2J5
1-4-15
(6)
Defective message
displaying (LCD) [2].
No message appears
on the message dis-
play (LCD), even
thought the mes-
sage background
does not illuminate
faintly. (The power is
not supplied to the
operation panel
PWB.)
Broken power cord.
Replace the power cord.
The power cord is not
plugged in properly.
Check the contact between the printer’s AC inlet and the AC
power outlet.
No electricity at the AC
power outlet.
Measure the AC input voltage.
Defective power source
unit.
Replace the power source unit (See page P.1-5-29).
Defective harness between
operation panel PWB (YC1)
and main PWB (YC7), or
improper connector inser-
tion.
Reinsert the connector. Also check for continuity within the con-
nector harness. If none, remedy or replace the harness.
Defective operation panel
PWB.
Replace the operation panel PWB.
Defective main PWB.
Replace the main PWB (See page P.1-5-27).
(7)
"Close rear unit" dis-
play is not cancelled
to closing the rear
unit.
Defective fuser unit’s
drawer connector.
If a fuser unit which is known to work normally is available for
check, replace the current fuser unit in the printer with the normal
one. If the symptom disappears, replace the fuser unit with a new
one.
Defective harness between
engine PWB (YC506) and
fuser drawer connector, or
improper connector inser-
tion.
Reinsert the connector. Also check for continuity within the con-
nector harness. If none, remedy or replace the harness.
Defective engine PWB.
Replace the engine PWB (See page P.1-5-23).
(8)
"Close top cover" dis-
play is not cancelled
to closing the top
cover.
Deformed interlock switch's
actuator lever.
Check the bending of the actuator lever of the interlock switch, if
there is trouble, remedy or replace.
Defective power source
unit.
Replace the power source unit (See page P.1-5-29).
Defective engine PWB.
Replace the engine PWB (See page P.1-5-23).
(9)
"Close left side
cover" display is not
cancelled to closing
the left side cover.
Defective engine PWB.
Replace the engine PWB (See page P.1-5-23).
Problem
Causes
Check procedures/corrective measures
Содержание Ecosys FS-6970DN
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