Atari 1025 Field Service Manual page 64

PRINT FAILURE
o
Does
the
c
TR3
= +3.
(labeled
5'
schema
tollector of
5
to
5.3V
VD
on the
tic)?
Yes
Is
there a
5V
p-p output
signal at pin 30 of Q8?
Yes
Does
the output
wave-
form
for
RESET
on
pin
9 of
Q8
look
like
the
adjacent
illustration?
No
Is
there a
5V
p-p signal at
pin 21 of
Q5?
Yes
Are
there
5V
p-p output
signals at pins
25-28 on
Q5?
Yes
Does
the carriage
home
correctly
at
power-on?
Yes
No
No
Yes
No
Nol
No
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Field Service Manual