ADDITIONAL SWITCHING SYSTEM
®
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STEP 2. Preparation
Ensure that the unit is powered down and NOT plugged into the wall. Go grab a #2 and #1
phillips screwdriver from your tool box.
Discharge any static electricity you may have picked up by touching a metal chair or table
STEP 3. Removing the lid and front and rear blank panels
•Using a #2 phillips head screwdriver (not supplied), carefully first remove the 8 black screws
securing the lid (14).
•Using a #1 phillips head screwdriver, remove the four
#4-40 x 1/4” sliver screws in the blank face
plate (9).
•Using a #2 phillips head screwdriver, remove the four
#6-32 x 1/4” black screws in the rear plate
(5).
Tip:
,
Put the screws somewhere where they won’t roll into the shag carpet like a recycled Trader Joes
Salsa Cruda container. You’ll need these in a minute.
STEP 4. Installing the board
•Where you just removed the rear panel, slide the board and rear panel assembly (1) through the
rectangular opening.
•Attach it to the rear with the four
#6-32 x 1/4” black screws removed from rear blank (5).
•Screw board down (13) with four
#6-32 x 3/8” machine screws (3).
•Attach the DAC-ST face (2) with the four
#4-40 x 1/4” silver screws removed from the front blank
(4).
STEP 5. Wiring the goods
•Before attaching the 20 pin large ribbon cable (7), orient the A.S.S. exactly as in the prior photo op
and note the red edge. Now, connect the ribbon cable to the DAC-ST PCB (11) with the red edge
on the left. Then, join it to the main module PCB (15) with the red edge on the lower half of the
ribbon. Note the gentle fold in the ribbon.
•Before attaching the 12 pin small flat ribbon cables (6) orient the A.S.S. exactly as in the prior
photo op. Now, noting the blue end of the ribbon connector, connect them between main (12) and
front PCB’s (16).
