User Guide

it). Put the red lead from the SS-221 module through the same terminal lug, trimming as

necessary. Solder 5 wires at this lug.

( ) Put the (-) lead of the bridge rectifier that is opposite of the (+) lead through the center

(ground) lug of the terminal strip. Put the black lead from the SS-221 module through the

same terminal lug, trimming as necessary. Solder 3 wires at this lug.

( ) Solder the left lead of the bridge rectifier to the terminal lug that has the red wire from the

transformer soldered to it.

( ) Solder the loose red transformer wire (removed earlier) to the remaining lead of the bridge

rectifier.

( ) Position the bridge rectifier so that it is clear of any wiring. It will be held in place by its

leads.

( ) Locate the 8-32 screw just forward and to the left of the line voltage selector strip. This

holds down one corner of the HV transformer. Remove the nut and place the #8 solder lug

(supplied) over the protruding screw. Replace the nut and hand tighten.

( ) Take the 2 ZNR suppressors marked 14K20IU and put one lead of each through the new

solder lug. The other end of the ZNR suppressors goes to the end terminals of the voltage

selector terminal strip (NOT to the screws holding the strip down).

( ) Position the ZNR suppressors and the ground lug so that the ZNR leads are in the clear.

Solder the 2 leads to the ground lug and trim off any excess. Now fully tighten the 8-32

screw and nut holding the ground lug and transformer.

( ) The ZNR suppressor marked 14K39IU is connected between the end terminals on the

voltage selector terminal strip (the same strip where the 14K20IU suppressors are

connected). Place the leads from the ZNR suppressors under the terminal screws and

tighten.

( ) Dress the power leads back into the wire bundle and tie using lacing, cord, string or tie-

wraps.

( ) Locate the antenna changeover relay and identify the wires connected to the relay coil.

There should be a red wire on the lug nearest the front panel. Solder the lead from the

banded end (cathode) of one of the supplied diodes to the relay coil lug with the red wire

soldered to it. Solder the lead from the unbanded end (anode) of the other diode to the

opposite relay coil lug. Both free diode leads should be extending to the right, toward the

output coax cable.

( ) Bend the two free diode leads so that they touch, but are clear of any other wiring. Solder

these leads together.

( ) Place the SS-221 module in the clear space in front of the input voltage selector terminal

strip, relays down. When a good location has been found, lift the module and clean the

chassis at this location with alcohol or other similar cleaning fluid.

( ) Place a small dab of silicone adhesive on the top of each relay and place the SS-221

module back onto the chassis. Use a weight of some kind to hold the SS-221 module

down. Let the silicone cure for at least 12 hours (24 hours is better) before reassembling

the case to the amplifier.