Ramsey Electronics UAM4SYS Assembly And Instruction Manual page 17

Universal audio amplifier system
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15. Install J3, the last 3.5mm stereo phone jack in this section.
LOB. LINE OUTPUT BUFFER CIRCUIT
1. Install R33, a 1K ohm resistor (marked Brown, Black, Red).
2. Install R32, another 1K ohm resistor (marked Brown, Black, Red).
3. Install R4, a 1M ohm resistor (marked Brown, Black, Green).
4. Install R30, the last 1M ohm resistor (marked Brown, Black, Green).
5. Install C46, a 0.1uF ceramic capacitor (marked 104).
6. Install H1 a 3 pin header. Solder one pin first, make sure the header is
flush and square to the board before soldering the last two pins.
7. Install H2 another 3 pin header. Install this part just like H1.
8. Install C14, a 10uF electrolytic capacitor (marked 10uF). Remember to
watch polarity!
9. Install C13, yet one more 10uF electrolytic capacitor (marked 10uF).
10. Install C17, another 10uF electrolytic capacitor (marked 10uF).
11. Install C30, the last 10uF electrolytic capacitor in this section (marked
10uF).
12. Install J8, an RCA jack. Make sure this jack is flush and square
before soldering.
13. Install J1, another RCA jack. Installed just like J8.
TVB. TONE/VOLUME/BALANCE CIRCUIT
1. Install R5, a 47K ohm resistor (marked Yellow, Violet, Orange).
2. Install R8, another 47K ohm resistor (marked Yellow, Violet, Orange).
3. Install R6, that's right another 47K ohm resistor (marked Yellow, Violet,
Orange).
4. Install R13, the last 47K ohm resistor (marked Yellow, Violet, Orange).
5. Install U3, a LM1036N tone control IC (marked LM1036N). Before
soldering make absolutely sure that you have installed all 20 pins through
the appropriate holes. Verify that the notch or dot indicating pin one is
facing the same direction shown in the parts layout diagram or the circuit
board's silk screen. Solder two pins in opposite corners of the IC. Make
sure the IC is flat and square to the board. If not, reheat one pin at a time
UAM4SYS • 17

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