Mitsubishi Electric HD-6000, Service Manual

MODEL: HD-6000

Page 3

INTRODUCTION ................................................................................................................................ 5

PRODUCT SAFETY NOTICE ............................................................................................................. 5

SAFETY PRECAUTIONS ................................................................................................................... 6

PWB-LOCATIONS ............................................................................................................................. 7

DISASSEMBLY .................................................................................................................................. 7

Disassembly Procedures Sequence ...................................................................................... 7
Top Cover removal .................................................................................................................. 8
HDD (Hard Drive) removal ....................................................................................................... 9
PWB’S removal ................................................................................................................... 10

ELECTRICAL ADJUSTMENTS ........................................................................................................ 11

Equipment .................................................................................................................................... 11
Option Menu / Initialization Defaults / AV Defaults ......................................................................... 12
LED Diagnostics ........................................................................................................................... 13
Remote Control Operational Mode ................................................................................................ 13
Circuit Adjustment Mode ............................................................................................................... 14
Transfering data ............................................................................................................................ 15
Adjustment Items List ................................................................................................................... 15
Adjustment Procedures ................................................................................................................ 16

Test Points .......................................................................................................................... 16
Main-Y Gain ......................................................................................................................... 16
Sub-Y Gain .......................................................................................................................... 17
Sub Picture Offset ............................................................................................................... 17

CHIP PARTS REPLACEMENT ......................................................................................................... 18

REPLACEMENT PARTS .................................................................................................................. 19

Parts Ordering .............................................................................................................................. 19
Critical and Warranty Parts Designation ........................................................................................ 19
Parts Tolerance Codes .................................................................................................................. 19

SERVICE PARTS LIST .................................................................................................................... 20

CIRCUITRY BLOCK DIAGRAMS ..................................................................................................... 29

Standby Power Supplies ............................................................................................................... 29
PWB-DM Power Supplies ............................................................................................................. 30
PWB-SIGNAL Switched Power Supplies ...................................................................................... 30
Video Select Circuitry ................................................................................................................... 31
Video Output Circuitry ................................................................................................................... 32
Sync Signal Selection ................................................................................................................... 33
Sync Signal Output Path .............................................................................................................. 34
Record Signal Path ....................................................................................................................... 34
Sound Signal Path ........................................................................................................................ 35
Control Circuitry ............................................................................................................................ 36
Command Input Circuitry ............................................................................................................... 37
Macrovision Detection ................................................................................................................... 37
PWB-DM Signal Path ................................................................................................................... 38

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