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Pioneer SX-1010 Service Manual

Pioneer SX-1010
71 pages
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(ART-
O43-
SERVICE MANUAL
STEREO RECEIVER
ex -1010
KCU,
F, GN
NOTE:
MODEL SX-
I0I0
COMES IN THREE VERSIONS
DISTINGUISHED AS FOLLOWS:
Round label on
Voltage
Type
rear panel
KCU
120V only
UL (U.
) and CSA (Canada) approved.
llOV
, 120V
, 130V
General export model.
220V and 240V
(Switchable)
220V only
SEMCO (Sweden), NEMCO (Norway),
DEMCO (Denmark) approved.
(74BO2M61 D)
C,D
PIONEER~

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Pioneer SX-1010 Specifications

General IconGeneral
Power Output100 watts per channel into 8Ω (stereo)
Tuning RangeFM, MW
Input Sensitivity2.5mV (MM), 150mV (line)
Speaker Load Impedance4Ω to 16Ω
Total Harmonic Distortion0.1%
Signal to Noise Ratio95dB (line)
Output150mV (line)
Semiconductors67 x transistors
Channel Separation55dB (line)

Summary

SPECIFICATIONS

FRONT PANEL FACILITIES

Speaker Controls

Controls for selecting speaker outputs A, B, and C.

Signal and Tuning Indicators

Meters for AM/FM tuning and stereo reception indicator.

Function Selector Buttons

Buttons to select input sources like AM, FM, Phono, AUX.

Tone Controls

Adjustments for bass, treble, and tone defeat.

Audio Features

Muting, Mode selection, and Loudness compensation.

Tape Operation Switches

Switches for tape dubbing and monitoring.

Other Controls and Jacks

Power switch, headphone jacks, and volume control.

Special Function Switches

Switches for Dolby NR and 4-channel adaptors.

CONNECTION DIAGRAM

BLOCK DIAGRAM

CIRCUIT DESCRIPTION

SIGNAL PATH

Describes the flow of audio signals through the unit.

FM and AM Tuner Circuitry

Details the reception and tuning circuits for FM and AM.

Input Selection and Signal Routing

Explains how input signals are selected and routed.

Amplifier Stages and Output

Describes the pre-amplifier, control amplifier, and power amplifier stages.

Speaker Output and Protection Circuits

Covers speaker selection and protective circuitry.

DIAL CORD STRINGING

DISASSEMBLY

PARTS AND P.C. BOARD LOCATIONS

ALIGNMENT PROCEDURE

Aligning the FM Section

Procedures for tuning and calibrating the FM receiver section.

Aligning the FM MPX Section

Steps for aligning the FM stereo multiplex decoder.

Aligning the AM Section

Procedures for tuning and calibrating the AM receiver section.

Aligning the Power Amplifier Section

Calibration steps for the output amplifier stages.

EXPLODED VIEW AND PARTS LIST

Parts List of Exploded View-1

List of components and their part numbers for the first exploded view.

Parts List of Exploded View-2

List of components and their part numbers for the second exploded view.

SCHEMATIC DIAGRAMS P.C. BOARD PATTERNS AND PARTS LIST

CIRCUIT CONNECTION DIAGRAM AND MISCELLANEOUS PARTS

Overall wiring diagram and list of common electronic components.

FM FRONT END (AWB-017-0)

Schematic and parts list for the FM front-end receiver stage.

TUNER ASSEMBLY (AWE-040-0)

Schematic and parts list for the tuner assembly.

MUTING CIRCUIT ASSEMBLY (AWM-039-A)

Schematic and parts list for the muting circuit.

EQUALIZER AMPLIFIER ASSEMBLY (AWF-013-0)

Schematic and parts list for the equalizer amplifier.

CONTROL AMPLIFIER ASSEMBLY (AWG-027-0)

Schematic and parts list for the control amplifier.

POWER AMPLIFIER ASSEMBLY (AWH-032-0)

Schematic and parts list for the power amplifier.

PROTECTION CIRCUIT ASSEMBLY (AWM-062-0)

Schematic and parts list for the protection circuit.

POWER SUPPLY CIRCUIT ASSEMBLY (AWR-053-0)

Schematic and parts list for the power supply circuit.

POWER SUPPLY CIRCUIT ASSEMBLY (AWR-054-A)

Schematic and parts list for an alternative power supply circuit.

SWITCH CIRCUIT ASSEMBLY (AWS-064-0)

Schematic and parts list for the speaker selection switch circuit.

SWITCH CIRCUIT ASSEMBLY (AWS-068-0)

Schematic and parts list for the dimmer/FM mute switch circuit.

SWITCH CIRCUIT ASSEMBLY (AWS-069-0)

Schematic and parts list for the function selection switch circuit.

SWITCH CIRCUIT ASSEMBLY (AWS-070-A)

Schematic and parts list for the mode/loudness switch circuit.

SWITCH CIRCUIT ASSEMBLY (AWS-071-0)

Schematic and parts list for the filter/muting switch circuit.

SWITCH CIRCUIT ASSEMBLY (AWS-072-0)

Schematic and parts list for tape/adaptor switch circuits.

5P CONNECTOR ASSEMBLY (AWX-062-0)

Schematic and parts list for the 5-pin connector assembly.

PACKING METHOD AND PART NUMBERS

SCHEMATIC DIAGRAMS, P.C. BOARD PATTERN AND PARTS LIST FOR 220V ONLY MODEL

CIRCUIT CONNECTION DIAGRAM AND MISCELLANEOUS PARTS

Wiring diagram and component list for the 220V model.

POWER SUPPLY CIRCUIT ASSEMBLY (AWR-063-0)

Schematic and parts list for the 220V power supply circuit.

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