Sharp GF-4949ZS - User Manual

SHARP SERVICE MANUAL
S03C4G F4949ZG
PHOTO: G F-4949ZG
GENERAL
Power source :
Speakers:
Output power:
Semiconductors:
Dimensions: Width;
Height;
Depth;
Weight:
GF-4949ZG
GF-4949ZS
In the interests of user-safety the set should be
restored to its original condition and only parts
identical to those specified be used.
For the mechanical adjustment, refer to the
620X Service Manual (ATSM281022TRC) already
issued.
SPECIFICATIONS
(AC operation)
RMS; 6W (3W + 3W) (DC opera-
AC 1 IOV-127V and 22OV-24OV,
tion, 10% distortion)
5 ICS
4 Transistors
50/60Hz
11 Diodes
2 LEDs
445mm (17-l/2”)
233.5mm (9-3/l 6”)
DC 9V (UM/SUM-1 or R20 type x 6)
98mm (3-7/8”)
3.1 kg (6.8 tbs.) without batteries
12cm (4-3/4”) woofer x 2
Ceramic type tweeter x 2
PMPO; 16W (BW + 8W)
(AC operation)
MPO; 12W (6W + 6W)
TAPE RECORDER
Tape :
Compact cassette tape
Frequency response:
50Hz - 10,OOOHz
Signal/noise ratio:
45dB
Input sensitivity and impedance:
External mic.;
600 ohms
Loaded impedance:
Headphones;
8 ohms - 25 ohms
RADIO
Frequency range:
FM; 87.6 MHz - 108 MHz
AM; 526.5 - 1605.5 kHz
SW1 ; 2.3 MHz - 7.3 MHz
SW2 ; 7.3 MHz - 22.0 MHz
Specifications for this model are subject to change without
prior notice.

Sharp GF-4949ZS Specifications

General

Brand	Sharp
Model	GF-4949ZS
Category	MP3 Player
Language	English

Summary

Specifications Overview

Voltage Selection

AC Power Input Voltage Adjustment

Instructions for setting the unit to the correct mains voltage.

Disassembly Procedures

Front Cabinet Removal

Steps to detach the front cabinet.

Mechanism Block Removal

Steps to remove the tape mechanism.

P.W.B. Removal

Instructions for removing main and power boards.

System Block Diagram

Functional Block Overview

Mechanical Adjustments

Head Azimuth Adjustment

How to align the record/playback head for optimal signal.

Alignment Procedures

General Alignment Instructions

Basic steps and tools for performing alignment.

AM IF;RF Alignment Procedure

Steps for aligning AM intermediate and radio frequency stages.

Radio Alignment Procedures

FM IF;RF Alignment

Steps for aligning FM intermediate and radio frequency stages.

VCO Frequency Alignment

Wiring Diagram - Main P.W.B.

Main P.W.B. Wiring Connections

Wiring Diagram - Other P.W.Bs

Jack, Power, and Switch P.W.B. Wiring

Schematic Diagram

Detailed Circuit Schematics

Schematic Diagram (Continued)

Circuit Schematics and Component Details

Replacement Parts List