Ramsey Electronics UAM4 Manual page 12

10. Install 0.47uF capacitor C9 located near the middle lower edge of U1.
11. Install 0.01uF capacitor C8 near lower left edge of U1.
Next we'll install the other small surface mount components. Unlike the
capacitors the value is marked on them.
12. Install the MMBT3906 PNP transistor Q1 (marked 2A) located to the
right of C6.
13. Install 1K resistor R2 (marked 102) located to the left and above Q1.
14. Install 1K resistor R3 (marked 102) located to the left and above Q1.
15. Install 1K resistor R7 (marked 102) near the left center edge of the
board near the pattern for J5.
16. Install 10K resistor R5 (marked 103) near lower right corner of the
board.
17. Install 10K resistor R6 (marked 103) near lower right corner of the
board.
18. Install 10K resistor R1 (marked 103) located below Q1 on the left of
the board.
19. Install 10K resistor R4 (marked 103) located between and above the
patterns for J1 and J2 on the lower edge of the board.
20. Install the 7.5 volt zener diode D2 (marked 7.5M) on the left edge of
the board below the pattern for J5.
Now would be a good time to take a few moments and check over your work.
Check that all components are placed properly and there are no solder
bridges between components and traces.
The last of the surface mount components will now be installed. These
capacitors are electrolytic, so they must be installed in the correct orientation.
You will notice that there is a band or mark on one end of the capacitors. This
indicates the '+' side and must be installed on the board toward the '+'
indication on the board. These are large components and will be a cinch to
install now that you're an expert!
21. Install 10uF capacitor C12 near the left edge of the board (marked
106).
22. Install 10uF capacitor C17 (marked 106) near R7 on the left of the
board.
UAM4• 12