Pioneer SA-9500II User manual

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MODEL
SA-95OOIICOMESIN FOURVERSIONSDISTINGUISHED
AS FOLLOWS:
This service
manual
is applicable
to the KU-type.
When
repairingthe KC-type,
HG-type,S-type,
please
see
theadditional
service
manual.
CONTENTS
1. SPECTFTCATIONS
.... 5
2. CONNECTION
DIAGRAM 6
3. FRONT
PANELFACILITIES.. 7
4. BLOCK
DIAGRAM 9
5. CIRCUITDESCRIPTIONS
5.1 Equalizer
Amplifier 11
5.2 Tone
Controls 11
5.3 PowerAmplifier 12
5.4 ProtectionCircuit 13
5.5 Power Supply
Circuit 14
6. LEVEL
DIAGRAM 15
7. DISASSEMBLY. 16
8. PARTSLOCATION
8.1 Front
PanelView 18
8.2 Front
Viewwith PanelRemoved. . 19
8.3 Top View 20
8.4 Bottom View . 21
8.5 RearView 22
ADJUSTMENT 23
EXPLODED
VIEWS 24
SCHEMATIC
DIAGRAMS,
P.C.
BOARD
PATTERNS
AND
PARTSLIST
11.1 Miscellanea 32
11.2 Schematic
Diagram 33
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9.
10.
11.
3
UL (U.S.A.) approved
CSA (Canada)
approved
22OV and24OV (Switchable) SEMKO (Sweden),
NEMKO (Norway), DEMKO(Denmark)
and
El (Finland) approved
12OV.
22Ov and24OV
(Switchable) General
export model

11.3
'tI.4
11.5
11.6
11.7
11.8
12. PACKING
SwitchAssembly
(AWS-1
09)
SwitchAssembly
(AWS-1
02)
Phono
Jack
Assembly
(AWX-107)
Equalizer
Amplifier
Assembly
(AWF-024)
Control
Amplifier
Assembly
(AWG-045)
Power
Amplifier
Assembly
(AWH-052)
35
41
42
45
46
50
53

1.
SPECIFICATIONS
Semiconductor
Transistors 55
Diodes 33
Power
Amplifier Section
Circuitry . . . 2-stage
differentialamplil'ier
Parallcl
PPdirect-couoled
OCL.
Continuous
Power
Outputform20Hertzto20,000
Hertz
(Both
channelsdriven)
. . 80watts
per
channel
(8
ohms)
I00 watts
per
channel
(4
ohms)
TotalHarmonicDistortionat2jHertz.to20,000Hertz
Continuous
rated
power
output . . 0.05%
4Owatts
pcr
channel
power
output,8ohms . . . . 0.01%
lwattperchannel
poweroutput,
8ohms. . . . . . 0.01%
IntcrmodulationDistortion
Continuous
rated
powcr
output . 0.05%
4Owatts
per
channel
power
output,8ohms . . . . 0.0'l%
lwatt
per
channel
power
output,
8ohms . 0.01%
Frequency
Responsc 5Hertzto I00,000Hertz
ltdB
Input
(Sensitivity/l
mpedance)
POWER
Al\4PlN ]V/5Okohms
Output ... Speaker A,B,A+B
Headphone: Lowimpedance
DampingFactor
(2}Hertt
to20,000Hertz,8ohms)
. . . 30
Hum
andNoisc
(lHF,
short-circuired,
A network)
. . ll0dB
PreamplifierSection
Circuitry
Equalizer
amplifier:
1st stagedifferential
amplifier
3-
stage
direct-coupled
A class
SEPP.
Control
amplifier: .l
st stagcdifferential
amplif
ter 2-
stagedirect-coupled,
N
FBtype.
Input
(Sensitivity/l
mpedance)
PHONOl
.... 2.5mY110,25,50,10Okohms
PHONO2
.... 2.5mYl10,25,50,lOOkohms
CARTRIDGE
LOAD ... BothPHONOI
and2,
100,200,300,400pF
TUNER 150mV/50kohms
AUX 150mV/50kohms
TAPEPLAYI.... 150mV/50kohms
TAPEPLAY2.... l50mV/50kohms
PHONO
OvcrloadLevel
(
f.H.D.
:0.05%)
PHONO
| .... 300mV
(l
kHz)
300mV
(l
kHz)
PHONO2
Output
(Level/l
mpcdance)
sA-s|500II
Total
HarmonicDistortion
(20H2
to20,000H2) . 0.01%
Frcqucncy
Rcsponsc
PHONO
(RIAA
Lqualiz.rtion) .2OHt
to
20,000H2
10.2d
B
. . 5Hz to50,000H2
_,1d8
MAIN
t8dB(100H2)
suB
16dB
(SOHz)
MAIN
18dB
(10kHz)
SUB
16dB(zOrHz)
TUNER,
AUX,TAPE
PLAY
loncContrrrl
(2dB
stcp)
fREBLf
Filtcr
LOW
BASS
c
. . l50mV
......tu)io,,n.r,,oupoon,'.rt,t';Il
HIC,H.
Loudncss
Contour
(Volumc
controlsc1a1
-40dB position)
Hum and Noisc
(lHF,
shorl-circuilcd,
A network)
PHONO 75dB
TUNIR,
AUX,TAPEPLAY
. . . .95d8
Muting ..0,-20d8
Miscellaneous
Powcr
Rcquircmcnts . . . l20V60Hz
only.
Powcr
Consumption 230watts
(U
L)
490VA
(CSA),
560watts
(Max.)
Dimcnsions ....420(W)x150(H)x376(D)mm
16-9116
x5
118
x 14
13116in
Weight . Without
Package:l6kg
(351b
4oz)
With
Packagc: 11.9kg
(391b
7
ot)
Furnished
Parts
Operatinglnslructions ......1
Connection
Cord
with PinPlugs l
Hcx.
Wrcnch
(Used
for l'asteningVolumc
Knob). . . . . . 1
NOTE:
Specifications
and thedesign
subject to possible modifica-
lion utithoutnotice
due to improuements.
I5Hz
(6dB/oct.)
8kHz
(6dB/oct.)
+6dB
(100H2)
+3dB
(10kHz)
F
tr F'
9.,
Blt
E'
TAPEREC
1
TAPEREC2
PREOUT . .
5

2.CONNECTION DIAGRAM
TURNTABLE
1TUNER
UT-
PUT TURNTABLE
2
Connect
to
ground
terminals
of turntables,
tu
ner,
tape
deck,
etc. GROUND
LEAD
GROUNDING
TO EARTH
A SPEAKER
SYSTEM
CARTRIDGE
TAPEPLAYER
OUTPUTLINE
TAPE
DECK1
DECK
2
INE
OUTPUT
sA-95001I
ACCORD
LINE
INPUT
BSPEAKERSYSTEM
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