Pioneer SA-950 Service Manual

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ARP-494-0
STEREO AMPLIFIER
SA-950
MODEL SA-950 COMES IN SEVEN VERSIONS DISTINGUISHED AS FOLLOWS:
Voltage Remarks
AC220V, 240V (switchable) European continent model
AC 120V only U.S.A. model
AC120V only Canada model
AC110V, 120V, 220V, 240V (switchable) General export model
AC110V, 120V, 220V, 240V (switchable) U.S. Military model
AC240V only Australia model
AC220V, 240V (switchable) West Germany model
e The basic performance of the model SA-950 is the same as the model SA-940. Please refer to the SA-
940/KU service manual (ARP-298-0) with the exception of this service manual.
¢ The model SA-950 differs from the model $A-940 in style (color).
PIONEER ELECTRONIC CORPORATION <--1. Meguro 1-Chome, Meguro-ku, Tokyo 153, Japan
PIONEER ELECTRONICS [USA] INC. P.O. Box 1760, Long Beach, California 30801 U.S.A.
TEL: (B00) 421-1404, [213] 420-5914
PIONEER ELECTRONIC [EUROPE] N.V. Keetberglaan 1, 2740 Beveren, Belgium TEL: 03/775-28:08
PIONEER ELECTRONICS AUSTRALIA PTY. LTD. 178-184 Boundary Road, Braeside, Victoria 3195, Australia
TEL: (O39) 580-9911
YL © JAN. 1984 Printedgn Japan

Pioneer SA-950 Specifications

General

Power Output	80 watts per channel into 8Ω (stereo)
Frequency Response	5Hz to 100kHz
Input Impedance	50kΩ (line)
Dimensions	420 x 150 x 360 mm (W x H x D)
Damping factor	50
Input sensitivity	2.5mV (MM), 150mV (line)
Speaker load impedance	4Ω to 16Ω

Summary

1. SPECIFICATIONS

Amplifier Section

Details the audio performance characteristics of the amplifier, including power output and frequency response.

2. FRONT PANEL FACILITIES

Front Panel Controls and Indicators

Explains the function of each button, knob, switch, and indicator on the front of the unit.

3. PARTS LOCATION

Component Identification and Location

4. EXPLODED VIEWS AND PARTS LIST

Assembly Breakdown and Part Numbers

7. SCHEMATIC DIAGRAM

Circuit Schematics and Component Details

Offers detailed electrical schematics and identifies specific components used in the circuits.

8. ELECTRICAL PARTS LIST

Component Identification and Part Numbers

A comprehensive list of all electrical parts, including their part numbers and descriptions.

10. ADJUSTMENTS

Idle Current Adjustment Procedure

Step-by-step instructions for correctly adjusting the idle current of the amplifier's output stage.

11. SAFETY INFORMATION

Safety Precautions and Notices

Crucial safety warnings, checks, and notices for technicians and users to prevent hazards.