(
(
Symptom Isolation Aid
Not printing some dots (on print plot All diagnostics run OK.
only).
Forms feeding fails
to
stop on 050 None.
error.
Missing dots, or extra dots printed. The 5103 may add or drop a
complete vertical line
for
a character
and have no error halts.
Fix
Replace print head.
Repair bouncing
EOF
switch
or
adjust
EOF
switch.
Replace
F2
card in the 5100.
Solid 052 errors. Copy display fails. Replace
F2
card
in
the Sioo.
Print misalignment vertically.
051
errors.
Intermittent or solid 052 errors.
When running MOl 800, the second
or third line
of
Hs are misaligned
vertically.
Check
for
binds or replace the ribbon
drive roll assembly.
Check
for
voltages dropping when the Replace
C2, C3,
or
C4
capacitors.
error occurs.
Probe the signal on the printer
adapter card pin C5J 13.
It
should
be
pulsing.
Replace the
A2
card
or
cable
in
the
5100.
Failure
to
print or 057 errors occur Check
for
+5 volts at TP-V5. Replace shorted emitter board.
when trying
to
power up a 5100 APL
machine with the 5103 printer turned
on.
Left margin varies.
Intermittent 056 errors.
057 errors or wavy print.
052 errors.
Carrier belt
not
tracking correctly.
Paper jams.
Print plot has misaligned dots.
Printer recently changed from
an
80
characters per second
to
a 120
characters per second machine.
Fails when printing right
to
left past
position 100.
Print head does
not
move smoothly.
Check
'forms
emitter
A'
line at pin
V07 and
'forms
emitter
B'
line at pin
S12. Both lines should be pulsing
when the printer is spacing paper.
Belt is improperly adjusted.
Not a new style printer with the
ON/OFF
switch on the front.
None.
Ensure that the H2 card is part
1607126.
Repair print head cable.
Replace print emitter board.
Replace forms emitter stepper
motor
assembly.
Move print head
to
the right margin
and adjust the carrier belt.
Check
for
bent pins on the tractor
assembly. Check
to
see
the ECA
11
(EC
812672) is installed.
Use paper with a thickness
of
0.0030
to
0.0075 inches (0.075
to
0.188
mm).
Intermittent
Failures Troubleshooting Guide 3-105
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