Brother International MFC-7050C Service Manual - Page 33

precautions

Get Brother International MFC-7050C PDF manuals and user guides View all Brother International MFC-7050C manuals
Add to My Manuals
Save this manual to your list of manuals

Page 33 highlights

1. DISASSEMBLY/REASSEMBLY ■ Safety Precautions To prevent the creation of secondary problems by mishandling, observe the following precautions during maintenance work. (1) Unplug the power cord from the power outlet before replacing parts or units. When having access to the power supply, be sure to unplug the power cord from the power outlet. (2) Be careful not to lose screws, washers, or other parts removed for parts replacement. (3) When using soldering irons and other heat-generating tools, take care not to damage the resin parts such as wires, PCBs, and covers. (4) Before handling the PCBs, touch a metal portion of the equipment to discharge static electricity; otherwise, the electronic parts may be damaged due to the electricity charged in your body. (5) When transporting PCBs, be sure to wrap them in conductive sheets such as aluminum foil. (6) Be sure to reinsert self-tapping screws correctly, if removed. (7) Tighten screws to the torque values listed on the following pages. (8) When connecting or disconnecting cable connectors, hold the connector bodies not the cables. If the connector has a lock, always slide the connector lock to unlock it. (9) Before reassembly, apply the specified lubricant to the specified points. (Refer to Section 2 in this chapter.) (10) After repairs, check not only the repaired portion but also that the connectors and other related portions function properly before operation checks. (11) If you have loaded ink cartridges for operation checks, be sure to remove them from the carrier before transporting the facsimile equipment. The equipment has no carrier locking mechanism. Put the removed ink cartridges in a vinyl bag and seal it up in order to prevent their nozzles from drying up. (12) After finishing repairs and before sending the equipment back to the customer, be sure to initialize the ink dot counters (refer to Chapter V, Section 3.7). IV- 1

  • 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
1.
DISASSEMBLY/REASSEMBLY
■
Safety
Precautions
To
prevent
the
creation
of
secondary
problems
by
mishandling,
observe
the
following
precautions
during
maintenance
work.
(1)
Unplug
the
power
cord
from
the
power
outlet
before
replacing
parts
or
units.
When
having
access
to
the
power
supply,
be
sure
to
unplug
the
power
cord
from
the
power
outlet.
(2)
Be
careful
not
to
lose
screws,
washers,
or
other
parts
removed
for
parts
replacement.
(3)
When
using
soldering
irons
and
other
heat
-generating
tools,
take
care
not
to
damage
the
resin
parts
such
as
wires,
PCBs,
and
covers.
(4)
Before
handling
the
PCBs,
touch
a
metal
portion
of
the
equipment
to
discharge
static
electricity;
otherwise,
the
electronic
parts
may
be
damaged
due
to
the
electricity
charged
in
your
body.
(5)
When
transporting
PCBs,
be
sure
to
wrap
them
in
conductive
sheets
such
as
aluminum
foil.
(6)
Be
sure
to
reinsert
self
-tapping
screws
correctly,
if
removed.
(7)
Tighten
screws
to
the
torque
values
listed
on
the
following
pages.
(8)
When
connecting
or
disconnecting
cable
connectors,
hold
the
connector
bodies
not
the
cables.
If
the
connector
has
a
lock,
always
slide
the
connector
lock
to
unlock
it.
(9)
Before
reassembly,
apply
the
specified
lubricant
to
the
specified
points.
(Refer
to
Section
2
in
this
chapter.)
(10)
After
repairs,
check
not
only
the
repaired
portion
but
also
that
the
connectors
and
other
related
portions
function
properly
before
operation
checks.
(11)
If
you
have
loaded
ink
cartridges
for
operation
checks,
be
sure
to
remove
them
from
the
carrier
before
transporting
the
facsimile
equipment.
The
equipment
has
no
carrier
locking
mechanism.
Put
the
removed
ink
cartridges
in
a
vinyl
bag
and
seal
it
up
in
order
to
prevent
their
nozzles
from
drying
up.
(12)
After
finishing
repairs
and
before
sending
the
equipment
back
to
the
customer,
be
sure
to
initialize
the
ink
dot
counters
(refer
to
Chapter
V,
Section
3.7).
IV-
1