Sharp GF-777 User Manual

GENERAL DISASSEMBLY INSTRUCTIONS
FOR
RE-BELTING & REPAIR
OF
NON-FUNCTIONAL FF & REW
INSTRUCTIONS & PHOTOS
BY
BOBBY JENKINS*
AKA FATDOG
www.stereo2go.com
* - Except where noted
Note: Some of the pictures didn't turn out great, but they should be good enough to get you through
the process.

Sharp GF-777 Specifications

General

Country	Japan
Manufacturer	Sharp
Model	GF-777
Type	Portable Stereo System
Speakers	4 (2 woofers, 2 tweeters)
Power Output	20W (10W per channel)
Tape Decks	2
Radio	AM/FM
Inputs	Microphone
Power Source	AC 110/220V, 50/60Hz or 10 x D batteries
Frequency Range	FM: 88 - 108 MHz, AM: 530 - 1605 kHz
Outputs	Headphones

Summary

SHARP GF-777 Disassembly and Re-Belting Guide

Safety First: Unplug and Remove Batteries

Ensure the boombox is unplugged and batteries are removed before starting any work.

Initial Component Removal

Detach front knobs and covers, then remove the main housing screws.

Boombox Casing Disassembly

Disconnect Internal Wiring

Carefully disconnect antenna wires and the power lead before removing the back panel.

Removing Securing Components

Identify and remove screws, metal bars, and plates holding internal electronics.

Accessing and Removing the Tape Deck Mechanism

Further Disconnections

Disconnect speaker block plugs and remove components on the left side.

Final Casing Disconnections

Disconnect remaining connectors and remove the main bracket housing.

Detaching the Tape Deck Assembly

Remove the final screw, disconnect plugs, and lift out the tape deck assembly.

Tape Deck Servicing and Reassembly

Belt Replacement and Cleaning

Remove old belts, flywheels, and clean idler wheels for maintenance.

Reassembling the Mechanism

Install new belts, reattach the tape deck plate, and carefully reassemble.

Final Adjustments and Performance Checks

Adjust motor speed, play head azimuth, and perform final checks.