8
Initializion
Initializion
Initializion
Initializion
Initializion
Unpac
Unpac
Unpac
Unpac
Unpacking
king
king
king
king
Your new IRP professional sound products L.P.
PA-4020B Power Amplifier has been carefully
packed and shipped to you in an approved ship-
ping container.
Open and unpack the unit on a clean, firm flat
surface
Remove the power amplifier from the die-cut card-
board fillers and the line cord from the accessory
bag. The unit is shipped from the factory with the
front-panel (faceplate) installed.
Inspect the unit for shipping damage immediately
upon receipt. If any damage is found, promptly
notify the shipping company. Only the consignee
(you) can initiate a claim with the shipping carrier
for shipping damage. In the event of shipping
damage, be sure to save the shipping carton for
inspection by the carrier’s agent.
Retain all packaging materials for use in the event
that the unit has to be moved or shipped at some
future time. To avoid damage and/or scratching,
transport units to the job-site in their shipping con-
tainers.
Pr
Pr
Pr
Pr
Product Inspection
oduct Inspection
oduct Inspection
oduct Inspection
oduct Inspection
Examine the rear panel of the device.
Appearing adjacent to the IEC power line recep-
tacle are two screened labels reading 240VAC-
3A at the top of the receptacle and 120VAC-6A
below the receptacle. Make sure your unit is
marked with a
√√√√√
in the appropriate box.
Verify that the two (green) screw-clamp connec-
tors are inserted into the amplifier input
connection receptacles and that they have not
been dislodged in shipment.
Examine the dipswitch carefully for possible ship-
ping damage. Verify that the Bridge/Stereo switch
is in the proper position for the intended service.
Mounting
Mounting
Mounting
Mounting
Mounting
The PA-4020B is intended for mounting in a stan-
dard 19” equipment cabinet and will occupy
1-RU (1.75”) of rack space. The unit is attached
to the equipment rack by using four mounting
screws inserted through the rack lug spaces at
the front of the amplifier chassis. To avoid scratch-
ing the faceplate, it is recommended that a fiber
washer be installed between the screwhead and
the faceplate.
Your PA-4020B amplifier has no ventilation holes
in the chassis; hence it is fairly impervious to the
possibility of dust, dirt or other contaminates en-
tering the chassis interior. However, like all other
electronic equipment, it should be mounted in a
conditioned space to insure that it is operating in
a stable temperature and dust-free environment.
Grounding
Grounding
Grounding
Grounding
Grounding
Equipment racks (cabinets) and the components
installed therein should be properly grounded in
accordance with National Electrical Code (NEC)
and all other applicable codes and standards. The
third prong (green wire) of the ac line cord should
not be relied upon to provide proper grounding.
2
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