Fender CYBER-TWIN Service Manual page 12

MOTOR POT DOES NOT WORK
Run Motor Pot Test described on
Motor Pot A/D Section
Schematic (0055766000)
YES
Amp Motor Pot
OK OK
NO
Power Supplies
OK
YES
Voltage on PW
Pins 1-8 while Supplies in Motor Pot A/D
running Pot test
YES NO
Swap Motor
Voltage on Pin1&3 of
Pot
BA6218 Controller
YES
Swap BA6218
Controller
NO
Troubleshoot Power
Section on Main PCB
(0055766000)
NO
Proceed to Digital Test
described on Motor Pot
A/D Section Schematic
(0055766000)