Unison Research
SH
43
6.
SAFETY AND MAINTENANCE
Never operate the device with either the bottom or top covers removed.
Do not open the amplifier !
There are no user serviceable parts inside. For technical assistance or
product service please refer to your Authorised Dealer or to a Unison
Research authorised Service Centre.
Do not spill liquid into the amplifier !
If liquid should be accidentally spilled into the amplifier remove the mains
plug from the wall socket immediately and seek assistance from an
authorised Service Centre before attempting to operate it again.
Before inserting the mains plug into the wall socket ensure that the
switch on the amplifier is in the “OFF” position.
Valve replacement should be carried out using only valves of the same
type and matched in pairs.
The
SH
uses one ECC83 (12AX7) valve and two EL84 valves. The
amplifier has been designed to maximise the valves’ life-span: in laboratory
tests, 1500 hours of usable life have been exceeded.
IMPORTANT!
Before attempting valve replacement make sure that the amplifier is
switched off and remove the mains power cord from the amplifier. If in
doubt your Authorised Dealer or Service Centre will be able to assist
with this operation.
Cleaning the
SH
.
Cleaning has to be done after switching off the device and allowing the
amplifier to cool down. Use a soft dry cloth. Do not use solvents or
alcohol-based detergents. Do not rub hard on the screen-printed legends.
Never operate the amplifier when covered!
Adequate ventilation is essential at all times!
Summary of Contents for SH
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