Sony STR-DE625 Owner's Manual page 35

Adjustments Using the SET UP Button
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The SET UP button allows you to make following
adjustments.
1
Press SET UP repeatedly until "DSPL SET UP"
appears in the display.
2
Press the cursor buttons (AJV) to select
"DIMMER."
3
eress the cursor buttons (<_/_) to select the
brightness level.
You can select any of four brighmess levels.
Increasingthe:oumut
level_ofthe .rear..:
1 Press SET UP repeatedly until "REAR GAIN" appears
in the display.
2 Press the cursor buttons (_/_) to select "GAIN
UR"
To restore the normal output level
Repeat the procedure above, selecting "GAIN NORM" in
Step 2.