Manual De Usaurio

FILE NO. 020-200111

SERVICE MANUAL

COLOR TELEVISION
N1NSP Chassis

50A61, 50A11
61A61
(TAC0171)

(TAC0172)

(TAC0173)

TOSHIBA CORPORATION
1-1, SHIBAURA 1- CHOME, MINATO-KU, TOKYO 105-8001, JAPAN

PUBLISHED IN JAPAN,

Jul., 2001 So

GENERAL ADJUSTMENTS

TABLE OF CONTENTS
CHAPTER 1 GENERAL ADJUSTMENTS
SAFETY INSTRUCTIONS........................................................................................................................................ 3
CRT ASSEMBLY REPLACEMENT AND MOUNTING ............................................................................................. 4
PICTURE TUBE COMPONENTS ADJUSTMENT .................................................................................................... 6
REPLACEMENT OF THE CRT................................................................................................................................. 8
SERVICE MODE ...................................................................................................................................................... 9
ELECTRICAL ADJUSTMENT................................................................................................................................ 11
CONVERGENCE ADJUSTMENT .......................................................................................................................... 13

SPECIFIC INFORMATIONS

SCREEN AND MIRROR ALIGNMENTS ................................................................................................................ 15
CIRCUIT CHECKS................................................................................................................................................. 16
CHAPTER 2 SPECIFIC INFORMATIONS
SETTING & ADJUSTING DATA .............................................................................................................................. 17
LOCATION OF CONTROLS................................................................................................................................... 18
PROGRAMMING CHANNEL MEMORY ................................................................................................................. 20
CIRCUIT BLOCK DIAGRAM .................................................................................................................................. 21
MECHANICALDISASSEMBLY .............................................................................................................................. 23
CHASSIS REPLACEMENT PARTS LIST ............................................................................................................... 25
PC BOARDS BOTTOM VIEW................................................................................................................................. 43
TERMINAL VIEW OF TRANSISTORS ................................................................................................................... 49
SPECIFICATIONS .................................................................................................................................................. 53
APPENDIX:
CIRCUIT DIAGRAM

–2–

CHAPTER 1GENERAL ADJUSTMENTS

X-RAY RADIATION PRECAUTION
1. Excessive high voltage can produce potentially hazardous
X-RAY RADIATION. To avoid such hazards, the high voltage must not be above the specified limit. The nominal
value of the high voltage of this receiver is (A) kV at zero
beam current (minimum brightness) under a 120V AC
power source. The high voltage must not, under any circumstances,exceed (B) kV.
Refer to table-1 for high voltage (A), (B).
(See SETTING & ADJUSTING DATA on page 17)

2. This receiver is equipped with a Fail Safe (FS) circuit which
prevents the receiver from producing an excessively high
voltage even if the B+ voltage increases abnormally. Each
time the receiver is serviced, the FS circuit must be checked
to determine that the circuit is properly...