Sharp WF-930Z(BK) User Manual

WF-930Z
SERVICE MANUAL
SHARP CORPORATION
Page
SPECIFICATIONS ...............................................................................................................................................................2
VOLTAGE SELECTION .......................................................................................................................................................2
AC POWER SUPPLY CORD AND PLUG............................................................................................................................2
NAMES OF PARTS..............................................................................................................................................................3
FITTING OF DIAL POINTER ...............................................................................................................................................3
DISASSEMBLY ....................................................................................................................................................................4
REMOVING AND REINSTALLING THE MAIN PARTS .......................................................................................................5
ADJUSTMENT .....................................................................................................................................................................6
SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD .................................................................................................8
NOTES ON SCHEMATIC DIAGRAM.................................................................................................................................12
TYPES OF TRANSISTOR AND LED .................................................................................................................................12
REPLACEMENT PARTS LIST / EXPLODED VIEW
WF-930Z(BK)
CONTENTS
No. S5630WF930Z//
• In the interests of user-safety the set should be restored to its
original condition and only parts identical to those specified
should be used.

Sharp WF-930Z(BK) Specifications

General

Power source	DC 6V (4 x UM-3 (AA) batteries) / AC adapter (AD-6)
Accessories	AC power cord
Frequency range (MW)	530 - 1600kHz
Frequency range (SW2)	9 - 22MHz
Output	Headphone jack

Summary

Sharp Service Manual WF-930Z Overview

WF-930Z Specifications Overview

General Unit Specifications

Power source, consumption, output, input/output terminals, dimensions, and weight.

Radio and Tape Recorder Specifications

Frequency ranges, response, signal/noise, wow/flutter for radio and tape sections.

Speaker Specifications

Details on speaker type, size, input power, and impedance.

Voltage Selection Guide

AC Power Supply Cord and Plug Identification

Names of Parts and Controls

Dial Pointer Fitting Procedure

Unit Disassembly Instructions

Main Unit Disassembly Steps

Detailed steps for removing the front cabinet, main PWB, graphic equalizer, LED PWB, tape mechanism, and power PWB.

Speaker Component Disassembly

Steps for removing the front panel and woofer from the speaker assembly.

Main Parts Removal and Reinstallation

Tape Mechanism Section Removal

Procedures for removing tape mechanism, heads, pinch roller, motor, and belts.

Head Removal and Reinstallation

Steps to remove record/playback, playback, and erase heads with adjustment notes.

Pinch Roller, Motor, and Belt Procedures

Guide for removing/reinstalling pinch roller, motor, and belts.

Adjustment Procedures and Points

Mechanism and Tuner Section Adjustments

Adjustments for tape mechanism, torque, speed, azimuth, and tuner sections.

Tape Section and Amplifier Adjustments

Tape section controls, bias oscillation, and playback amplifier sensitivity checks.

Notes on Schematic Diagram Interpretation

Transistor and LED Type Identification

Sharp Parts Guide and Ordering Information

Capacitor and Resistor Parts Code Explanation

Details on how to interpret part codes for capacitors and resistors.

Component Parts List: ICs, Transistors, Diodes, Filters, Transformers, Coils, Capacitors

Integrated Circuits, Transistors, and Diodes

Part numbers and descriptions for ICs, transistors, and diodes.

Filters, Transformers, Coils, and Capacitors

Part numbers and descriptions for filters, transformers, coils, and capacitors.

Component Parts List: Resistors, Other Circuitry, Mechanical, Cabinet, Accessories

Resistors and Other Circuitry Parts

Part numbers and descriptions for resistors and miscellaneous circuitry components.

Mechanical, Cabinet, and Accessories Parts

Part numbers for mechanical, cabinet, and accessory items.

Component Parts List: Accessories, Packing, and PWB Assemblies

Accessories, Packing, and PWB Assemblies

Part numbers for accessories, packing materials, and main PWB assemblies.

Mechanism Exploded View Diagram

Cabinet Exploded View Diagram

Speaker Exploded View Diagram