Error
Description
Diagnostic Action
No Printing
7.
Check for a meter deflection from an Up
r
level (approximately
+5
Vdc)
to
a Down
level (approximately 0 Vdc) on pin CN6-l9
on
the
Driver Circuit card (see Section 5,
"Locations")
while applying slight pressure
to
print head - do
not
advance the print
head
to
the
next
detented position. Use
the
Driver Circuit card ground pin for
common.
Is
there an Up level
to
a Down level
deflection?
YES:
Go
to
step 8.
NO:
Is
there a constant Up level?
YES:
Replace Print Mechanism
assembly. (See Section 3,
~
"Removal/Replacement.
")
NO:
Check for
+5
Vdc at CN5-18
(see Section 5, "Locations").
+5
Vdc?
YES:
Replace Print Mechanism
assembly (see Section 3,
"Removal/
Replacement").
NO: Go
to
page 1400-6,
"Power
Supply Check."
~
•
1400-13
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