Change to "IF-500"

qRe1.Remove the fader knobs. (See fig-a)
wRemove the 4 screws which fix the input fader panel to
the mixer. (See fig-b)
eRemove the 2 screws which fix the input fader.
(See fig-c)
rRemove the input fader, and carefully remove the
multi-cable connector from the fader unit.
(See fig-d)
tReplace the fader unit making sure that the connector
wires are securely fastened before carefully
positioning the fader unit and affixing with screws.
HOW TO CHANGE THE INPUTFADER UNIT