Pioneer sg 90 service manual

Page 1

Sefiice

Wanna]

CIRCUIT DESCRIPTIONS

REPAIR & ADJUSTMENTS ORDER NO.

ARP-342-0

GRAPHIC EQUALIZER

SG-QD

MODEL SG-90 COMES IN SEVEN VERSIONS DISTINGUISHED AS FOLLOWS:

Type Voltage Remarks
KU AC 120V only U. S, A. model
KC AC 120V only Canada model
HEM AC 220v, 240V (switchable) European continent model
HB AC 220V, 240V (switchable) United Kingdom model
5 AC 110V, 120V, 220V, 240V (switchable) General export model
SIG AC 110V, 120V, 220V, 240V (switchable) U. S. Military model
YP AC 240V only Australia model

O This service manual is applicable to the KU type.
For servicing of the S and SIG types, please refer to P30. For other types, please refer to the Additional
Service Manual.

0 Ce manuel d'lnstruction 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 9. ELECTRICAL PARTS LIST .............. 26
2. FRONT PANEL FACILITIES ............. 3 10. PACKING ........................... 29
3. BLOCK DIAGRAM .................... 5 11. FOR S AND S/G TYPES ............... 30
4. CIRCUIT DESCRIPTIONS ............... 7 12. ADJUSTMENTS ...................... 31
5. PARTS LOCATION .................... 12 REGLAGE .......................... 32
6. EXPLODED VIEWS AND PARTS LIST ..... 14 AJUSTE ............................ 33
7. P. C. BOARDS CONNECTION DIAGRAM . . . . 17 13. SAFETY INFORMATION ............... 34
8. SCHEMATIC DIAGRAM ................ 21

PIONEER ELECTRONIC CORPORATION 4- 1. Meguro 1 Chome. Meguro~ku Tokyo 153. Japan
PIONEER ELECTRONICS [USA] INC.1SE5 E Dominguez 812.. Long Beach. California 80810 USA.

BIONEER ELECTRONIC [EUROFE] N. v. Keenbefglaan 1 2740 Eeveren Belgium

PIONEER ELECTRONICS AUSTRALIA nrv. LTD. 178 184 Bouhdary Road. Braesxde VlCCOrle 3195. Australia

FX© lUN. I983 Primed In lapan

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1. SPECIFICATIONS

Graphic Equalizer Section

Equalizer Frequency 16, 25, 40, 63, 100, 160, 250, 400, 6301 k,
1.6 k, 2.5K, 4 k, 6.3 k, 10 k, 16 k, 25k

Equalizer level ................................ 112613, 1 6dB

Total Harmonic DistortionH .

.. 0.001% (20 Hz N 20 kHz,
1 V, Equalizer Flat)

Input Impedance

INPUT, TAPE 1 PLAY, TAPE 2 PLAY ................... 47 k9
Output lnpedance

OUTPUT .........................

TAPE 1 REC, TAPEZ REC .
Frequency Response ....... 10 ~ 100 kHz :9 dB (Equalizer Flat)

Hum and Noise (lHFA Network, short curcuit, 2 V output)

120 dB (Equalizer Flat)
Hum and Noise (DIN) .. 96 dB (Equalizer Flat)
Gain ........................ 0 dB (Equalizer Flat, Input Level 0 dB)

Auto Fader Section

Fadeintime
Fade out time .

MHARMONIC DISTORTION (BY AUTOMATIC DISTOR-
TION ANALYZER)

MISCELLANEOUS

Power Requirements

KU, KC models AC 100 Volts, 50/60 Hz

S, S/G models
~ AC110V/120V/220V/240Vlswitchablel, 50/60 Hz

Power Consumption

KU, KC models .. ....40Watts(max.)
S, 3/6 models . ..... 34Watts (max)
Dimensions ......................... 420(W) x 131 (H) x 351(D) mm

16-9/19(W) x 5-3/16(H) x 13-13/16(D) in.

Weight ...7.2kg(15|b14oz)

ACCESSORIES

Pin-plug connecting cords
Operating Instructions .....

NOTE:
Specifications and design sub/act to possible modification without
notice, due to improvements.