AMX TXC16 Plus Specifications download pdf (Page 182)

SG-2000 MANUAL 175

The SGC Building, 13737 S.E. 26th St. Bellevue, WA. 98005 USA

Q20 and D1 energizing the relay, K14. If a voltage in excess of the zener

breakdown voltage of D11 is applied, transistors Q19 and Q21 turn on and Q20

turns off. Diode D13 provides protection from transient voltage spikes.

23.2.3 Test Setup

Ensure screws holding the final transistors; Q6, Q7, Q10 and Q11 have 12 inch

lbs. of torque.

Using the LPA sample board, visually check:

Check all electrolytic capacitors for polarity.

Check for any solder bridges.

Ensure R21 is not touching the PCB.

Install any missing parts, except IC3, IC4, F1, F2 and F3.

Check the orientation of transistors and other parts.

Check the wires on T10 and T8. The colors should alternate green and red.

Check the wires on T6. They should crisscross as shown in the figure below.

Notice, the order of the wires on the teroid does not have to be the same order

as the solder connections.

red

orange

yellow

green

yellow

orange

red

Side View

red

yellow

orange

green

orange

yellow

red

Top View

Set the resistors,

R20 to approximately mid value

R28 to approximately mid value

R2 to approximately mid value

R32 to approximately mid value

R41 to fully clockwise

R42 to fully clockwise

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AMX TXC16 Plus Specifications Page 182