Kurzweil SP5-8, Service Manual, Page: 6 / 76

Table of Contents
vi
Chapter 3 Diagnostics
Diagnostic Tests .................................................................................................................................................3-1
Entering Diagnostics .........................................................................................................................................3-1
Display and Front 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 Loopback ...........................................................................................................................................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 Test .................................................................................................................................................3-6
Chapter 4 Disassembly/Assembly
Introduction ........................................................................................................................................................4-1
Notes, Cautions, Warnings .......................................................................................................................4-1
Cables, Connectors .....................................................................................................................................4-1
Required Tools and Materials ...................................................................................................................4-1
Top Enclosure .....................................................................................................................................................4-2
Opening the SP5-8 ......................................................................................................................................4-2
Removing the Endcaps ..............................................................................................................................4-3
Removing the Top Enclosure ....................................................................................................................4-3
Replacing the Top Enclosure ....................................................................................................................4-4
Replacing the Endcaps ..............................................................................................................................4-5
Closing the SP5-8 ........................................................................................................................................4-5
Removing the Engine PCB ........................................................................................................................4-6
Replacing the Engine PCB ........................................................................................................................4-7
Removing the Right Front Panel PCB .....................................................................................................4-8
Replacing the Right Front Panel PCB ......................................................................................................4-9
Removing the LCD...................................................................................................................................4-10
Replacing the LCD ...................................................................................................................................4-10
Removing the Left Front Panel PCB ......................................................................................................4-10
From the Rear Panel ..........................................................................................................................4-10
From the Front Panel ........................................................................................................................4-10
Inside the Top Enclosure ..................................................................................................................4-11
Replacing the Left Front Panel PCB ......................................................................................................4-12
On the Rear Panel ......................................................................................................................4-12
On the Front Panel .....................................................................................................................4-12