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Pioneer sx-550 Service Manual

Pioneer sx-550
57 pages
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Pioneer sx-550 Specifications

General IconGeneral
Total Harmonic Distortion0.5%
Tuning rangeFM, MW
Damping factor30
Input Sensitivity2.5 mV (MM), 150 mV (line)
Output150 mV (line)
Power Output20 watts per channel (8 ohms)
Frequency Response20Hz to 20kHz
Signal to Noise Ratio90dB (line)
Weight9.8 kg
Speaker load impedance4 ohms to 16 ohms
Semiconductors3 x IC
Channel Separation45dB

Summary

SPECIFICATIONS

CONNECTION DIAGRAM

FRONT PANEL FACILITIES

CIRCUIT DESCRIPTIONS

BLOCK DIAGRAM

LEVEL DIAGRAM

DISASSEMBLY

DIAL CORD STRINGING

ADJUSTING PROCEDURES

9.1 AM Section

Procedure for adjusting the AM tuner section.

9.2 FM Section

Procedure for adjusting the FM tuner section.

9.3 MPX Section

Procedure for adjusting the MPX (Multiplex) decoder section.

9.4 Power Amplifier (Idle Current)

Procedure for adjusting the power amplifier's idle current.

PARTS LOCATION

10.1 Front Panel View

Identifies components and controls on the front panel.

10.2 Rear Panel View

Identifies components and connectors on the rear panel.

10.3 Top View

Shows the internal layout and components from the top.

10.4 Front View

Illustrates the front view with labeled components.

EXPLODED VIEWS

11.1 Exterior

Exploded view of the receiver's exterior parts.

11.2 Part 1

Exploded view of internal components, Part 1.

11.3 Part 2 AF Assembly (AWK-056)

Exploded view of the AF amplifier assembly (AWK-056).

11.4 Part 3 RF Assembly (AWE-072)

Exploded view of the RF amplifier assembly (AWE-072).

NOMENCLATURE OF SCREWS, WASHERS AND NUTS

SCHEMATIC DIAGRAMS, P.C. BOARD PATTERNS AND PARTS LISTS

12.1 Miscellaneous Parts List

List of miscellaneous parts used in the receiver.

12.2 Schematic Diagram

Overall schematic diagram of the SX-550 receiver.

12.3 RF Assembly (AWE-072-0)

Parts list for the RF assembly (AWE-072-0).

12.4 AF Amplifier Assembly (AWK-056)

Parts list for the AF amplifier assembly (AWK-056).

12.5 AF Muting Assembly (AWM-101)

Parts list for the AF muting assembly (AWM-101).

PACKING

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