Pioneer a 9 service manual

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ORDER l'
ART-590

NON SWITCHING AMP
STEREO AMPLIFIER

A-S

MODEL A-9 COMES lN SIX VERSIONS DISTINGUISHED AS FOLLOWS:

Type Voltage Remarks

KU 120V only U.S.A. model

S 110V, 120V, 220V and 240V (Switchable) General export model

S/Gi IIOVV, 120V, 220V and 240V (Switchablealifl U.S.7Mi|itary model 7 T

HE 220V and 240V (Switchable) Europe model

HB W 220V and 240V lSKtchalale) 7 7 VT 7 7 7 United Kingdom model

KC 120V only Canada model 7 i i

o This service manual is applicable to the HE and HB types.
0 Ce manuel dinstruction se refére au mode de réglage, en francais.
o Este manual de servicio trata del método de ajuste escrito en espafiol.

CONTENTS

1. SPECIFICATIONS ...................... 2
2. FRONT PANEL FACILITIES ............... 3
3. BLOCK DIAGRAM ..................... 6
4. CIRCUIT DESCRIPTIONS ................. 7
5. PARTS LOCATION .................... 10
6. PACKING ........................... 12
7. P.C. BOARDS CONNECTION DIAGRAM ...... 13
8. EXPLODED VIEW ..................... 21
9. SCHEMATIC DIAGRAM ................. 25
10. ELECTRICAL PARTS LIST ............... 29
11. ADJUSTMENTS ....................... 34
REGLAGE ........................... 35
AJUSTE ............................ 36
PIONEER ELECTHONIC CORPORATION 471. Mew-n w Churne. Meguvowm, Tokya 45? daparv

LLE. FIDNEER ELECTRONICS ccnPDnATIcIN 85 Oxford Drrve, Mmsnacme. New .Jescy 07074. LSA
PIONEER ELECTRONIC IEunoFEI N.v. LdlzhagemI-lavm El. 203:? Annwep. Bcglurn
PIONEEH ELECTRONICS AUSTRALIA FTV. LTD. 178484 ammdany Road, Bvaesua Vlamvma 3195. Ausrraua

Y H U DI,C. I980 Printed In lawn

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a

11- AJUECIFICATIONS

Amplificador
o Girar 00114191 Section

VR4 (der .
. Sin ninguous Power Output Is 110 watts" per

interruplel, min., at 8 ohms from 20 Hertz to 20,000
posiciér. with no more than 0.003% total harmonic
_ortion.

P'_m:1tinu0us Power Output at 1 kHz (both channels driven)
all'T.H.D, 0.003%, Sohms ................. 120 watts per channel

Total Harmonic Distortion (20 Hertz to 20,000 Hertz, 8 ohms,

VF from TUNER)

continuous rated power output ....... No more than 0.003%
55 watts per channel power output .. No more than 0.003%
Intermodulation Distortion (50 Hertz:7,000 Hertz=4:1,
8 ohms, from TUNER)
continuous rated power output ....... No more than 0.005%
55 watts per channel power output .. No more than 0.003%
Damping Factor (20 Hertz to 20,000 Hertz, 8 ohms)

............................................................. 60
Input Sensutivity/impedance
PHONO MM ................................... 2.5 mV/SO kilohms
cartridge load capacitance:
PHONOMM ...100,200,300,400pF
PHONO MC .............. 0.1 mV/100 ohms

cartridge load resistance:
PHONO MC ................................... 33,100 ohms
TUNER, AUX, TAPE PLAY 1,2 .. .. 150 mV/50 kiiohms
Phono Overload Level (T.H.D. 0.0015 %, 1,000 Hz)

PHONO MM
PHONO MC
Output Level/Impedance
TAPE REC 1, 2 ............................... 150 mV/50 kilohms
Speaker ................................ A/OFF, B/OFF (4N16S2)

Frequency Response
PHONO (RIAA Equalization) ..... 20 H2 to 20,000 H2102 dB
TUNER, AUX, TAPE PLAY 1, 2 ..... 5 Hz to 200,000 H113 dB
Tone Control ,
BASS .. +10dBl-10dBt100Hz,50Hzl
Turnover Frequency: 400 Hz/200 Hz
TREBLE ...................... +10dBl-10dB (10 kHz, 20kHz)

Turnover Frequency: 2.5 kHz/5 kHz

Filter
LOWlSUBSONIC) .. ...................... 20 Hz(12dB/oct.)
Loudness Contour (Volume control set at -40 dB position)
.................................... + 6 dB (100 Hz), +3 dB (10 kHz)
Hum and Noise (IHF, short circuited A network)

PHONO MM ..

PHONO MC ..74dB

TUNER,AUX, TAPE PLAY1,2 .......................... 110dB
Hum and Noise (DIN, continuous rated power output/50 mW)

PHONO MM ................... 80dB/68dB

PHONO MC ...75dB/70dB

TUNER, AUX, TAPE PLAY 1,2 .95 dB/70 dB
Muting .................................. .. -20 dB

Miscellaneous
Power Requirements
HE, HB models ............. 220/240 V (switchable), 50/60 Hz
S, SlG models . 110/120/220/240V (switchable), 50/60 Hz
Power Consumption

HE, HB models ....... 820W(max.)
S, S/G models. ....... 300W (max.l
Dimensions ....... 420(Wlx 150 (H)x430(D) mm

16-9/16 (W) x 5-15/16 (H) x 16-15/16 (D) in
Weight (without package) ....................... 16 kg (35 lo4oz)
Furnished Parts

Operating Instructions .......
Fuse (8, S/G models only) ..

. 1 (HE model only; 2)
......... 1(10Aor5A)

Measured pursuant to the Federal Trade Commissions Trade
Regulation rule on Power Output Claims for Amplifiers.

NOTE:
Specifications and the design sub/act to possible modifications
without notice due to improvements.