Kurzweil PC3x Service Manual
ii
Removing the LCD Board..................................................................................................................................... 3-13
Replacing the LCD Board ..................................................................................................................................... 3-14
Removing the Front Panel Board......................................................................................................................... 3-14
Replacing the Front Panel Board ......................................................................................................................... 3-16
Removing the Engine Board................................................................................................................................. 3-17
Replacing the Engine Board ................................................................................................................................. 3-18
Removing the USB/xD Daughtercard................................................................................................................ 3-18
Replacing the USB/xD Daughtercard................................................................................................................. 3-18
Removing the Wheels Assembly ......................................................................................................................... 3-19
Replacing the Wheels Assembly.......................................................................................................................... 3-19
PC3x Keyboard Assembly............................................................................................................................................ 3-20
Removing the PC3x Keyboard Assembly........................................................................................................... 3-20
Replacing the PC3x Keyboard Assembly ........................................................................................................... 3-21
Removing Keys ...................................................................................................................................................... 3-22
Natural/White Key ........................................................................................................................................ 3-22
Removing Natural/White Keys........................................................................................................................... 3-23
Removing Sharp/Black Keys ............................................................................................................................... 3-23
Replacing a Sharp Key .......................................................................................................................................... 3-23
Replacing a Natural/White Key.......................................................................................................................... 3-24
Servicing the Keyboard Contact Boards ............................................................................................................. 3-24
Removing the Treble Contact Board ............................................................................................................ 3-24
Replacing the Treble Contact Board ............................................................................................................. 3-24
Removing the Bass Contact Board ............................................................................................................... 3-24
Replacing the Bass Contact Board ................................................................................................................ 3-25
Connecting the Keyboard Contact Boards ......................................................................................................... 3-25
Removing the Keyboard Contact Strips ............................................................................................................. 3-25
Replacing the Keyboard Contact Strips .............................................................................................................. 3-25
Chapter 4
Troubleshooting & Maintenance
Introduction ..................................................................................................................................................................... 4-1
Cables, Connectors................................................................................................................................................... 4-1
Cables ................................................................................................................................................................. 4-1
Cable Routing.................................................................................................................................................... 4-1
Surface-Mount Devices ........................................................................................................................................... 4-1
Required Tools and Materials................................................................................................................................. 4-1
Boot Loader ...................................................................................................................................................................... 4-2
Entering the Boot Loader ........................................................................................................................................ 4-2
Resets................................................................................................................................................................................. 4-2
Hard Reset................................................................................................................................................................. 4-2
Soft Reset ................................................................................................................................................................... 4-2
Saving User Data............................................................................................................................................................. 4-3
Saving to an xD Card............................................................................................................................................... 4-3
Saving to a Computer.............................................................................................................................................. 4-3
Software Updates ............................................................................................................................................................ 4-4
Updating with an xD Card ..................................................................................................................................... 4-4
Updating via Computer.......................................................................................................................................... 4-5
Rebuilding the Internal NAND Flash Memory .......................................................................................................... 4-6
Rebuilding with an xD Card .................................................................................................................................. 4-6
Rebuilding via a Computer .................................................................................................................................... 4-7
Boot EPROM .................................................................................................................................................................... 4-9
Removing the EPROM ............................................................................................................................................ 4-9
