Symptom Checklist - Atari 1025 Field Service Manual

SECTION
SIX
SYMPTOM
CHECKLIST
The
Symptom
Checklist
is
designed
to assist the
experienced
technician arrive
at a
rapid diagnosis
of 1025 problems.
The
checklist
is
not intended
to
replace the
Diagnostic
Flowchart
as the primary
troubleshooting guide
but
is
designed
to
supplement
it.
Symptom
Possible
Cause
Flowchart Entry
Point
POWER
LED
Does
Not
Light
LED,
Transformer, Ql,
or
CN9
D
LED
Lights But
Printer
Does
Not
Print
Q8, Q5, Q7, Q6, Transformer,
Print
Head,
or
Crystal
F
Printer
Does Not
Move
Across Paper
Print Head, Space Motor,
Q5, Q4,
TRA
1
G
Printer Doesn't
Line Feed
the Correct
Distance
Print Head, Line Feed
Motor,
Q5, Q3,
TRA2
I
Print
Head
Drops
Dots
Print
Head, Q2, Q3, Q4,
Q8,
TRA3,
TRA4
J
Characters Not
Correctly Shaped
Q7,
Q8
K
Atari 1025 Printer
Field Service Manual
6-1