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1
74HC109 [marked 74HC109] (U5)
1
CD4066DCN [marked CD4066] (U6)
1
DS1669 [marked DS1669] (U10)
1
7810 [marked 7810] (VR1)
1
7805 [marked 7805] (VR2)
1 MMBT3906 [marked 2A] (Q3) Preinstalled
2 LM4875M [marked LM4875M] (U11, 12) Preinstalled
1
MAX9708 [marked MAX9708] (U7) Preinstalled
MISCELLANEOUS
4
3 Pin Header (H1, 2, 4, 5)
1
2 Pin Header (H3)
2
RCA Jack (J1, 8)
4
3.5 mm Phone Jack (J2, 3, 4, 20)
1
2.1 mm Power Jack (J5)
2
10 Pin Dual In-Line Connector (J40, J7)
1
DPDT Push Button Switch (S1)
4
SPST Momentary Push Button Switch (S2, 4, 5, 6)
1
4 Pin Wire Locking Connector (T1)
5
Jumper Blocks
1
5" length of 18 gauge wire.
4
Ferrite bead filter SMT 805, 600 ohms@100MHz(L1, 2, 3, 4)
Preinstalled
HARDWARE
6 Beryllium Grounding Fingers
1 Push Button Cover
4 Knobs.
ASSEMBLY
We will begin with the main board oriented in the direction shown. Be sure not
to confuse the side of the board where the parts go. On the board you will see
the side that has white silk screen parts locations. This is the side where most
parts are mounted. We will begin with lower profile parts and work up to the
higher ones in each functional section. Don't use sockets for integrated
circuits (IC's).
In this day of miniaturization not all parts are made in the familiar through-hole
style packages (a part with leads that go through the circuit board and are
soldered on the board's back side). Some of these parts come in surface
mount or SMT packages (parts that are soldered on the same side of the
circuit board they mount on). An example of this is the MAX9708 Class D 40
watt audio amplifier IC (U7) used in this kit. Since SMT parts are normally
small they can be difficult or impossible to install by hand, so we have installed
UAM4SYS • 14
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