Icom IC-775DSP Instruction Manual page 64

Regulator unit. PA unit Antenna tuner
` i Space for optional DSP unit
R voice synthesizer unit (IC-775DSP only,
optional for IC-775)
R3 Meter scale S9 + 30 dB set
([RF]: Max. CW, [SQL]: 3 o'clock)
W Left side view
R201 Low intensity adj.
R26 Beep tone level adj.