North Star RAM-16-A Manual page 13

Assembly Information section for capacitor installation
procedures.
Capacitor
(O Cl
L,r C2
( C3
( . ) C4
( • • ) C5
( > • ' ) C6
Cll
R13. Insert and solder the following capacitors:
Capacitor
U T Cl
( , ) C8
(I ) ' ' , C9
( v ) / Cl2
( C13
(«4 C14
■'K14. Insert and solder the sixty .047uF ceramic disk capacitors
at the 60 locations marked on the layout legend with
asterisks.
R15. Save the remaining 33pF capacitor
applications.
/ details.
/'
.R16. Be sure the computer power is off and then insert the RAM-
' 16-A board into the computer motherboard.
power and check for the following voltages across each
indicated pair of capacitor leads:
Capacitor
( ) C5
( ) Cl
Turn off the computer power.
correct, then locate and correct the problem before
proceeding.
R17. Install the delay line module in the socket at location 5A.
Orient the delay line so that pin 1 (indicated by a dot or
" ' " "IN") is inserted in pin 1 of the socket.
Install the 28 TTL integrated circuits (all but the memory
IC's). Be careful to orient each IC so that pin 1 is
Value Location
2.2uF 0A
2.2uF 0A
6.8uF 0B
6.8uF 0B
6.8uF 0D
6.8uF 0D
6.8uF 8A
Value Location
. 0047uF 1A
10 0pF 1C
.0047uF 2A
47pF 2E
47pF 12E
47pF 12E
See the Special DMA Applications section for
Voltage
+5V ±5%
+$2V-$f%
If any of the voltages are not
North Star 16K RAM Board
Type
dipped mylar
dipped mica
dipped mylar
ceramic disk
ceramic disk
ceramic disk
(C10) for special DMA
Now turn on the
12