4. Six key solenoids will not play
1. Check all 6 key solenoids for grounding and ohm resistance. The ohm resistance
is 12 (+/ – 1 ohm), so the range is 11-13 ohms. Replace key solenoids if
grounded or out of the ohm range. (see pictures below)
2. Replace the key driver board as one or more grounded solenoids damaged the
driver board.
Checking ohm resistance Cheking solenoid for grounding
5. Pedal Solenoid does not work
1. Unplug the pedal solenoid and check for grounding and ohm resistance The ohm
resistance is 6.5(+/- ½ ohm), so the range is 6-7 ohms. Replace if out of range.
• To check for grounding, touch one lead to the connector and the other to the body of
the solenoid. If you get continuity or a beep the solenoid is bad.
• System 2017 and older the key driver board will need to be replaced if the pedal
solenoid is grounded out.
NOTE: A “resettable” fuse has been used since 2018 which protects the pedal
components on the driver board (diode and transistor) in most all cases.
Pedal solenoid resettable fuse Testing ohm resistance Checking for grounding
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