Pioneer MA-9 User manual

®) PIONEER
The future of sound and vision.
ervice
c/Manual fee aah
ARP2073
MIC MIXER
VIA-
@ This manual is applicable to the SD type.
CONTENTS
1. EXPLODED VIEW, PACKING AND PARTS
L1G Teveceescecseeeeenreesens sbsasesivededaceacecasesisbueevereeveyesss 2
2. IC DESCRIPTIONS rrrrsrsssssesssesessesetsetereresseseesess 5
3. SCHEMATIC DIAGRAM crresrreeeecesseerereseresesseeens 7
4. P.C. BOARDS CONNECTION DIAGRAM: 11
5. BLOCK DIAGRAMerrrss padsbapethcoeawaieaesedevess 19
6. P.C.B’s PARTS LiSTerrccsscsrceesseesesseeeeessasenes 24
7. PANEL FACILITIES sesseescesscesscesseesesereeseerseesees 24
8B. SPECIFICATIONS crsceesseeseseeseeorreessesernesesereses 26
PIONEER ELECTRONIC CORPORATION = 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153, Japan
PIONEER ELECTRONICS SERVICE INC. P.O. Box 1760, Long Beach, California 90801 U.S.A.
PIONEER ELECTRONICS OF CANADA, INC. 505 Cochrane Drive, Markham, Ontario L3R 8E3 Canada
PIONEER ELECTRONIC [EUROPE] N.V. Keetberglaan 1, 2740 Beveren, Belgium
PIONEER ELECTRONICS AUSTRALIA PTY. LTD. 178-184 Boundary Road, Braeside, Victoria 3195, Australia TEL: [03] 580-9911

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1.
EXPLODED
VIEW,
PACKING
AND
PARTS
LIST
NOTES :
¢ Parts without part number cannot be supplied.
*
The
A,
mark
found
on
some
component
parts
indicates
the
impotance
of
the
safety
factor
of
the
part.
Therefore,
when
replacing,
be
sure
to
use
parts
of
identical
designation,
*
Parts
marked
by
“©”
are
not
always
kept
in
stock,
Their
delivery
time
may
be
longer
than
usual
or
they
may
bé
unavailable.
Mark
No.
Part
No.
Description
Mark
No.
Part
No.
Description
A
1
CM-—22B
Strain’
relief
101
MAIN
unit
AN
2
PDG1013
AC
power
cord
102
MCAB
unit
A
3
REK-—076
FU101,
FU102
103
MCJB
unit
400mA
Fuse
104
SWLB
unit
4
RBH1144
Spring
105
CNB1
unit
A
5
RTT1140
Power
transformer
106
eerevereie
6
VXA1289
Insulator
assembly
;
107
Chassis
A
7
PSB1002
Voltage
selector
108
P.C.B
holder
8
PACi372
Power
button
109
Power
joint
9
RAC1523
Key
control
button
110
Rear
panel
A
10
AKP-~507
.
AC
socket
111
succes
11
AAB1063
Rotary
knob
112
Connection
cord
assembly
12
PYY1050
Bonnet
113
Front
panel
13
RXA1354
Push
knob
assembly
114
Name
plate
14.
tte
ens
115
P.C.B
base
15
RRB1071
Operating
instructions
116
Angle
16
RRG1002
Operation
guide
:
17
RHA1052
Pad
(F)
18
RHC-154.
Packing
sheet
19
RHG1207
Packing
case
20
fe
aie
21
RDE-O10
Connection
cord
22
RXX1306
Front
panel
assembly
—S
23
RAH1711
Display
panel
24
BBZ30PO60FMC
Screw
nN
oi
BBZ40PO80FZK Screw
IBZ30P100FMC Screw
BBZ26PO80FMC Screw
BBZ30PO80FZK Screw
RHA1053 Pad (R)
RNK1377 REC lens
WNNNN oOoOON ®

In this
IC101 (
IC109 (
1109 (:
17
Correlat:
«
.
IC109 (¢
10112 (1
These
washer
and
nut
are
supplied
with
VR501
to
VR505
of
MCAB
unit.
*1:

21
2. IC DESCRIPTIONS.
In this section, ICs truth tables are described.
16101 (NJU4052BD)
- Front switch
Stereo one-
MPX/stereo touch karaoke
IC109 (1.43), (2/3)
IC110 (1.73), (273)
10109
(3,73),
10110
(3/3)
(NJU4053BD)
[Pin
[10
wich
sowed]
Made
L
Pin
2
side
|
Key
controller
ON
(#
or
b)
Logic
Lt
|
Pin
1
side
|
Key
controller
OFF
(4)
L |Pins 2, 5 side|Power OFF (through)
Logic |
Pins
1,
3
side|Power
ON
(various
operations)
10114 (NJU4053BD)
L 1|Pins 2, 12 side| TAPE REC ON
Logic os
are Ping 1, 13 side} TAPE REC OFF
IG504 (1/3) (NJU4053BD)
[o
[Bench
see|
ee
Voice
enhancer
switch
OFF
Logic
Pin 3 side Voice enhancer switch ON
I¢504 (3/73)
=
Pin
12
side
|
Vocal
partner
switch
OFF
Ogic
Pin
13
side
|
Vocal
partner
switch
ON
IC601
(SN74LS145N)
:
BCD—TO—DECIMAL
DECODER//DRIVER
Truth table
ay
Pint2
|
Pin13
Pint5
|
Pint
Pind
Pind
| a
3 XN
<
fo)
<
o
Decimal
|
|
BEB
Oo
=
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pe} 3
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pu gy ea fee ee a) Pe a Or od
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4
PECEEE PRY
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Be
Be
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G A
Flee
ps ia (se
4
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=|
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= |=
|
=| =
_ w
= — _ a N
=| |
|
~
ol
Logic diagram
Output
mi __
tt
[ies
|
ia
| an ee ee Be
* : Open collector

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16504(2/3)
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UMAKA
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