Sharp GF-7500H User Manual

SHARP
SERVICE MANUAL /SERVICE-ANLEITUNG/ MANUEL DE SERVICE
Assto Program Search System
| Caution!
Under the employment of latest technologies this set uses
leadless parts. Consult pages 22 and 23 without fail before
replacing them.
Achtung!
' Unter Verwendung neuester Technologie finden in
| diesem Gerat zuleitungslose Bauelemente Verwendung.
Vor Austausch unbedingt Anleitung auf Seiten 24 und 25
beachten.
Précaution!
Par l'emploi des derniéres technologies, cet appareil
utilise des piéces sans fil. Ne pas oublier de consulter pages
26 et 27 avant de les remplacer.
——
ATSM782100RCS
GF -7500H
GF -7500E
* In the interests of user-safety the set should be restored to its 1
original condition and only parts identical to those specified be
used.
- Im Interesse der Benutzer-Sicherheit sollte dieses Gerat wieder
auf seinen urspriinglichen Zustand eingestelit und nur die
vorgeschriebenen Teile verwendet werden.
- Dans l’intérét de la sécurité de l'utilisateur, l'appareil devra étre
reconstitué dans sa condition premiére et seules des piéces identi-
ques a celles spécifiées, doivent étre utilisées. |
Note for users in UK:
Recording
and
playback
of
any
material
may
require
consent
which
SHARP
are
unable
to
give.
Please
refer
particularly
to
the
provisions
of
Copyright
Act
1956,
the
Dramatic
and
Musical
Performers
Protection
Act
1958,
the
Performers
Protection
Acts
1963
and
1972
and
to
any
subsequent
statutory
enactments
and
{_
orders.
INDEX TO CONTENTS
SPECIFICATIONS, NAMES OF PARTS........... 2~4 WIRING SIDE OF P.W.BOARD ............ 17, 18, 21
DISASSEMBLY, VOLTAGE SELECTION.......... 5,6 SCHEMATIC DIAGRAM.......... 0.00000 19, 20
DIAL CORD STRINGING ...............200005. 7 INFORMATION OF LEADLESS TYPE RESISTORS,
BLOCK DIAGRAM ...... 0.0... cece eee ees 8 CAPACITORS & JUMPERS ...............0.. 22, 23
MECHANICAL ADJUSTMENT, ELECTRICAL CABINET EXPLODED VIEW................0.4. 28
ADJUSTMENT... 2... eee 9, 10 MECHANISM EXPLODED VIEW................. 29
GENERAL ALIGNMENT INSTRUCTION........ 11~14 REPLACEMENT PARTS LIST ............... 30~35
PACKING METHOD (GF-7500E Only)............. 15
CD>
INHALTSVERZEICHNIS
TECHNISCHE DATEN, TEILEBEZEICHNUNG...... 2~4 SCHEMATISCHER SCHALTPLAN............. 19, 20
ZERLEGEN, SPANNUNGSWAHL ............... 5,6 INFORMATION DER STIFTLOSEN WIDERSTANDE,
SKALENSCHNURSPANNUNG...............-.... 7 KONDENSATOREN UND
BLOCKSCHALTBILD.......................00. 8 UBERBRUCKUNGSDRAHTE..............004 24, 25
MECHANISCHE EINSTELLUNGEN, EXPLOSIONSDARSTELLUNG DES GEHAUSES...... 28
ELEKTRISCHE EINSTELLUNGEN ............. 9,10 EXPLOSIONSDARSTELLUNG DES LAUFWERKS ... .29
ALLGEMEINE ABGLEICHANLEITUNG........ 11~ 14 ERSATZTEILLISTE..... 2.2.0.0... 0.00000. 30~35
VERDRAHTUNGSSEITE DER
LELTERPLATTE: cision ne ae eee Bees 17, 18, 21
CFD TABLE DES MATIERES
CARACTERISTIQUES, NOMENCLATURE........ 2a4 DIAGRAMME SCHEMATIQUE............... 19, 20
DEMONTAGE, SELECTION DE LA TENSION ..... 5,6 INFORMATION DES RESISTANCES,
PASSAGE DU FIL DU CADRAN................. 7 CONDENSATEURS ET FILS VOLANTS
DIAGRAMME SYNOPTIQUE ...................0. 8 SANS “PIED? 20a iiss gates Kareena tne say 26, 27
REGLAGE MECANIQUE, REGLAGE ELECTRIQUE. 9, 10 VUE EN ECLATE DU COFFRET................ 28
INSTRUCTIONS GENERALES POUR VUE EN ECLATE DU MECHANISME ............ 29
L’ALIGNEMENT ............0..0 00000008 11414 LISTE DES PIECES DE RECHANGE......... 30 a 35
COTE CABLAGE DE LA PMI............. 17,18, 21
SHARP CORPORATION osaka, JAPAN
GF-7500H
GF-7500E

Sharp GF-7500H Specifications

General

Type	Boombox
Brand	Sharp
Model	GF-7500H
Country	Japan
Year	1981
Power Source	AC/DC
Features	Radio
Frequency Response	40Hz - 16kHz
Inputs	Mic
Outputs	Headphones
Speakers	2-way system: 16cm woofer, 5cm tweeter

Summary

SPECIFICATIONS

NAMES OF PARTS

Lists and identifies all external controls and components of the stereo system.

DISASSEMBLY

VOLTAGE SELECTION

Procedure for adjusting the unit's voltage setting to match local power supply.

DIAL CORD STRINGING

MECHANICAL ADJUSTMENT

TORQUE CHECK AT PLAY, FAST FORWARD AND REWIND MODES

Verifies tape transport torque in playback, FF, and rewind modes.

PINCH ROLLER PRESSURE CHECK

Checks the pressure of the pinch roller against the capstan for optimal tape contact.

TAPE SPEED ADJUSTMENT

Adjusts the tape speed to ensure accurate playback and recording.

RECORD/PLAYBACK HEAD AZIMUTH ADJUSTMENT

Aligns the tape head azimuth for optimal sound quality and phase.

ELECTRICAL ADJUSTMENT

BIAS OSCILLATOR FREQUENCY CHECK

Checks and adjusts the bias oscillator frequency critical for tape recording.

PLAYBACK AMPLIFIER SENSITIVITY CHECK

Verifies the playback amplifier's sensitivity for proper audio output levels.

GENERAL ALIGNMENT INSTRUCTION

AM IF/RF ALIGNMENT

Steps to align the AM radio's intermediate frequency and radio frequency stages.

FM STEREO ALIGNEMNT

Procedure for aligning the FM receiver for optimal stereo reception.

PACKING METHOD (GF-7500E Only)

REPLACEMENT PARTS LIST

INTEGRATED CIRCUITS

Lists all integrated circuit components with their corresponding part numbers and codes.

TRANSISTORS

Lists all transistor components with their corresponding part numbers and codes.

DIODES

Lists all diode components with their corresponding part numbers and codes.

COILS

Lists all coil components used in the unit with their respective part numbers.

TRANSFORMERS

Lists all transformer components used in the unit with their respective part numbers.

FILTERS

Lists all filter components used in the unit with their respective part numbers.

CONTROLS

Lists all user controls and their corresponding part numbers.

ELECTROLYTIC CAPACITORS

Lists all electrolytic capacitor components with their part numbers and specifications.

CAPACITORS

Lists all non-electrolytic capacitor components with their part numbers and specifications.

RESISTORS

Lists all resistor components with their part numbers and specifications.

CABINET EXPLODED VIEW

MECHANISM EXPLODED VIEW