Sony SA-WMS525 서비스 매뉴얼 - 페이지 2

{카테고리_이름} Sony SA-WMS525에 대한 서비스 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Sony SA-WMS525 12 페이지. Micro satellite system
Sony SA-WMS525에 대해서도 마찬가지입니다: 소유자 기록 (2 페이지), 사용 설명서 (2 페이지), 사용 설명서 (2 페이지), 서비스 매뉴얼 (12 페이지)

Sony SA-WMS525 서비스 매뉴얼
SA-VE522/VE525/WM525/SS-MS525/V521
SAFETY CHECK-OUT
(US model)
After correcting the original service problem, perform the
following safety checks before releasing the set to the customer:
Check the antenna terminals, metal trim, "metallized" knobs, screws,
and all other exposed metal parts for AC leakage. Check leakage as
described below.
LEAKAGE
The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microamperes).
Leakage current can be measured by any one of three methods.
1.
A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers' instructions to use these
instruments.
2.
A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
3.
Measuring the voltage drop across a resistor by means of a
VOM or battery-operated AC voltmeter. The "limit" indication
is 0.75 V, so analog meters must have an accurate low-voltage
scale. The Simpson 250 and Sanwa SH-63Trd are examples of
a passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2V AC range are suitable. (See
Fig. A)
To Exposed Metal
Parts on Set
0.15µF
1.5kΩ
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH
MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS
LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE
COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS
APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY.
2
2-1. Circuit Boards Location ........................................................ 3
2-2. Schematic Diagram ............................................................... 4
2-3. Printed Wiring Board ............................................................ 5
3-1. Front Panel Section ............................................................... 6
3-2. Rear Panel Section ................................................................ 6
3-3. SS-V521 Section, SS-MS525 Section .................................. 7
AC
voltmeter
(0.75V)
LES COMPOSANTS IDENTIFÉS PAR UNE MARQUE 0 SUR LES
DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.

TABLE OF CONTENTS

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ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!