- Plinius Instruction Manual SB-301

15
SB-301 FEATURES
ERROR DETECTION
The Plinius SB-301 Power Amplifier has in-built error detection. This will function under the following
conditions:
• When the amplifier is overdriven/clipped
• If any internal fuse is damaged
Should either of these circumstances arise the amplifier will disconnect both channels and mute the input.
This condition will remain until the input signal level is reduced or the damaged fuse replaced. When
error detection is triggered the error LED will flash, and the power LED will go out.
FUSE PROTECTION
When any internal fuse is damaged one or more fuse warning LEDs will light. These LEDs are under the
amplifier lid located near the centre of the main circuit board with the rail fuse holders. If any of the
internal fuse LEDs are glowing, the lid of the amplifier will need to be removed and the fuse adjacent to
the lit LED should be replaced. Replace them with the same type (15 amp normal blow).
IMPORTANT: DO NOT FIT A FUSE WITH A HIGHER RATING.
Please note that fuse failure may indicate a severe problem. Check all speakers and speaker cables for
damage/short circuit etc. Should the amplifier continue to exhibit rail fuse failure contact your PLINIUS
dealer.
LED BRIGHTNESS CONTROL
Your Plinius SB-301 has an internal LED brightness control that will adjust all three front panel LEDs. A
small flat bladed screwdriver can be used to adjust the brightness. The LED brightness control is a small
multi turn potentiometer and is located on the front of the main circuit board within the top cavity of the
amplifier, and is labelled VR7. Make sure you adjust the correct potentiometer, and remember to remove
the mains supply from the amplifier before making any adjustments.