One Systems POPS 15a - Manual (Page 21)

The fuse holder is a waterproof design. Insure that its gasket is properly seated
when replacing the fuse. Insure that the fuse holder’s cover is securely tightened.
DO NOT OVERTIGHTEN THE FUSE HOLDER COVER.
PRODUCT SERVICE
There are NO user-serviceable parts inside POPS15a (see “Replacement of
Components” section below for clarification and exceptions to this statement).
POPS15a’s amplifier module MUST be serviced by an individual authorized by
One Systems.
POPS15a’s amplifier is attached to the enclosure using 12 x M4 stainless steel
machine screws with special “sealing washers”. The unique self-sealing feature
of these washers forms a waterproof seal between the amplifier module and the
enclosure.
The washers are supplied by Gaynor Industries and are Gaynor Industries part
number LTN37164
DO NOT SUBSTITUTE WASHER TYPES.
Replacement of Components
DO NOT ATTEMPT ANY REPAIRS UNLESS POPS15a’s AMPLIFIER HAS
BEEN DISCONNECTED FROM THE AC MAINS SOURCE!
REPLACEMENT OF COMPONENTS MUST BE PERFORMED BY A
QUALIFIED TECHNICIAN OR ONE KNOWLEDGABLE IN THE REPLACEMENT
OF TRANSDUCER COMPONENTS!
In the event of woofer failure, the woofer may be accessed by removing the front
grille and then removing the woofer. This should be done by a qualified
technician or contractor. There is no need to remove the amplifier’s panel in the
event of a woofer failure. Insure that proper wiring polarity is observed. Note the
wiring polarity before disconnecting the woofer and observe this polarity when
replacing it.