Kurzweil CUP2 - Chapter 2, Printed Circuit Boards; Function Overview; Engine PCB

......................................................................................................................................................................Audio PCB 2-9
..............................................................................................................................................Function Summary 2-10
................................................................................................Power supply rectiers, lters, and regulators 2-10
......................................................................................................................................................................Mixer 2-11
...........................................................................................................................................Headphone amplier 2-11
..............................................................................................................................Frequency response shaping 2-11
.........................................................................................................................................2-way crossover lters 2-11
..................................................................................................................................................Power ampliers 2-12
...................................................................................................................................................................Muting 2-12
.......................................................................................................................................................Control Panel PCB 2-12
..............................................................................................................................................Function Summary 2-12
..................................................................................................................................................................General 2-13
............................................................................................................................................................LED Matrix 2-13
........................................................................................................................................................Switch Matrix 2-13
....................................................................................................................................................Volume Control 2-13
..........................................................................................................................................................Headphones 2-13
Chapter 3, Diagnostics
.............................................................................................................................................................Diagnostic Tests 3-1
.....................................................................................................................................................Entering Diagnostics 3-1
.....................................................................................................................Display and Control Panel Buttons 3-2
..............................................................................................................................................................Test Results 3-2
..................................................................................................................................................Diagnostic Test Modes 3-2
.................................................................................................................................................................Run Once 3-2
.........................................................................................................................................................................Loop 3-2
..............................................................................................................................................................Continuous 3-2
.......................................................................................................................................................Description of Tests 3-3
.....................................................................................................................................................SDRAM Refresh 3-3
.............................................................................................................................................................MIDI UART 3-3
..........................................................................................................................................................Internal Flash 3-3
.......................................................................................................................................................MARA Validity 3-3
................................................................................................................................................MARA Delay RAM 3-4
...............................................................................................................................................MARA Sound ROM 3-4
.........................................................................................................................................................Audio Output 3-4
.........................................................................................................................................................Scanner DIAG 3-5
.........................................................................................................................................Scanner DIAG tests 3-5
...........................................................................................................................................................Burn-in Loop 3-6
Chapter 4, Disassembly/Assembly
...................................................................................................................................................................Introduction 4-1
...................................................................................................................................Notes, Cautions, Warnings 4-1
................................................................................................................................................Cables, Connectors 4-1
..............................................................................................................................Required Tools and Materials 4-1
........................................................................................................................................................Opening the CUP2 4-2
CUP2 Service Manual
Ta b l e o f Co n t e nt s
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