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SERVICE MANUAL (BSV-4251 BSV-4251A )




Service Manual




MODEL NAME DOCUMENT NO REVISION NO REVISION DATE PAGE

BSV-4251/4251A RD(1) 00 03/10/23 1/75
SERVICE MANUAL (BSV-4251 BSV-4251A )


CONTENTS


SPECIFICATION ......................................................... 4

CONTROL DESCRIPTIONS .......................................... 7

OPTIONS EXTRAS .................................................... 9

REMOTE CONTROL BUTTONS .................................... 10

DISPLAY CELL DEFECT SPECIFICATION ...................... 12

BLOCK & WIRING DIAGRAM .......................................14

MODULE FUNCTION & DEFINITION ............................. 16

MODULE BASIC CONFIGURATION ...............................17

VSC BOARD PIN CONFIGURATION .............................. 18

OSD MENU (FACTORY)............................................... 21

DESCRIPTION OF VSC FUNCTIONS ............................. 32

CIRCUIT OPERATION & WAVEFORM............................. 34

MODULE SUPPLY VOLTAGE SEQUENCE ...................... 41

VSC & PSU POWER SEQUENCE ................................... 42

VOLTAGE & W/B ADJUSTMENT.................................... 44

SAFETY PRECAUTIONS ................................................49
MODEL NAME DOCUMENT NO REVISION NO REVISION DATE PAGE

BSV-4251/4251A RD(1) 00 03/10/23 2/75
SERVICE MANUAL (BSV-4251 BSV-4251A )
(MODULE USE AND CONSIDERATIONS IN SERVICING)

TROUBLESHOOTING..................................................... 53

IMAGE STICKING CHARACTERISTICS ........................... 64

ISM MODE.................................................................... 66

SCHEMATIC &PRINTED CIRCUIT BOARD &EXPLODE VIEW ......... 67

EXPLODED VIEW PARTS LIST ....................................... 69

REPLACMENT PARTS LIST ............................................ 71

EXPLODE VIEW ............................................................ 75




MODEL NAME DOCUMENT NO REVISION NO REVISION DATE PAGE

BSV-4251/4251A RD(1) 00 03/10/23 3/75
SERVICE MANUAL (BSV-4251 BSV-4251A )

SPECIFICATIONS
Note : Specification and others are subject to change without notice for improvement.