SECTION TITLE
Power Management.................................................................................................................................. 4
Self Diagnosis Function ............................................................................................................................ 4
Timing SpeciÞ cation.................................................................................................................................. 4
Warnings and Cautions............................................................................................................................. 5
Safety Check Out ..................................................................................................................................... 6
1-1. Cabinet Removal ............................................................................................................................... 7
1-2. Service Position................................................................................................................................. 7
1-3. A & D Board Removal........................................................................................................................ 8
1-4. Picture Tube Removal ....................................................................................................................... 9
Anode Cap Removal ......................................................................................................................... 9
2-1. HV Regulator Check........................................................................................................................ 10
2-4. B+ Voltage Check............................................................................................................................ 10
3-2. Landing Fine Adjustment ..................................................................................................................11
3-6. Focus Adjustment ............................................................................................................................ 13
4-1. Circuit Boards Location ................................................................................................................... 14
Block Diagrams ............................................................................................................................... 15
A Board - Schematic Diagram......................................................................................................... 17
D Board - Schematic Diagram ........................................................................................................ 19
J Board - Schematic Diagram ......................................................................................................... 24
4-4. Semiconductors............................................................................................................................... 25
5-1. Picture Tube .................................................................................................................................... 26
5-2. Chassis............................................................................................................................................ 27
5-2. Packing Materials ............................................................................................................................ 28
6. Electrical Parts List ....................................................................................................................................... 29
TABLE OF CONTENTS
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HMD-A240
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