Pioneer A-09 User manual

@) PIONEER’
The Art of Entertainment
Service
Manual
STEREO AMPLIFIER
A-09
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
ORDER NO.
ARP2858
CONTENTS
1. EXPLODED VIEWS, PACKING AND PARTS LIST -:: 2
2. SCHEMATIC AND PCB CONNECTION DIAGRAMS::: 8
3. PCB PARTS LIST cccccsreerecceeee eee seeceseeeeeeaeerneeressea 51
4. BLOCK DIAGRAM cereccccrcccerettettteerreeneteeeeeenennneres 55
5. CIRCUIT DISCRIPTION coreeceeccecresteeeeteceesteeeeeeereees 56
6. ADJUSTMENTS ccccccecerreeecceeeceeerereeceeeeeeenteesseanen 57
7. PANEL FACILITIES rerrretecrcereteeteecceccecereteeteenseanes 58
8. SPECIFICATIONS ccccececcececcreeeeceseeeeeeeeeeeeensaneeeene 60
PIONEER ELECTRONIC CORPORATION 2-1, 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. 300 Allstate Parkway Markham, Ontario L3R OP2 Canada
PIONEER ELECTRONIC [EUROPE] N.V. Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS AUSTRALIA PTY. LTD. 178-184 Boundary Road, Braeside, Victoria 3195, Australia TEL: [03] 580-9911
© PIONEER ELECTRONIC CORPORATION 1994 SEE ee eeerna ree

A-09
1. EXPLODED VIEWS, PACKING AND PARTS LIST
NOTES:
® Parts marked by “NSP” are generally unavailable because they are not in our Master Spare Parts List.
®
The
A\
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.
® Parts marked by “ ®” are not always kept in stock. Their delivery time may be longer than usual or they may be unavailable.
1.1 PARTS LIST
Mark No. Description Parts No. Mark No. Description Parts No.
1 ROTARY KNOB L AAB1285 46 SHEET AEE1014
2 ROTARY KNOB §S AAB1286 47 TOP PAD AHA2031
3. POWER KNOB ASSY AAD2281 48 BOTTOM PAD AHA2032
4 ESCUTCHEON AAH1059 49 PACKING CASE AHD2757
5 INDICATOR LENS AAK2303 50 DIODE 1 ASSY AWZA863
6 ESCUTCHEON AAK2304 51 PHONO BALANCE ASSY AWZ4864
7 SASH SPACER AAK2305 © 52 POWER R I/O ASSY AWZA250
8 BONNET ESCUTCHEON AAK2306 © (POWER L I/O ASSY) AWZA249
9 ESCUTCHEON S AAK2317 NSP 53 VINYL POUCH AHG1163
10 AL PANEL AAP1250 A 54. TERMINAL 2—P AKC -—071
11 INPUT ASSY AWZ4861 NSP 55 GROUND TERMINAL AKE —046
12. VOLTAGE AMP ASSY AWZA862 56 SPEAKER TERMINAL 1—P AKE1046
13. WASHER WS40PKI 57. SPEAKER TERMINAL 1 —P AKE1047
14. BINDER AEP—215 58 FUSE HOLDER AKR1005
15 SCREW ABA —298 NSP 59 DUST COVER AKT1046
16 SCREW (STEEL) ABA1006 NSP 60 CHASSIS BASE AMAI1010
17. SCREW (STEEL) ABAIOI1 61 HOLDER AMR1178
18 SCREW (STEEL) ABA1050 NSP 62 POWER SWITCH HOLDER AMR2405
19 SCREW ABA1056 NSP 63 FOOT AMR2468
20 SCREW ABA1022 NSP 64 VOLUME STOPPER AMR2458
21 SCREW ABA1I156 NSP 65 SIDEPANELR ANA1203
22 WASHER (COPPER) ABE1001 NSP 66 SIDE PANEL L ANA1204
23 BUSH ABFI015 67 FRONT PANEL A ANB1516
24 COIL SPRING A ABH1056 68 FRONT PANEL B ANB1537
NSP 25 SPACER RING AEB1080 NSP 69 REAR PANEL L (MTL) ANC2236
NSP 26 RUBBER RING AEB1185 NSP 70 REAR PANEL R (MTL) ANC2237
NSP 27. AC CORD HOLDER AEB1200 71 TOPPLATEA ANE1358
NSP 28 DAMPERA AEB1204 72 TOP PLATE B ANE1359
NSP 29 DAMPER B AEB1205 NSP 73 BOTTOM PLATE ANF1089
NSP 30 DAMPERC AEB1206 NSP 74 PCB HOLDER ANGI745
NSP 31 VR DAMPER RUBBER AEB1207 NSP 75 EARTH PLATE ANG1664
NSP 32 RUBBER AEB1210 NSP 76 CHASSIS HOLDER ANG1665
NSP 33 RUBBER AEB1211 NSP 77 PCB HOLDERC ANG1667
NSP 34 RUBBER STOPPER AEB1215 NSP 78 PCB HOLDERG ANG1668
NSP 35 MOUNTING PLATE AKF1021 NSP 79 SIDE SASH HOLDER ANG1737
NSP 36 COVER AEC —294 NSP 80 AC CORD COVER ANG1672
37. BINDER AEC —826 NSP 81 CHEMICON METAL BAR ANG1673
38 NYLON RIVET AEC1160 NSP 82 PCB HOLDER H(MTL) ANG1675
39 HOLDER - AEP —098 NSP 83 EARTH PLATEB ANG1696
NSP 40 AC CORD CATCHER AEC1397 NSP 84 CHEMICON BAND ASSY L ANG1721
NSP 41 SHIELD PLATE ASSY AEC1401 NSP 85 CHEMICON BAND M ANG1722
NSP 42 PVC PANEL AEC1409 NSP 86 CHEMICON PLATE ANG1723
NSP 43 SHIELD PLATE ASSY AEC1432 87 TRANSISTOR COVER L ANG1724
NSP 44 SHIELD PLATE ASSY AEC1458 88 TRANSISTOR COVER M ANG1725
NSP 45 SHIELD PLATE ASSY AEC1434 @ 89 PROTECTION ASSY AWZA251

A-09
Mark No. Description Parts No. Mark No. Description Parts No.
NSP 90 HEAT SINKR ANH1382 As: 138 )~—- Q26(Q25) TRANSISTOR 2SA1837
NSP (HEAT SINK L) ANH1380 A139 ——- Q30(Q29) TRANSISTOR 2SA1837
NSP 91 HEAT SINK(MTL) ANH1385 A140 Q18(Q17) TRANSISTOR 28C4793
NSP 92 REAR BOX A(MTL) ANK1486 A. 141_~—s Sl PUSH SWITCH ASG — 353
NSP 93 REAR BOXB ANK1206 A 142_—s Tl POWER TRANSFORMER ATS1 487
NSP 94 REAR BOXC ANK1207 143. VARIABLE RESISTOR ACW —133
NSP 95 REAR BOX D ANK1208 NSP 144 SHIELD PLATE ASSY AEC1437
NSP 96 REAR BOXE ANK1209 NSP 145 SHIELD PLATE ASSY AEC1436
NSP 97 SHAFT ASSY ANL1054 146 SCREW (STEEL) ABA1047
NSP 98 LONG SHAFT ASSY ANL1051 147. SCREW ABAI114
99 SCREW BMZ30P140FCC 148 SCREW ABZ35P080FCU
100 SCREW IPZ30PO80FCC 149 SCREW ABZ35P250FCU
101 SCREW IPZ30P120FCU 150 SCREW AMZ30P0SOFCU
102. INSTRUCTION MANUAL ARE1321 151 SCREW IBZ30P250FCU
(English/French/German/Italian/ 152. SCREW PMZ30P0SOCAD
Swedish/Dutch/Spanish/ Portguese)
153. SCREW PMB40P160FCU
@® 103 FUNCTON ASSY AWZA252 154 SCREW PMB40P300FCU
@© 104 DIODE 2 ASSY AWZA4253 155 WASHER WB40FCU
@® 105 LED ASSY AWZA274 156 NUT ABN—073
© 106 POWER R NPN ASSY AWZ4530 157 NUT NB40FCU
@ (POWER L NPN ASSY) AWZA4528
158 NUT NK70FCU
107 SCREW BMT30P080FCU NSP 159 DAMP PLATE A ANK1214
108 SCREW BMZ30P080FCU NSP 160 DAMP PLATE B ANK1215
109 SCREW BPZ30P120FZK NSP 161 DAMP PLATEC ANK1216
110 NUT NK90FCU NSP 162 TAPE AEH1020
111. NAME PLATE PAN1262
NSP 163 TAPE AEH1021
112 SCREW PMZ40P060CAD NSP 164 TAPE AEH1022
113. SCREW BBZ40P120FCU 165 RUBBER SHEET AEB1012
114 SCREW (STEEL) ABA1009 NSP 166 SPACER AEB1216
115 Cl ELECTR.CAPACITOR ACH1221 NSP 167 RUBBER AEB1222
(33000,1F/50V)
168 WASHER ABF1016
116 C2 ELEBCTR.CAPACITOR ACH1221 169 WASHER ABF1027
(33000LLF/S0V) 170 WASHER ABE—053
117. C3 ELECTROLYTIC CAPACITOR ACHi222 NSP 171 PCB HOLDER ANL1052
(12000 F/56V) NSP 172 SHIELD PLATE ASSY AEC1455
118 C4 ELECTROLYTIC CAPACITOR ACH1223
(12000,F/56V) 173 SCREW ABA1054
174 SCREW PMZAOPO80FCU
A 119) C5 CAPACITOR (0.01/AC400V) | ACG1003 175 BINDER AEC —093
A 120.) C6 CAPACITOR (0.01/AC400V) ACG1003
“A 121.) AC POWER CORD ADG1093
A 122. FUSE I=T2.5A,V=250 AEK —512
@© 123. POWER R PNP ASSY AW7ZAS531 Note: The descriptions in parentheses for No. 52, 90, 106, 123, and
125--140 are for the L side heat sink assy.
© (POWER L PNP ASSY) AWZA4529
@ 124 REC SEL. SW ASSY AWZA4532
A125. Q4(Q3) TRANSISTOR 2SA1265N
A126 ~—- Q8(Q7) TRANSISTOR 2SA1265N
A 127. Q12(Q11) TRANSISTOR 2SA1265N
A128 ~—- Q16(Q15) TRANSISTOR 2SA1265N
A 129s Q2(Q1) TRANSISTOR 2SC3182N
A 130) Q6(Q5) TRANSISTOR 28C3182N
A131. Q10(Q9) TRANSISTOR 2SC3182N
A132. Q14(Q13) TRANSISTOR 2SC3182N
A 133 Q24(Q23) TRANSISTOR 28C4793
A134. ~—- Q28(Q27) TRANSISTOR 28C4793
A 135) Q32(Q31) TRANSISTOR 2SC4793
A 136 = Q20(Q19) TRANSISTOR 2SA1837
A137 Q22(Q21) TRANSISTOR 2SA1837

A-09 |
1.2 PACKING
47 (2/2)
102
<a
48 (2/2)
47 (1/2)
7
53

NOTE:
Screws
adjacent
to
v
mark
on
product
are
used
for
disassembly
R side heat sink assy (Top view)
(The L side heat sink assy is symmetrical with the R side heat sink assy.)
#3. .No. 151
iY,
5)
Te
SBN
CY
7
ee
R side heat sink assy
Bottom view
Rear box section
&
>
o
S
c
2
o
3 3S
3S
a
8 8
E
a
4 oO
L side heat sink assy
Front panel section (Rear view)
\\
3°
WAN
1.3 EXPLODED VIEWS
Rear box section (Top view)

A-09
2. SCHEMATIC AND PCB CONNECTION DIAGRAMS
2.1
OVERALL
SCHEMATIC
DIAGRAM
eS
NOTE
FOR
SCHEMATIC
DIAGRAMS
(Type
1A)
'
SS
1.
When
ordering
service
parts,
be
sure
to
refer
to
7%
OTHERS:
=~
i
“PARTS
LIST
of
EXPLODED
VIEWS”
or
“PCB ao
ake
Aen
point
”
°
:
Measurement
point.
PARTS
LIST”.
e
The
A
mark
found
on
some
component
parts
indicates
the
im-
POWER L
NPN ASSY
(AWZ4528)
(ap SCH-6)
POWER L POWER R
PNP ASSY NPN ASSY
(AWZ4529 ) (AWZ4530)
(=> SCH-6) (=> SCH-7)
POWER R
PNP ASSY
(AWZ4531)
(=® SCH-7)
Tt?
portance of the safety factor of the parts. Therefore, when re-
2. Since these are basic circuits, some parts of them or the ; : : : :
placing, be sure to use parts of identical designation.
values of some components may be changed for improve-
ment. 8. SCH—O ON THE SCHEMATIC DIAGRAM:
3. RESISTORS: e SCH—D indicates the drawing number of the schematic dia-
Unit: k:kQ, M:MQ, or Q unless otherwise noted. gram. (SCH stands for schematic diagram.}
Rated power: 1/4W, 1/6W, 1/8W, 1/10W unless otherwise 9. SWITCHES (Underline indicates switch position):
OC DETEC
CONTROL
+12V
oe
6
Ala
4 POWER L 1/0 170 noted. Si POWER
auetiaek ASSY ae ascsiabe tas Tolerance: (F): +1%, (G): +2%, (K): +10%, (M): +20% or +5% un-
MGS
eee
19)
A
At
eee:
14)
A
less
otherwise
noted.
REC
SEL.
SW
ASSY
2sc3iaen 2saszenn asc3ieen 25al2ese 4. CAPACITORS: $802 REC SELECTOR
avs any aes, aes Unit: p:pF or pF unless otherwise noted.
A <9) QS A Ay 14) A Ratings: capacitor (uF)/ voltage (V) unless otherwise noted. FUNCTION SW ASSY
ascsiein Benl2eon asesiabe aoa Rated voltage: 50V except for electrolytic capacitors. $801 INPUT SELECTOR
4 ae3 ‘
5. COILS:
“©
3
2S5C3182N
' A At
yA
2804793
a1
ced
2SA1837
a2
16Or,
2Sal2esn
Unit: m:mH or pH unless otherwise noted.
6. VOLTAGE AND CURRENT:
: Signal voltage at rated output.
VL jJor+ Vv:
DC voltage (V) at no input signal unless otherwise noted.
Value in{ ) is DC voltage at rated power.
© mA or+ mA:
OC current at no input signal unless otherwise noted.
02
A
2SA1837
at
A
2SC4793
CND
on PHONO BALANCE ASSY aay
(AWZ4864 )
(= SCH-3)
CNSo7
BALANCE
28C4793 2sc4793
Os; A
CONTROL
DIODE 2
SOURCE!
2-1 +1eM ASSY
eaunces® DG DETECT (AWZ4253 )
:
ees
CONTROL
(=>
SCH-8)
3 GNo +1ev
2 TUNER
OND
HONG
cx)
PROTECTION
[
PaRnTECTLON
:
CONTROL
ASSY
Fs
=
+lev
(AWZ4251
)
=
ena
(=>
SCH-8)
:
=
CONTROL
a
+12¥
J 4
|
CNO
:
=
CONTROL
ro!
+12V
oe
gD
mae
lh
rl
ire
GND
a
())
iT
=
+h
|
Sela
on
iar
eae
ee
=.
r]
a
rT
me
Bie
GND
ft
H
HH
:
{
z
REAR
BOX
PHONO
L
eS
-
fe
.
HH
Be
oe
HH
(|
GND
:
Space
8
PHONO
R
-
;
*
=
428V
z
ane Sere,
Ua
gies
ye
_
"
ae
ota
:
:
Cee
-
ae
a
a“
—
ft
—th
128V
:
es
Se
tats ==
:
Ss
af,
Eaeies
| as
-28V
vey
he
—3>
=
ane
—
eg
|
Ht
U.GND
pees
|
|
|
PHONO.
GND
.
aun.
a
fs
-
-
new
=
a
Si
t=
t
tT
R.GND
Ds
see
See
?
-
Cpe
i
—_-
3 -
Be
he
an
H
H
7
|
= =o
HEAT
SINK
Oh
a
J
PLE
INPUT
ASSY
ot
uso
‘
(AWZ4861
)
fay
sono
(ean i
=
TABED/DAT
(=>
SCH-2)
—!
<n
nes fac
oe
es
CONTROL
CEM1-CON
a
PLATE
GND
AMP
+tev
LLIN
(AWZ
4862)
=
=
(=>
SCH—-S)
:
4
ot
5
dst
4
VOLTAGE
AMP.L
ae
=
epee
raya
aks
3
=
we
:
F
Ty
nt
TRANS
GND
SCREW
GND Scena
eet
= =
iow
=
TTI
ea
DIODE
1
FROW
L
VOL.
lid
is
-
:
7
ASSY
TO
L
VOL.
1P710
AC
(AWZ
4863
)
GND
7
ene
-
oe
mar ;
wip,
ac
(=e
SCH~-8)
A
VOLTAGE
AMP.R
=
=
=f
:
-
=
FUNCTION
SW
“AC
POWER
CORD
GND
ball
i
ADG1093
ASSY
AC220-230V
S
CND
3
i
me
(AWZ4252)
TY
es
A
50/60Hz
a
|
er
=
=
a
POWER
5
pee
=
:
cra
f
REC
SEL.SW
ASSY
Pea
LED
ASSY
ioe
ai
2
C
2
(AWZ4532)
Leo
(AWZ4274)
foo
a
°
GND
=
(m>SCH-—4)
:
GND (=>
SCH—4)
v2
A
ASC-SS3
O
8
A
sbee5i2 hee
fo} REAR BOX LC is 34 cae J
om
b
J35 J3o
Jay
ACW-133
i: i BOTTOM PLATE
REAR PANEL REAR PANEL
OVERALL OVERALL
sl
ey
sogunts|
SCH-1

>
2.2 INPUT ASSEMBLY
@ This diagram is viewed from the foil side.
A
Y22A 3ONAJAS ONVOHS OT
(S~899+) E02uD
Y22A 3OVAJAG OVOHS OT
(S-9899e) AOeND
YeeA TUG!
q
Fe
Fie ale 8 8 ait]
oe PO Sleds | °
*oere U OT) Eo oy Spee
uh
ft
om
Av:
caren]
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tro
Oo
a Fhe 42/2/19 ests fy a) %) 6
Y22A
3OVAJAS
OVOHF
OT
Biot
2
©
56
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peg
(S~899¢)
Oreud
gs
|
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8110
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op
AG
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asta
|
Y22A
3OVAJAG
OVOHS
OT.
Of
oF
-
=
TUS
|
($~@99—)
§
reud
m
AS)
6
9
outs
©
d-8ae!tqua
a ae cee
|
Sie
tee
hob
Ss
Y22A
IMA
3DATIOV
OT
Toa
(b~gd9e)
SOEUD
Y22A
3OVAJAS
OVOHG
OT
Y22A
3DVAJAB
OMOHY
OT
(S-899e)
EDEHS
(S—899-)
SOend
Y22A
GMA
3DATIOV
OT
($-899e) rOEND
(T-899+) @
Y22A 3ONAJAG OUOHA OT
(¥-899+)
@)
($-899-)
roend
spuaieiiiiog! «a (v-899+) @ ie)
(T-999e) SS
©
oe
aE
(v-899+)
@
12

A-09
@ This diagram is viewed from the mounted parts side.
EM
TO PHONO BALANCE ASSY >)
CNSO3 (~PCB-2)
NOTE FOR PCB DIAGRAMS:
1, Part numbers in PCB diagrams match those in the schematic
diagrams.
2. A comparison between the main parts of PCB and schematic
diagrams is shown below.
TO PHONO BALANCE ASSY
CN504 (4PCB-—2)
INPUT ASSY
tch
a o's
B Symbol in Schematic Part Name
Oragrams
Q504
E60
aon Transistor
Q504 Q504 Q504
B © 035
o+4-0 Diode
6203 0203
‘aes
6")
oo Capacitor
C513 (Polarized)
—
3. The transistor terminal marked with E or shows the emitter.
=
doe
5
4.
The
diode
terminal
marked
with
@
oC
shows
cathode
side.
[-}i8 © © eNf6 01 5. The capacitor terminal marked with © or C shows negative
= — —a hb — “ terminal.
fo) 2 Or ne i
ay HO ° oT ye oO.
Lull PAL ON AY
Rae’ pO) | o5 Sone gay
C aii O a FA | oy 7] ov ov) ’
° le 7) le a) Qa le Bile. Xt
°°
©
|
M
o
ale
TO
PHONO
BALANCE
ASSY
alia AWZ—o—o4et qi) gig CA ae lo CNS10 (4PCB-—2)
=
Yas
©
b
ae
$a}
oo
coo
8
6
|NPUT ze“ . : Fe fo or ? Coees TO PHONO BALANCE ASSY
ANP 1568-D les ley le ? le o io] lo 9° lo le ly NStaawwetos CN512 (~PCB-2)
ms SeaNncaac~ +
Load 3 =e
Seinen mesee jE Sa: cy Rs
— ——
TO VOLTAGE AMP ASSY
TO PHONO BALANCE ASSY CN302 (4=PCB—4)
ll ie Ni TO PHONO BALANCE ASSY
TO
VCLTAGE
AMP
ASSY
CNSO02
(>PCB-2)
CN301 (4PCB-4)
@ (+P cB-7)
TO PHONO BALANCE ASSY
CNS501 (-PCB-2) = @® (-PcB-7)
0 @ (PcB-7) et
——_ | © -PcB-7)
@ (-PcB-7) ——_— fr
13

_ INPUT ASSY (AWZ4861)
a ae
ayi02
od ASRIOIS
o
R102
——2 aseroie
cD #| E a eee a
Cr ze 0) a
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ctor
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4
RyDIO
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- °
ayiio
-: ASRIDIS
R1e
14g" BD)
RYIOS
ofase iors
(6). -
ACHI182
4%
J TO VOLTAGE AMP ASSY
CN301 (+SCH—5)
_
© SCH-8)
TO VOLTAGE AMP ASSY
CN302 (-SCH—S)
Eb
LeSsicine tee
+28¥
(+SCH-8)
=-@
207 eG
TAPEI| ge as ieee
/DAT “4
:
a oTe
3e =
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:
i
ft * RIO?
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i 7
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TAPEQ| = ©
Te
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# lL.
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es, ow
ae
TAPED
REC.
INPUT ASSY
SCH-2
“| | |
CN509 (-SCH—3)
a
2 a
Dz
«a?
! TO PHONO
(+SCH-3)
ie
CNSO1 CN
| BALANCE ASSY
TO PHONO BALANCE ASSY
CNS10 (4SCH-3)
TO PHONO BALANCE ASSY
CNSO3 (-SCH-3)
TO PHONO BALANCE ASSY
CNS04 (~SCH-3)
PHONO R
_ Sei Slanal: route,
102
L t
RY Io® LINE
pie
wasto4-02
4 ie g—t+ LINE R i
tL]
pile .
waside-o2 ‘
RY107
TAPE?
L
;
b107 :
ae :
RY! 00 TAPE2 R :
0108 :
wesied-b2 :
as eee TAPED L :
D106 :
W39104-02 :
RY) 08 TAPED R '
108 ‘
wss(d4-o2 :
RY101 CD L ‘
AY102
ae
0x07
0:
>
an
YA +V2oV
poe cb
wt
95 LINE
TAPES
<t J
zy TAPE2
@ S|sources
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17