Ramsey Electronics UAM4SYS Assembly And Instruction Manual page 19

you remembered to check polarity!
7. Install C35, a 1uF electrolytic capacitor (marked 1uF).
8. Install C36, the last 1uF electrolytic capacitor it this circuit (marked
1uF).
9. Install C33, a 100uF electrolytic capacitor (marked 100uF).
10. Install C34, the last 100uF electrolytic capacitor it this circuit (marked
100uF).
11. Install J20, the last 3.5mm stereo phone jack.
M. MUTE CIRCUIT
1. Install R22, a 2.2K ohm resistor (marked Red, Red, Red).
2. Install R21, another 2.2K ohm resistor (marked Red, Red, Red).
3. Install R37, the last 2.2K ohm resistor in this circuit (marked Red, Red,
Red).
4. Install U5, a 74HC109 dual JK flip-flop IC (marked 74HC109). Install
this IC like you did U1, U3, and U10.
5. Install C24, a 0.1uF ceramic capacitor (marked 104).
6. Install C23, a 0.22uF ceramic capacitor (marked 224).
7. Install C44, the last 0.1uF ceramic capacitor in this circuit (marked
104).
L. LOUDNESS CIRCUIT
1. Install R27, a 2.2K ohm resistor (marked Red, Red, Red).
2. Install R38, another 2.2K ohm resistor (marked Red, Red, Red).
3. Install R28, the last 2.2K ohm resistor in this circuit (marked Red, Red,
Red).
4. Install U6, a CD4066 analog switch IC (marked CD4066). Install this
like you did the other IC's.
5. Install C41, a 0.1uF ceramic capacitor (marked 104).
6. Install C31, another 0.1uF ceramic capacitor (marked 104).
7. Install C32, the last 0.22uF ceramic capacitor (marked 224).
UAM4SYS • 19