Alpha Radio 87A, Руководство по эксплуатации

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Page 14
components. You may wish to have a helper
steady the chassis during the following two
steps. (Bolts must be installed for safe
operation!)
Align the transformer captive nuts with
corresponding chassis holes. Taking care not
to torque or twist the chassis, carefully extend
it over the edge of the table just far enough to
loosely screw in the two outside transformer-
mounting bolts (1/4-20 hex head with flat
washers, supplied).
Do not stand the amplifier on edge or move it
further over the table edge. Instead, rotate it
so as to install the bolts. Now center the
transformer as much as possible so that both
sides are well clear of metalwork. Move
chassis as above while tightening all 4 bolts.
Inspect the connectors on the transformer to
be sure there is nothing blocking the
connector holes, such as pieces of shipping
materials. One of the transformer’s
connectors plugs into the AC power module
near the top/rear of the chassis center
partition, on the power supply side. Another
connector plugs into the low voltage power
supply board, which is immediately in front of
the transformer near the chassis floor.
A third (HVAC) connector plugs into the HV
board in front of the transformer and up high.
(
See Fig. 3 and views A-A and B-B) . Make
certain the connectors are properly mated and
seated, but don’t force them; they mate and
latch easily.
4.6 Insure that both tubes are fully seated in
their sockets with their red rubber chimneys
firmly contacting the chassis.
4.7 Make sure the HV crowbar works
smoothly.
4.8 Replace the cover and carefully
reinstall all screws. Be careful not to force
or cross thread the screws.
Never use
screws longer than ¼”! (Screws supplied are
¼”).
Do not attempt to operate the amplifier with
the cover removed. This could cause
damage to the Alpha 87A or you.
Alpha 87A User Manual Rev 2.0