Kurzweil K2700 Musician's Manual page 353

Troubleshooting
Common Problems
ISSUE
REMEDY
ISSUE
REMEDY
If there's evidence of the unit receiving power, but operation is abnormal, check if one of the
following might be the issue:
ISSUE
REMEDY
Display "Brightness"
ISSUE
REMEDY
10-2
The power cable is not plugged securely into the K2700
power jack.
Plug the power cable securely into the K2700 power jack.
The wall outlet, power strip, or extension cord is defective or
damaged.
Use a different wall outlet, power strip, or extension cord.
The wall outlet voltage is below 90 volts due to overload.
Try a different outlet on a different circuit.
The Display is blank or difficult to read.
Slowly turn the Display brightness knob (located above the Navi-
gation buttons) to adjust the Display.