MIC.MIXER
MA-990
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Type
NY AC230V
Model
MA-990
Power Requirement Remarks
ORDER NO.
TRT1121
CONTENTS
1. EXPLODED VIEWS AND PARTS LIST................ 2
2. SCHEMATIC DIAGRAM ....................................... 4
3. PCB CONNECTION DIAGRAM.......................... 10
4. PCB PARTS LIST ............................................... 16
5. IC INFORMATION ............................................. 18
6. PANEL FACILITIES AND SPECIFICATIONS. 21
PIONEER ELECTRONIC CORPORATION 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan
PIONEER ELECTRONICS SERVICE, INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A.
PIONEER ELECTRONIC (EUROPE) N.V. Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 501 Orchard Road, #10-00 Lane Crawford Place, Singapore 0923
c
PIONEER ELECTRONIC CORPORATION 1997
O - IZC DEC. 1997 Printed in Japan
MA-990
1. EXPLODED VIEWS AND PARTS LIST
NOTES:• Parts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List.
PARTS LIST
•
Mark No. Description Part No.
NSP 3 VOLUME BOARD Assy MWX1078
NSP 4 POWER SWITCH BOARD Assy MWX1076
The mark found on some component parts indicates the importance of the safety factor of the part.
•
Therefore, when replacing, be sure to use parts of identical designation.
Screws adjacent to mark on the product are used for disassembly.
•
PACKING
•
1 MAIN BOARD Assy MWX1079
2 FRONT BOARD Assy MWX1077
5 Cord Stopper MNK1183
6 AC Power Cord PDG1003
7 • • • • •
NSP 8 Chassis MNA3012
9 Power Transformer MTT1016
10 Bonnet MNA3013
11 Rear Panel MNA1114
12 Panel Assy MXA1043
13 Name Plate VAM1032
14 Indicator B RNK1385
15 Lens MNK3080
16 • • • • •
17 Power Button MNK3081
18 Button MNK3082
19 Rotary Knob (A) RAC1861
20 Insulator Assy AMR2140
NSP 21 Angle MNA3016
22 Packing Case MHG1190
NSP 23 Power Holder MNA3017
24 Protector MHA3012
25 Sheet MHL3013
26 Operating Instructions MRB1025
(English/French/Spanish)
27 Connection Cord (AUDIO) MDE1050
28 Cover MNG3008
29 Screw BBZ30P060FZK
30 Screw BBZ40P060FZK
31 • • • • •
32 Display Panel MAH1015
33 Screw ATZ30P080FMC
34 • • • • •
24
25
37
27
40
26
43
24
22
35 Screw BBZ30P100FZK
36 Screw BBZ30P060FMC
37 Pad MHA3013
38 • • • • •
39 Panel MNK1196
40 Poly Bag PO230×340×0.05A
41 Connector MDF1024
42 Connector MDF1019
43 Warranty Card ARY7008
2
EXPLODED VIEW
•
MA-990
41
42
3
1
01
D2
76
S
ss
29
+
23
MA-990
3.SCHEMATIC DIAGRAM
Note : When ordering service parts, be sure to refer to
"EXPLODED VIEWS and PARTS LIST" or "PCB PARTS LIST".
A
JA402
MKN1017
L
LD
R
JA401 (1/2)
MKN1024
L
VCR
R
JA401 (2/2)
MKN1024
L
TAPE
R
JA501
MKN3005
B
JA502
MKN3006
JA503
MKN3005
JA504
MKN3005
C
D
MAIN BOARD ASSY (MWX1079)
A
1
R401
C401
1k
2
3
1
2
3
4
6
5
330P
R402
C402
1k
330P
C403
R403
330P
1k
R404
C404
1k
330P
R405
C405
1k
330P
R406
C406
1k
330P
R501
470
2
4
C503
2200P
1
AG AG
AG
C501
C502
0.01
0.01
FG
6
5
4
J501 0
2
3
7
8
9
1
FG FG
R511
470
2
4
C511
2200P
1
AG AG AG
R517
470
2
4
C517
2200P
1
AGFGAG AG
C550
0.01
AG
AG
AG
C504
4.7/50
+
R502
56k
C505
10/50
VCC
DG1
R507
10k
C509
0.01
C512
4.7/50
++
R512
56k
C513
10/50
AG
IC502 (2/2)
UPC4570HA
C518 4.7/50
R518
56k
C519
10/50
AG
R301
3.3k
312312312331
VR301
10k(B)
MCS3002
MIC1 MIC2 MIC3 ECHO MUSIC
B
+9V
IC401
TC4052BP
1
VDD
Y0
5
Y1
YC
2
Y2
4
Y3
12
X0
14
XC
X1
15
X2
11
X3
6
VEE
INH
VSS
AG
AG
+9V.2
+
AG
DG1
+
+
JA505
MKP1019
MDD1016
CN301
MEP3009
R302
3.3k
6
7
R504
330
R508
10k
R509 47k
R510 47k
C510
0.01
6
7
R514
330
−9V
+9V.2
4
3
R520
330
VR302
10k(B)
MCS3002
+
1
C506
1800P
IC502 (1/2)
UPC4570HA
5
R515
+
1
R521
C520
1800P
MIC1
R303
3.3k
IC501 (1/2)
UPC4570HA
R503
33k
R513
33k
R519
33k
VOLUME BOARD ASSY
(MWX1078)
+
16
3
13
10
A
9
B
7
8
−9V
C507 1000P
C508 33/16
AG
8
R505
4.7k
Q501
2SA1048
Q502
2SA1048
8
4.7k
+
C523 33/16
C524 1000P
AG
C521 33/16
AG
2
4.7k
MIC2
MIC3
MIC3
321456789
321456789
321456789
VR303
10k(B)
MCS3002
C425 33/16
C407 1000P
AG
R409 100
R410 100
+
C426
33/16
C408
1000P
AG
R506
100
KMI3
KMI1
KMO3
R516
100
C514
1800P
C522
1000P
R522
100
MIC1,2
ECHO
ECHORLRAG
2
VR304
10k(B)
MCS3003
101112
101112
101112
6
4
L
5
VR305
50k(B)
MCS1014
AG
2
1
C409 33/16
AG
R407 100k
R408 100k
IS1
IS2
+
2
3
AG
6
5
AG
6
5
IC604 (2/2)
M5218AL
MIC3
MIC1,2
SW
201
SUR
SW
205
LD
SW
209
SW201-206,208-211
: MSG3006
+9V.2
8
4
−9V
SW501
MSG3005
JA701
MKP1022
MDD1019
CN201
MEP3015
SW
202
VOCE
SW
206
TAPE
SW
210
N
R411
100k
IC402 (1/2)
M5218AL
1
R413
100
R412
100k
IC402 (2/2)
M5218AL
7
R414
100
+
C410 33/16
AG
7
ECHO
P0P4SIRQSISICK
2
5
SW
203
VOCP
SW
211
#
+9V
C665 1000P
L611
2.2
C650
+
33/16
R631
AG
C601
33/16
L
R
C602
33/16
R633
1.1k
C651
R622
33/16
1.1k
+
R621
C615
100k
1000P
AG AG AG
VCC
SRDY
SIAK
1
3
4
C528 33P
6
6
5
R527
220
AG AG
KMI1
KMI2
KMI3
KMI4
KMO1
KMO2
KMO3
321456789
321456789
321456789
SW
VCC
204
OTK
SW
208
VCR
C202
1/50
1.1k
R603 1.1k R607 3.9k
+
C603
R601
1000P
100k
AG
AG
C666
+5V
1000P
R604
AG
1.1k
+
C604
R602
1000P
100k
AG
C617 1/50
+
+5V
R684
1M
AG
R624 3.9k
R623
C616
1.1k
4700P
L605
F601
2.2
MTF3002
C640
0.01
DG2 DG2
R670
D0
D1
R671
R672
D2
R673
D3
R528
33k
R529
100
7
IC503 (2/2)
M5218AL
ECHO
LSEL1
LSEL2
LSEL3
LSEL4
10
11
10
11
10
11
C201
0.01
0
123456789101112131415
24
+
123456789
DG1
D209
432
A-a
+5V
C607
R609 1.5k
+
1/50
R685
1M
AG
R605
C605
1.1k
4700P
AG
C608
R610 1.5k
+
1/50
R686
R632
1M
AG
1.1k
R608 3.9k
R606
C606
1.1k
4700P
AG AG
+
R625 1.5k
IC201
TC74HC154AP
D210
C
C618 33/16
R626
91k
2
8
1
3
IC604 (1/2)
4
M5218AL
+
−9V
AG
+5V
C654
C656
0.01
47/16
DG1 DG1 DG1 DG1
C642
33/16
+
C641
0.01
DG2DG2
100
2
I/O1
3
100
I/O2
100
15
I/O3
100
17
I/O4
VSS
DG1
C529
33/16
AG
R530
10k
R531
220
INPUT.SELECT
KEY.MATRIX
LED.SELECT
202122
23
B
A
C
10111314151617
D211
D212
D213
D214
D215
D216
D217
1
N
#1#2#3
FRONT BOARD ASSY (MWX1077)
C611
33/16
+
AG
R611
91k
2
3
6
5
−9V
AG
R627 110k
C620
33/16
F602
MTF3002
IC602
LC32464P-80
9
18
DG2
D
VCC
#4
R613
8
110k
1
IC603 (1/2)
M5218AL
R612
91k
R614
110k
7
IC603 (2/2)
4
M5218AL
+
C612
33/16
AG
R629
91k
C622
1000P
R630
11k
DSPVCC
C653
0.01
DG2
14
R652 100
A0
R653 100
13
A1
R654 100
12
A2
R655 100
11
A3
R656 100
8
A4
R657 100
7
A5
R658 100
6
A6
R659 100
10
A7
R675 100
5
RAS
R676 100
16
CAS
R677 100
1
OE
R678 100
4
WE
+9V.2 +9V.2
+
R532
10k
2
3
C537
33/16
CN202
MEP3010
C530
8
10/50
+
1
IC503 (1/2)
4
+
M5218AL
−9V
AG
VCC
JA702
LED1
MKP3007
MDD1018
VCC
19
18
D202
G2
G1
VSSVDD
12
330
DG1
R202
R208
330
SUR
D201,206,207,218 :SLR-342VC
D202,203,205, :SLR-342MC
D209-212,214-217
D204,213 :SLR-342DC
C613
1500P
C614
1500P
++
C673
33/16
R533
33k
LED2
LED3
321456789
321456789
321456789
D203
D204
330
270
R203
R204
VOLE
VOLP
R617
91k
R619
11k
R618
91k
R620 11k
L610
2.2
AG
L608
2.2
C674
1000P
A0
A1
A2
A3
A4
A5
A6
A7
RAS
CAS
RE
WE
C531
10/50
R534
220
LED4
LED5
LED6
D205
D206
D207
270
330
R205
R206
LD
OTK
4
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
DSP,CONTROL
+
2
3
AG
LED8
DG1
VCC
DG1
POWER
D218
VCC
DG1
VCR
TAPE
C655
47/16
40
39
38
37
36
35
34
33
32
ADL3
ADL1
ADR2
ADRVdd
DSPVCC
DG2
C527
33/16
+
MIC
+
AG
ADLVdd
IC601
LC83025E
L603
2.2
C677
1000P
DG2
ADL2
ADLVss
Vdd4
DG2
DARVdd
Vss4D4D3
ADR1
ADRVss
ADR3
ADM2
ADMVss
ADM1
ADMVdd
ADM3
P0
P1
P2
P3
P4
Vdd3
Vss3
SIRQ
SI
SICK
SRDY
SIAK
A0
A1
A2
A3
A4
A5A6A7A8D7D6D5
6566676869707172737475
C676
33/16
R535 33k
8
1
IC504 (1/2)
M5218AL
R201
330
D201
+
31
DADR
TE
30
DARV
D3
C011
4
A B C
1234
5
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
11
12
13
14
15
16
17
18
19
20
21
+
+
+
+
+
R711
2.7K
R002
1M
R006
10K
R003
22K
R710
100K
R709
2.7K
R004
4.7K
R005
10K
+
+
+
+
+
+
+
+
+
C325
0.01
C324
0.01
C323
0.01
C321
0.01
C322
0.01
+
!
!
!
!
!
!
!
10
987654321
10
987654321
10
987654321
1
2
3
4
5
2
1
1
2
BLU
RED
RED
BLU
BLK
BLU
WHT
C663
4.7/50
C637
4.7/50
C415
10/50
C417
10/50
C418
10/50
C416
10/50
C429
33/16
C427
33/16
C428
33/16
C414
100p
C413
100p
C421
470p
C422
470p
C419
470p
C420
470p
C638
4.7/50
C664
4.7/50
R637
9.1k
R682
9.1k
R641
9.1k
R643
9.1k
R645
100
R646
100
R648
100k
R647
100k
R425
100k
R426
100k
R433
100k
R434
100k
R542
15k
R543
27k
R437
100
R438
100
R435
100
R431
100k
R432
100k
R436
100
R428
2.2k
R427
2.2k
R429
4.7k
R430
4.7k
R415
6.8k
R417
10k
R419
10k
R421
1k
R422
1k
R420
10k
R416
6.8k
R418
10k
R712
47k
R704
47k
R642
9.1k
R644
9.1k
R638
9.1k
R683
9.1k
R640
9.1k
R639
9.1k
R635
100k
R636
100k
5
6
3
2
1
1
4
7
C630
100/16
C629
100/16
C632
100/16
C625
4700p
C626
4700p
C633
4700p
C634
4700p
C623
2200p
C624
2200p
C628
270p
C627
270p
C636
180p
C635
180p
AG
–9V
–
+
–
+
5
6
4
7
–
+
5
678
–
+
–
+
–
+
5
6
7
4
3
2
8
4
–
+
1
3
2
8
IC606(1/2)
M5218AL
IC605(2/2)
M5218AL
IC605(1/2)
M5218AL
IC606(2/2)
M5218AL
+9V
+
C631
100/16
+9V
AG
AG
AG
–9V
-9V
-9V
+9V
AG
AG
AG
AG
AG
AG
AG
AG
AG
AG
AG
AG
AG
IC404(1/2)
M5218AL
IC404(2/2)
M5218AL
R423
15k
15k
R424
Q401
2SD2144S
Q402
2SD2144S
IO OI
CI
IO OI
CI
IO OICIIO OI
CI
43
5
89
6
121311 10
12147
IC405
(1/4)
IC405
(4/4)
IC405
(3/4)
IC405
(2/4)
JA403(1/2)
MKN1024
JA403(2/2)
MKN1024
1
2
3
4
5
6
L
R
LINE
FG
FG
+9V
L
R
TAPE
IC405 :
TC4066BP
VCCVCC
VCC
VCC
J701
J702
R713 47k
R714 47k
R715 47k
R716 47k
C702
0.01
C703
0.01
C701
47/10
MTF3002
F701
DG1
P00 PE1/TRB
PE0/TRA
Vdd
PD3/CMP3
PD2/CMP2
PD1/CMP1
PD0/CMP0
PC3/Vr1
PC2/Vr0
P63/PIN1
P62/SK1
P61/SO1
P60/SI1
P53/INT2
P52
P51
P50
P43
P42
RES
OSC2
P01
P02
P03
P10
P11
P12
P13
SI0/P20
SO0/P21
SK0/P22
INT0/P23
INT1/P30
PO0/P31
PO1/P32
HLD/P33
P40
P41
TEST
Vss
OSC1
RESDSP
LED1
P4
LED2
LED3
LED4
LED5
LED6
LED7
REFH
VrefH
AVdd
LRCK
DATAL
DATAR
BCLK
SYSCLK
DVdd
NC
VrefL
AGND
REFL
DGND
MODE2
MODE1
FSEL
TSTOUT
LED8
LSEL1
LSEL2
LSEL4
LSEL3
IS1
KMO1
KMO2
KMO3
KMI1
KMI4
KMI2
KMI3
IS2
SI
SICK
P0
SIRQ
SRDY
SIAK
IC701 PDC031A
DG1
X701
MSS3013
4MHz
2
13
DG1
CH1OUT CH2OUT
MTF3002
F603
IC608
LC78815M
AG
AG
AG
C660
47/10
C662
47/10
C661
47/10
C669
1000p
C670
1000p
C672
1000p
C671
1000p
L606
2.2
+5V
DG1
DG1 DG1DG1
DG1
DG1
R537 120k
C533 33p
R536
9.1k
R540
8.2k
R541
47k
AG
AG
AG AG AG AG
C532
0.068
1SS254
D501
Interrupt Det .
C535
1/50
C534
33/16
R538
100k
R539
330k
C536
10/50
IC504(2/2)
M5218AL
–9V
+5V
Q504
2SC2458
Q701
2SC2458
Q001
2SA933S
Q002
2SC1740S
Q003
2SA933S
R708 10k
IC702
M51951BSL
31
2
C706
1/50
C013
3.3/50
C014
100/25
C012
10/50
C708
220/10
C707
0.01
DG1
RD4.3ES
D702
D701
1SS254
DG1
VCC
AG AG AG
AG
+9V.2
D012
RD16JS
D015
1SS254
1SS254D011
1SS254D014
1SS254D010
1SS254D009
D013
1SS254
–9V
+9V
FG
BRN
LIVE
NEUTRAL
BLU
AC 230V
50/60Hz
AC POWER CORD
PDG1003
T002
JKE1002
JKE1003
T001
JKE1001
T003
POWER TRANSFORMER
MTT1016
5
2
3
4
1
6
10
11
12
8
9
15
R001 4.7k
FG
FG
MEP1049
CN001
MEP1049
CN321
SW321
MSG1007
MDD1015
17
18
16
3
126
4
5
12
10
11
9
7
8
15
13
14
POWER SWITCH BOARD ASSY
(MWX1076)
+9V.2
L501
2.2
OUT
COM COM
IN
OUT IN
COM
OUT IN
C002
1000/25
C003
1000/25
C001
1000/25
D003
!
D005
D007
!
D004
!
D008
!
D006
D001
D002
C008
0.1
C009
0.1
C007
0.1
0.1
C010
47/10
C005
47/16
C006
47/16
C004
47/16
+5V
NJM78L05A
IC004
13
2
NJM7809FA
IC001
1
1
3
3
2
!
!
COM
OUT IN
NJM7805FA
IC003
13
2
2
AG
AG
+9V
–9V
IC002
NJM7909FA
VCC
FG
DG1
INPUT.SELECT
LED.DRIVE
KEY.MATRIX
LED.SELECT
D001–D008 :
ERA15–02KFRB
+
D3D2D1D0RAS
CAS
D2D1D0
RAS
CAS
1
7677787980
DREAD
2
DWAT
3
ASO
4
BCKO
5
LRCKO
6
FS3840
7
ASI
8
BCKI
9
LRCKI
10
FS3841
11
SELC
12
Vdd1
13
OSC1
14
OSC2
15
Vss1
16
Vss2
17
RES
18
SAIF
19
SAOF
20
TEST6
21
TEST1
22
TEST2
23
TEST3
24
ST4
DARVss
29
DALVdd
28
DADL
27
DALVss
26
Vdd2
25
TEST5
L602
2.2
C675
1000P
X601
MSS1017
R687
100
C643
13P
C644
1000P
C645
30P
C657
22P
C658
22P
C659
22P
L601
1.5
33.8688MHz
+5V
−9V
IC501 (2/2)
UPC4570HA
C515 33/16
C516
1000P
AG
4
3
2
5
MIC
MIC
MIC
Lch
Rch
Rch
Lch
DG2
DG2
DG2
WE
RE
DG2
DG1
R679
100
100
100
R680
R681
RESDSP
: AUDIO SIGNAL ROUTE
POWER SWITCH BOARD ASSY
SW321 : POWER STANDBY/ON
MAIN BOARD ASSY
SW501 : MIC.3 ECOH
FRONT BOARD ASSY
SW201 : SURROUND
SW202 : CHORUS
SW203 : VOC.P.
SW204 : ONE T.K.
SW205 : INPUT SELECTOR1
SW206 : INPUT SELECTOR2
SW208 : INPUT SELECTOR3/TAPE
SW209 : KEY CONTROL
SW210 : KEY CONTROL
SW211 : KEY CONTROL #
DG1DG1DG1 DG1
+9V.2
–9V
D
678
MA-990
A-b
A
Large size
SCH diagram
A-a
B
A-b
5
6
C
Guide page
A-b
A-a
A-a
Detailed page
A D
7
A-b
D
5
8
A
C
4
C
4
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
MAIN BOARD ASSY (MWX1079)
JA402
MKN1017
L
R
R401
C401
330P
C425 33/16
C409 33/16
C410 33/16
C650
33/16
C611
33/16
C607
1/50
C608
1/50
C612
33/16
C601
33/16
C602
33/16
C618 33/16
C620
33/16
C622
1000P
C674
1000P
ADRVdd
ADR3
ADM2
ADMVss
ADM1
ADMVdd
ADM3P0P1P2P3P4Vdd3
Vss3
SIRQSISICK
SRDY
SIAKA0A1A2A3
A4
A5
A6
A7
A8
D7
D6
D5
Vdd4
Vss4
D4
D3
D2
D1
D0
RAS
CAS
D3
D2
D1
D0
RAS
CAS
C653
0.01
C654
0.01
C656
47/16
C640
0.01
C641
0.01
R670
R671
R672
R673
100
R652 100
R653 100
R654 100
R656 100
R655 100
R657 100
R658 100
R659 100
R675 100
R676 100
R677 100
R678 100
A0A1A2A4A3A5A6A7RAS
CASREWE
100
100
100
C642
33/16
IC602
LC32464P-80
IC601
LC83025E
L605
2.2
9
I/O1
14131211876
10
1614
5
I/O2
I/O3
I/O4
VSS
2
A0A1A2A3A4A5A6
A7
RAS
CAS
OE
WE
3
15
17
18
F602
MTF3002
F601
MTF3002
C673
33/16
R629
91k
R626
91k
R630
11k
DSPVCC
4142434445464748495051535254555657585960616263
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
DREAD
DWAT
ASO
BCKO
LRCKO
FS3840
ASI
BCKI
LRCKI
FS3841
SELC
Vdd1
OSC1
OSC2
Vss1
Vss2
RES
SAIF
SAOF
TEST6
TEST1
TEST2
TEST3
40
TEST4
ADR1
39
ADRVss
38
ADR2
37
ADL3
36
ADLVdd
35
ADL1
34
ADLVss
33
ADL2
32
DARVdd
31
DADR
30
DARVss
29
DALVdd
28
DADL
27
DALVss
26
Vdd2
25
TEST5
VCC
C613
1500P
C614
1500P
L610
2.2
L602
2.2
C677
1000P
C676
33/16
L603
2.2
C655
47/16
C617 1/50
C651
33/16
C407 1000P
R409 100
R407 100k
R411
100k
L611
2.2
C665 1000P
C666
1000P
C603
1000P
C604
1000P
C615
1000P
R412
100k
R413
100
R685
1M
R686
1M
R684
1M
R611
91k
R612
91k
R613
110k
R617
91k
R619
11k
R618
91k
R620 11k
R614
110k
R627 110k
R631
1.1k
R632
1.1k
R604
1.1k
R622
1.1k
R633
1.1k
R601
100k
R602
100k
R621
100k
R605
1.1k
R606
1.1k
R623
1.1k
C605
4700P
C606
4700P
C616
4700P
R603 1.1k R607 3.9k
R608 3.9k
R624 3.9k
R625 1.5k
R609 1.5k
R610 1.5k
R414
100
R408 100k
R410 100
C405
330P
C426
33/16
C408
1000P
C402
330P
C403
330P
C404
330P
C406
330P
C501
0.01
R501
470
R511
470
R502
56k
R503
33k
IC501 (1/2)
UPC4570HA
R504
330
R507
10k
R508
10k
Q501
2SA1048
Q502
2SA1048
R509 47k
KMI3
KMI1
KMO3
R510 47k
R506
100
R505
4.7k
C502
0.01
C503
2200P
C504
4.7/50
C507 1000P
C508 33/16
C505
10/50
C506
1800P
C509
0.01
C510
0.01
1k
AG
AG
AG
AG
AG
AG
AG
AG
AG
AG AG AG
AG
AG
DG1 DG1 DG1 DG1
DG2
AG AG
AG
AG
+5V
AG
AG
AG
AG
AG
AG
AG
IS1
IS2
AG
AG
AG
−9V
+9V
+9V.2
+9V
+5V
+5V
+5V
+5V
DG2 DG2
D0D1D2
D3
DG2DG2
AG
AG
FG
FG FG
DG1
DG1
AG AG
AG
VCC
AG
+9V.2
AG
R4021kR4031kR4041kR4051kR406
1k
1
2
3
1
2
3
16
152
4
121415
11
6
3
13109
7
8
4
6
5
2
4
1
654237891
LD
JA401 (1/2)
MKN1024
JA401 (2/2)
MKN1024
JA501
MKN3005
JA502
MKN3006
JA503
MKN3005
JA504
L
R
VCR
L
R
TAPE
6
7
8
R512
56k
R513
33k
IC502 (1/2)
UPC4570HA
R514
330
R516
100
R515
4.7k
C511
2200P
C512
4.7/50
C513
10/50
C514
1800P
C523 33/16
C524 1000P
AG AG AG
AG
AG
−9V
+9V.2
2
4
1
6
7
8
5
1
R517
470
R518
R519
IC502 (2/2)
UPC4570HA
C517
C518 4.7/50
C521 33/16
C522
1000P
AG
2
4
4
2
1
+
+
IC402 (1/2)
M5218AL
IC402 (2/2)
M5218AL
IC603 (1/2)
M5218AL
IC603 (2/2)
M5218AL
IC604 (1/2)
M5218AL
IC604 (2/2)
M5218AL
−9V
2
3
1
L
R
ECHO
8
6
5
7
6
5
7
4
2
3
1
8
2
3
1
8
4
6
5
7
4
−9V
−9V
DG2
DSPVCC
IC401
TC4052BP
VDD
VSS
VEE
B
A
XC
YC
Y0Y1Y2Y3X0X1X2X3INH
J501 0
L608
2.2
A
B
C
MA-990
A-b
A-a
1
23
4
D
6
A-a
1234
5
+
R
9
+9V.2
L5
2
OUT
CO
C011
0.1
C010
47/10
+5V
NJM7
IC0
1
AG
+
+
+
+
+
3
2
1
4
5
6
7
8
9
10
11
12
3
2
1
4
5
6
7
8
9
10
11
3
2
1
4
5
6
7
8
9
3
2
1
4
5
6
7
8
9
10
11
12
3
2
1
4
5
6
7
8
9
10
11
3
2
1
4
5
6
7
8
9
3
2
1
4
5
6
7
8
9
10
11
12
3
2
1
4
5
6
7
8
9
10
11
3
2
1
4
5
6
7
8
9
+
+
+
+
+
+
VOLUME BOARD ASSY
(MWX1078)
FRONT BOARD ASSY (MWX1077)
D3
D2
D1
D0
RAS
CAS
R670
R671
R672
R673
100
R656 100
R657 100
R658 100
R659 100
R675 100
R676 100
R677 100
R678 100
A4A5A6A7RAS
CASREWE
100
100
100
SW501
MSG3005
IC503 (2/2)
M5218AL
IC503 (1/2)
M5218AL
IC504 (1/2)
M5218AL
R527
220
R531
220
R534
220
R529
100
R530
10k
R532
10k
R535 33k
C529
33/16
C527
33/16
C530
10/50
C531
10/50
R533
33k
R528
33k
C528 33P
I/O1
876
10
1614
5
I/O2
I/O3
I/O4
VSS
2
A4A5A6
A7
RAS
CAS
OE
WE
3
15
17
18
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
C677
1000P
C676
33/16
L603
2.2
D0D1D2
D3
DG1
AG AG
VCC
VCC
VCC
VCC
DG1
DG1
DG1
VCC
VCC
DG1
24
12
VSSVDD
1
2
3
4
5
6
7
8
9
10
11
13
14
15
16
17
G2
G1
D
C
B
A
19
0
D209
4
3
2
1
N
#1
#2
#3
#4
D210
D211
D212
D213
D214
D215
D216
D217
D202
D203
D204
D205
D206
330
330
270
270
330
R202
R203
R204
R205
R206
D207
D218
SUR
VOLE
VOLP
OTK
LD
TAPE
VCR
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
18
20
21
22
23
KEY.MATRIX
LED.SELECT
DG1
AG
AG
AG
AG
+9V.2 +9V.2
MIC3
1
324
6
5
MIC1,2
DG2
JA504
MKN3005
R514
330
C513
10/50
1800P
C523 33/16
C524 1000P
AG
AG
−9V
+9V.2
C550
0.01
R517
470
R518
56k
R519
33k
IC502 (2/2)
UPC4570HA
R520
330
R522
100
R521
4.7k
C517
2200P
C518 4.7/50
C521 33/16
C519
10/50
C520
1800P
C522
1000P
R301
3.3k
VR301
10k(B)
MCS3002
MIC1 MIC2 MIC3 ECHO MUSIC
VR302
10k(B)
MCS3002
VR303
10k(B)
MCS3002
VR304
10k(B)
MCS3003
VR305
50k(B)
MCS1014
SW
201
SUR
SW
202
VOCE
SW
203
VOCP
SW
204
OTK
SW
205
LD
SW
206
TAPE
SW
208
VCR
C202
1/50
D201,206,207,218 :SLR-342VC
D202,203,205, :SLR-342MC
D209-212,214-217
D204,213 :SLR-342DC
R208
330
R201
330
D201
C201
0.01
IC201
TC74HC154AP
SW
209
SW
210
N
SW
211
#
R302
3.3k
R303
3.3k
AG
FG
AG AG
AG
AG
MIC1
MIC2
MIC3
MIC3
MIC1,2
ECHO
ECHO
R
L
R
AG
KMI1
KMI2
KMI3
KMI4
KMO1
KMO2
KMO3
LSEL1
LSEL2
LSEL3
LSEL4
LED1
LED2
LED3
LED4
LED5
LED6
LED8
L
JA505
MKP1019
JA701
MKP1022
MDD1019
JA702
MKP3007
MDD1018
CN301
MEP3009
MDD1016
CN201
MEP3015
CN202
MEP3010
AG
2
4
1
4
3
2
1
+
MIC
DG2
DSPVCC
DG2
DSP,CONTROL
DG2
P0
P4
SIRQ
SI
SICK
SRDY
SIAK
6
5
7
2
3
1
8
2
3
1
8
4
−9V
SW201-206,208-211
: MSG3006
ECHO
INPUT.SELECT
C537
33/16
POWER
31
2
31
2
31
2
3
3
1
1
2
2
6
4
5
C
B
678
MA-990
A-b
A
A-a
B
C
A-a
7
B C
8
D
7
5
6
1
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
424140393837363534333231302928272625242322
123456789
10
123456789
10
201918171615141312
11
1112131415161718192021
C663
4.7/50
C637
4.7/50
C415
10/50
C417
10/50
C418
10/50
C416
10/50
C429
33/16
C427
33/16
C428
33/16
C414
100p
C413
100p
C421
470p
C422
470p
C419
470p
C420
470p
C638
4.7/50
C664
4.7/50
R637
9.1k
R682
9.1k
R641
9.1k
R643
9.1k
R645
100
R646
100
R648
100k
R647
100k
R425
100k
R426
100k
R433
100k
R434
100k
R542
15k
R543
27k
R437
100
R438
100
R435
100
R431
100k
R432
100k
R436
100
R428
2.2k
R427
2.2k
R429
4.7k
R430
4.7k
R415
6.8k
R417
10k
R419
10k
R421
1k
R422
1k
R420
10k
R416
6.8k
R418
10k
R712
47k
R704
47k
R642
9.1k
R644
9.1k
R638
9.1k
R683
9.1k
R640
9.1k
R639
9.1k
R635
100k
R636
100k
5
6
3
2
1
1
4
7
C630
100/16
C629
100/16
C632
100/16
C625
4700p
C626
4700p
C633
4700p
C634
4700p
C623
2200p
C624
2200p
C628
270p
C627
270p
C636
180p
C635
180p
AG
–9V
–
+
–
+
5
6
7
8
–
+
–
+
–
+
5
6
7
4
3
2
8
4
–
+
1
3
2
8
IC606(1/2)
M5218AL
IC605(2/2)
M5218AL
IC605(1/2)
M5218AL
IC606(2/2)
M5218AL
+9V
+
C631
100/16
+9V
AG
AG
AG
–9V
-9V
-9V
+9V
AG
AG
AG
AG
AG
AG
AG
AG
AG
AG
AG
AG
AG
IC404(1/2)
M5218AL
IC404(2/2)
M5218AL
R423
15k
15k
R424
Q401
2SD2144S
Q402
2SD2144S
IO OI
CI
IO OI
CI
IO OI
CI
IO OI
CI
43
5
89
6
12
13
11 10
12
14
7
IC405
(1/4)
IC405
(4/4)
IC405
(3/4)
IC405
(2/4)
JA403(1/2)
MKN1024
JA403(2/2)
MKN1024
1
2
3
4
5
6
L
R
LINE
FG
FG
+9V
L
R
TAPE
IC405 :
TC4066BP
VCCVCC
VCC
VCC
J701
J702
R713 47k
R714 47k
R715 47k
R716 47k
C702
0.01
C703
0.01
C701
47/10
MTF3002
F701
DG1
P00 PE1/TRB
PE0/TRA
Vdd
PD3/CMP3
PD2/CMP2
PD1/CMP1
PD0/CMP0
PC3/Vr1
PC2/Vr0
P63/PIN1
P62/SK1
P61/SO1
P60/SI1
P53/INT2
P52
P51
P50
P43
P42
RES
OSC2
P01
P02
P03
P10
P11
P12
P13
SI0/P20
SO0/P21
SK0/P22
INT0/P23
INT1/P30
PO0/P31
PO1/P32
HLD/P33
P40
P41
TEST
Vss
OSC1
RESDSP
LED1P4LED2
LED3
LED4
LED5
LED6
LED7
REFH
VrefH
AVdd
LRCK
DATAL
DATAR
BCLK
SYSCLK
DVdd
NC
VrefL
AGND
REFL
DGND
MODE2
MODE1
FSEL
TSTOUT
LED8
LSEL1
LSEL2
LSEL4
LSEL3
IS1
KMO1
KMO2
KMO3
KMI1
KMI4
KMI2
KMI3
IS2
SI
SICK
P0
SIRQ
SRDY
SIAK
IC701 PDC031A
DG1
X701
MSS3013
4MHz
2
13
DG1
CH1OUT CH2OUT
MTF3002
F603
IC608
LC78815M
AG
AG
AG
C660
47/10
C662
47/10
C661
47/10
C669
1000p
C670
1000p
C672
1000p
C671
1000p
L606
2.2
+5V
DG1
DG1 DG1DG1
DG1
DG1
FG
+
+
Vdd4
Vss4
D4
D3
D2
D1
D0
RAS
CAS
D3
D2
D1
D0
RAS
CAS
1
72
73
74
75
76
77
78
79
80
DREAD
2
DWAT
3
ASO
4
BCKO
5
LRCKO
6
FS3840
7
ASI
8
BCKI
9
LRCKI
10
FS3841
11
SELC
12
Vdd1
13
OSC1
14
OSC2
15
Vss116Vss2
17
RES
18
SAIF
19
SAOF
20
TEST6
21
TEST1
22
TEST2
23
TEST3
24
TEST4
ADLVss
33
ADL2
32
DARVdd
31
DADR
30
DARVss
29
DALVdd
28
DADL
27
DALVss
26
Vdd2
25
TEST5
L602
2.2
C675
1000P
X601
MSS1017
R687
100
C643
13P
C644
1000P
C645
30P
C657
22P
C658
22P
C659
22P
L601
1.5
33.8688MHz
C655
47/16
+5V
−9V
IC501 (2/2)
UPC4570HA
C515 33/16
C516
1000P
AG
4
3
2
5
MIC
MIC
Lch
Rch
Rch
Lch
DG2
DG2
DG2
WE
RE
DG2
DG1
DG2
R679
100
100
100
R680
R681
: AUDIO SIGNAL ROUTE
POWER SWITCH BOARD ASSY
SW321 : POWER STANDBY/ON
MAIN BOARD ASSY
SW501 : MIC.3 ECOH
FRONT BOARD ASSY
SW201 : SURROUND
SW202 : CHORUS
SW203 : VOC.P.
SW204 : ONE T.K.
SW205 : INPUT SELECTOR1
SW206 : INPUT SELECTOR2
SW208 : INPUT SELECTOR3/TAPE
SW209 : KEY CONTROL
SW210 : KEY CONTROL
SW211 : KEY CONTROL #
DG1DG1DG1 DG1
+9V.2
–9V
MA-990
23
4
A
B
C
D
A-b
A-a
8
A-b
1234
5
+
+
+
+
+
R711
2.7K
R002
1M
R006
10K
R003
22K
R710
100K
R709
2.7K
R004
4.7K
R005
10K
+
+
+
+
+
+
+
+
+
C325
0.01
C324
0.01
C323
0.01
C321
0.01
C322
0.01
+
!
!
!
!
!
!
!
10
9
8
7
6
5
4
3
2
1
10
9
8
7
6
5
4
3
2
1
10
9
8
7
6
5
4
3
2
1
12345
2
1
1
2
BLU
RED
RED
BLU
BLK
BLU
WHT
5
6
4
7
–
+
DG1
X701
MSS3013
4MHz
2
13
DG1
DG1
R537 120k
C533 33p
R536
9.1k
R540
8.2k
R541
47k
AG
AG
AG AG AG AG
C532
0.068
1SS254
D501
Interrupt Det .
C535
1/50
C534
33/16
R538
100k
R539
330k
C536
10/50
IC504(2/2)
M5218AL
–9V
+5V
Q504
2SC2458
Q701
2SC2458
Q001
2SA933S
Q002
2SC1740S
Q003
2SA933S
R708 10k
IC702
M51951BSL
31
2
C706
1/50
C013
3.3/50
C014
100/25
C012
10/50
C708
220/10
C707
0.01
DG1
RD4.3ES
D702
D701
1SS254
DG1
VCC
AG AG AG
AG
+9V.2
D012
RD16JS
D015
1SS254
1SS254D011
1SS254D014
1SS254D010
1SS254D009
D013
1SS254
–9V
+9V
FG
BRN
LIVE
NEUTRAL
BLU
AC 230V
50/60Hz
AC POWER CORD
PDG1003
T002
JKE1002
JKE1003
T001
JKE1001
T003
POWER TRANSFORMER
MTT1016
52341
6
101112
8
9
15
R001 4.7k
FG
MEP1049
CN001
MEP1049
CN321
SW321
MSG1007
MDD1015
17
18
16
3
1
2
6
4
5
12
10
11
9
7
8
15
13
14
POWER SWITCH BOARD ASSY
(MWX1076)
+9V.2
L501
2.2
OUT
COM COM
IN
OUT IN
COM
OUT IN
C002
1000/25
C003
1000/25
C001
1000/25
D003
!
D005
D007
!
D004
!
D008
!
D006
D001
D002
C008
0.1
C009
0.1
C007
0.1
C011
0.1
C010
47/10
C005
47/16
C006
47/16
C004
47/16
+5V
NJM78L05A
IC004
13
2
NJM7809FA
IC001
1
1
3
3
2
!
!
COM
OUT IN
NJM7805FA
IC003
13
2
2
AG
AG
+9V
–9V
IC002
NJM7909FA
VCC
FG
DG1
INPUT.SELECT
LED.DRIVE
KEY.MATRIX
LED.SELECT
D001–D008 :
ERA15–02KFRB
D3
D2
D1
D0
RAS
CAS
72
73
74
75
76
77
78
79
80
MIC
DG2
RESDSP
D
678
MA-990
A
A-b
A-a
5
6
7
B
C
D
A-b
D
9
8
1
23
MA-990
4. PCB CONNECTION DIAGRAM
4.1 MAIN BOARD ASSY
A
A
B
IC404
MAIN BOARD ASSY
IC401
IC606 IC605
IC405 Q402 Q401
4
IC602
IC003 IC002 IC001 IC004
Q001 Q002 Q003
JP
JP
C
To
AC POWER
CORD
To
POWER
TRANSFOMER
D
10
A
1234
LIVE
NEUTRAL
D
CN321
9
8 12 11 10
To POWER TRANSFORMER
5
678
MA-990
003
P
IC603
IC604
IC402 IC503
Q504
IC701 IC702
IC504
Q701
IC502
IC501
A
B
SIDE A
C
CN202
CN201
C
NOTE FOR PCB DIAGRAMS :
1. Part numbers in PCB diagrams match those in the schematic
diagrams.
2. The parts mounted on this PCB include all necessary parts for
several destinations.
For further information for respective destinations, be sure to
check with the schematic diagram.
3. View point of PCB diagrams.
5
6
Connector
P.C.Board
7
Capacitor
Chip Part
CN301
B
SIDE A
SIDE B
A
8
C
D
11
A
B
1
MA-990
23
MAIN BOARD ASSY
A
4
C
C550
D
J501
SIDE B
12
A
1234
5
IC601 IC608
678
MA-990
A
B
C
D
A
5
6
7
8
13
1
23
MA-990
4.2 POWER SWITCH BOARD, FRONT BOARD AND VOLUME BOARD
ASSEMBLIES
FRONT BOARD ASSY
A
VOLUME
B
CN001
A
BOARD
C
ASSY
B
4
A
JA701
POWER
D
SWITCH
BOARD
ASSY
JA505
A
C
JA702
A
VR301−VR305
D
SIDE A
14
B
C D
1234
1
Transistor
Diode
P.C.B pattern
Diagram Indication
Corresponding Part
Symbol
Part Name
E E
or
Resistor
Capacitor
(Non polarized)
Capacitor
(Non polarized)
Zenner diode
Capacitor
(Polarized)
NP
NP
Note :
• A comparison between the main parts of PCB and
schematic diagrams is shown below.
FRONT BOARD ASSY
C
234
MA-990
A
B
VOLUME
B
BOARD
ASSY
POWER
D
SWITCH
BOARD
ASSY
1
C
D
SIDE B
B C D
2
3
4
15
MA-990
Mark No. Description Part No.
Mark No. Description Part No.
4. PCB PARTS LIST
NOTES:•Parts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List.
The mark found on some component parts indicates the importance of the safety factor of the part.
•
Therefore, when replacing, be sure to use parts of identical designation.
When ordering resistors, first convert resistance values into code form as shown in the following examples.
•
Ex.1 When there are 2 effective digits (any digit apart from 0), such as 560 ohm and 47k ohm (tolerance is shown by J=5%,
and K=10%).
560 Ω→56 × 10
47k Ω→47 × 103→ 473 ........................................................ RD1/4PU 4 7 3 J
0.5 Ω→R50 ..................................................................................... RN2H
1 Ω→1R0 ..................................................................................... RS1P
Ex.2 When there are 3 effective digits (such as in high precision metal film resistors).
5.62k Ω→ 562 × 10
Mark No. Description Part No.
LIST OF ASSEMBLIES
NSP MOTHER BOARD ASSY MWM1038
NSP POWER SWITCH BOARD ASSY MWX1076
NSP VOLUME BOARD ASSY MWX1078
MAIN BOARD ASSY
SEMICONDUCTORS
IC001 NJM7809FA
IC002 NJM7909FA
IC003 NJM7805FA
D001-D008 ERA15-02KFRB
COILS AND FILTERS
SWITCH
FRONT BOARD ASSY MWX1077
MAIN BOARD ASSY MWX1079
A
IC004 NJM78L05A
IC401 TC4052BP
IC402,IC404,IC503,IC504 M5218AL
IC603-IC606 M5218AL
IC405 TC4066BP
IC501,IC502 UPC4570HA
IC601 LC83025E
IC602 LC32464P-80
IC608 LC78815M
IC701 PDC031A
IC702 M51951BSL
Q001,Q003 2SA933S
Q002 2SC1740S
Q401,Q402 2SD2144S
Q501,Q502 2SA1048
Q504,Q701 2SC2458
D009-D011,D013-D015,D501,D701 1SS254
D012 RD16JS
D702 RD4R3ES
L601 LAU1R5J
L501,L602,L603,L605,L606,L608 LAU2R2J
L610,L611 LAU2R2J
F601-F603,F701 MTF3002
SW501 MSG3005
1
→ 561 ........................................................ RD1/4PU 5 6 1 J
R 5 0
1 R 0
1
→ 5621 ...................................................... RN1/4PC 5 6 2 1 F
Mark No. Description Part No.
CAPACITORS
C001-C003 CEA102M25L2
C004-C006,C655,C656 CEA470M16L2
C007-C009,C011 CKSQYF104Z50
C010,C660-C662,C701 CEA470M10L2
C012,C415-C418,C505,C513 CEA100M50L2
C519,C530,C531,C536 CEA100M50L2
C013 CEA3R3M50L2
C014 CEA101M25L2
C401-C406 CCSQCH331J50
C407,C408,C507,C516,C522,C524 CCSQSL102J50
C603,C604,C615,C644,C652,C665 CCSQSL102J50
C666,C669-C672,C674,C675,C677 CCSQSL102J50
C409,C410,C425-C429,C508,C515 CEA330M16L2
C521,C523,C527,C529,C534,C537 CEA330M16L2
C601,C602,C611,C612,C618,C620 CEA330M16L2
C642,C650,C651,C673,C676 CEA330M16L2
C413,C414 CCSQCH101J50
C419-C422 CCSQCH471J50
C501,C502,C509,C510,C550,C640 CKSQYB103K50
C641,C653,C654,C702,C703,C707 CKSQYB103K50
C503,C511,C517,C623,C624 CKSQYB222K50
C504,C512,C518,C637,C638 CEA4R7M50L2
C663,C664 CEA4R7M50L2
C506,C514,C520 CKSQYB182K50
C528,C533 CCSQCH330J50
C532 CKSQYB683K50
C535,C607,C608,C617,C706 CEA1R0M50L2
C605,C606,C616,C625,C626 CKSQYB472K50
C633,C634 CKSQYB472K50
C613,C614 CCSQSL152J50
C635,C636 CCSQCH181J50
C629-C632 CEA101M16L2
C627,C628 CCSQCH271J50
C643 CCSQCH130J50
C645 CCSQCH300J50
C657-C659 CCSQCH220J50
C708 CEA221M10L2
RESISTORS
J501,J601-J603,J606 RD1/10S0R0J
J607,J610-J612 RD1/10S0R0J
All Resistors RS1/10S J
K
K
16
MA-990
Mark No. Description Part No.
OTHERS
NSP PCB MNP1063
VOLUME ASSY
CN001 CABLE HOLDER MEP1049
JA401,JA403 JACK MKN1024
JA402 JACK MKN1017
JA501,JA503,JA504 MIC JACK MKN3005
JA502 JACK MKN3006
JA505 CONNECTOR MKP1019
JA701 CONNECTOR MKP1022
JA702 CONNECTOR MKP3007
X601 RESONATOR MSS1017
(33.8688MHz)
X701 RESONATOR (4MHz) MSS3013
EARTH TERMINAL JKF1009
T001 TERMINAL JKE1003
T002 TERMINAL JKE1002
T003 TERMINAL JKE1001
CORD MDB1023
CORD MDB1024
B
RESISTORS
VR301-VR303 (10kΩ-B) MCS3002
VR304 (10kΩ-C) MCS3003
VR305 (50kΩ-B) MCS1014
R301-R303 RS1/10S332J
OTHERS
PARALLEL CORD MDD1016
CN301 CABLE HOLDER MEP3009
PCB MNP1065
Mark No. Description Part No.
POWER SWITCH BOARD ASSY
D
CAPACITORS
C321-C325 CKSQYB103K50
SWITCH
SW321 MSG1007
OTHERS
PCB MNP1066
CN321 CABLE HOLDER MEP1049
PARALLEL CORD MDD1015
FRONT BOARD ASSY
C
SEMICONDUCTORS
IC201 TC74HC154AP
D201,D206,D207,D218 SLR-342VC
D202,D203,D205,D209-D212 SLR-342MC
D214-D217 SLR-342MC
D204,D213 SLR-342DC
SWITCHES
SW201-SW206,SW208-SW211 MSG3006
CAPACITORS
C201 CKSQYB103K50
C202 CEJANP1R0M50
RESISTORS
R204,R205 RS1/10S271J
R201-R203,R206,R208 RS1/10S331J
OTHERS
NSP PCB MNP1064
CN201 CABLE HOLDER MEP3015
CN202 CABLE HOLDER MEP3010
PARALLEL CORD MDD1018
PARALLEL CORD MDD1019
17
MA-990
5. IC INFORMATION
• The information shown in the list is basic information and may not correspond exactly to that shown in the schematic diagrams.
TC74HC154AP (FRONT BOARD ASSY : IC201)
• Line Decoder
Pin Assignment (Top View)
•
Y0 1
Y1 2
Y2 3
Y3 4
Y4 5
Y5 6
Y6 7
Y7 8
Y8 9
Y9 10
Y10 11
GND 12
24 Vcc
23 A
22 B
21 C
20 D
19 G2
18 G1
17 Y15
16 Y14
15 Y13
14 Y12
13 Y11
Truth Table
•
18
19
G1
G2
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
X
H
H
X
X : Don't care
Input
Pin No.
20
D
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
X
X
21
C
H
H
H
H
H
H
H
H
X
X
Selected
23
A
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
X
X
Output (L)
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
Y8
Y9
Y10
Y11
Y12
Y13
Y14
Y15
NONE
NONE
22
B
L
L
L
L
L
H
L
H
L
L
H
H
L
L
L
L
L
H
L
H
L
L
H
H
X
X
Pin
No.
1
2
3
4
5
6
7
8
9
10
11
13
14
15
16
17
Block Diagram
•
18
G1
19
G2
23
A
22
B
21
C
20
D
18
1
Y0
2
Y1
3
Y2
4
Y3
5
Y4
6
Y5
7
Y6
8
Y7
9
Y8
10
Y9
11
Y10
13
Y11
14
Y12
15
Y13
16
Y14
17
Y15
LC32464P-80 (MAIN BOARD ASSY : IC602)
• 256k (65536 word × 4 bits) DRAM
Pin Assignment (Top View)
•
Vss
OE
I/O1
I/O2
WE
RAS
A6
A5
A4
VCC
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
I/O4
CAS
I/O3
A0
A1
A2
A3
A7
Block Diagram
•
5
RAS
16
CAS
14
A0
13
A1
12
A2
11
A3
8
A4
A5
7
A6
6
A7
10
Clock generator No.1
Mode control
Refresh counter
Low address
Column
address
buffer
buffer
Clock generator No.2
262144 bit
memory cell
(256)
Low decoder
(256 × 4)
Sense
amplifier
I/O gate
(256 × 4)
Column decoder
pvi decoder
Clock
generator
No.3
Data input
buffer
Data output
buffer
PCB Bias
generator
MA-990
9
VCC
18
Vss
4
WE
2
I/O1
3
I/O2
15
I/O3
17
I/O4
1
OE
M51951BSL (MAIN BOARD ASSY : IC702)
• System Reset
Pin Assignment
•
M51951BSL
123
Block Diagram
•
R1
R2
1.25V
NJM7909FA (MAIN BOARD ASSY : IC002)
• Voltage Regulator
Pin Assignment
•
1
3
2
1
2
3
19
MA-990
PDC031A (MAIN BOARD ASSY : IC701)
• 4 bits 1 chip Micro-computer
Pin Assignment (Top View)
•
Block Diagram
•
P00
P01
P02
P03
P10
P11
P12
P13
SI0/P20
SO0/P21
SCK0/P22
INT0/P23
INT1/P30
POUT0/P31
POUT1/P32
HOLD/P33
P40
P41
TEST
Vss
OSC1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
42
PE1/TRB
41
PE0/TRA
40
VDD
39
PD3/CMP3
38
PD2/CMP2
37
PD1/CMP1
36
PD0/CMP0
35
PC3/Vref1
34
PC2/Vref0
33
P63/PIN1
32
P62/SCK1
31
P61/SO1
30
P60/SI1
29
P53/INT2
28
P52
27
P51
26
P50
25
P43
24
P42
23
RES
22
OSC2
RES
TEST
OSC1
OSC2
HOLD
TRA
TRB
CMP0
CMP1
CMP2
CMP3
23
19
21
22
16
41
42
36
37
38
39
LC83025E (MAIN BOARD ASSY : IC601)
• Karaoke Digital Signal Processor
Pin Assignment (Top View)
•
SYSTEM
CONTROL
PE
PD
PC
RAM STACK
(512M)
FLAG
D
D
E
SP
P
P
M
L
H
R
PRESCALER
MPX
INTERRUPT
CONTROL
P0 P1 P2 P3 P4 P5 P6
Block Diagram
•
C
Z
D
D
P
P
E
MPX
MPX
A
TIMER0 SERIAL I/O 0
TIMER1
X
Y
ALU
SERIAL I/O 1
ROM
4k
PC
14
9
10
11
12
2913
30
31
32
33 15
POUT0
SI0
SO0
SCK0
INT0
INT1,INT2
SI1
SO1
SCK1
PIN1,POUT1
DREAD
DWAT
ASO
BCKO
LRCKO
FS3840
ASI
BCKI
LRCKI
FS3841
SELC
VDD1
OSC1
OSC2
VSS1
VSS2
RES
SAIF
SAOF
TEST6
TEST1
TEST2
TEST3
TEST4
807978777675747273
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
252627282930313233343536373839
71706968676665
D5
VDD4
VSS4
D4
D3
D2
D1
D0
RAS
CAS
D6
D7
A8
A7
A6
A5
40
64
A4
63
A3
62
A2
61
A1
60
A0
59
SIAK
58
SRDV
57
SICK
56
SI
55
SIRQ
54
VSS3
53
VDD3
52
P4
51
P3
50
P2
49
P1
48
P0
47
ADM3
46
ADMVDD
45
ADM1
44
ADMVSS
43
ADM2
42
ADR3
41
ADRVDD
Sequence Control
Program ROM
Program Counter
Loop Counter
Audio Input 1 (Digital)
Audio Input 2 (Analog)
ADC (L ch)
ADC (R ch)
ADC (MIC)
Audio Output 1 (Digital)
Audio Output 2 (PWM)
DAC (L ch)
DAC (R ch)
DRAM Interface
µP Interface LIFO
Program
Decoder
M-bus
S-bus
Data
RAM
Coeff.
RAM
MUL
ALU/Shifter
ACC
TMP0-7
Coeff.
RAM
20
VDD2
TEST5
DADL
DALVSS
DALVDD
DARVSS
DADR
DARVDD
ALD2
ADL1
ADLVSS
ADL3
ADR2
ADLVDD
ADR1
ADRVSS
6. PANEL FACILITIES AND SPECIFICATIONS
PANEL FACILITIES
MA-990
SPECIFICATIONS
21
Loading...