ModWright Instruments LS 100, Руководство пользователя

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Upgrade Installation:
If you are installing the phono upgrade in an existing unit, first remove the two screws and nuts
that hold the OPT. plate to the back of the enclosure. Install the brass ground screw in the top
hole, by inserting the screw from the inside of the chassis, out. There should be a small nut tight
to the head of the screw. The other small nut will be threaded to the outside end of the screw, on
the external portion of the chassis. This secures the screw to the chassis. Then the ‘Thumb Nut’
or grounding lug, is threaded onto the brass screw. You may put one of the 6-32” screws and
nuts back into the remaining hole in the chassis and tighten, to fill the other hole that was used to
secure the OPT. plate in place.
Carefully align the phono board with the two 20-pin male headers on the tube board. Once all
pins are properly aligned, firmly but gently push down until phono board is firmly seated on
headers.
You will also need to secure the provided 4-40 size screw, in a hole in the phono PCB, threading
into a standoff on the main tube board. Tighten with provided 1/16” allen tool.
Lastly, install the Left (Black washers) and Right (Red Washers) RCA’s in the back panel of the
unit. Washers should isolate RCA body from metal enclosure.
At this point, please refer to previous page for location of tubes and tube loading options.
Thank you and enjoy the ModWright Phono upgrade for the LS 100.