Hitachi UT42V702/D8MW, Service Manual, Page: 2 / 90

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CONTENTS
SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
PRODUCT SAFETY NOTICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
SERVICING PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
AGENCY REGULATORY INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
ACKNOWLEDGEMENTS AND TRADEMARKS . . . . . . . . . . . . . . . . . . . . . . . . . . 9
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
BASIC SETUP & OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
TROUBLESHOOTING FLOWCHARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
CONNECTIONS DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
FINAL WIRING DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
FINAL ASSEMBLY GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
WAVEFORMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
DC VOLTAGES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
CIRCUIT SCHEMATIC DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
PRINTED CIRCUIT BOARDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
MAIN PARTS VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
CAUTION:
These servicing instructions are for use by qualified service personnel only. To reduce the
risk of electric shock do not perform any servicing other than that contained in the operating
instructions unless you are qualified to do so. Before servicing this chassis, it is important that
the service technician read the “IMPORTANT SAFETY INSTRUCTIONS” in this service manual.
SAFETY NOTICE: USE ISOLATION TRANSFORMER WHEN SERVICING
Components having special safety characteristics are identified by a ! on the schematics and on the
parts list in this service data and its suplements and bulletins. Before servicing the chassis, it is important
that the service technician read and follow the “Important Safety Instructions” in this service manual.
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
LCD DISPLAY PANEL
OCTOBER 2008 HIMEX MANUFACTURING DIVISION
SERVICE MANUAL
NTSC
ATSC
ready monitor
D8MW
Chassis
PA No. 0239
UT42X902 / D8MW
UT42V702 / D8MW
Remote controls:
UT42X902 - P#: HL02561 (CLU-4981S)
UT42V702 - P#: HL02562 (CLU-4982S)