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12
-IF
2E
5G
4F
4C
6B
6B
4G
7C
7A
7A
8F
8G
8G
BG
yellow-violet-brown
brown-black-red
brown-black-red
brown-black-red
orange-orange-brown
brown-black-red
brown-black-red
brown-black-red
brown-black-red
br<Dwn-black-red
brown-black-red
brown-black-red
brown-black-orange
brown-black-brown
brown-black-red
ohm
ohm
ohm
ohm
ohm
ohm
ohm
ohm
ohm
ohm
ohm
ohm
ohm
ohm
ohm
470
lK
lK
lK
330
lK
lK
lK
lK
lK
lK
lK
10K
100
lK
North Star Z80A PROCESSOR BOARD
solder the IN4148 diode at location 8G.
The end
de marked with a band is theca thode end and
oriented toward the top of the board.
d solder the 8MHz crystal at location IF.
Make
Ie bends in the two leads so the crystal will lie
parallel with the PC board.
To hold the crystal package in
place, use a piece of snipped resistor lead to solder the
top of t e crystal package to the corresponding hole in the
board.
~
little space should be left between the crystal
and the PC board to
avoi~
the possibility of shorts.
Insert and solder the l00uf electrolytic capacitor (C29)
located
ear 8A.
The positive end (marked with a "+" or a
red dot) should be oriented toward the right as indicated on
the layo t legend.
Some capacitors mark the negative end
with a " " instead of the p6sitive end.
Insert a1d solder the 39uf tantalum capacitor (C2l) near
location 7G.
Be sure to orient the capacitor so that the
lead mar ed with a
"+"
is inserted through the hole marked
wi th a
II,
" .
Z12. -Insert atd solder the two
6.
8uf tantalum capacitors (C22 and
C23) at
ocations 8F and 8G.
Be sure to orient the
capac ito s so that the lead marked with a
"+"
is inserted
through
he hole marked with a "+".
Insert atd solder the 470pf dipped mica capac i tor (Cl) -at
location IF.
Some 470pf capacitors are marked 1147lJO".
Insert atd solder the 33pf dipped mica capacitor (C5) at
location 2F.
Some 33pf capacitors are marked "330J03".
Insert
a~d
sOlder, the nineteen ceramic disc bypass
capac ito s in locations marked with an asterisk on the
layout 1 gend.
"t
~
Z14.
ZI6.
Z10.
, ) R2
J ()
"R3
( r'-RS'
( ) ,-R6
( ) "-R7 . , '
( )<Rgj
( )( R9-
~-"~i
"
,~'
( )
R
,L--- ( )
'R~")
( )Rl-'
( 'fBI
j
( l::-gJ
( ) '-Hl_
0
( ) , , ' Rl
7)
'{
() ,:Ri8)
L:""'~
~v'
Insert
of the
should
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