UAM4SYS
•
14
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
Содержание UAM4SYS
Страница 38: ...UAM4SYS 38 RIGHT LINE OUT LEFT LINE OUT REC RIGHT REC LEFT Schematic Sheet 1 4 Input Processing...
Страница 39: ...UAM4SYS 39 Schematic Sheet 2 4 Control and Headphone Amps...
Страница 40: ...UAM4SYS 40 4 3 RED UAM4SYS_Rev3_4 4 sheets SCH Schematic Sheet 3 4 Front Panel...
Страница 41: ...UAM4SYS 41 Schematic Sheet 4 4 Power Amp Parts high lighted in grey Pre Installed not shown on Parts layout...
Страница 42: ...UAM4SYS 42 Parts Layout...