ii
4.1.2 Exploded View of Keyboard Module .................................................................... 4-3
4.1.3 Exploded View of Main Unit Box Module ............................................................. 4-5
4.2
Structure Disassembly ............................................................................................ 4-6
4.2.1 Disassemble Top Cover ........................................................................................ 4-6
4.2.2 Disassemble IO Back Cover ................................................................................. 4-8
4.2.3 Disassemble and Replace IO Board .................................................................. 4-10
4.2.4 Disassemble Back Cover of Main Unit Box ........................................................ 4-11
4.2.5 Disassemble and Replace Power supply board ................................................. 4-12
4.2.6 Disassemble and Replace Main Board and Probe Board .................................. 4-13
4.2.7 Disassemble and Replace Harddisk(Optional devices) ................................ 4-17
4.2.8 Disassemble and Replace CRT, CRT Adjustment Board and Main Unit
Connection Board ........................................................................................................ 4-19
4.2.9 Disassemble and Replace Monitor Protection Screen ....................................... 4-21
4.2.10 Disassemble Keyboard, Trackball and Speaker ............................................... 4-22
4.2.11 Disassemble and Replace Fan and Dustproof Net .......................................... 4-26
4.2.12 Disassemble USB Extension Line .................................................................... 4-27
4.3
Installation of Optional Devices ............................................................................ 4-28
4.3.1 Installation of Video Printer ................................................................................. 4-28
4.3.2 AC Mobile Power DA-88 ..................................................................................... 4-29
4.3.3 Footswitch ........................................................................................................... 4-29
5
Maintenance Requirements ................................................................. 5-1
5.1
Tools Used in Maintenance .................................................................................... 5-1
5.1.1 Tools, Measurement Devices, Consumables ....................................................... 5-1
5.2
Maintenance Personnel .......................................................................................... 5-2
6
Checking ................................................................................................ 6-1
6.1
System Status Checking ........................................................................................ 6-1
6.1.1 Checking Plan ...................................................................................................... 6-1
6.1.2 Confirmation before Checking .............................................................................. 6-1
6.2
Checking Functionality ........................................................................................... 6-2
6.2.1 Flow of Functionality Checking ............................................................................. 6-2
6.2.2 Details of Functionality Check .............................................................................. 6-2
6.3
Safety Checking ..................................................................................................... 6-3
6.3.1 Mechanical Safety Checking ................................................................................ 6-3
6.3.2 Electrical Safety Checking .................................................................................... 6-5
6.4
Image Checking ..................................................................................................... 6-5