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CONTENTS
2. BASIC ITEMS FOR SERVICE .......................................................................................................................... 8
2.1 QUICK REFERENCE................................................................................................................................. 8
A
3. BLOCK DIAGRAM .......................................................................................................................................... 10
3.3 OVERALL BLOCK DIAGRAM .................................................................................................................. 14
3.5 TANSHI ASSY .......................................................................................................................................... 18
4. DIAGNOSIS .................................................................................................................................................... 20
4.1 POWER SUPPLY OPERATION ............................................................................................................... 20
4.1.2 POWER ON SEQUENCE ................................................................................................................... 21
B
4.2.1 VIDEO SYSTEM ................................................................................................................................. 26
4.2.2 AUDIO SYSTEM ................................................................................................................................. 27
4.4 NON-FAILURE INFORMATION ............................................................................................................... 31
4.5 OUTLINE OF THE OPERATION.............................................................................................................. 35
5. SERVICE FACTORY MODE ........................................................................................................................... 36
C
5.2 DETAILS OF FACTORY MENU................................................................................................................ 38
5.2.1 INFORMATION ................................................................................................................................... 38
5.2.2 OPTION .............................................................................................................................................. 41
7. RS-232C ......................................................................................................................................................... 43
7.1 LIST OF RS-232C COMMANDS.............................................................................................................. 43
8. GENERAL INFORMATION ............................................................................................................................. 47
9. SCHEMATIC DIAGRAM ................................................................................................................................. 48
E
F
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PDP-508XG
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