Sharp WQ-780W User Manual

WQ-740W/WQ-780W
CONTENTS
Page
AC POWER SUPPLY CORD AND PLUG ...........................................................................................................................1
SPECIFICATIONS ...............................................................................................................................................................2
VOLTAGE SELECTION .......................................................................................................................................................2
FITTING OF DIAL POINTER ...............................................................................................................................................2
NAMES OF PARTS .............................................................................................................................................................3
DISASSEMBLY....................................................................................................................................................................4
ADJUSTMENT ..................................................................................................................................................................... 5
NOTES ON SCHEMATIC DIAGRAM ..................................................................................................................................6
VOLTAGE ............................................................................................................................................................................7
TYPES OF TRANSISTOR AND LED...................................................................................................................................7
SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD................................................................................................. 8
PARTS GUIDE / EXPLODED VIEW
WQ-740W
WQ-780W
SERVICE MANUAL
SHARP CORPORATION
No. S7862WQ780W//
• 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.
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
WQ-740W
9FF24801830210
AC POWER SUPPLY CORD AND PLUG
9FF24801600292 9FF26802125210
9FF26802125120
WQ-780W
DIFFERENCE BETWEEN
WQ-740W AND WQ-780W
WQ-740W WQ-780W
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Sharp WQ-780W Specifications

General

Country	Japan
Manufacturer	Sharp
Model	WQ-780W
Type	Portable Stereo System
Speakers	2
Tuner	AM/FM
Speaker Configuration	2-way
Inputs	Microphone
Battery	D batteries

Summary

Product Specifications

Disassembly Procedure

Disassembly Precautions

Safety and handling notes before disassembling the unit.

Service Adjustments

Mechanism Section Adjustments

Tape drive mechanism calibration for force and speed.

Tuner Section Adjustments

Deck Section Adjustments

Electrical Data

Circuit Diagrams and Wiring Layouts

Schematic Diagram (1/6)

First part of the main circuit diagram.

Wiring Side of P.W.Board (1/5)

First part of the printed circuit board layout.

Schematic Diagram (6/6)

Last part of the main circuit diagram.

Wiring Side of P.W.Board (5/5)

Last part of the printed circuit board layout.

Parts Ordering and Codes

How to Order Replacement Parts

Comprehensive Component List

Exploded Views of Cabinet Assembly