Brother International FAX-170 Service Manual - Page 80

Unhook, power, supply, harness, here., Motor, Power, Cutter, sensor, Relay, Resistors, Electrolytic

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Page 80 highlights

(2) Attempt to lift up the main PCB slightly. If it is impossible to lift up the PCB to an extent which allows you to disconnect the harnesses, you may not have unhooked the power supply harness core or cutter HP sensor harness core from bosses "C" or "D," respectively. Remove the ROM cover (refer to Section 1.2) and unhook those cores from bosses "C" and "ID" illustrated below. Boss "C" (Unhook the power supply harness core from here.) Power supply harness Cutter HP sensor harness (Rear) L Motor harness 0 Main PCB CIS harness Electrolytic capacitor Boss "D" (Unhook the cutter HP sensor harness core from here.) Relay "F" Rib " Resistors Solenoid harness Recording PE sensor actuator head harness (3) Slightly lift up the rear edge of the main PCB and disconnect the following harnesses from the main PCB: • Cutter home position (HP) sensor harness (2-pin) • Main-panel harness (5-pin) • Main-mike harness (2-pin) • Speaker harness (2-pin) • Motor harness (6-pin) • Power supply harness (6-pin) • Solenoid harness (2-pin) • Recording head harness (12-pin) • CIS harness (7-pin) (4) Lift up the power supply PCB.

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(2)
Attempt
to
lift
up
the
main
PCB
slightly.
If
it
is
impossible
to
lift
up
the
PCB
to
an
extent
which
allows
you
to
disconnect
the
harnesses,
you
may
not
have
unhooked
the
power
supply
harness
core
or
cutter
HP
sensor
harness
core
from
bosses
"C"
or
"D,"
respec-
tively.
Remove
the
ROM
cover
(refer
to
Section
1.2)
and
unhook
those
cores
from
bosses
"C"
and
"ID"
illustrated
below.
Boss
"C"
(Unhook
the
power
supply
harness
core
from
here.)
Motor
harness
(
3
)
Power
supply
harness
(Rear)
Cutter
HP
sensor
harness
L
0
Relay
"F"
Rib
"
Resistors
Main
PCB
CIS
harness
Electrolytic
capacitor
Boss
"D"
(Unhook
the
cutter
HP
sensor
Solenoid
Recording
PE
sensor
actuator
harness
core
from
here.)
harness
head
harness
Slightly
lift
up
the
rear
edge
of
the
main
PCB
and
disconnect
the
following
harnesses
from
the
main
PCB:
•
Cutter
home
position
(HP)
sensor
harness
(2
-pin)
•
Main
-panel
harness
(5
-pin)
•
Main
-mike
harness
(2
-pin)
•
Speaker
harness
(2
-pin)
•
Motor
harness
(6
-pin)
•
Power
supply
harness
(6
-pin)
•
Solenoid
harness
(2
-pin)
•
Recording
head
harness
(12
-pin)
•
CIS
harness
(7
-pin)
(4)
Lift
up
the
power
supply
PCB.