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42HDT79/DW2-U
Page 68
Hitachi 42HDT79/DW2-U - Page 68
117 pages
Manual
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QUICK DISASSEMBLE GUIDE
(
Main
/
Sub
D
ig
ital
PWB
)
67
DW2U
③
Remove
Main
Digital
PWB Assy
④
Remove
Sub
Digital
PWB Assy
IS NECESSARY TO RELEASE MAIN PWB AND
SUB PWB FROM BOARD HOLDERS(3 POSITIONS)
See page 115 for part numbers
CH 4
67
69
Table of Contents
Main Page
Hds69/Dw2-U Service Manual
2
Table of Contents
2
Safety Precautions
3
Product Safety Notice
4
Servicing Precautions
5
Agency Regulatory Information
10
Acknowledgments and Trademarks
11
Introduction
12
Specifications
13
Basic Setup & Operation
25
Adjustments
39
Adjustment Procedure Start up
40
Changing Data and Selecting Adjustment Code
40
How to Get into Adjustment Mode
40
Memory Initialize
40
Memory Initialize Operation
40
Brightness Check
41
Factory and Service Adjustments
41
Sub-Contrast & Clamp Adjustment
41
Video Adjustment
41
POWER SUPPLY Vs, Va Voltage Adjustment
42
Video Color Temperature Adjustment (High)
43
Video Color Temperature Adjustment (Medium)
43
White Balance Adjustment
43
Digital Main Check
44
Video Color Temperature Adjustment (Black and White)
44
Video Color Temperature Adjustment (Standard)
44
White Balance Adjustment OSD Flowchart Diagram
45
HDMI Adjustment
47
Screen Check
47
Settings for Delivery
48
OSD Design Select
51
Troubleshooting Flowcharts
52
Block Diagrams
54
Connection Diagrams
59
Final Wiring Diagram
60
Quick Disassembly Guide
61
Final Assembly Guide
69
Waveforms
79
DC Voltages
81
Circuit Schematic Diagrams
83
Printed Circuit Boards
96
Parts List
106
Quick Reference Parts List
115
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