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Pioneer TX-9800 Service Manual

Pioneer TX-9800
34 pages
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AM/FM
STEREO
TUNER
TX=-93800
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Pioneer TX-9800 Specifications

General IconGeneral
Tuning TypeDigital
FM Frequency Range87.5 - 108 MHz
Signal-to-Noise Ratio (AM)50 dB
Capture Ratio (FM)1.5 dB
Output (MW)0.5 V
TypeStereo Tuner
AM Frequency Range530 - 1605 kHz
Total Harmonic Distortion (AM)0.3% (MW)
Selectivity (AM)40 dB
Output Voltage1 V
Output (FM)1.0 V
Frequency Response (FM)30 - 15, 000 Hz

Summary

Specifications

Component Breakdown

Details on semiconductors, FM/AM sections, audio, and miscellaneous specs.

Included Accessories

Lists furnished parts like antenna and operating instructions.

Front Panel Facilities

Controls and Indicators

Explains front panel knobs, switches, meters, and indicators.

Block Diagram

Overall System Diagram

Visual overview of the tuner's functional blocks and signal flow.

APC Circuit Diagram

Detailed block diagram of the Automatic Phase Control circuit.

Circuit Descriptions

Signal Path Circuits

Describes FM front-end, IF amplifiers, and AM tuner circuits.

Control and Logic Circuits

Explains APC, muting, and indicator control circuits.

Disassembly Procedure

Case and Panel Removal

Instructions for disassembling the wooden case, bottom plate, and front panel.

Dial Cord Stringing

Cord Installation Guide

Step-by-step instructions for stringing the dial cord.

Adjustments and Tuning

AM and FM Tuner Calibration

Procedures for adjusting AM and FM tuner sections, including APC and tracking.

Parts Location

Component Views

Identifies parts on front panel, top, and rear views.

Exploded View

Assembly Diagram

Visual representation of unit assembly with labeled parts.

Schematic Diagram

Miscellaneous Parts

PC Board Parts Lists

PC Board Connection Diagram

Packing

Additional Specifications

FM Section and Miscellaneous for S/G Types

Additional specs for FM section and miscellaneous items for S/G types.

Contrast of Miscellaneous Parts

Part Number Variations

Compares part numbers for KU, S, and S/G types.

Supplements for S and S/G Types

Schematic Diagram Differences

Shows schematic variations for S/G types compared to KU type.

Tuner Assembly (GWE-116) Parts

Lists parts for the GWE-116 Tuner Assembly.

LED Assemblies (GWX-252/253)

Details circuitry for LED assemblies 1 and 2.

Switch and Power Supply Assemblies

Details Switch (AWX-113) and Power Supply (AWR-190) assemblies.

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