CAUTION:
It is always possi le to use a fuse of a smaller value than the original (if the unit powers up and
works, of course), ut it is not advisa le to use a larger fuse! The fuse is there to reduce the risk
of fire in the unlikely event of a short circuit in the rack, however, it will not protect you from
electrical shock..
Always power your rack with a three conductor power cord. Using a “cheater plug” (ground lift
adapter) to lift the safety ground pin can cause dangerous conditions in the unlikely event that
there is a mains wiring pro lem in the rack.
PSU status LED’s.
The power supply has mutual shutdown of +/-16v rails to protect op amps. If
power lights fail to come on, power the rack down and remove modules one at a time,
re-applying power after each module is removed; check status LED’s until the faulty
module has een found and removed.
Module installation (not w ile powered!).
Modules should only e installed/removed when power is ‘off’. Doing otherwise
can damage certain modules.
Mic preamps should e placed to the left side of the rack to keep as much
distance etween them and the power transformer as possi le.
CAUTION!
If you are installing modules and you do not understand basic electrical safety, please
ave a qualified electronics tec nician perform t is step! T ere is t e possibility of
coming into contact wit mains voltages w en working on t e rack if it is connected to
mains voltage (t e rack IS connected to mains for t is step).
Important: Use only one and w en touc ing power transformer (keep t e ot er and in
your pocket)!! Touc ing a grounded surface could result in a s ock. Once again, if you
are not comfortable working closely (and safely) wit mains voltage, ave a qualified
electronics tec nician perform t is step.
Under certain circumstances, if it is necessary to install a mic preamp in slot 5 or 6,
nearest the power supply, lower hum and noise may e o tained y rotating the power
transformer. A qualified technician who is familiar with mains safety should perform this.
Loosen transformer mounting olt and rotate the power transformer until lowest noise
position is found then re-tighten mounting olt.
