Sony FDL-PT222 service manual

FDL-PT222

SPECIFICATIONS		TABLE OF CONTENTS
Section			Title	Page
1.	GENERAL
	Power Sources (see fig. A)			3
	Operation (see fig. B)			3
	External Antenna Connection (see fig. C)			4
	WARNING			4
2.	DISASSEMBLY
	2-1.	Cabinets		5
	2-2.	Service Position		6
3.	CIRCUIT ADJUSTMENTS			7
4.	DIAGRAMS
	4-1. Block Diagram (1)			9
	4-2. Block Diagram (2)			11
	4-3. Circuit Boards Location			14
	4-4. Printed Wiring Boards and Schematic Diagrams			14
		• T1 Board		15
		• A Board		19
		• B Board		23
	4-5. Semiconductors			27
5.	EXPLODED VIEWS
	5-1. Chassis Section			28
6.	ELECTRICAL PARTS LIST			29

(CAUTION)

SHORT CIRCUIT THE ANODE OF THE PICTURE TUBE AND THE AN- ODE CAP TO THE METAL CHASSIS, CRT SHIELD, OR CARBON PAINT- ED ON THE CRT, AFTER REMOVING THE ANODE.

WARNING!!

AN ISOLATION TRANSFORMER SHOULD BE USED DURING ANY SER-

VICE TO AVOID POSSIBLE SHOCK HAZARD, BECAUSE OF LIVE CHAS-

SIS.

THE CHASSIS OF THIS RECElVER IS DIRECTLY CONNECTED TO THE

AC POWER LINE.

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY SHADING AND MARK ! ON THE SCHE-

MATIC DIAGRAMS, EXPLODED VIEWS AND IN THE PARTS LIST ARE

CRITICAL TO SAFE OPERATION. REPLACE THESECOMPONENTS

WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN

THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. CIRCUIT

ADJUSTMENTS THAT ARE CRITICAL TO SAFEOPERATION ARE IDEN-

TIFIED IN THIS MANUAL. FOLLOW THESE PROCEDURES WHENEV-

ER CRITICAL COMPONENTS ARE REPLACED OR IMPROPER OPERA-

TION IS SUSPECTED.

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