Roland VS-1680 Owner's Manual page 181

Each of the function button works as shown below.
fig.12-04(tr_lvl.eps)
fig.12-05(in_lvl.eps)
fig.12-06(efx_lvl.eps)
fig.12-07(f/p_lvl.eps)
Chapter 12 Making Global Settings and Checking Conditions
[F1 (LMTrk)]: This displays the track mixer level meter.
Track Channel Level
[F2 (LM In)]: This displays the input mixer level meter.
Input Channel Level
[F3 (LMAux)]: This displays the EFFECT bus and AUX bus level meters.
Effect Send Level
[F4 (PRE)] or [F4 (POST)]: This switches the display of the meter showing
[F5 (F/P)] or [F5 (Meter)]:
AUX Send Level
the signal level before passing through the fader
(Pre) and after being adjusted by the fader (Pst).
This switches between the display of the level
meter and of the pan and fader positions for
each channel.
Track Channel
Monitor Level Master Level
Monitor Level Master Level
Monitor Level Master Level
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