Brother International DCP1000 Service Manual - Page 70

Laser, Toner, Sensor

Get Brother International DCP1000 - DCP 1000 B/W Laser PDF manuals and user guides
UPC - 012502565796
View all Brother International DCP1000 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 70 highlights

4.1.13 Laser Unit and Toner Sensor PCB (1) Disconnect the polygon motor flat cable, toner sensor harness, and laser diode harness from the main PCB. (2) Remove the three screws from the laser unit. (3) Lift up the laser unit. NOTE: When handling the laser unit, take care not to touch the inside of the unit, glass, or mirror. NOTE: On the small PCB at the right side of the laser unit is a 2-pin connector which is for the adjustment in the factory. Do not disturb it. Taptite, bind B M4x12 Laser unit Toner sensor harness Polygon motor flat cable Laser diode harness Sponge A Main cover 0 I=I = 0 O O ' Main PCB = DI=1 2)0 O Polygon motor connector Laser diode connector Toner sensor connector ■ Reassembling Notes • When replacing the laser unit with a new one, be sure to attach a ferrite core to the laser diode harness of the new laser unit. Wind the harness around the ferrite core by two turns as shown above, just like the laser diode harness of the old laser unit. • On the underside of the laser unit, route the laser diode harness, polygon motor flat cable, and toner sensor harness as illustrated in Subsection 4.1.25, "Harness routing G." • Before putting the laser unit back into place, check for any toner particles, paper dust or dirt, and clean them out. • Make sure that the sponge is placed below the laser unit. 4-42

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
  • 127
  • 128
  • 129
  • 130
  • 131
  • 132
  • 133
  • 134
  • 135
  • 136
  • 137
  • 138
  • 139
  • 140
  • 141
  • 142
  • 143
  • 144
  • 145
  • 146
  • 147
  • 148
  • 149
  • 150
  • 151
  • 152
  • 153
  • 154
  • 155
  • 156
  • 157
  • 158
  • 159
  • 160
  • 161
  • 162
  • 163
  • 164
  • 165
  • 166
  • 167
  • 168
  • 169
  • 170
  • 171
  • 172
  • 173
  • 174
  • 175
  • 176
  • 177
  • 178
  • 179
  • 180
  • 181
  • 182
  • 183
  • 184
  • 185
  • 186
  • 187
  • 188
  • 189
  • 190
  • 191
  • 192
  • 193
  • 194
  • 195
  • 196
  • 197
  • 198
  • 199
  • 200
  • 201
  • 202
  • 203
  • 204
4.1.13
Laser
Unit
and
Toner
Sensor
PCB
(1)
Disconnect
the
polygon
motor
fl
at
cable,
toner
sensor
harness,
and
laser
diode
harness
from
the
main
PCB.
(2)
Remove
the
three
screws
from
the
laser
unit.
(3)
Lift
up
the
laser
unit.
NOTE:
When
handling
the
laser
unit,
take
care
not
to
touch
the
inside
of
the
unit,
glass,
or
mirror.
NOTE:
On
the
small
PCB
at
the
right
side
of
the
laser
unit
is
a
2
-pin
connector
which
is
for
the
adjustment
in
the
factory.
Do
not
disturb
it.
Taptite,
bind
B
M4x12
Laser
unit
Toner
sensor
harness
Sponge
Polygon
motor
fl
at
cable
Laser
diode
harness
A
Main
cover
Main
PCB
O
I=I
=
0
0
O
'
2)0
Laser
diode
connector
=
DI=1
Polygon
motor
connector
O
Toner
sensor
connector
■
Reassembling
Notes
•
When
replacing
the
laser
unit
with
a
new
one, be
sure
to
attach
a
ferrite
core
to
the
laser
diode
harness
of
the
new
laser
unit.
Wind
the
harness
around
the
ferrite
core
by
two
turns
as
shown
above,
just
like
the
laser
diode
harness
of
the
old
laser
unit.
•
On
the
underside
of
the
laser
unit,
route
the
laser
diode
harness,
polygon
motor
fl
at
cable,
and
toner
sensor
harness
as
illustrated
in
Subsection
4.1.25,
"Harness
routing
G."
•
Before
putting
the
laser
unit
back
into
place,
check
for
any
toner
particles,
paper
dust
or
dirt,
and
clean
them
out.
•
Make
sure
that
the
sponge
is
placed
below
the
laser
unit.
4-42