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ACTIVE SPEAKER SYSTEM
SC-UC78
S/M Code No. 09-993-326-9R2
U<W>
SERVICE MANUAL
REVISION
This Service Manual is the "Revision Publishing" and replaces "Simple Manual"
SC-UC78 (D<S>,UW)(S/M Code No.09-993-326-9T1).
DATA
R
L
aiwa
aiwa


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2
SPECIFICATIONS
· Design and specifications are subject to change without
notice
.


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3
REF. NO
PART NO.
KANRI
DESCRIPTION
NO.
REF. NO
PART NO.
KANRI
DESCRIPTION
NO.
ELECTRICAL MAIN PARTS LIST
IC
87-A20-754-010
IC,BA4558N-DX
87-001-596-010
IC,NJM4580L
87-001-629-110
IC,LA4630
87-A20-356-080
C-IC,MM1326AJBE
8Z-YP5-607-010
IC,UDA1321T
87-A21-195-080
IC,RE5RE33AA
TRANSISTOR
89-213-702-010
TR,2SB1370 (1.8W)
89-110-155-080
TR,2SA1015(0.4W)
89-318-155-080
TR,2SC1815 (0.4W)
89-420-612-010
TR,2SD2061 (2W)
DIODE
87-020-465-080
DIODE,1SS133 (110MA)
87-A40-458-080
ZENER,MTZJ18B
87-017-933-080
ZENER,MTZJ10D
86-SP2-646-010
151-540235,DIODE IN5402LT
MAIN C.B
C1
87-018-131-080
CAP, CER 1000P-50V
C2
87-018-131-080
CAP, CER 1000P-50V
C3
87-018-127-080
CAP, CER 470P-50V
C4
87-018-127-080
CAP, CER 470P-50V
C5
87-010-495-040
CAP,E 2.2-50 GAS
C6
87-010-495-040
CAP,E 2.2-50 GAS
C7
87-018-209-080
CAP, CER 0.1-50V
C8
87-010-405-080
CAP, ELECT 10-50V
C25
87-010-404-080
CAP, ELECT 4.7-50V
C26
87-010-404-080
CAP, ELECT 4.7-50V
C27
87-010-248-080
CAP, ELECT 220-10V
C28
87-010-248-080
CAP, ELECT 220-10V
C31
87-010-491-040
CAP,E 0.22-50 GAS
C32
87-010-491-040
CAP,E 0.22-50 GAS
C33
87-010-406-080
CAP, ELECT 22-50
C34
87-010-406-080
CAP, ELECT 22-50
C35
87-010-236-080
CAP,E 1000-10 SME
C36
87-010-235-080
CAP,E 470-16 SME
C45
87-010-384-080
CAP, ELECT 100-25V
C46
87-018-209-080
CAP, CER 0.1-50V
C47
87-A10-797-040
CAP,E 47-35 M 5L SRM
C48
87-010-394-080
CAP ELECT220-35V
C50
87-018-209-080
CAP, CER 0.1-50V
C51
87-010-396-080
CAP,E 470-35 SME
C52
87-010-393-080
CAP, ELECT 100-35V
C53
87-A10-641-090
CAP,E 4700-35 UTES
C54
87-018-209-080
CAP, CER 0.1-50V
C55
87-018-209-080
CAP, CER 0.1-50V
C56
87-018-209-080
CAP, CER 0.1-50V
C57
87-018-209-080
CAP, CER 0.1-50V
C58
87-018-202-080
CAP.CERAM.6800PF
C59
87-018-202-080
CAP.CERAM.6800PF
C60
87-010-494-040
CAP,E 1-50 GAS
C61
87-018-209-080
CAP, CER 0.1-50V
C62
87-010-405-080
CAP, ELECT 10-50V
C63
87-010-263-080
CAP, ELECT 100-10V
C64
87-018-131-080
CAP, CER 1000P-50V
C65
87-010-236-010
ELECTROLYTIC, 1000-10
C77
87-010-405-080
CAP, ELECT 10-50V
C78
87-010-405-080
CAP, ELECT 10-50V
CN1
87-099-543-010
CONN,10P TKC-M10P-B1
CN3
87-099-043-010
CONN 2P EH
CN7
87-099-043-010
CONN 2P EH
J2
87-YP5-607-010
JACK 3.5 ST W/SW HP
J3
87-YP5-619-010
JACK DIN 5P
!PR2
87-A90-069-080
FUSE,2A 125V 251
!PR3
87-A90-069-080
FUSE,2A 125V 251
R67
87-029-167-060
RES,FUSE 10-1/4W J
FRONT C.B
C9
87-010-405-080
CAP, ELECT 10-50V
C10
87-010-405-080
CAP, ELECT 10-50V
C15
87-010-406-080
CAP, ELECT 22-50
C16
87-010-406-080
CAP, ELECT 22-50
C17
87-010-260-080
CAP, ELECT 47-25V
C18
87-018-209-080
CAP, CER 0.1-50V
C19
87-010-405-080
CAP, ELECT 10-50V
C20
87-010-405-080
CAP, ELECT 10-50V
C21
87-018-209-080
CAP, CER 0.1-50V
C24
87-010-260-080
CAP, ELECT 47-25V
C66
87-010-405-080
CAP, ELECT 10-50V
C67
87-010-405-080
CAP, ELECT 10-50V
C76
87-010-405-080
CAP, ELECT 10-50V
C79
87-018-209-080
CAP, CER 0.1-50V
C79
87-018-209-080
CAP, CER 0.1-50V
C80
87-010-405-080
CAP, ELECT 10-50V
D1
87-YP5-627-010
153-DLTL4231,LED DIA3 GRN
CN2
87-009-797-010
CONN,10P TKC-M X
S2
84-SP3-623-010
SW,PUSH 2-2-2
VR1
87-YP5-622-010
104-10KA-11001,VR RTRY 10KAX2
VR2
87-YP5-623-010
102-20KB-11001,VR RTRY 20KBX1H
USB C.B
C201
87-010-190-080
S CHIP F 0.01
C202
87-010-190-080
S CHIP F 0.01
C203
87-010-314-080
C-CAP,S 22P-50V
C204
87-010-314-080
C-CAP,S 22P-50V
C205
87-010-178-080
CHIP CAP 1000P
C206
87-010-311-080
CAP 12P
C207
87-010-149-080
C-CAP,S 5P-50 CH
C208
87-016-044-040
CAP,E 100-16 GAS
C209
87-010-196-080
CHIP CAPACITOR,0.1-25
C210
87-010-196-080
CHIP CAPACITOR,0.1-25
C211
87-016-044-040
CAP,E 100-16 GAS
C212
87-010-196-080
CHIP CAPACITOR,0.1-25
C213
87-010-196-080
CHIP CAPACITOR,0.1-25
C214
87-010-196-080
CHIP CAPACITOR,0.1-25
C215
87-010-196-080
CHIP CAPACITOR,0.1-25
C216
87-010-196-080
CHIP CAPACITOR,0.1-25
C217
87-010-196-080
CHIP CAPACITOR,0.1-25
C218
87-010-497-040
CAP,E 4.7-35 GAS
C219
87-010-196-080
CHIP CAPACITOR,0.1-25
C220
87-010-497-040
CAP,E 4.7-35 GAS
C221
87-010-497-040
CAP,E 4.7-35 GAS
C222
87-010-178-080
CHIP CAP 1000P
C223
87-010-178-080
CHIP CAP 1000P
C224
87-010-196-080
CHIP CAPACITOR,0.1-25
C225
87-010-196-080
CHIP CAPACITOR,0.1-25
CN201
87-009-311-010
CONN 5P 51048
J201
87-A60-853-010
JACK,USB-B
L201
87-A91-164-010
FLTR,ZJY-M4A
L202
87-003-142-080
COIL,3.3UH LAL02
L203
87-A50-182-080
C-COIL,3216 BLM31A601S
L204
87-A50-182-080
C-COIL,3216 BLM31A601S
L205
87-A50-182-080
C-COIL,3216 BLM31A601S
X201
8Z-YP5-608-010
VIB,48MHZ XTAL
PT2
C.B
!
87-033-213-080
CLAMP, FUSE
CN6
87-099-043-010
CONN 2P EH
!F1
87-035-489-010
FUSE,4A125V D UL
!T1
82-304-743-010
TERMINAL, 1P


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4
REF. NO
PART NO.
KANRI
DESCRIPTION
NO.
TRANSISTOR ILLUSTRATION
!T2
82-304-743-010
TERMINAL, 1P
PT1
C.B
!PT1
87-YP5-608-110
PT,U
·
Regarding connectors, they are not stocked as they are not the initial order items.
The connectors are available after they are supplied from connector manufacturers upon the order is received.
88
A
Resistor Code
Chip Resistor Part Coding
Figure
Value of resistor
Chip resistor
Wattage
Type
Tolerance
1/16W
1/10W
1/8W
1608
2125
3216
5%
5%
5%
CJ
CJ
CJ
Form
LW
t
1.6
0.8
0.45
2
1.25
0.45
3.2
1.6
108
118
128
: A
: A
CHIP RESISTOR PART CODE
0.55
Resistor Code
Dimensions (mm)
Symbol
1/16W
1005
5%
CJ
1.0
0.5
0.35
104
L
t
W
E C B
BCE
2SA1015
2SC1815
2SB1370
2SD2061


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6
5
IC BLOCK DIAGRAM
IC, MM1326AJBE
GP2/DO
GP3/WSO
GP4/BCKO
SHTCB
D-
D+
VDDI
VSSI
VSSE
VDDE
VSSX
XTAL1
XTAL2
VDDX
VREF
VSSA
VDDA
VOUTR
VSSO
VDDO
VOUTL
TC
RTCB
GP0/BCKI
GP5/WSI
SCL
SDA
GP1/DI
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
IC, UDA1321T
Pin No.
Pin Name
I/O
Description
IC DESCRIPTION
General purpose pin 2 or data output for extra DSP chip.
General purpose pin 3 or master word select output for extra DSP chip.
General purpose pin 4 or master bit clock output for extra DSP chip.
Shift clock TCB input. (Active HIGH)
Negative data line of the differential data bus conform to the USB-standard.
Positive data line of the differential data bus conform to the USB-standard.
Digital supply voltage core.
Digital ground core.
Digital ground I/O pins.
Digital supply voltage I/O pins.
Crystal oscillator ground.
Crystal oscillator input 1.
Crystal oscillator output 2.
Crystal oscillator supply voltage.
Reference output voltage.
Analog ground.
Analog supply voltage.
Right channel output voltage.
Operational amplifier ground.
Operational amplifier supply voltage.
Left channel output voltage.
Test control input. (Active HIGH)
Asynchronous reset input for test control box. (Active HIGH)
General purpose pin 0 or master bit clock input.
General purpose pin 5 or word select input.
Serial clock input. (I2C-bus)
Serial data input/output. (I2C-bus)
General purpose pin 1 or data input.
I/O
I/O
I/O
I
I/O
I/O
--
--
--
--
--
I
O
--
O
--
--
O
--
--
O
I
I
I/O
I/O
I/O
I/O
I/O