Pioneer SX-626 KCW User Manual

<ART-027-0>
SERVICH MANUAL
AM /FM STEREO RECEIVER
SX-626
KCW, KUW, FVZW, NBW, FW
NOTE:
MODEL SX-626 COMES IN FIVE VERSIONS DISTINGUISHED AS FOLLOWS:
Round label on
rear panel
120V only CSA approved (Canada)
KUW 120V only UL approved (U.S.A.)
FVZW
5-position
selector
FTZ
approved
(West
Germany)
NBW 220V only SEMCO (Sweden), NEMCO
(Norway) and DEMCO (Denmark)
approved
FW 5-position selector General export model
| with de-emphasis selector switch
—
owe
WQPIONEER

Pioneer SX-626 KCW Specifications

General

Tuning Range	FM, MW
Power Output	27 watts per channel into 8Ω (stereo)
Frequency Response	20Hz to 20kHz
Signal to Noise Ratio	70 dB (MM)
Speaker Load Impedance	4Ω to 16Ω
Dimensions	432 x 140 x 347mm
Semiconductors	Transistors: 48, Diodes: 28, ICs: 2

Summary

1. Specifications

2. Front Panel Facilities

Front Panel Controls

Details on Bass, Treble, Volume, Loudness, Filter, Muting, Tape Monitor, and Selector controls.

Front Panel Indicators and Meters

Explanation of Signal Meter and Stereo Indicator functionality.

Front Panel Connections

Information on Speaker, Phone, Mic jacks, and Tuning Knob usage.

3. Connection Diagram

4. Block Diagram

5. Disassembly

6. Parts and P.C. Board Location

Top View Component Layout

Diagram showing component placement on the top side of the unit.

Bottom View Component Layout

Diagram showing component placement on the bottom side of the unit.

7. Alignment Procedure

Required Measuring Instruments

List of necessary test equipment for performing unit alignment.

AM Adjustment

Step-by-step guide for adjusting AM reception and tracking.

FM Adjustment

Step-by-step guide for adjusting FM reception, tracking, and MPX.

8. Dial Cord Stringing

9. Packing Method and Part Numbers

10. Exploded View and Parts List

Main Parts List Overview

List of components from the exploded view with part numbers.

Detailed Parts List

Continuation of the component list with part numbers and model applicability.

Comprehensive Parts List

Further listing of components, including part numbers and model variations.

Exploded View Diagram

Visual representation of unit assembly with numbered parts for identification.

11. Schematics, PC Board Patterns, and Parts Lists

11.1 Circuit Connection Diagram and Miscellaneous Parts

Overall circuit diagram showing system interconnections and miscellaneous parts.

11.2 Tuner Assembly (AWE-031-0)

Schematics and parts list for the Tuner Assembly.

11.3 Equalizer Amplifier Assembly (W21-004-B)

Schematics and parts list for the Equalizer Amplifier Assembly.

11.4 Control Amplifier Assembly (AWG-008-A)

Schematics and parts list for the Control Amplifier Assembly.

11.5 Power Amplifier Assembly (AWH-002-E)

Schematics and parts list for the Power Amplifier Assembly.

11.6 Power Supply Circuit Assembly (AWR-029-A)

Schematics and parts list for the Power Supply Circuit Assembly.

11.7 Switch Circuit Assembly (AWS-013-A)

Schematic and parts list for the Switch Circuit Assembly.

11.8 Switch Circuit Assembly (AWS-014-0)

Schematic and parts list for the second Switch Circuit Assembly.

11.9 CR & Meter Drive Assembly (AWM-050-0)

Schematic and parts list for the CR & Meter Drive Assembly.