Sony STR-DE897 Operating Instructions Manual page 27

P SLEEP: Lights up when sleep timer is
activated.
Q Playback channel indicators: The letters
(L, C, R, etc.) indicate the channels being
played back. The boxes around the letters vary
to show how the receiver downmixes the
source sound (based on the speakers settings).
L (Front Left), R (Front Right), C (Center
(monaural)), SL (Surround Left), SR
(Surround Right), S (Surround (monaural or
the surround components obtained by Pro
Logic processing)), SB (Surround Back (the
surround back components obtained by 6.1
channel decoding)), SBL (Surround Back
Left), SBR (Surround Back Right)
Example:
Recording format (Front /Surround): 3/2
Output channel: Surround speakers absent
Sound Field: A.F.D. AUTO
L C
SL SR
R
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