONENTS
REPLACE ONLY WITH PART NUMBER SPECIFIED.
.
. VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE. (NO INPUT SIGNAL)
. ALL PNP TRANSISTORS ARE EQUIVALENT TO 2SA1015-GR UNLESS OTHERWISE NOTED.
. ALL NPN TRANSISTORS ARE EQUIVALENT TO 2SC1815-GR UNLESS OTHERWISE NOTED.
. ALL DIODES ARE EQUIVALENT TO 1SS133 UNLESS OTHERWISE NOTED.
. ELECTROLYTIC CAPACITORS ( ) ARE IN F/WV.
. ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED.EX) 030 3pF 330 33pF 331 330pF
u
ALL RESISTORS ARE IN OHMS 1/4WATTS UNLESS OTHERWISE NOTED.
. THE THICK LINES ON PC BOARD ARE THE PRINTING SIDE OF THE PARTS.EX) PRINTING SIDE
CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT..
.333 0.033uF
SE-U55
SCHEMATIC DIAGRAM (INPUT SELECTOR : LINE/MIC)
DAC
ADC
4BLH-CUM05R5CN1
L504
4BLH-CUN05R5BN1
P303
P302
P301
E902
E901
C307
221K
C305
331K
C374
101J
C324
101J
C366
152J
C316
152J
C368
152J
C318
152J
Q752
74H
C4053 0X 12
0Y2
0Z5
1X 13
1Y1
1Z3
A 11
B 10
C 9GND8
INH6
VCC 16
VEE7
XCOM 14
YCOM 15
ZCOM4
SCHEMATIC DIAGRAMUE-155
L516
BLM21P221SG
L506
BLM21P221SG
BLM21P221SG
L355
BLM21P221SG
L356
BLM21P221SG
L351
BLM21P221SG
L352
BLM21P221SG
L353
BLM21P221SG
L302
BLM21P221SG
L301
BLM21P221SG
L753
BLM21A102F
L754
NC
H-1
470
13
D2051SS352
D204
1S
S352
D203
1SS352
D202
1S
S352
D751
1S
S352
R523 0
R522 0
R521 0
R311
0
R356
0
R355
0
R520
0
R510
0
R372
470
0
R505
0
R303
0
R324
330K
R374
330K
R317
0
R312
0
R322
470
R373
470
R323
470
R309
0
R506
0
R301
330K
R307
4.7
K
R305
680
R304
100K
R302
1K
R308
33K
R392
1K
R306
1K
R327 8.2KR377
R387
6.8K
R337
6.8K
R347
100K
R714
R397
100K
R338
10K
R351
33
R352
33
R388
10K
R314
0
R389 22K
R364
0
R339 22K
R365
33K
R315
33K
R336
22K
R385
82K
R335
82K
R386
22K
R393
33
R343
33
R310
100K
R361
100K
R362
100K
R325
4.7
K
R375
4.7
K
R332
100K
R382
100K
R32010K
R370
10K
R318
2.2K
R319
2.2K
R368
2.2K
R369
2.2K
R321
4.7K
R371
4.7K
R334
33
R394
33
R316
100K
R753
0
R366
100K
(NO
US
E)
R752
10K
C548
101J
C547
102J
C525
102J
C526
101J
C523
102J
C556
101J
C555
102J
C527
102J
C528
101J
C524
101J
C544
101J
C545
101J
C546
101J
C763
180J
C762
104Z
C764
180J
102J
101J
C538
101J
C515
102J
C516
101J
C514
101J
C513
102J
C519
C517
C518
C551
102J
C552
101J
C554
101J
C553
102J
C756
104Z
C755
103K
C303
47/1
6
C302
100/6
.3
C315
47/16
C365
47/16
C352
220/16
C358
220/6
.3
C308
220/6
.3
C363
47/16
C313
47/16
C304 47/16
C311
10/1
6
C757
10/16
C761
220/6
.3
C351
220/1
6
C361
47/16
C362
47/16 C369
47/16
C319
47/16
C206
100/1
6
C205
10/5
0
C331
47/16
C332
47/16
C760 10/16
C758
10/16
C759
10/16
Q751
UDA1325
ALE 50
CLK
27
DA
57
NC1 45
NC2 46
P0.0
56
P0.1
58
P0.2
60
P2.6
29
P2.7
30
RTCB 36
TC 35
VDDA1 38
VDDA2 42
VD
DA
352
VD
DO
32
VD
DX
28
VINL 43
VINR 47
VOUTL 34
VOUTR 37
VREF[AD] 41
VREF[DA] 40
VRN 49
VRP51
VSSA1 39
VSSA2 44
VS
SA
355
VSSO 33
VS
SX
24
WS
59
XT
AL1A
54
XT
AL1B
25
XT
AL2A
53
XT
AL2B
26
EA 48
PS
EN
31
Q301
NJM4565M-D
(1/2)
38
2
1
Q359
NJM2140R
(1/2)
58
6
7
Q358
NJM
2140R
(1/2
)
38
2
1
Q352
NJM2140R
(1/2)
3 8
2
1
Q301
NJM4565M-D
(2/2)
5
6
4
7
Q359
NJM2140R(2/2)
3
2
4
1
Q358
NJM
2140R
(2/2
)
5 6
4
7
Q352
NJM2140R
(2/2)
5
6
4
7
Q389
RN1444-A
Q388
RN1444-A
Q387
RN1444-A
Q386
RN1444-A
Q353
RN1444-A
Q354
RN1444-A
R313
50K
(A)
(2/2
)
R313
50K
(A)
(1/2
)
D206
UD
Z5.6
B
C301
4.7/35
Q754
TC7WU047
Q754
TC7WU04
6 2
+5A
-5V
+3.3D +3.3A
+5A
-5V
CD
CR
ST
U55UJJ 155UJJ U55UDD
R521
R522
R523
UDDUJJ
ohm309, 506505,R303,
C514,516
C513,515
L301,302
L504
Rch
Lch
520
556
555
548, 554,552,
547, 553,551,
510,356,
C523, 527,525,
355,317,312,R311,
528,526,C524,
L351-353,355,356,506,516
(ECHU)
541
Rch
Lch
507-509 ohm
542
384,383,R381,
529,522,520,C518,
521,519,C517,
L505
L381-383
UDDUJJ
ohm
UDDUJJ
Lch
Lch
Rch
Rch
R(1VrmsFS)
L(1VrmsFS)
MIC IN
LINE OUT
R(2VrmsFS)
LINE IN
L(2VrmsFS)
-5V
GND
GND
SE-U55
SCHEMATIC DIAGRAM (INPUT SELECTOR : LINE/MIC)
L505
Q706
74HCT700734
Q706
74H
CT
7007
11
10
Q706
74H
CT
7007
98
Q706
74H
CT
7007
56
Q706
74H
CT
7007
13
12
7
Q706
74HCT7007
1214
PO
WE
R M
OD
E
OPT/COAX
NC
I2C
_S
DA
_D
I2C
_S
CL_D
MCU_MUTE
UPLED
PR
OT
EC
T
I2C_SCL_A
I2C_SDA_A
DIG/ANA
INH
Outp
ut o
nly
MB89135A
MIC/LINE
MODE
AVR
Avss
EP
RO
M_W
R
WIN
/MA
C
CD
CD
+
ON
K/K
OR
G
P_O
N_R
ST
CDCRST
DRC_DA
DIT_C3
SR
C_R
ST
DIT
_C
15
WA
V/D
IR
DIT_C2
SR
C_LD
CLK
X1A
AVcc
Nch
Open d
rain
Vss
X0A
Vcc
X1
X0
MO
D1
MO
D0
RS
T
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
74H
C4053 0X 12
0Y2
0Z5
1X 13
1Y1
1Z3
A 11
B 10
C 9GND8
INH6
VCC 16
VEE7
XCOM 14
YCOM 15
ZCOM4
P381
L383
L382
L381
L754
NC
H-1
470
D301
SF
PJ6
3D701
1SS352
Q384
RN1402
R381
0
R508
R509
R507
R384
R383
R380
100K
R330
100K
R379
33
R329
33R348
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
C37110/16C
306
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
BR
24C
16F
GND4
S01
S12
S23 SCL 6
SDA 5
VCC 8
WC 7
Q705
BR
24C
16F
GND4
S01
S12
S23 SCL 6
SDA 5
VCC 8
WC 7
Q754
TC7WU04
6 2
R754
6.8
K
R718
10K
R715
10K
R716
10K
R717
10K
R708
10K
R703
10K
R704
0
R743
0R
702
10K
R706
10K
R746
15K
R701 2.7K
R700 10K
R705 10K
R713 10K
R709
390
R710
470
R711
820
R729
10KR707
0
R744 6.8K
R745
3.9K
Q385
RN
2401
Q711
RN2401
CD
CD
CR
ST
MC
U_M
UT
E
MIC
/LIN
E
INH
MO
DE
CD
CD
+
P_O
N_R
ST
OP
T/C
OA
X
WIN
/MA
C
WIN
/MA
C
+5D
I2C
_S
DA
I2C
_S
CL
ON
K/K
OR
G
PR
OT
EC
T
PO
WE
RM
OD
E
EP
RO
M_W
R
EP
RO
M_W
R
I2C
_S
CL_D
I2C
_S
DA
_D
I2C
_S
CL_A
I2C
_S
DA
_A
DIG
/AN
A
I2C_SCL_A
I2C_SDA_A
EPROM_WR
OPT/COAX CDCRST
UP_LED SRC_DA
I2C_SCL_DMCU_MUTE
I2C_SDA_D
DIT_C3
MODE
DIT_C2
I2C_SCL_ADIT_C15
I2C_SCL_DWAV/DIR
INH I2C_SDA_A
I2C_SDA_D
MIC/LINE
DIG/ANA
RE
SE
T
SR
C_LD
SR
C_R
ST
CLK
(NO USE)
(NO
US
E)
NO USE
DIGITAL
507-509 ohm
542
384,383,R381,
529,522,520,C518,
M24C
16
M24C
16
ANALOG
MONITOR
INTERNAL
OPT/COAX SW
INPUT SELCTOR
MIC
LINE
PHONES
WIN/MAC SW
SE-U55
SCHEMATIC DIAGRAM (INPUT SELECTOR : MONITOR)
DAC
C9/C15
P401
Q200
2SA1162-Y
Q201
2SC2712-Y
11 10
9 8
13 12
5 63 4
Q357
74HC04
1 2
7
14
Q902SI-3033LUS
GI O
Q903
SI-3033LUS
GI O
Q901
SI-3050F
G
1
INOVC VOS
E903
C200
102J
Q402
CS
8404A
C/SBF 10
C6/C2 4
C7/C3 1
CBL/SBC15
EM0/C914
EM1/C813
FSYNC 7GND18
M021
M122
M223
MCK 5
SCK 6
SDATA 8
TRNPT/FC124
TXN17
TXP20
U 11
V 9
VD+19
C1/FC0 3
12
PRO 2
RST16
Q753
74H
C4053 0X 12
0Y2
0Z5
1X 13
1Y1
1Z3
A 11
B 10
C 9GND8
INH6
VCC 16
VEE7
XCOM 14
YCOM 15
ZCOM4
AIL4
AIR5 CL 47
DA 46
DI1
D62
DI1
O63
DI1S
1
DI2
C60
DI2
D57
DI2
W59
DO1C
51
DO1D 50
DO1W 49
DO2C6
FO
C56
FO
D55
FO
W54
LOCK 48
VDDA13
VD
DD
652
VSSA12
VS
SD
10
53
VS
SD
11
58
VS
SD
12
61
VS
SD
1364
MODEL NO SE-U55/UE-155P901
L752
BLM
21A
102F
L751
BLM
21A
102F
L502
BLM21B221SB
L501
BLM21B221SB
L503
BLM21B221SB
L901
BLM21P221SG
L753
BLM21A102F
L754
NC
H-1
470
L401
47UH
NCH-1479
F901
ICP-S2.3
D903
SFPJ63
D2051SS352
D204
1S
S352
D203
1SS352
D202
1S
S352
D200
1SS352
D201
1SS352
D403
D901
SFPJ63
D902 SFPJ63
D401
1SS352
D402
Q905
RN1402
R511
0
R512
0
R513
0
R514
0
R515
0
R516
0
R517
0
R518
0
R519
0
R502
0
R504
0
R503
0
R407
75
R501
1K
R408
75
R714
0
R907
0
R914
0.22
(1W)
R207
1K
R206
1K
R205
1K
R204
1K
R2022.2K R203
2.2K
R201
4.7K
R200
10K
R905
10K
R902
1K
R901
10K
R913
330
R911
330
R753
0
R904
10K
R903
22K
R751
1M
R912
0
R404
2.2
K
R403
2.2
K
R402
2.2
K
Q904
M51957B
CAP 5GND4
IN2
NC11
NC23
NC3 8
OUT 6
VCC 7
C546
101J
C763
C764
180J
C543
105M
C512
473Z
C511
223Z
C510
102J
C509
331J
C752
104Z
C751
104Z
C540
101J
C539
101J
C538
101J
C534
101J
C535
101J
C536
101J
C537
101J
C530
101J
C502
102J
C503
101JC
505
101J
C506
102J
C507
101J
C508
102J
C501
101J
C504
102J
C413
472K
C417
104Z
C913
104Z
C414
104Z
C202
102J
C201
102J
C768
472K
C767
103K
C766
333K
C753
050C
C904
104Z
C756
104Z
C754
050C
C755
103K
C415
104Z
C765
104Z
C905
1/5
0
C410
0.1
/50
C9100.47/50
C901
10/1
6
C206
100/1
6
C205
10/5
0
C20410/50
C203
10/50
C401
47/16
C903
470/6
.3
D904
SLR
-332M
C
U401
TORX178A
U402
TOTX178
Q751
UDA1325
BC
K61
CLK
27
D+8
D-6
DA
57
GP0/BCKI17
GP1/DI13
GP
2/D
O63
GP3/WSO
1
GP4/BCKO2
GP5/WSI15
P0.0
56
P0.1
58
P0.2
60
P0.3
62
P0.4 64
P0.53
P0.65
P0.77
P2.014
P2.116
P2.218
P2.3
20
P2.4
22
P2.5
23
P2.6
29
P2.7
30
SCL19
SD
A21
SHTCB4
VDDE12
VDDI9
VD
DX
28
V
VR
VR
VS
SA
355
VSSE11
VSSI10
VS
SX
24
WS
59
XT
AL1A
54
XT
AL1B
25
XT
AL2A
53
XT
AL2B
26
PS
EN
31
X751
48M
D406
D405
UD
Z3.3
B
D404
C412
22/1
6
L402
NSRF-2046
Q754
TC7WU04
1 7
4
8
Q754
TC7WU04
6 2
Q754
TC7WU04
3 5
R411 680
R410 680
R409 680
R414
1.5
K
R413
1.5
K
R412
1.5
K
01
7
+3.3D
+3.3A
+5A
RE
SE
T
DI
DO
BCKI
WSI+5D
BCKO
128FS
DIT
_C
3
DIT
_C
2
DIT
_C
15
UP_LED
SR
C_D
A
SR
C_LD
SR
C_R
ST
CLK RESET
WAV/DIR
BCKO
WSO
DO
R714 100
UDDUJJ
BK1608LL241-T
C534-540
R511-519ohm
544-546101J
NO USE
101JC530
UJJ UDD
UJJ UDD
(UDD= )
C905
C543
UJJ UDD
ohm
C502,504,506,508
R502-504
C512
C511
C510
C509
L501-503
C501,503,505,507
0
UJJ UDD
NC
OUTPUT
OPTICAL
INPUT
OPTICAL
1.5A
7.5V
DC IN
COAXIAL
INPUT
OUTPUT
GND
SE-U55
SCHEMATIC DIAGRAM (INPUT SELECTOR : MONITOR)
L807
4BLH-CUM05R5CN1
Q401
TDA1373H
AIL4
AIR5
AOL19
AOR115
BS 34
CEN 35
CL 47
CLD18
CLI
23
CLO
127
CLO
228
CLO
330
CLO
431
CUS 36
DA 46
DI1
D62
DI1
O63
DI1S
1
DI2
C60
DI2
D57
DI2
W59
DO1C
51
DO1D 50
DO1W 49
DO2C6
DO2D10
DO2W16
EM 37
FO
C56
FO
D55
FO
W54
FS
L25
LD 45
LOCK 48
MU 44
SA 43
TST1 42
TST2 41
VDDA13
VDDA4
19
VDDD17
VDDD211
VDDD314
VD
DD
4
32
VDDD5 39
VD
DD
652
VSSA12
VS
SA
4
20
VSSD18
VS
SD
10
53
VS
SD
11
58
VS
SD
12
61
VS
SD
1364
VSSD212
VSSD313
VSSD417V
SS
D5
24
VS
SD
626
VS
SD
729
VSSD8
33
VSSD9 40
XT
LI
21
XT
LO
22
RST 38
L801BLM21P221SG
L802
L754
NC
H-1
470
F801
ICP-S1.0
D710
1S
S352
R837 0
R819 1.5K
R838 0
R802 15
R801 15
R908
0.33 (1W)
R846 0
R847 0
R415
560
R405
1M
R753
0
R751
1MR404
2.2
R403
2.2
R402
2. 2
C911
104Z
C534
101J
C535
101J
C536
101J
C537
101J
C912
104Z
C768
472K
C419
103K
C418 223K
C409104Z
C405
080D
C406
080D
C403
104Z
C767
10
C76
C753
050C
C754
050C
C755
103K
C402
104Z
C404
104Z
C420
220/6
.3
C401
47/16
X401
33.8688MHZ
X751
48M
P801
+V 1
D+ 3
D- 2
GND 4 D802
UDZ5.6B
D801
UDZ5.6B
4Q754
TC7WU04
6 2
Q754
TC7WU04
3 5
R401
4.7
+3.3D
+5D
D1+
I2C
_S
CL
I2C
_S
DA
D1-
CD
CD
+
+5D
+3.3D
4BLH-CUN05R5BN1
UJJ UDD
0ohmR846,847
L807
NCAR-7035
USB UP
INPUT SELECTOR : MONITOR
BY MARK ARE CRITICAL FOR SAFETYIDENTIFIED
NOTE
THE COMPONENTS
REPLACE ONLY WITH PART NUMBER SPECIFIED.
.
. VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE. (NO INPUT SIGNAL)
. ALL PNP TRANSISTORS ARE EQUIVALENT TO 2SA1015-GR UNLESS OTHERWISE NOTED.
. ALL NPN TRANSISTORS ARE EQUIVALENT TO 2SC1815-GR UNLESS OTHERWISE NOTED.
. ALL DIODES ARE EQUIVALENT TO 1SS133 UNLESS OTHERWISE NOTED.
. ELECTROLYTIC CAPACITORS ( ) ARE IN F/WV.
. ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED.EX) 030 3pF 330 33pF 331 330pF
u
ALL RESISTORS ARE IN OHMS 1/4WATTS UNLESS OTHERWISE NOTED.
. THE THICK LINES ON PC BOARD ARE THE PRINTING SIDE OF THE PARTS.EX) PRINTING SIDE
CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT..
.333 0.033uF
SE-U55
SCHEMATIC DIAGRAM (INPUT SELECTOR : MONITOR)
DAC
4BLH-CUM05R5CN1
L504
4BLH-CUN05R5BN1
P303
P302
P301
E902
E901
C307
221K
C305
331K
C374
101J
C324
101J
C366
152J
C316
152J
C368
152J
C318
152J
Q752
74H
C4053 0X 12
0Y2
0Z5
1X 13
1Y1
1Z3
A 11
B 10
C 9GND8
INH6
VCC 16
VEE7
XCOM 14
YCOM 15
ZCOM4
SCHEMATIC DIAGRAMUE-155
L516
BLM21P221SG
L506
BLM21P221SG
BLM21P221SG
L355
BLM21P221SG
L356
BLM21P221SG
L351
BLM21P221SG
L352
BLM21P221SG
L353
BLM21P221SG
L302
BLM21P221SG
L301
BLM21P221SG
L753
BLM21A102F
L754
NC
H-1
470
13
D2051SS352
D204
1S
S352
D203
1SS352
D202
1S
S352
D751
1S
S352
R523 0
R522 0
R521 0
R311
0
R356
0
R355
0
R520
0
R510
0
R372
470
0
R505
0
R303
0
R324
330K
R374
330K
R317
0
R312
0
R322
470
R373
470
R323
470
R309
0
R506
0
R301
330K
R307
4.7
K
R305
680
R304
100K
R302
1K
R308
33K
R392
1K
R306
1K
R327 8.2KR377
R387
6.8K
R337
6.8K
R347
100K
R714
R397
100K
R338
10K
R351
33
R352
33
R388
10K
R314
0
R389 22K
R364
0
R339 22K
R365
33K
R315
33K
R336
22K
R385
82K
R335
82K
R386
22K
R393
33
R343
33
R310
100K
R361
100K
R362
100K
R325
4.7
K
R375
4.7
K
R332
100K
R382
100K
R32010K
R370
10K
R318
2.2K
R319
2.2K
R368
2.2K
R369
2.2K
R321
4.7K
R371
4.7K
R334
33
R394
33
R316
100K
R753
0
R366
100K
(NO
US
E)
R752
10K
C548
101J
C547
102J
C525
102J
C526
101J
C523
102J
C556
101J
C555
102J
C527
102J
C528
101J
C524
101J
C544
101J
C545
101J
C546
101J
C763
180J
C762
104Z
C764
180J
102J
101J
C538
101J
C515
102J
C516
101J
C514
101J
C513
102J
C519
C517
C518
C551
102J
C552
101J
C554
101J
C553
102J
C756
104Z
C755
103K
C303
47/1
6
C302
100/6
.3
C315
47/16
C365
47/16
C352
220/16
C358
220/6
.3
C308
220/6
.3
C363
47/16
C313
47/16
C304 47/16
C311
10/1
6
C757
10/16
C761
220/6
.3
C351
220/1
6
C361
47/16
C362
47/16 C369
47/16
C319
47/16
C206
100/1
6
C205
10/5
0
C331
47/16
C332
47/16
C760 10/16
C758
10/16
C759
10/16
Q751
UDA1325
ALE 50
CLK
27
DA
57
NC1 45
NC2 46
P0.0
56
P0.1
58
P0.2
60
P2.6
29
P2.7
30
RTCB 36
TC 35
VDDA1 38
VDDA2 42
VD
DA
352
VD
DO
32
VD
DX
28
VINL 43
VINR 47
VOUTL 34
VOUTR 37
VREF[AD] 41
VREF[DA] 40
VRN 49
VRP51
VSSA1 39
VSSA2 44
VS
SA
355
VSSO 33
VS
SX
24
WS
59
XT
AL1A
54
XT
AL1B
25
XT
AL2A
53
XT
AL2B
26
EA 48
PS
EN
31
Q301
NJM4565M-D
(1/2)
38
2
1
Q359
NJM2140R
(1/2)
58
6
7
Q358
NJM
2140R
(1/2
)
38
2
1
Q352
NJM2140R
(1/2)
3 8
2
1
Q301
NJM4565M-D
(2/2)
5
6
4
7
Q359
NJM2140R(2/2)
3
2
4
1
Q358
NJM
2140R
(2/2
)
5 6
4
7
Q352
NJM2140R
(2/2)
5
6
4
7
Q389
RN1444-A
Q388
RN1444-A
Q387
RN1444-A
Q386
RN1444-A
Q353
RN1444-A
Q354
RN1444-A
R313
50K
(A)
(2/2
)
R313
50K
(A)
(1/2
)
D206
UD
Z5.6
B
C301
4.7/35
Q754
TC7WU047
Q754
TC7WU04
6 2
+5A
-5V
+3.3D +3.3A
+5A
-5V
CD
CR
ST
U55UJJ 155UJJ U55UDD
R521
R522
R523
UDDUJJ
ohm309, 506505,R303,
C514,516
C513,515
L301,302
L504
Rch
Lch
520
556
555
548, 554,552,
547, 553,551,
510,356,
C523, 527,525,
355,317,312,R311,
528,526,C524,
L351-353,355,356,506,516
(ECHU)
541
Rch
Lch
507-509 ohm
542
384,383,R381,
529,522,520,C518,
521,519,C517,
L505
L381-383
UDDUJJ
ohm
UDDUJJ
Lch
Lch
Rch
Rch
R(1VrmsFS)
L(1VrmsFS)
MIC IN
LINE OUT
R(2VrmsFS)
LINE IN
L(2VrmsFS)
-5V
GND
GND
SE-U55
SCHEMATIC DIAGRAM (INPUT SELECTOR : MONITOR)
L505
Q706
74HCT700734
Q706
74H
CT
7007
11
10
Q706
74H
CT
7007
98
Q706
74H
CT
7007
56
Q706
74H
CT
7007
13
12
7
Q706
74HCT7007
1214
PO
WE
R M
OD
E
OPT/COAX
NC
I2C
_S
DA
_D
I2C
_S
CL_D
MCU_MUTE
UPLED
PR
OT
EC
T
I2C_SCL_A
I2C_SDA_A
DIG/ANA
INH
Outp
ut o
nly
MB89135A
MIC/LINE
MODE
AVR
Avss
EP
RO
M_W
R
WIN
/MA
C
CD
CD
+
ON
K/K
OR
G
P_O
N_R
ST
CDCRST
DRC_DA
DIT_C3
SR
C_R
ST
DIT
_C
15
WA
V/D
IR
DIT_C2
SR
C_LD
CLK
X1A
AVcc
Nch
Open d
rain
Vss
X0A
Vcc
X1
X0
MO
D1
MO
D0
RS
T
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
74H
C4053 0X 12
0Y2
0Z5
1X 13
1Y1
1Z3
A 11
B 10
C 9GND8
INH6
VCC 16
VEE7
XCOM 14
YCOM 15
ZCOM4
P381
L383
L382
L381
L754
NC
H-1
470
D301
SF
PJ6
3D701
1SS352
Q384
RN1402
R381
0
R508
R509
R507
R384
R383
R380
100K
R330
100K
R379
33
R329
33R348
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
C37110/16C
306
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
BR
24C
16F
GND4
S01
S12
S23 SCL 6
SDA 5
VCC 8
WC 7
Q705
BR
24C
16F
GND4
S01
S12
S23 SCL 6
SDA 5
VCC 8
WC 7
Q754
TC7WU04
6 2
R754
6.8
K
R718
10K
R715
10K
R716
10K
R717
10K
R708
10K
R703
10K
R704
0
R743
0R
702
10K
R706
10K
R746
15K
R701 2.7K
R700 10K
R705 10K
R713 10K
R709
390
R710
470
R711
820
R729
10KR707
0
R744 6.8K
R745
3.9K
Q385
RN
2401
Q711
RN2401
CD
CD
CR
ST
MC
U_M
UT
E
MIC
/LIN
E
INH
MO
DE
CD
CD
+
P_O
N_R
ST
OP
T/C
OA
X
WIN
/MA
C
WIN
/MA
C
+5D
I2C
_S
DA
I2C
_S
CL
ON
K/K
OR
G
PR
OT
EC
T
PO
WE
RM
OD
E
EP
RO
M_W
R
EP
RO
M_W
R
I2C
_S
CL_D
I2C
_S
DA
_D
I2C
_S
CL_A
I2C
_S
DA
_A
DIG
/AN
A
I2C_SCL_A
I2C_SDA_A
EPROM_WR
OPT/COAX CDCRST
UP_LED SRC_DA
I2C_SCL_DMCU_MUTE
I2C_SDA_D
DIT_C3
MODE
DIT_C2
I2C_SCL_ADIT_C15
I2C_SCL_DWAV/DIR
INH I2C_SDA_A
I2C_SDA_D
MIC/LINE
DIG/ANA
RE
SE
T
SR
C_LD
SR
C_R
ST
CLK
(NO USE)
(NO
US
E)
NO USE
DIGITAL
507-509 ohm
542
384,383,R381,
529,522,520,C518,
M24C
16
M24C
16
ANALOG
MONITOR
INTERNAL
OPT/COAX SW
INPUT SELCTOR
MIC
LINE
PHONES
WIN/MAC SW
SE-U55
PC BOARD VIEW PARTS LISTCIRCUIT NO. DESCRIPTION PART NUMBERD200~D205 1SS352, C-DIODE or 223234R2 or 1SS355, C-DIODE 223269R2D206 UDZ5.6B, ZENER D 224490560R2D301 SFPJ-63, DIODE 223271R2D401~D403 1SS352, C-DIODE or 223234R2 or 1SS355, C-DIODE 223269R2D404~D406 UDZ3.3B, ZENER D or 224490330R2 or RD3.3SB2, ZENER D 224370332R2D701 1SS352, C-DIODE or 223234R2 or 1SS355, C-DIODE 223269R2D702 UDZ3.3B, ZENER D or 224490330R2 or RD3.3SB2, ZENER D 224370332R2D710, D751 1SS352, C-DIODE or 223234R2 or 1SS355, C-DIODE 223269R2D801, D802 UDZ5.6B, ZENER D 224490560R2D901~D903 SFPJ-63, DIODE 223271R2D904 SLR-332MC3F, LED 225332F801 ICP-S1.0, FUSE 252223R2F901 ICP-S2.3, FUSE 252226R2L301, L302 BLM21P221SG, CHOKE COIL 230949R2L351~L353 BLM21P221SG, CHOKE COIL 230949R2L355, L356 BLM21P221SG, CHOKE COIL 230949R2L381~L383 BLM21P221SG, CHOKE COIL 230949R2L401 NCH-1479, CHOKE COIL 231237K470R2L402 NSRF-2046, MPX COIL 232136L501 BLM21B221SB, CHOKE COIL 230947R2L504, L505 NMBL-003, BLN COIL 233532R2L506, L516 BLM21P221SG, CHOKE COIL 230949R2L751~L753 BLM21A102F, CHOKE COIL 230948R2L754 NCH-1470, CHOKE COIL 231237M015R2L801, L802 BLM21P221SG, CHOKE COIL 230949R2L807 NMBL-003, BLN COIL 233532R2P301 YKB21-5181, JACK 25045579P302, P303 NPJ-2PDR446, PIN JACK 25045641P381 YKB21-5182, JACK 25045388P401 NPJ-2PDO445, PIN JACK 25045640P801 NSCT-4P2179, SOCKET 25052282P901 HEC0470-01-630, JACK 25045598Q200 2SA1162-Y, TR 2214374R2Q201 2SC2712-Y, TR 2213144R2Q301 NJM4565M-D, IC 22241383R2Q352 NJM2140R, IC 22241311R2Q353~Q354 RN1444-A, TR 2216031R2Q357 74HC04, IC 222740045R2Q358 NJM2140R, IC 22241311R2Q359 NJM2140R, IC 22241311R2Q381~Q382 RN1444-A, TR 2216031R2Q383 NJM3414AV, IC 22241469R2Q384 RN1402, TR 2214470R2Q385 RN2401, TR 2214520R2Q386~Q389 RN1444-A, TR 2216031R2Q401 TDA1373H, IC 22241428R3Q402 CS8404A, IC 22241429R2Q701 MB89135L-611, IC 22241557AR2Q704 M24C16-WMN6T, IC or 22241431R2 or BR24C16F, IC 22241430R2Q705 M24C16-WMN6T, IC or 22241431R2 or BR24C16F, IC 22241430R2Q706 TC74HCT7007AF, IC 222740077R2TOQ708 TC74HC4053FP, IC 22241228R2
CIRCUIT NO. DESCRIPTION PART NUMBERQ711 RN2401, TR 2214520R2Q751 UDA1325H, IC 22241312R3Q752, Q753 TC74HC4053FP, IC 22241228R2Q754 TC7WU04FU, IC 22240935R2Q901 SI-3050F, IC 22241561Q902, Q903 SI-3033LUS, IC 22278033CR2Q904 M51957BFP, IC 22241239R2Q905 RN1402, TR 2214470R2R313, R326 N09RGL50KA20F, VARI R 5112486R511~R519 BK1608LL241-T, EMIFIL 230959R1R908 RNU1WCJ-0.33, METAL R 453633394R914 RNU1WCJ-0.22, METAL R 453632294S701, S702 NSS-22203, SLIDE SW 25065581S703 NRSF-224-20U, ROT SW 25030419U401 TORX178B, PHT CP 24120037U402 TOTX178A, PHT PARTS 24120031X401 HC-49U/03 33.8688MHz, 3010325 CRYSTALX701 CST4.00MGW, CERA LOCK 3010150X751 HC-49/U03 48.000MHz, 3010328 CRYSTAL
SE-U55
Microprocessor terminal descriptions
No. PinName I/O Function1 3.3V +3.3V2 RESET I Resetinput(RESET:"L")3 GND I GND4 GND I/O GND5 4MHz I External4MHzclockinput6 4MHz I External4MHzclockinput7 3.3V +3.3V8 GND GND9 X1A Open10 CLK O CLKsignaloutputofSRC(TDA1373H)11 SRC_LD O LDsignaloutputofSRC(TDA1371H)12 SRC_RESET O ResetoutputofSRC(TDA1373H)
13 WAV/DIR O CODECoutput(WAVEorMONITOR)selectsignaloutput(WAVE:"H")14 DITC15 O ToDITC15pin15 DITC2 O ToDITC2pin16 (NOUSE) O Open17 DITC3 O ToDIT3pin18 (NOUSE) I GND19 GND GND20 SRC_DA I/O SerialdataofSRC81373H)input/output21 CODECRST I/O ToVREFofUSBCODEC(UDA1325)22 DIG_ANA O EEPROMforUSBCODECselectsignaloutput23 I2CSDAA I/O SDAportforEEPROMwriting.24 I2CSCLA I/O SCLportforEEPROMwriting.
25 I2CSDAD I/OSDAportforEEPROMwritingforDIGITALsetup.Usually,itconsidersasaninputandbecomesSDAinputandoutputatthetimeofwriting.
26 I2CSCLD I/O SCLportforEEPROMwritingforDIGITALsetup.Usually,itconsidersasaninputandbecomesSCLoutputatthetimeof27 (NOUSE) I GND
28 EPROMWR I/OEEPROMwrite-incontrolport.Usually,itisaninputport,andimmediatelyafterreset,whenthisis"L","L"isoutputtedandEEPROMiswrittenin.
29 (NOUSE) I GND30 MAC/WIN I Thesettingswitch(H:WIN,L:MAC)ofWIN/MAC.31 ONK/KORG I Copyrightoutputprotection.(H:normalmode)32 PROTECT I Existenceofcopyrightprotectioninformation.(H:normalmode)33 PON_RST O Power-onreset.
34 CODECD+ I/O D+ofUSBCODEC(UDA1325)iscontrolled.Usually,itis"H"andD+isgroundedthroughadiodeby"L."35 (NOUSE) I GND
36 POWERMODE I AsetupofPOWERMODEofUSB.L:BUSPOWERH:SELFPOWER.37 (NOUSE) I GND38 (NOUSE) I GND39 (NOUSE) I GND
40 OPT/COAX I ThechangeswitchofOPTICALandCOAXICAL.H:COAXICALandL:OPTICAL.41 UPLED O LightEmittingDiodedisplayofUP(thelightisswitchedonby42 MCUMUTE O MCU_MUTE(itisMYUTOoperationat"L").43 GND GND44 3.3V 3.3V
45 MODE I ThechangeswitchofMONITOR/INTERNAL/LINE/MediaInterfaceConnector.46 (NOUSE) O GND47 INH O Prohibitionofananaloginput(itforbidsby"H").
48 MIC/LINE O AninputchangeofMediaInterfaceConnector/LINE.H:MediaInterfaceConnector,L:LINE.
SE-U55
PACKING-1Assembly Method
1 Factory-shipped conditionFUNCTION SELECTOR dial LINEINPUT LEVEL adjustment dial MINPHONES LEVEL adjustment dial MINDIGITAL IN COAX/OPT selector OPT (Rear side)WIN/MAC selector WIN (Bottom side)
2 Serial No. of LABEL(POS) AS is stuck on CASE (R).
3 A set is put into POLY BAG, and a tape is stuck and it fixes.It is staging the printing side of POLY BAG, putting in a set, and bending a portion to CASE (R) side not much.
Parts Number Parts Name29362765 LABEL(POS)AS29100097-1A POLY BAG(350 X 250)29110149 TAPE(SEROHAN)
FUNCTION SELECTOR dial LINE
INPUT LEVEL adjustment dial MIN
PHONES LEVEL adjustment dial MIN DIGITAL IN COAX/OPT selector OPT
WIN/MAC selector WIN (Bottom side)
UP
FUNCTION SELECTOR
INTERNAL LINE MICMONITORDIGITAL
INPUT LEVEL
PHONE LEVEL
MAX
MAX
MIC
PHONES
USB DIGITAL AUDIO PROCESSORSE-U55
WINMAC
IN
OUT
IN
OUT
OPTICAL
COAXIAL
DIGITAL
UP USB
DIGITAL IN
DC IN
7.5V
ANALOG
COAX
OPT
L
R
L
R
LINE OUT
LINE IN
LABEL(POS)AS
TAPE (SEROHAN)
SE-U55
PACKING-2
PIN CORD AS(0.8MT)
Assembly Method
4 It puts in in the order of INS MANUAL J(SE-U55),INS MANUAL J(CarryOnMusic),WRANTY CARD,CD-ROM(SE-U55),CORD AS(NCS-1P150),CORD AS(USB-1M),PIN CORD AS into POLY BAG, and fixes on a tape.*) POLY BAG is turning a character side down.
Parts Number Parts Name29100097-1A POLY BAG(350 X 250)28343006 INS MANUAL J(SE-U55)29343043 INS MANUAL J(CarryOnMusic)292163 CD ROM(SE-U55)29365075B WRNTY CARD2050066 CORD AS(NCS-1P150)2010391 CORD AS(USB-1M)2010385 PIN CORD AS(0.8MT)29110149 TAPE(SEROHAN)
CORD AS(USB-1M)
CORD AS(NCS-1P150)
CD ROM(SE-U55)
INS MANUAL J(CarryOnMusic)INS MANUAL J(SE-U55)
POLY BAG(350 X 250)
WRNTY CARD
TAPE(SEROHAN)
SE-U55
Packing-3Assembly Method
5 Put the unit into assembled PAD (IN).6 Assemble CARTON (IN).7 Put PAD (IN) AS into assembled CARTON (IN).8 Put Catalog AS into assembled CARTON (IN).
Parts Number Parts Name29091959 PAD (IN)29053665A CARTON (IN)
PAD (IN)UNIT
Catalog ASPAD (IN) AS
CARTON (IN)
SE-U55
Packing-4Parts Number Parts Name29362778A LABEl(D)29053666 CARTON(OUT)29095891 SHEET(D)
Top side : PP tape
CARTON (IN)
CARTON (IN)
LABEL (D)
LABEL (POS) AS
SHEET (D)
CARTON (OUT)
SE-U55
http://www.onkyo.co.jp/HOMEPAGE
ONKYO U.S.A. CORPORATION18 Park Way, Upper Saddle River, N.J. 07458, U.S.A.Tel: 201-785-2600 Fax: 201-785-2650 E-mail: [email protected]
Sales & Product Planning Div. : 2-1, Nisshin-cho, Neyagawa-shi, OSAKA 572-8540, JAPANTel: 072-831-8111 Fax: 072-833-5222
ONKYO CORPORATION
PN 0M3692
