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Insert and solder the two 74LS00s at locations
27.
( )
U29 and U46 as shown on the Assembly Diagram.
Insert and solder the one 74LS32 at location U30
( )
28.
as shown on the Assembly Diagram.
Insert and solder the one 74LS153 at location U31
( )
29.
as shown on the Assembly Diagram.
Insert and solder the two 74LS293s at locations
( )
30.
U32 and U33 as shown on the Assembly Diagram.
Insert and solder the one 8T20 at location U34
( )
31.
as shown on the Assembly Diagram.
Insert and solder the one 74LS74 at location
( )
32.
U36 as shown on the Assembly Diagram.
Insert and solder the one 74LS51 at location U38
( )
33.
as shown on the Assembly Diagram.
Insert and solder the two 74123s at locations U39
( )
34.
and U48 as shown on the Assembly Diagram.
Insert and solder the 40 pin solder tail socket
( )
35.
at location U7 as shown on the Assembly Diagram.
DISCRETE COMPONENT INSTALLATION
Insert and solder the seventeen .luF disk capa
( )
36.
citors at locations C2 through C5 and C8 through
C20 as shown on the Assembly Diagram.
( )
37.
Insert and solder the 33uF tantalum capacitor at
location Cl as shown on the Assembly Diagram.
NOTE: Observe polarity (+ to +) as shown on the
board.
( )
38.
Insert and solder the two .02UF capacitors at
locations C6 sind C7 as shown on the Assembly
Diagram.
Insert and solder the 1N914 diode at location
( )
39.
CR3 as shown on the Assembly Diagram.
( )
40.
Insert and solder the 1N4742 zener diode at loca
tion CRl as shown on the Assembly Diagram.
( )
41
Insert and solder the 1N751 zener diode at loca
tion CR2 as shown on the Assembly Diagram.
( )
42.
Insert and solder the 2N3906 transistor at loca
tion Ql as shown on the Assembly Diagram.
Assembly Instructions
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