Kurzweil SP5-8 - Setup Mode - Setup Selection Methods; Value Jump and Category Button Usage

Troubleshooting & Maintenance
Keyboard Problems
5-6
Keyboard Problems
Dead Keyboard
1. Follow the instructions outlined in Chapter 3 Diagnostics and run the Scanner DIAG
tests. If the tests pass, perform a hard reset.
2. Check the at ribbon cables connecting the Keyboard Bass and Treble Contact PCBs to
the Right Front Panel PCB, locations J5 and J3 respectively. Be certain that the cables are
not loose or damaged.
3. Disconnect and re-seat the cables.
4. Check the at ribbon cable connectors at location J1 on the Right Front Panel PCB and J7
on the Engine PCB.
5. Trace the signal path.
6. Find and replace bad component(s) or order a PCB replacement.
Dead Note(s) or no velocity sensitivity
One or More in a Section
1. Check the keyboard cables for proper seating and damage. Make sure they are not
pinched under the keyboard or elsewhere creating a short circuit.
2. Remove related contact PCB.
3. Check the keyboard contact strip for dirt, damage or wearing. Clean dirty contacts with
denatured alcohol. Replace a damaged or worn keyboard contact strip.
4. Install keyboard contact strip.
5. If section is still dead, remove strip and check contact PCB for shorts, cold solder joints,
etc.
6. Find and replace bad component(s) or order a replacement PCB.