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4.8
4.8 T T roub
roubles
leshoo
hooting
4. 4.8. 8.1 1 Fu
Fuse
ser un
r unit fa
it failu
ilure re
S S t t e e p p
Connection failure of the
Connection failure of the
1 1
center thermistor harness
center thermistor harness
Connection failure of the side
Connection failure of the side
2 2
thermistor harness
thermistor harness
Connection failure of the
Connection failure of the
3 3
heater harness
heater harness
Connection failure of the eject
Connection failure of the eject
4 4
sensor PCB harness
sensor PCB harness
5 5
E E j j e e c c t t s s e e n n s s o o r r P P C C B B f f a a i i l l u u r r e e
Low-voltage power supply
Low-voltage power supply
6 6
PCB failure
PCB failure
7 7
F F u u s s e e r r u u n n i i t t f f a a i i l l u u r r e e
8 8
M M a a i i n n P P C C B B f f a a i i l l u u r r e e
Note:
Note:
• • Turn the po
Turn the power swit
wer switch OFF and then ON agai
This problem may then be cleared.
This problem may then be cleared.
• • The machine may reco
The machine may recover from the error
for service personnel is started. However, conducting this operation while the heater has
for service personnel is started.
not yet cooled may cause the fuser unit to melt. Be careful.
not yet cooled may cause the fuser unit to melt. Be careful.
4.9
4.9 T T roub
roubles
leshoo
hootin
4.9.1 .1 Las
4.9
Laser er uni
unit t fai
failur
lure e
<User Check>
<User Check>
• • Turn ON th
Turn ON the power switc
e power switch, then open the front cov
for a while to remove condensation.
for a while to remove condensation.
S S t t e e p p
1 1
L L a a s s e e r r u u n n i i t t a a t t t t a a c c h h m m e e n n t t f f a a i i l l u u r r e e
Connection failure of the laser
Connection failure of the laser
2 2
unit flat cable
unit flat cable
Connection failure of the
Connection failure of the
3 3
polygon motor harness
polygon motor harness
4 4
L L a a s s e e r r u u n n i i t t f f a a i i l l u u r r e e
5 5
M M a a i i n n P P C C B B f f a a i i l l u u r r e e
ting for
for Fus
Fuser er Uni
Unit P
C C a a u u s s e e
ASSY. .
ASSY
ch OFF and then ON again. Leave the mac
ver from the error, when the test printing of the mainte
, when the test printing of the maintenance mode
However, conducting this operation while the heater has
ting f
g for
or Lase
Laser U
r Unit
h, then open the front cover and the back cover
C C a a u u s s e e
t Probl
roblems
ems
R R e e m m e e d d y y
Reconnect the center thermistor harness.
Reconnect the center thermistor harness.
Reconnect the side thermistor harness.
Reconnect the side thermistor harness.
Reconnect the heater harness.
Reconnect the heater harness.
Reconnect the eject sensor PCB harness.
Reconnect the eject sensor PCB harness.
R R e e p p l l a a c c e e t t h h e e e e j j e e c c t t s s e e n n s s o o r r P P C C B B A A S S S S Y Y . .
Replace the low-voltage power supply PCB
Replace the low-voltage power supply PCB
R R e e p p l l a a c c e e t t h h e e f f u u s s e e r r u u n n i i t t . .
R R e e p p l l a a c c e e t t h h e e m m a a i i n n P P C C B B A A S S S S Y Y . .
n. Leave the machine for 15 minu
hine for 15 minutes.
nit Pro
Proble
blems
ms
er and the back cover. Leave the machi
R R e e m m e e d d y y
R R e e a a t t t t a a c c h h t t h h e e l l a a s s e e r r u u n n i i t t . .
Reconnect the laser unit flat cable.
Reconnect the laser unit flat cable.
Reconnect the polygon motor harness.
Reconnect the polygon motor harness.
R R e e p p l l a a c c e e t t h h e e l l a a s s e e r r u u n n i i t t . .
R R e e p p l l a a c c e e t t h h e e m m a a i i n n P P C C B B A A S S S S Y Y . .
tes.
nance mode
. Leave the machine
ne
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