CYBER DELUXE
SERVICE NOTES
Fender Cyber-Deluxe Step by Step Troubleshooting Guide for Hardware Problems
NO AUDIO
Setup: Follow the instructions as stated under notes 8, on the Cyber-Deluxe Main Schematics
(0056389000 Sheet1).
1. Turn on the power to the Cyber-Deluxe and press the Manual button.
2. Do the tone control LED’s come on?
2.1 If the LED’s do not come on, but there is Audio, check the ribbon cables and LED’s.
2.2 If the LED’s do not come on and there is no Audio, check the power supplies.
3 Does the 7-segment display come on?
3.1 If the 7-segment display does not come on, but there is Audio, check the display.
3.2 If the 7-segment display does not come on and there is no Audio, check the power supplies.
3.2.1 If the power supplies are OK then check the ribbon cables.
3.2.2 If the ribbon cables are OK, swap the Front Panel board .
4 If both the tone control LED’s and the 7-segment display come on, but there is no audio, then check the
speaker connections. Remove any rear panel audio connections (Headphones, FX etc).
5 If the Speaker is OK and there is no Audio, then check the power supplies.
6 If the power supplies are OK, check for Audio on Effects Send.
6.1 If there is no Audio on Effects Send:
6.1.1 Check for Audio on U1 Pin1 on the Main PCB.
6.1.2 If there is Audio on U1, then swap the Rear Panel PCB.
6.1.3 If there is no Audio on U1, then swap the Main PCB.
6.2 If there is Audio in Effects Send:
6.2.1 Check for Audio on P1 Pin10 on the Rear Panel PCB.
6.2.2 If there is no Audio on P1 Pin10, then swap the Rear Panel PCB.
6.2.3 If there is Audio on P1 Pin10, then check for Audio on TP2 & TP9 on the Main PCB.
6.2.4 If there is no Audio on TP2 & TP9, then swap the Main PCB.
6.2.5 If there is Audio on TP2 & TP9, then check for Audio on TP3 on the Main PCB.
6.2.6 If there is no Audio on TP3, then swap the Main PCB.
6.2.7 If there is Audio on TP3, then swap the Power Amp PCB.
