Kurzweil PC3x, Руководство по обслуживанию

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Kurzweil PC3x Service Manual
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Replacing the EPROM............................................................................................................................................. 4-9
Replacing the Battery.................................................................................................................................................... 4-10
Accessing the Battery............................................................................................................................................. 4-10
Removing the Battery............................................................................................................................................ 4-10
Installing the Battery ............................................................................................................................................. 4-10
Scanner Tests ...................................................................................................................................................................4-11
Front Panel Buttons ................................................................................................................................................4-11
Alpha Wheel ........................................................................................................................................................... 4-12
Front Panel Sliders ................................................................................................................................................. 4-12
Right Main Output................................................................................................................................................. 4-12
Switch Pedals 1, 2, and 3 ....................................................................................................................................... 4-12
Continuous Control Pedal 1 and 2 ...................................................................................................................... 4-12
Wheels ..................................................................................................................................................................... 4-13
Adjusting the Pitch Wheel Center ................................................................................................................ 4-13
Keyboard ................................................................................................................................................................. 4-13
Adjusting Key Pressure Sensitivity .............................................................................................................. 4-13
Power Problems............................................................................................................................................................. 4-14
Dead: LEDs, LCD backlight, and xD Card socket not lit ................................................................................. 4-14
Audio Problems............................................................................................................................................................. 4-14
No Audio................................................................................................................................................................. 4-14
Front Panel Problems.................................................................................................................................................... 4-15
LCD not lit............................................................................................................................................................... 4-15
LCD lit, no characters ............................................................................................................................................ 4-15
Buttons, Sliders or Controllers not working ...................................................................................................... 4-15
Keyboard Problems....................................................................................................................................................... 4-16
Dead Keyboard....................................................................................................................................................... 4-16
Dead Note(s) or no velocity sensitivity .............................................................................................................. 4-16
One or More in a Section................................................................................................................................ 4-16
PC3x Interconnect Diagram......................................................................................................................................... 4-17
Converting the Voltage................................................................................................................................................. 4-18
Accessing the Fuses ............................................................................................................................................... 4-18
The Fuse Holder ..................................................................................................................................................... 4-19
Using 5 mm X 20 mm Fuses .......................................................................................................................... 4-21
Replacing the Fuse Holder ................................................................................................................................... 4-21
Chapter 5 Parts Lists
PCB & Sub Assemblies ............................................................................................................................................ 5-1
Engine Board............................................................................................................................................................. 5-1
Connector Board ...................................................................................................................................................... 5-4
Front Panel Board..................................................................................................................................................... 5-6
Slider Board............................................................................................................................................................... 5-7
Engine Board–USB/xD Daughtercard.................................................................................................................. 5-7
Button Board ............................................................................................................................................................. 5-8
Wheels Assembly ..................................................................................................................................................... 5-8
Keyboard Assembly................................................................................................................................................. 5-8
Miscellaneous ........................................................................................................................................................... 5-9
Chapter 6 Schematics
Engine Board Assembly–SH7705 CPU and Memory (1 of 9) ................................................................................... 6-3
Engine Board Assembly–MARA 2 (2 of 9)................................................................................................................... 6-4