Lexmark 4079 colorjet printer plus Service Manual - Page 75
Lexmark 4079 colorjet printer plus Manual
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Head Cap Position 006 Make sure all ink lines are connected. - With the purge assembly removed and laying on its side, check the voltage on the contact straps. Voltage should be +5 V with the contacts open. As the contacts close, the voltage should drop to 0 V. Is the voltage correct? Yes No 007 Check continuity on the connector cable between the logic board and the purge sensor. (See page 4-2 for connector location.) Is continuity correct? Yes No 008 Replace the cables as needed. 009 Replace the logic board. 0101 Install the purge assembly and end the call. Diagnostic Information 2-55
Head
Cap
Position
006
Make
sure
al
l
ink
lines
are
connected.
—
With
the
purge
assembly
removed
and
laying
on
its
side,
check
the
voltage
on
the
contact
straps.
Voltage
should
be
+5
V
with
the
contacts
open.
As
the
contacts
close,
the
voltage
should
drop
to
0
V.
Is
the
voltage
correct?
Yes
No
007
Check
continuity
on
the
connector
cable
between
the
logic
board
and
the
purge
sensor.
(See
page
4-2
for
connector
location.)
Is
continuity
correct?
Yes
No
008
Replace
the
cables
as
needed.
009
Replace
the
logic
board.
0101
Instal
l
the
purge
assembly
and
end
the
call.
Diagnostic
Information
2-55