Fuse Setting; Audio Connections - Quested SB10 User Manual

Exploded view of PCB viewed from above showing the voltage s election
connectors with
alternative pins for the 115V and 230V settings.
4.3.3 Fuse Setti ng
It is very unlikely the fuse will fail during normal use but should this occur the situation
must be approached with some caution. Check that the mains voltage setting is correct for
your installation supply and that the original fuse was the correct rating. (See 9.2 Spares)
The fuse may blow if the unit is subjected to mains power surges or spikes, or if the mains
wiring has any poor or faulty connections, in which case a qualified electrician should be
consulted. Very occasionally a fuse can become degraded after many years of service and
simply replacing it with a new one will restore the system.
The fuse is housed in a unit integral with the IEC inlet connector (see rear panel drawing
page of this manual). To gain access to the fuse remove the power cord and unclip the fuse
carrier using a flat blade. A spare fuse of the correct rating is also provided within the same
carrier. If none of the above is the cause of the fault it is likely that the unit has suffered an
internal component failure and will need returning to a qualified agent for servicing IF THE
REPLACEMENT FUSE SHOULD FAIL DISCONNECT FROM THE MAINS
IMMEDIATELY AND
HAVE THE UNIT PROFESSIONALLY REPAIRED BEFORE ATTEMPTING TO USE
IT.

4.4 Audio Connections

The audio signal inputs are RF filtered and electronically balanced to ensure a high level of
rejection for common mode interference signals and to give a professional connection to external
equipment. It is essential for optimal use of these specifications that a professional grade,
balanced two-core screened cable is used. The input's will accept both XLR and ¼ inch type
connectors.
Source Bala nced Pin 2 hot
In accordance with international standards, 3-pin XLR style input connectors are used, with pin
2 being designated the 'in-phase' or 'hot' terminal and pin 3, the 'out of phase' or 'cold' terminal.
Pin 1 is connected to the chassis ground and must be connected to the screen of the audio
115V
6
230V