Sharp SA-155H - User Manual

SA-155H/HB/E
SHARP
SERVICE MANUAL /SERVICE-ANLEITUNG/ MANUEL DE SERVICE
$8380SA-155H/
SA-155H
SA-155HB
SA-155E
PHOTO: SA-155H
@ In the interests of user-safety the set should be restored to its original
condition and only parts identical to those specified be used.
e Im Interesse der Benutzer-Sicherheit sollte dieses Geraét wieder auf
seinen urspriinglichen Zustand eingestellt und nur die vorgeschriebe-
nen Teile verwendet werden.
@ Dans |’inérét de la sécurité de !'utilisateur, l'appareil devra étre
reconstitué dans sa condition premiére et seules des piéces identiques
a celles spécifiées, doivent étre utilisées.
© INDEX TO CONTENTS
SPECIFICATIONS
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NOTES
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SCHEMATIC
DIAGRAM..............005
15
VOLTAGE
SELECTOR
ADJUSTMENT
............0.8.
2,3
CABINET
EXPLODED
VIEW
............0...
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16,17
NAMES
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DISASSEMBEY’®
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DIAL CORD STRINGING ........ 0.2.0.0 eee ee eee 6 EQUIVALENT CIRCUIT (BLOCK DIAGRAM) OF IC...... 19
ADJUSTMENT OF TUNER CIRCUIT ............. 7~10 TYPES OF TRANSISTOR AND LED .............6.. 20
SCHEMATIC
DIAGRAM........
2.0.2.0
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11,12
REPLACEMENT
PARTS
LIST.............200-
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26
WIRING SIDE OF P.W. BOARD .............+8- 13, 14
©) INHALTSVERZEICHNIS
TECHNISCHE DATEN......... Cael da (sts On ak ah Zo Saal Sas TSB 2,3 VERDRAHTUNGSSEITE DER LEITERPLATTE....... 13, 14
EINSTELLUNG
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EINSTELLUNG DES TUNER-KREISES ............ 7~10 TRANSISTOREN-UND LEUCHTDIODENTYPEN.......... 20
SCHEMATISCHER SCHALTPLAN...........0..2.008 11,12 ERSATZTEILLISTE ........... 0.000 ee eee 21 ~ 26
®) TABLE DES MATIERES
CARACTERISTIQUES nth ada Sh AE Me ese aoa ed: to ee) aca na eset Seas, GS 2,3 REMARQUES CONCERNANT LE DIAGRAMME
REGLAGE DU SELECTEUR DE TENSION ........... 2,3 SCHEMATIQUE | Stas Sy tae aatalytg. abunee aahaah tel, Ny ore Roa ig SD, ves ab, Mein cad cae, Faget 15
NOMENCLATURE Seis ad Manto ahve aN ep oig: A wee aes Soe) Sere ye 4,5 VUE EN ECLATE DU COFFRET ............... 16, 17
DEMONTAGE .......... 0.2 ce eee een nee e een nee 4,5 CIRCUITS EQUIVALENTS (DIAGRAMME SYNOPTIQUE)
PASSAGE DU FIL DU CADRAN................004 6 PO hy ek) a eh eA a ee Ok RS BOK CORRS 19
REGLAGE DU CIRCUIT DU TUNER.............. 7a10 TYPES DE TRANSISTOR ET REDS: ee 2asci eal ad oc Bad a 20
DIAGRAMME SCHEMATIQUE......... eee ae 11,12 LISTE DES PIECES DE RECHANGE ............. 21426
COTE CABLAGE DE LA PLAQUETTE DE MONTAGE
IMPR IME oo, 5240 occa es ae a A ec Re 13, 14
SHARP
CORPORATION
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Sharp SA-155H Specifications

General

Power output	15 watts per channel into 8Ω (stereo)
Frequency response	20Hz to 20kHz
Signal to noise ratio	70dB (MM), 80dB (line)
Output	150mV (line)
Tuning range	FM: 88-108 MHz
Input sensitivity	2.5mV (MM), 150mV (line)

Summary

Specifications

General Description

General overview of the unit's primary characteristics and power source.

Amplifier Section

Details on the amplifier's output power, frequency response, and input specifications.

Tuner Section

Technical specifications for FM and MW/LW tuning, including frequency coverage and sensitivity.

Voltage Selector Adjustment

Voltage Selector Adjustment (SA-155 H;HB)

Instructions for adjusting the voltage selector on the rear of the unit.

Names of Parts

Front Panel Components

Identifies and lists parts on the front panel of the unit.

Rear Panel and Internal Connectors

Lists parts located on the rear panel and internal connectors.

Disassembly Procedures

Disassembly Cautions

Important safety and handling precautions to follow before and during disassembly.

Cabinet Removal

Step-by-step guide for removing the unit's outer cabinet.

Front Panel Removal

Instructions for safely removing the front panel assembly.

Bottom Plate Removal

Steps for detaching the bottom plate of the unit.

Dial Cord Stringing

Dial Cord Stringing Procedure

Detailed steps for correctly stringing the dial cord for the tuning mechanism.

Tuner Circuit Adjustments

FM IF;RF Adjustment

Procedures for adjusting the FM Intermediate Frequency (IF) and Radio Frequency (RF) circuits.

VCO Frequency Adjustment

Steps for adjusting the Voltage Controlled Oscillator (VCO) frequency for FM reception.

FM Stereo Separation Adjustment

Procedure for optimizing stereo separation in FM reception.

MW;LW IF;RF Adjustment

MW IF;RF Adjustment

Steps for adjusting the Intermediate Frequency (IF) and Radio Frequency (RF) circuits for MW band.

LW IF;RF Adjustment

Steps for adjusting the Intermediate Frequency (IF) and Radio Frequency (RF) circuits for LW band.

Notes on Schematic Diagram

Schematic Diagram Symbols

Explanation of symbols used in schematic diagrams, including capacitor and resistor notations.

Voltage Measurement Conventions

Details on how voltages are measured and indicated in the diagrams.

Model Specification Changes

Notice regarding potential changes to specifications or wiring diagrams without prior notice.

UK Specific Cautions

Wire Holder Replacement Caution

Warning about replacing wire holders to maintain original appearance and safety.

UK Packing Method

Packing Accessories and Case

Details on accessories and packing materials for the UK market.

Switch Position Settings

Standard Switch and Knob Settings

Specifies the default positions for all switches and knobs before operation.

Replacement Parts List

How to Order Replacement Parts

Instructions on how to provide necessary information for prompt and correct order fulfillment.

Important Parts for Safety

Highlights parts critical for maintaining the set's safety and performance, requiring specific replacements.

Resistor Notation

Explains the symbols K and M used to differentiate resistor units and the meaning of "Fusible".