Brother International HS-5300 Service Manual - Page 140

Brother International HS-5300 Manual

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(9) Pre-platen heater temperature is not controlled properly. Possible cause Harness connection failure Heater failure Thermistor failure Step , Check _ Result , Remedy 1 Is the connector P10 on the NO Connect it securely. driver PCB securely connected? 2 Remove connector P10 from YES Replace the M-platen the driver PCB. ASSY. Measure the resistance between the connector pins of the heater (P10-2 and P10-3) with a circuit tester. Is it open circuit? 3 Remove connector P10 from YES Replace the M-platen the driver PCB. ASSY. Measure the resistance between the connector pins of the heater (P10-1 and P10-4) with a circuit tester. Is it open or short circuit? IV-6

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(9)
Pre
-platen
heater
temperature
is
not
controlled
properly.
Possible
cause
Step
,
Check
Result
,
Remedy
Harness
connection
failure
1
_
Is
the
connector
P10
on
the
driver
PCB
securely
connected?
NO
Connect
it
securely.
Heater
failure
2
Remove
connector
P10
from
the
driver
PCB.
Measure
the
resistance
between
the
connector
pins
of
the
heater
(P10-2
and
P10-3)
with
a
circuit
tester.
Is
it
open
circuit?
YES
Replace
the
M
-platen
ASSY.
Thermistor
failure
3
Remove
connector
P10
from
the
driver
PCB.
Measure
the
resistance
between
the
connector
pins
of
the
heater
(P10-1
and
P10-4)
with
a
circuit
tester.
Is
it
open
or short
circuit?
YES
Replace
the
M
-platen
ASSY.
IV
-6