WE STRONGLY RECOMMEND THE INITIAL IO LIMITED POWER SUPPLY
INSTALLATION AND SET UP SHOULD BE CARRIED OUT BY AN APPOINTED
AUDIO NOTE (UK) DEALER.
IRREPARABLE DAMAGE NOT COVERED UNDER WARRANTY MAY BE
CAUSED TO THE CARTRIDGE AND POWER SUPPLY BY INCORRECT INITIAL
SET UP.
Once all cartridge connections have been made, the operating voltage for the
cartridge can be set.
ENSURE THE
ʻ
CARTRIDGE
ʼ
SWITCH IS IN THE
ʻ
OFF
ʼ
POSITION
(TURNED ANTICLOCKWISE / LEFT).
Connect the power supply unit to the mains supply, via the IEC socket located on the
rear / right of the device. Once connected, turn the unit on using the
ʻ
Mains On
ʼ
switch, located on the right hand side of the front fascia. Turn the switch clockwise /
right. The red
ʻ
power
ʼ
LED situated below the
ʻ
Mains On
ʼ
switch should glow RED.
Next, switch on the meter using the
ʻ
Meter
ʼ
switch, located on the lower left hand side
of the front fascia. Turn the switch clockwise / right.
At this stage the meter on the front of the power supply unit should show a reading of
1.8V DC – 2.0V DC (divide the value on the meter scale by 10).
Turn the cartridge supply on using the
ʻ
Cartridge On
ʼ
switch, located on the left hand
side of the front fascia. Turn the switch clockwise / right.
With an accurate voltmeter set to the 2V DC scale, measure the voltage at the PSU
connection pins on the cartridge.
BE EXTREMELY CARFUL, AND DO TOUCH BOTH PINS WITH THE SAME TEST
PROBE OR CREATE A SHORT CIRCUIT; THIS WILL POSSIBLY DAMAGE THE
CARTRIDGE AND POWER SUPPLY!!
The voltage at the PSU connection pins on the cartridge should be in the region of
1.2V DC to 1.3V DC.
If the voltage is within the required region, proceed to the next section of this manual
entitled
ʻ
OPERATION
ʼ
. If it is higher or lower than required, the voltage must be
adjusted as follows: -
On the rear of the power supply unit is the cartridge voltage potentiometer. Viewed
from the rear of the PSU, turn this switch
ANTICLOCKWISE
to
INCREASE
cartridge
voltage and
CLOCKWISE
to
DECREASE
cartridge voltage.
Check the cartridge voltage again, and repeat the above steps until a voltage of
between 1.2V DC and 1.3V DC is achieved.
NEVER SET THE CARTRIDGE VOLTAGE TO GREATER THAN 1.3V DC!
IO LIMITED PSU INITIAL SET UP