Triaxis tone controls calibration procedure

[oskar]

I replaced two defective LDRs used for tone controls on the Triaxis , but they need to be adjusted for the factory preset value.
I know that there is a factory calibration procedure for LDRs used on tonecontrols , if someone have a copy of it , I will appreciate it.

Thanks.

[overdrive2009]

Triaxis tone controls calibration procedure

Triaxis tone controls calibration procedure

[oskar]

Thank you Overdrive , but I have found also these Info on the Net yet , but there , it is missing the TX4 calibration procedure , the one that it's used for the Triaxis V2 , Lead1 red Dual Rectifier mode , that is the one that I need.
In anyaway , thank you.

[defaced]

Have you emailed Mesa? They are usually pretty good about sending out schems and the like.

[oskar]

I write to Mesa , but didn't received any reply , finally I calibrated the tone controls for standard Marshall tonestack values ,following the procedure described at the Triaxis V1 calibration procedure , but taken the measurements of pot values at the TX4 Triaxis V2 board , the 330k resistor at the output of the treble wiper must be disconnected to avoid any load of the rest of the circuit in order to take the real values of LDR pots , and Gain and Lead 1 controls must be at "0.0" to avoid noise in the measurements with the ohmmeter.


Oskar