Sony TA-E1 manual Table Of Contents, Diagrams, Exploded Views, Safety Check-Out, Leakage

SAFETY CHECK-OUT

After correcting the original service problem, perform the follow- ing 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 microampers). Leak- age 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 pas- sive 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

AC

0.15∝F 1.5kΩ voltmeter

(0.75V)

Earth Ground

Fig. A. Using an AC voltmeter to check AC leakage.

SAFETY-RELATED COMPONENT WARNING !!

COMPONENTS IDENTIFIED BY MARK !OR DOTTED LINE WITH MARK !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.

ATTENTION AU COMPOSANT AYANT RAPPORT À LA SÉCURITÉ!!

LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE !SUR

LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.

	TABLE OF CONTENTS
1. GENERAL		3
2. ELECTRICAL ADJUSTMENT		5
3. DIAGRAMS
3-1. Circuit Boards Location		5
3-2. Schematic Diagram – Main Section (1/3) –		6
3-3. Schematic Diagram – Main Section (2/3) –		7
3-4. Schematic Diagram – Main Section (3/3) –		8
3-5. Printed Wiring Board – Main Section –		9
3-6. Schematic Diagram – Power Section –		10
3-7.	Printed Wiring Board – Power Section –	11
4. EXPLODED VIEWS
4-1.	Top Plate and Back Panel Section	12
4-2.	Front Panel Section	12
4-3.	Bottom Plate Section	13
5. ELECTRICAL PARTS LIST		14

MODEL IDENTIFICATION

— BACK PANEL —

Parts No.

PARTS No.	MODEL
4-214-526-1π	US , CND
4-214-526-2π	AEP, UK, E, AUS

• Abbreviation

CND : Canadian model

AUS : Australian model

2