
Troubleshooting
Maintenance
12-1
Chapter 12
Troubleshooting
Maintenance
Aside from normal care in handling and use, your SP4 requires no regular maintenance.
Clean with a soft cloth dampened with water. Never use abrasives or solvents as they may
damage the unit’s paint, markings, info strip and display lens. There are no batteries inside
to replace—ever. Instead of volatile SRAM used in most other instruments, your SP4 uses
nonvolatile EEPROM for storage, which retains information without power.
Common Problems
Below is a list of the most commonly encountered problems and diagnoses for each.
Power Problems
This is the normal power-up sequence:
1. The display backlight turns on.
2. “Loading...” appears on the display for a few seconds.
3. The unit enters Program mode with Grand Piano 0 selected.
If nothing at all happens when you turn the power switch on, check if one of the following
might be the issue:
The power converter is not
plugged securely into the wall
outlet.
Plug the power converter securely
into the wall outlet.
The cord from power converter
is not plugged securely into the
SP4 DC power jack.
Plug the power converter securely
into the SP4 DC power jack.
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