NorthStar HORIZON Manual page 29

use S-100 PC boards that require use of these lines, then
each line must be cut from the ground plane on the component
side at each of the 12 connector pin locations for that line
before the edge connectors are installed. Some memory
boards which include a "protect" feature use bus line 70,
for example.
M8. Insert and solder the nine 1/4" quick-connect lugs into the
row of nine positions near location 10. Solder the pins on
both sides of the board for rigidity, and be sure each lug
is vertical.
M9. Similarly insert and solder the two 3/16" quick-connect lugs
at the front of the motherboard in the positions labeled LED
and GNO.
1110.
Insert and so IdE r the following thirteen resistors.
Follow
the procedure dE'scr ibed in the Assembl y Information section.
Resistor Loca tion Value
Size Color-code
Rl 58 2.2K 1/4W red-red-red
R2 68 1. 2K 1/4W
brn-red-red
R3 6C
1. 2K 1/4W brn-red-red
)
R4 10A
1. 2K 1/4W brn-red-red
) *Rll
3C
4.7K 1/4W yel-vio-red
)
R14 38 5.6K
1/4W
grn-blu-red
)
R15 10 lK
1/21, brn-blk-red
)
R16 next to Rl7 560 1/4W
qrn-blu-brn
)
Rl7
10 220
1/4W red-red-brn
)
R30 5B
2.2K 1/4W red-red-red
)
R31
Front 330 2W
org-org-brn
)
R32 Front 330 2W
org-org-brn
)
R33
Front 100
2"
brn-blk-brn
)
R34 Front
220
1/4W red-red-brn
* Rll is installed between the hole to the left of the "RII"
label on the layout leqend and the hole to the right of the
"C24" label. The hole in the middle is not used.
MIL Insert and solder the following 6 tantalum capacitors, being
careful to match the
+
lead of the capacitor to the
+
lead
hole on the motherboard:
Capacitor Location Val ue
(
Cl IB
2.2uf
(
C2 IB
2.2uf
(
C3
Heat sink area 6.8uf
(
C4 18
2.2uf
(
C7 Heat sink area 6.8uf
(
C10 Heat sink area 6.8uf
29 North Star HORIZON Computer