Fender CYBER-TWIN HEAD, Руководство по обслуживанию, Страница: 6 / 44

CYBER-TWIN HEAD
NO AUDIO ON HEADPHONES JACK (cont)
3. If there is Audio Output through the Speakers, check if ribbon cable P3 is OK.
3.1If the ribbon cable is OK, then swap the Analog I/O PCB.
3.2 If the ribbon cable is defective, then swap the cable.
FX KILL/ FOOTSWITCH IS NOT WORKING
Setup: See Footswitch Notes on the Digital I/O Board Section Schematics (0057498000 Sheet 3).
1. Check the Voltage on U26 Pins 4,5,10,11,12.
2. If the Voltages are not correct check the Power Supply.
2.1. If the Power Supply is OK check the area around J3 and J5.
3. If the Voltages are correct check for Digital Activity on U26 Pins 7 & 15.
3.1. If there is no Digital Activity on Pins 7 & 15 check the Ribbon Cable P4 and swap if
necessary.
3.1.1. If the Ribbon Cable on P4 is OK, check the Ribbon cable on P7. Swap if necessary,
otherwise swap the Front Panel PCB (0055754000).
4. If there is Digital Activity on Pins 7 & 15, check for Digital Activity on U26 Pin 13.
4.1. If there is no Digital Activity on Pin 13 swap U26, otherwise check the Ribbon Cable P4
and swap if necessary.
4.1.1. If the Ribbon Cable on P4 is OK, check the Ribbon Cable on P7. Swap if necessary,
otherwise swap the Front Panel PCB (0055754000).