4
Installation
BEFORE SWITCHING ON POWER SUPPLY AND PQ, THE PQ MUST BE CONNECTED TO
THE POWER SUPPLY WITH THE SUPPLIED MULTICORE LEAD. PAY ATTENTION TO A
SECURE CONNECTION.
The PQ and the external power supply should be situated away from heat sources
and direct sunlight. PQ and power supply need suffi cient air circulation. Avoid instal-
lation in environments exposed to vibrations, dust, heat, cold, moisture or electrical
and magnetic fi elds.
Do not install the unit in proximity to power amplifi ers or digital processors. You
may consider placing it in a rack containing other analog gear. Such placement can
prevent interference from Word Clock, Smpte, MIDI, etc.
• Do not open the case. You may risk electric shock and may damage your equip-
ment.
• Leave repairs and maintenance to a qualifi ed service technician. Should foreign
objects fall inside the case, contact your authorized dealer or support person.
• To avoid electric shock or fi re hazards do not expose your unit to rain or damp-
ness.
• In case of lightning unplug the power supply. Please unplug the cable by pulling on
the plug only; never pull on the cable.
• Never force a switch or knob.
• To clean the case use a lint-free cloth. Avoid cleaning agents as they may damage
the chassis.
• Please support the back of the unit whenever it is being mounted into a 19 inch
rack (especially important when touring).
Setting the appropriate supply voltage
The appropriate supply voltage (115 V/230 V) must be set on the rear panel of the
external power supply. The fuse block (left from the power cord socket) can be
inserted in two positions to meet your country‘s power requirements. Refer to the
marks on the fuse block (triangles for both voltages) and insert the block with the
appropriate triangle pointing to the white line on the fuse block case.
The power supply is fi tted with 3,5 A fuses, slow blow.
Power-up sequence
It takes about four seconds until the power-up sequence is completed. During this
procedure, all potentiometers will move to the center (12 o’clock) position and a test
routine checks all 32 relays (you will notice 32 clearly audible relay clicks).
After fi nishing the power-up sequence the unit is ready to operate.
Ground Lift switch
A switch labelled „GND LIFT“ is placed on the rear panel of the power supply. It serves
to eliminate hum problems. This switch physically separates chassis ground from AC
ground; GND LIFT is activated (=chassis ground separated) when the switch points
downwards.
