C-1
Contents
Chapter 1 System Introduction .............................................................. 1-1
1.1. Introduction of DP-8800Plus ........................................................................... 1-1
1.1.1. Appearance ............................................................................................ 1-1
1.1.2. Rear Panel ............................................................................................. 1-3
1.1.3. Control Panel ......................................................................................... 1-4
1.2. Introduction of DP-9900Plus/DP-9900 ............................................................ 1-6
1.2.1. Appearance ............................................................................................ 1-6
1.2.2. Rear Panel ............................................................................................. 1-8
1.2.3. Control Panel ....................................................................................... 1-10
Chapter 2 Hardware Introduction ........................................................... 2-1
2.1. Hardware System ........................................................................................... 2-1
2.2. Boards ............................................................................................................ 2-1
2.2.1. Main Board ............................................................................................. 2-1
2.2.2. Transducer Board ................................................................................... 2-2
2.2.3. Connection Board ................................................................................... 2-3
2.2.4. Output Board .......................................................................................... 2-9
2.2.5. I/O Board .............................................................................................. 2-12
2.3. Power Supply Board ..................................................................................... 2-12
2.3.1. Introduction .......................................................................................... 2-12
2.3.2. Working Procedure ............................................................................... 2-13
2.3.3. Circuit Description ................................................................................ 2-13
2.3.4. Protection Circuit .................................................................................. 2-14
2.3.5. Maintenance ......................................................................................... 2-15
2.4. Principle of the LCD ...................................................................................... 2-18
2.4.1. Operating Principle of the Inverter Module ........................................... 2-18
2.4.2. Working principle of the regulating board ............................................. 2-20
Chapter 3 Disassembly of DP-9900Plus/DP-9900 ................................. 3-1
3.1. System Structure ............................................................................................ 3-1
3.2. Disassembly of Monitor................................................................................... 3-2
3.3. Disassembly of Screen ................................................................................... 3-3
3.4. Disassembly of Keyboard ............................................................................... 3-3
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