Pioneer TX-9500II User manual

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Type Voltage Remarks
KC 120V
only CSA (Canada)
approved with de-emphasis
selectorswitch
(25psl75psl
KU 120V
only UL (U.S.A.) approved with de-emphasis
selectorswitch
l25trs/75psl
HG 22OY and 240V (Switchabte) SEMKO (Sweden),
NEMKO (Norway), DEMKO (Denmark)
and El (Finland)
approved
S110V,
120V,
22OV
and
240V
(Switchabte) Generalexport model with de-emphasis
selectorswitch
l25ysl50ps/75psl
TX-g'5ClCltr
MODEL
TX-gsOOII
COMES
tNFOUR
VERSIONS
DISTINGUISHED
AS
FOLLOWS:
. Service
informations
forTX-9500II/KU
isdescribed
onpage
5through
52inthismanual.
o Forservacing
of Kc, SandHGtypes
please
refer
to TX-9500II/KUmanual
with theexception
of
descriptions
inthe
"Additional
ServiceManual"
(p.53-p.86).
CONTENTS
1.
2.
3.
4.
5.
CONNECTION
DIAGRAM
SPECIFICATIONS
BLOCK
DIAGRAM
5
6
7
I
FRONT
PANEL
FACILITIES
CIRCUIT
DESCRIPTIONS
5.1 AMTuner
5.2 FM
Tuner
DISASSEMBLY
5.3 REC
LEVEL
CHECK
5.4 Power
Supply
CircuitSignal
Generator
Circuit
11
11
15
6.
7.
15
16
20
21
PARTS
LOCATION
7.1 Front
Panel
View
7.2 Front View with Panel
Removed 17
18
19
7.3 Top
View
7.4 RearPanel
View
8. DIAL
CORD
STRINGING

9. ADJUSTMENTS
9.1 FMSection 22
9.2 AMSection 26
10. EXPLODED
VIEWS
10.1 TopSide 27
1O.2 Bottom
Side. 29
10.3 Nomenclature
of Screws,
Washersand
Nut ... . . . 31
11. PACKING 32
12. SCHEMATIC
DIAGRAMS,
P.C.BOARD
PATTERNS
AND
PARTSLIST
12.1 Schematic
Diagramand
Miscellaneous
PartsList 33
12.2 FMFront
End
(AWB-023)
. 36
12.3 AMFM
lFAssembly
(AWE-070)
... 37
12.4 MPXAF Assembly
(AWD-009) 45
12.5 PowerSupply
Assembly
(AWR'128) 50
Additional
Service
Manual
1. CONTRAST
OF
MISCELLANEOUS
PARTS 54
*
2. KCTYPE
2.1 Schematic
Diagram
and
Miscellaneous
PartsList
2.2 PowerSupply
Assembly
(AWR-I29)
2.3 Packing
3. HGTYPE
3.1 Schematic
Diagramand
Miscellaneous
PartsList
3.2 MPXAF Assembly
(AWD-008)
3.3 Power
Supply
Assembly
(AWR'I30)
3.4 Packing
4. STYPE
4.1 Schematic
Diagramand
Miscellaneous
PartsList
4.2 MPX
AF Assembly
(AWD-010)
4.3 Power Supply
Assembly
(AWR-I31)
.. ..
4.4 Switch Assembly
(AWX-113)
..
4.5 Packing
56
59
61
62
65
70
73
74
77
82
85
86

1.
SPEC|FtCATIONS
Semiconductors 5
15
FETS
lCs
Transistors ......12
Diodes ....19
FM Section
Circuitry . . . MOS FET 2-stageRF ampli-
fier,
5-gang
variable
capacitor,
lF Band
Selector,Wide-band
linear detector, doublebal-
anced
NFB type PLL MPX
built-in p ilot signal auto
cancel
ler.
UsableSensitivity
. . MONO: 8.8dBf
(1.59V)
50dB
Quieting
Sensitivity. . MONO: 13.2dBf
(2.5tN)
STEREO:36.1dBf
(35pV)
Signal-to-Noise
Ratio
at65dBf MONO: 82dB
STEREO:71dB
Distortion
at
65dBf MoNo: wlDE NARRow
100H2 0.05% O.OIY,
l kHz 0.05% O.jlY'
10kHz O.07o/o 0.1Yo
15kHz 0.12Y"
STEREO:
100H2 0.17o O.3Vo
l kHz 0.07o/o 0.25%
lOkHz 0.2Yo 0.5%o
15kHz O.57o
Capture
Ratio.. . 0.8d8 2.0d8
AlternateChannel
Selectivity. . . 35dB 85dB
StereoSeparation.. ..lkHz: 50dB 45dB
50Hz
to 15kHz: 35dB 30dB
Frequency
Response 20Hzto 10kHz+0.2dB
2oHz
to
r
stHzloo']aa
SpuriousResponseRatio
. . 11OdB
lmage
ResponseRatio. . . . 120d8
lF ResponseRatio . 105dB
AMSuppression
Ratio
. . . . 65dB
Muting
Threshold . . 19.2dBf(5
ttY),34.1d8f(28pv)
Subcarrier
Product
Ratio
. . 11dB
SCAReiection
Ratio
. . . . . 62dB
Antennalnput
. ... 30Oohmsbalanced
75ohmsunbalanced
TX-s|5clCltr
AM Section
Circuitry ...lstageRFamplifier3-gang
variablecapacitor
Sensitivity
lHF,ferriteantenna
.. . 300pV
lHF,
external
antenna. . 15pV
Selectivity . . 30dB
Signal-to-Noise
Ratio.. . . . 55dB
lmage
ResponseRatio
. . . . 70dB
lF ResoonseRatio.. .... 65dB
Antenna ... Built-in ferrite loopstick
antenna
Audio Section
Output
(
Level/lm
pedance)
FM
('100%
MOD.) FIXED: 650mV/4.2kO
VARIABLE:50mVto
1.3V/3.6ks2
AM (30%
MOD.) . FIXED: 2OOnYl4.2kQ
VARIABLE:
'l5mV
to
400mV/3.6kO
Miscellaneous
Power
Requirements 120V60Hz
only.
PowerConsumption
. . . . . 25W
Dimensions . a20(W)x150(H)x395(D)
mrr
16-9
|
16x5-7
18x1
5-9l1
6 in
Weight .... WithoutPackage:
9.5kg
(201b
15oz)
WithPackage:
11.0kg
(241b
4 oz)
Furnished
Parts
FMT-typeantenna ....1
Operatinglnstructions ......1
ConnectionCordwithPinPlugs .....I
Hex.Wrench
(used
forfasteningTuning
knob). . . . . . . 1
NOTE:
Specifications
and.the
designsubject
topossible
modifica-
tionwithout
notice.
/r
l

2.CONNECTION
DIAGRAM
FM DE.EMPHASIS
SWITCH
Normafly, set this s,witch to "75tts."
Be sure to set it to "25ps." only when
listening to an FM broadcast (pre-
emphasis:25psl with a Dolby* system.
TX-9500[
GROUND
OSCILLOSCOPE
*
The
word
"Dolby" isatrademarkof Dolbv LaboratoriesInc.
TTYPE
FMANTENNA FMOUTDOOR
(ifstations
are
nearby) ANTENNA
AM ANTENNA
(indoor or outdoorl
>t
DISCRETE
4CHANNEL
FM ADAPTOR
!
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rl I
i----
AM FERRITE
BAR
ANTENNA
CONVE]\
OUTLET
coupledv
power sr'\,
t- |
tl
t=J
:NlENr
iT (not
Iwith
witch)
"l
lr
_JTII
power
lf-
lls
tl
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L-
oosoo16;sO
b'ossoifdon
TAPEDECK STEREOAMPLIFIER