Brother DCP-1510 Service Manual page 68

4.4.1 4.4.11 1 Blac Black horizont
Image defects which appear periodically may be caused by failure of rollers. Refer to the Image defects which appear periodically may be caused by failure of rollers. Refer to the
table below and determine the responsible roller based on the pitch at which defects appear table below and determine the responsible roller based on the pitch at which defects appear
on the image. on the image.
D D e e v v e e l l o o p p e e r r r r o o l l l l e e r r
T T r r a a n n s s f f e e r r r r o o l l l l e e r r
E E x x p p o o s s u u r r e e d d r r u u m m
H H e e a a t t r r o o l l l l e e r r
P P r r e e s s s s u u r r e e r r o o l l l l e e r r
4.4.1 4.4.12 2 White ver White vertica
k horizontal stripes al stripes
<User Check> <User Check>
- - Clean the in Clean the inside of the mach
unit. unit.
- - This problem may disappear This problem may disappear after printing multiple s
- - Repla Replace the toner c
- - Repla Replace the drum u
S S t t e e p p C C a a u u s s e e
Dirt on electrodes of the drum unit Dirt on electrodes of the drum unit
1 1 and those of the machine and those of the machine
Dirt on electrodes of the toner Dirt on electrodes of the toner
2 2 cartridge and those of the machine cartridge and those of the machine
Attachment failure of the FG Attachment failure of the FG
3 3 harness or FG plate (not grounded harness or FG plate (not grounded
correctly) correctly)
4 4 S S c c r r a a t t c c h h o o r r d d i i r r t t o o n n t t h h e e h h e e a a t t u u n n i i t t
High voltage power supply PCB High voltage power supply PCB
5 5 failure failure
6 6 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
P P a a r r t t n n a a m m e e
tical streaks l streaks
<User Check> <User Check>
- - Check tha Check that there is no dust in the gap be
and the drum unit. and the drum unit.
- - Replac Replace the toner c
- - Check the u Check the usage environment of
hot-humid or cold-dry conditions can cause this problem. hot-humid or cold-dry conditions can cause this problem.
- - Check t Check that the p
- - Leave the mac Leave the machine for a whil
- - Repla Replace the drum un
S S t t e e p p C C a a u u s s e e
1 1 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
1-52 1-52
side of the machine and the coro ine and the corona wire of the drum
after printing multiple sheets of paper
ce the toner cartrid artridge with a new o ge with a new one.
ce the drum unit with a n nit with a new one. ew one.
Clean the electrodes of the drum unit and Clean the electrodes of the drum unit and
those of the machine. (Refer to those of the machine. (Refer to Fig. 1-7
Fig. 1-8 Fig. 1-8.) .)
Clean the electrodes of the toner cartridge Clean the electrodes of the toner cartridge
and those of the machine. (Refer to and those of the machine. (Refer to Fig. 1-7
and and Fig. 1-8 Fig.
Retighten the screws to secure the FG Retighten the screws to secure the FG
harness or FG plate. harness or FG plate.
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 . .
Replace the high voltage power supply PCB Replace the high voltage power supply PCB
ASSY. ASSY.
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 . .
D D i i a a m m e e t t e e r r
ø ø 1 1 3 3 m m m m
ø ø 1 1 3 3 m m m m
ø ø 2 2 4 4 m m m m
ø ø 2 2 5 5 m m m m
ø ø 2 2 5 5 m m m m
t there is no dust in the gap between the ton
e the toner cartrid artridge with a new o ge with a new one.
sage environment of the machine. U
hat the paper is aper is not damp not damp. .
hine for a while before prin e before printing again
ce the drum unit with a new it with a new one.
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 . .
na wire of the drum
heets of paper. .
ne.
R R e e m m e e d d y y
Fig.
1-8.) .)
Pitch at which defects Pitch at which defects
appear in the image appear in the image
2 2 6 6 . . 0 0 m m m m
3 3 8 8 . . 0 0 m m m m
7 7 5 5 . . 4 4 m m m m
7 7 8 8 . . 5 5 m m m m
7 7 8 8 . . 5 5 m m m m
tween the toner cartridg er cartridge e
ne.
the machine. Using the machine sing the machine in in
ting again. .
one.
R R e e m m e e d d y y
Confidential Confidential
1-7 and and
Fig. 1-7