Sharp GF-A2Z(S) User Manual

mmM
SHARI= SERVICE MANUAL
,
S5452G F-A2ZSl
GF-A2Z(S)
GF-A2Z(G)
In the interests of usersafety the set should be restored to its
original condition and only parts identical to those specified be
used.
Photo: G F-APZ(S)
/-INDEX TO CONTENTS
--.
Page
SPECIFICATIONS
...............................................
1
NAMESOFPARTS
..............................................
2
VOLTAGE SELECTION
...........................................
2
STRINGING OF DIAL CORD
.......................................
2
DISASSEMBLY
.................................................
3
BLOCKDIAGRAM
..............................................
4
TEST TAPES FOR MEASUREMENT
..................................
5
MECHANICAL ADJUSTMENT
......................................
5
CIRCUITADJUSTMENT
........................................
5-7
ACPOWERSUPPLYCORD
.........................................
7
NOTES ON SCHEMATIC DIAGRAM
..................................
8
WlRlNGSlDEOFP.W.BOARD
...................................
.9,10
SCHEMATIC DIAGRAM
........................................
II,12
EXPLODEDVIEW..
..........................................
13,14
REPLACEMENT PARTS LIST
....................................
15-18
SPECIFICATIONS
GENERAL
Power source:
Output power:
Semiconductors:
Dimensions:
AC 110 - 127V and 220 - 240V
DC 9 V (UM/SUM-1 or R20 type x 6)
PMPO; 15 W
(7.5 w + 7.5 W)
(AC operation)
MPO; 8 W
(4w+4w)
(AC operation)
RMS; 4.6 W
(2.3 W + 2.3 W)
(DC operation
10 % distortion)
8 ICs
3 Transistors
13 Diodes
6 LEDs
Width; 550 mm (21-5/8”)
Height; 220 mm (8-5/8”)
TAPE RECORDER
Tape:
Frequency range:
Signal/noise ratio:
Wow and flutter:
Input impedance:
Loaded impedance:
Headphones;
External speakers;
RADIO
Frequency range:
SPEAKER
Speakers:
Impedance:
Compact cassette tape
80 Hz - 10,000 Hz
36 dB
0.15 % (WRMS)
External mic: 600 ohms
8 - 25 ohms
3.2 - 8 ohms
FM; 87.6 MHz - 108 MHz
AM; 526.5 kHz - 1606.5 kHz
SW1 ; 2.3 MHz - 7.3 MHz
SW,; 7.3 MHz - 22 MHz
12 cm (4-3/4”) woofer x 2
Horn type tweeter x 2
3.2 ohms
Weight:
Depth; 130 mm (5-I /8”)
3.6 kg (7.9 Ibs.) without batteries
Specifications for this model are subject to change without
prior notice.
SHARP CORPORATION

Sharp GF-A2Z(S) Specifications

General

Type	Stereo System
Model	GF-A2Z(S)
Brand	Sharp
Speakers	2
FM Radio	Yes
Wave bands	FM
Tuning range	FM: 87.5-108 MHz

Summary

System Specifications

General Performance Data

Overall power, dimensions, weight, and semiconductor details.

Tape Recorder Performance

Tape type, frequency range, S/N, wow/flutter, impedance.

Radio Tuner Bands

FM, AM, SW frequency ranges.

Audio Output Specifications

Speaker type and impedance.

Names of Parts and Operation Setup

External Component Identification

Labeled diagram of all external parts and controls.

Voltage Selection Procedure

Instructions for setting the correct voltage for mains operation.

Dial Cord Stringing Guide

Step-by-step guide for threading the dial cord mechanism.

Disassembly Procedures

Disassembly Safety Precautions

Safety and handling notes before disassembling the unit.

Step-by-Step Disassembly Guide

Detailed instructions for taking apart the unit by section.

Tuner Section Circuit Adjustment

AM IF/RF Adjustment

Steps for adjusting AM Intermediate Frequency and Radio Frequency circuits.

Mechanical and Audio Adjustments

Mechanical Adjustment Procedures

Pinch roller, tape tension, torque, azimuth, and speed adjustments.

Audio Circuit Adjustment

Playback amplifier sensitivity calibration using test tapes.

Block Diagram

System Architecture Overview

Diagram showing the main functional blocks and their interconnections.

FM Circuit Adjustments and Power Cords

FM IF/RF and VCO Frequency Calibration

Steps for adjusting FM IF/RF and VCO frequency.

AC Power Supply Cord Identification

Images and part numbers for AC power supply cords.

Schematic Diagram Interpretation

Resistor and Capacitor Notation

Explains resistor (K) and capacitor (P) notation on diagrams.

Voltage Measurement Conventions

Explains how voltage readings are indicated and their context.

Safety Critical Part Identification

Notes on parts marked for safety and their importance.

Integrated Circuit Details

IC Pinout and Identification Diagrams

Visual representations of ICs with pin assignments and orientations.

Wiring Diagrams

Main Internal Wiring Layout

Diagram showing internal wiring of main components and boards.

Printed Wiring Board Layouts

Main P.W.Board Wiring Details

Detailed wiring layout of the main printed wiring board.

Power Supply P.W.Board Wiring

Wiring layout for the power supply printed wiring board.

Exploded View - Mechanism

Mechanical Component Breakdown

Diagram showing all mechanical parts disassembled and numbered.

Exploded View - Cabinet

Cabinet Component Breakdown

Diagram showing all cabinet parts disassembled and numbered.

Replacement Parts List - Core Components

Integrated Circuits and Transistors

List of ICs and transistors with part numbers and codes.

Diodes, Coils, and Transformers

List of diodes, coils, and transformers with part numbers and codes.

Filters, Controls, and Capacitors

List of filters, controls, and electrolytic capacitors with part numbers.

Replacement Parts List - Capacitors

Capacitor Component Details

Comprehensive list of various types of capacitors with part numbers.

Replacement Parts List - Resistors

Resistor Component Details

List of resistors with part numbers and values.

Replacement Parts List - Miscellaneous

Resistors and Circuit Parts

List of resistors, plugs, jacks, switches, and motors.

Mechanical Parts and Gears

List of mechanical parts like buttons, levers, springs, and gears.

Replacement Parts List - Cabinet and Accessories

Cabinet and Housing Components

List of cabinet components like front panels, frames, and covers.

Accessories and Packing Materials

List of included accessories and packing materials.