Atari 800

3Q0
COLOR
BAR
TROUBL£SHOOTING
(cont:
Is there
signal
at both
ends of LZQ2
Refer Figure
-
YES
Are
the following
present
Refer
Figure
+5
on Modulator,
Pin
S
Signal
on
Modulator,
Pins
2 and
4
YES
Does
screen look
like
Figure
3-4
NO
NO
Trace
circuit
back to
previous
step
NO
Trace
circuit
back to
previous
step
Verify
Power
Supply
volUge
at
Pin 19
of
JUS
Y^5_
Go to
TIA.
Page
7-13
CaU ATARI
Te^h Line
Specialist
Inside
California
(800) 672-1466
Outside
California
(800) 538-1535
(300) 538-1536
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