Brother International FAX-170 Service Manual - Page 154

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[ 5 ] Print-image related If the received or sent image has any problem, first make a copy with the facsimile equipment. If the copied image is normal, the problem may be due to the remote terminal; if it is abnormal, proceed to the following checks: Trouble (1) Completely blank At the scanner At the recorder (2) White vertical streaks At the scanner At the recorder Check: • Main PCB • Recording head harness • Compression springs beneath the recording head • Recording head • Main PCB • CIS unit • Recording head (3) All black At the scanner At the recorder • CIS harness • CIS unit • Main PCB • Recording head harness • Recording head • Main PCB (4) Black vertical streaks At the scanner At the recorder • CIS unit • Recording head (5) Light or dark At the scanner At the recorder • CIS unit • Main PCB • Compression springs beneath the recording head

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[
5
]
Print
-image
related
If
the
received
or
sent
image
has
any
problem,
first
make
a
copy
with
the
facsimile
equip-
ment.
If
the
copied
image
is
normal,
the
problem
may
be
due
to
the
remote
terminal;
if
it
is
abnor-
mal,
proceed
to
the
following
checks:
Trouble
Check:
(1)
Completely
blank
At
the
scanner
•
Main
PCB
At
the
recorder
•
Recording
head
harness
•
Compression
springs
beneath
the
recording
head
•
Recording
head
•
Main
PCB
(2)
White
vertical
streaks
At
the
scanner
•
CIS
unit
At
the
recorder
•
Recording
head
(3)
All
black
At
the
scanner
•
CIS
harness
•
CIS
unit
•
Main
PCB
At
the
recorder
•
Recording
head
harness
•
Recording
head
•
Main
PCB
(4)
Black
vertical
streaks
At
the
scanner
•
CIS
unit
At
the
recorder
•
Recording
head
(5)
Light
or
dark
At
the
scanner
•
CIS
unit
•
Main
PCB
At
the
recorder
•
Compression
springs
beneath
the
recording
head