grace design
m
902
owner’s manual
7
need to return them for service, only these OEM shipping materials can ensure their safe return to our
factory.
ReGIsTeR YouR unIT!
Also, we strongly urge you to register your unit with Grace Design. We provide a limited 5 year
warranty on all of our products, but if you don’t register your system, it’s hard for us to help you if and
when help becomes necessary. So please take a few minutes to complete the enclosed warranty
registration card and mail it in, or you can simply go to the warranty registration form on our web site.
Thank you!
InsTallInG THe FeeT anD/ oR RaCKMounTInG
The m902 is designed to either be placed on a stable surface in your studio or listening environment,
or be rackmounted. If you don’t plan to rackmount your m902, first install the 4 supplied metal/rubber
feet. Simply thread (hand tighten only) theses supplied feet by hand into the 4 vacant threaded holes
in each corner of the underside of the m902.
For rackmount installation, the m902 chassis has a #10-32 threaded insert mounting hole on the
bottom towards the back. Two m902s can be mounted side by side in a standard 1U rack tray. Use a
#10-32 x 1/2” or a #10-32 x 3/8” machine screw. Do not use a screw longer than 1/2”.
poWerInG up The m902
Okay, let’s get started in making the necessary connections to get your m902 up and running.
PoweR ConneCTIons
The Disconnect Device for the m902 system is the Mains plug or the Appliance Coupler
on the power supply cord. The Disconnect Device must remain accessible and operable.
The power supply cord supplied with the m902 must be connected to a mains outlet
with a protective earthing connection.
CHeCK lIne VolTaGe seTTInGs
The IEC power entry module has been set from the factory to operate at the voltage required for your
part of the world. However, it’s important to double-check this in order to ensure no damage will
come to the unit if power is applied and the setting is incorrect.
lIne VolTaGe seleCToR
To change the line voltage, remove the AC power chord from the power inlet then use a small
screwdriver to pry open the voltage select door. Carefully remove the voltage select cam and re-insert
it with the desired voltage showing. Use the table below for voltage settings and fuse values. Note that
time delay or “slow blow” fuses are required.
Voltage and Fuse information
CAM SETTING
LINE VOLTAGE
FUSE VALUE
100V~
100V~
250V~ T 250mA L
120V~
120V~
250V~ T 250mA L
220V~
220V~
250V~ T 125mA L
240V~
230V~
250V~ T 125mA L
240V~
240V~
250V~ T 125mA L
