Atari 800

KEYBOARD
(cont)
Troubleshoot,
using
following
information
and Keyboard
schematie.
Page 7-38
TYPICAL
KEYBOARD
OUTPUT
Sample
oade from
Z104. Pin
14
with
W
key depressed.
SCOPS:
rT7/DIV..5mS/DIV
SYNC:
CSX.
-t-
Trigger
TYPICAL
DECODER
OUTPUT
Sample
made from
Z104.
Pin
3 with
W
Icey
depressed
SCOPE;
rr7/DIV.
.2mS/DIV
SYNC :
CfSl,
••
Trigger
Pass
j^ZS.
Go
to
TONE
TEST
!
Page
7-24
i
MO
Call
ATARI
Tech
Une
Specialist
Inside
California
(800) 672-1466
Outside
California
(800)
538-1535
(800)
538-1536
ATARI
Home
Computer
7-23