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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.