Ramsey Electronics AR2 Manual de instrucciones descargar pdf (Pagina 18)

ABM1 • 18

 Install R3, 100k ohm resistor (brown-black-yellow). This part is located at

the notched end of U4.

 Install R5, 1k ohm resistor (brown -black-red). This part is located in the

corner of the board that does not have anything mounted yet.

 Install R4, 10k ohm potentiometer (marked B10K). The three

potentiometer contact leads (middle leads) may need to be bent slightly to

fit in the holes. This was done intentionally to keep the part in the board

while soldering. Ensure all five leads are sitting squarely on their

shoulders before soldering.

AUDIO AMPLIFIER

 Install R11, 10k ohm potentiometer with switch (marked A10K). Install this

part exactly like R4. Ensure all five leads are sitting squarely on their

shoulders before soldering.

 Install C20, 1uF electrolytic capacitor. Be careful to check the polarity;

refer to step X to refresh your memory if necessary.

 Install C21, 1nF ceramic disk capacitor (marked 102).

 U4 is already installed.

 Install C24, 100uF electrolytic capacitor. Verify the polarity using the

Parts Layout Diagram.

 Install C22, 10uF electrolytic capacitor. Watch polarity!

 Install C25, 100uF electrolytic capacitor. Verify the polarity using the

Parts Layout Diagram.

 Install C23, 10uF electrolytic capacitor. Yes, check polarity before

installing.

 Install C26, 100nF ceramic disk capacitor (marked 104).

 Install R12, 2 ohm resistor (red-black-gold).

BATTERY WIRING

 Find the 4 inch Red and Black twisted pair (wire). Strip back the insulation

on both ends of each wire 3/16 of an inch from the ends. Tin the four

ends of the wire. Be careful not to use too much solder; use just enough

to hold the strands of wire together. Insert one end of the Red wire into

the BAT1 (+ ) pad and one end of the Black wire into the BAT1(-) pad.

You will find these pads on each side of C21.

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Ramsey Electronics AR2 Manual de instrucciones Pagina 18