Hitachi 46EX1B Service Manual

CONTENTS
This service manual gives differences between the 46EXlB and 55EXlK. For any other infor-
mation, see the 55EXlK Service Manual YK No. 0405E issued in July, 1991.
SAFETY PRECAUTIONS. ...................................................... 2
TECHNICAL CAUTIONS ....................................................... 5
SPECIFICATIONS ............................................................. 6
CIRCUIT PROTECl-ION ........................................................ 6
GENERAL INFORMATION.
.....................................................
7
CONVERGENCE ADJUSTMENT
................................................
9
CAUTIONS WHEN CONNECTING/DISCONNEClNG THE HV CONNECX)R ............ 11
EXPLODEDVIEW..
........................................................
..12
WlRlNGDlAGRAM............................................................l 5
REPLACEMENT PARTS LIST .................................................. .16
CAUTION:
Before servicing this chassis, it is important that the service technician read the
"Safety Precaution" and "Product Safety Notices" in this Service Manual.
This service manual is intended for qualified service technicians; it is not meant for the casual
do-it-yourselfer. Qualified technicians have the necessary test equipment and tools, and have
been trained to properly and safely repair complex products such as those covered by this manual.
Improperly performed repairs can adversely affect the safety and reliability of the product and
may void the warranty. If you are not qualified to perform the repair of this product properly and
safely, you should not risk trying to do so and refer the repair to a qualified service technician.
WARNING
Lead in solder used in this product is listed by the California Health and Welfare agency as
a known reproductive toxicant which may cause birth defects or other reproductive harm
(California Health & Safety Code, Section 25249.5).
When servicing or handling circuit boards and other components which contain lead in solder,
avoid unprotected skin contact with the solder. Also, when soldering do not inhale any smoke
or fumes produced.
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
PROJECTION COLOR TELEVISION
November 1991 HHEA - MANUFACTURING DWISION