7. SAFETY AND MAINTENANCE
PRECAUTIONS
Never operate the player 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 Unico CDDue is in the “OFF” position.
If you do not intend to use the Unico CDDue for a long period of time
we strongly recommend you unplug from the mains at the wall socket.
Valve replacement should be carried out using only valves of the same
type and matched in pairs.
The Unico CDDue uses four ECC83 (12AX7) valves. The device has been
designed to maximise the valves’ life-span: in laboratory tests, 1500 hours
of usable life have been exceeded.
IMPORTANT!
Before attempting a valve replacement make sure that the UnicoCDDue
is switched off and allow sufficient time for the valves to cool. 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 Unico CDDue.
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 Unico CDDue when covered! Adequate ventilation is
essential at all times!
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