home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Tech Arsenal 1
/
Tech Arsenal (Arsenal Computer).ISO
/
tek-20
/
radiomd2.zip
/
PK87.8
< prev
next >
Wrap
Text File
|
1990-09-05
|
806b
|
21 lines
PK87.8
On the underside of the board link the through hole on the track that
has just be cut to pin 11 of U 20, see Fig 2.
____________ Bottom side of board
_________ \ at top end of U 5 (8530A)
\ o
Connect -> =====\ o /=
this hole ==O \==============/
to pin 11 ___________
of U 20 ______/ _________ \___
_______/ _______ \____
________/ ___ \_____ nd put it
in the position marked C 5. Put the 220pF capacitor in the position marked
C 3 and change the crystal to the 4.9152MHz crystal. On the top side of the
board between U 5 and U 14 (8530A and 7910) a thin track passes under R 12,
cut this track, see Fig 3.
continued in file pk87.4