JVC KS-T807 Service Manual page 101

How to reset your unit
After detaching the control panel, press the reset button on the panel holder using a ball-point pen
or a similar tool.
This will reset the built-in microcomputer.
Note:
Your preset adjustments—such as preset channels or sound adjustments—will also be erased.
How to use the M MODE button
If you press M MODE, the unit goes into functions mode, then the number buttons work as different
function buttons.
• When connecting a JVC MP3-compatible CD changer: The 5/∞ buttons will also work as
+10/–10 buttons after pressing M MODE.
Ex.: When number button 2 works as MO (monaural) button.
To use these buttons for original functions again after pressing M MODE, wait for 5 seconds
without pressing any of these buttons until the functions mode is cleared.
• Pressing M MODE again also clears the functions mode.
2
Time countdown indicator