Pioneer sx 8 service manual

Page 1

(U) PIONEEIT

Satirical
Wanna]

REPAIR & ADJUSTMENTS ORDER NO.

ARP-O43-O

COMPUTER CONTROLLED
STEREO RECEIVER

X-B

MODEL SX-8 COMES IN FOUR VERSIONS DISTIGUISHED AS FOLLOWS:

Type Voltage Remarks
KU AC 120V only U.S.A. model

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

S/G AC 110V, 120V, 220V and 240V (Switchable) US. Military model

KC AC 120V only Canada mode!

This service manual is applicable to the KU type. When repairing the S and 8/6 types, please see the
additional service manual (WAS-52).

For the circuit description, please refer to the model SX-9 service manual (ARP-088).

Ce manual dinstruction se refére au mode de réglage, en francais.

Este manual de servicio trata del método de ajuste escrito an espafiol.

CONTENTS

L SPECIFICATIONS ........ , ............ 2 8. PACKING ........................... 30
2. FRONT PANEL FACILITIES .............. 3 9. EXPLODED VIEW ..................... 31
3. PARTS LOCATION .................... 7 10. ADJUSTMENTS ...................... 36
4. BLOCK DIAGRAM .................... 9 REGLAGE .......................... 39
5. P.C.BOARDS CONNECTION DIAGRAM ...... 11 AJUSTE ............................ 42
6. SCHEMATIC DIAGRAM ................. 18 ADDITIONAL SERVICE MANUAL

7. ELECTRICAL PARTS LIST ............... 25 FOR 5 AND 5/6 TYPES -------------------- 45

PIONEER ELECTRONIC CORPORATION 4'1Meguro 1-Chome.Magumkuy Tokyo 153' Japan
us, mom: CTHONIBS CDHPOHATDN 65 Oxford Drwa. MDDnachle. New Jersey 07074, USA.
FIDNIIR ELECTRONIC mundane: N.V. Lumhagen-Havsn 5. 2030 Anzwarp Beigium .

Ham- ucrnnmcu AUSTRALIA wrvu LTD. 1 75-1 34 Boundary Floats. Breanne. tharm 31 55. Auscralie

FH© JAN. 1982 Printed In Japan

Page 2

1 . SPECIFICATIONS

Power Amplifier Section
Continuous Average Power Output is 100 watts*
per channel, min, at 8 ohms from 20 Hertz to
20,000 Hertz with no more than 0.005% total
harmonic distortion.
Total Harmonic Distortion (20 Hertz to 20,000 Hertz, 8
ohms)
continuous rated power output: No more than 0.005%
50 watts per channel power output
...................... No more than 0.005%
Intermodulation Distortion (50 Hertz : 7,000 Hertz = 4:1)
continuous rated power output
...................... No more than 0.005%
50 watts per channel power output
.............. . . . . . . . . No more than 0.005%
Frequency Response . . . 5 Hertz to 450,000 Hertz :3 dB
Input Sensitivity/Impedance (POWER AMP IN)
........................... 1V/50 kilohms
Output: Speaker ................. A. B, A series B
Damping Factor (20 Hertz to 20,000 Hertz, 8 ohms): 50
Hum and Noise (IHF, short-circuited, A network): 115dB

Preamplifier Section

Input (Sensitivity/ Impedance)
PHONO MM ................ 2.5mV/50 kilohms
PHONO MC ................ 0.25mV/100 ohms
AUXNIDEO, TAPE PLAY 1, 2/ADAPTOR IN
........................ 150mV/50 kilohms
Phone Overload Level (T.H.D. 0.009%, 1,000 Hertz)
PHONO MM ....................... 150mV
Output (Level/ Impedance) -
TAPE REC 1,2/ADAPTOR OUT : 150mV/2.2 kilohms
PREAMP OUT (RL : 50 kilohms)

........................ rated 1V/1 kilohms
Frequency Response

PHONO (RlAA Equalization)

.................. 20Hz to 20,000 HertziDBdB

AUX, TAPE PLAY 1, 2/ADAPTOR IN

.................. 5H2 to 100,000 Hertz :3 dB
Tone Control

BASS ....................... i10dB (100Hz)

TREBLE ..................... i10dB(10kHz)
Subsonic Filter .................. 15H: (BdB/oct.)

Loudness Contour (Volume control set at
-40dB position) . . . . +6dB (100Hz), +3dB (10,000Hz)
Hum and Noise (IHF, short-circuited, A network)

PHONO MM/MC ................. 80dB/67dB
Muting ............................. -25dB
FM Tuner Section
Usable Sensitivity (IHF) ...... 10.3dBf (0.9uV, 75 ohms)
50dB Quieting Sensitivity

MONO ............... 15.7dBf (1.6)N, 75 ohms)

STEREO .............. 37dBf (19.5).tV, 75 ohms)
Signal-to Noise Ratio
MONO ....... . ............. 80d8 (at 85dBf)
STEREO .................... 76dB (at 85¢!st
Distortion (at 65dBf)
MONO 100Hz ..................... 0.1%
1kHz ..................... 0.07%
6kHz ..................... 0.15%
STEREO 100Hz .................... 0.15%
1kHz ....._ ................. 0.1%
6kHz ...................... 0.2%
Capture Ratio ......................... 1.0dB
Alternate Channel Selectivity
400kHz ............................ BOdB
Stereo Separation
1kHz .............................. 45dB
30Hz to 15kHz ....................... 35dB
Frequency Response .......... 20Hz to 15kH'zi0.5dB
Spurious Response Ratio .................... SOdB
Image Response Ratio ..................... 80dB
IF Response Ratio ....................... 90dB
AM Suppression Ratio ..................... 55dB
Subcarrier Product Ratio ................... ESdB
SCA Rejection Ratio ...................... 60dB
Muting Threshold ................. 29.30 Bf (BuV)
Antenna Input
.......... 300 ohms balanced, 75 ohms unbalanced
AM Tuner Section
Sensitivity (IHF, Ferrite antenna) .......... 300uV/m
(IHF, Ext. antenna) .............. isuv
Selectivity ............................. 27dB
Signalto-Noise Ratio ...................... 50113
Image Response Ratio ..................... 40dB
IF Response Ratio ....................... 80dB
Antenna ................ Ferrite loopstick antenna
Miscellaneous
Power Requirements .............. AC 120V, 60Hz
Power Consumption ................. 295w (UL)
Dimensions .......... 420(W) x 151 (H) x 448(D) mm
16-9/16(W) x 5-15/16(H) x 17-5/8iD) in
Weight (without package) .......... 15 kg (33 lb 1 oz)
Furnished Parts
Operating instructions ....................... 1
FM T-type antenna ......................... 1
Station Card ................. - ............ 2

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

NOTE:
Specifications and the design subject to possible modifications
without notice due to improvements.