Brother International HS-5300 Service Manual - Page 139

Brother International HS-5300 Manual

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(7) No paper supplied Possible cause HS-5000: Connection failure of connector P7. Step 1 Check Is (Are) the connector(s) P7 (and P8) on the driver PCB securely connected? Result NO Remedy Connect it (them) securely. HS-5300: Connection failure of connector P7 and P8. Paper pick-up 2 Disconnect connector P7 (and NO Replace the paper clutch solenoid. P8) from the driver PCB. pick-up clutch Measure the resistance solenoid. Driver circuit between the connector pins of YES Replace the driver the paper pick-up clutch solenoid PCB. with a circuit tester. Replace the Main Do the measured resistances PCB. satisfy the values in the table below? P7-1 and P7-2 Approx. 80 Q P8-1 and P8-2 P8-3 and P8-4 (8) Platen heater temperature is not controlled properly. Possible cause Harness connection failure Heater failure Thermistor failure Step 1 2 3 Check Is the connector P11 on the driver PCB securely connected? Remove connector P11 from the driver PCB. Measure the resistance between the connector pins of the heater (P11-2 and P11-3) with a circuit tester. Is it open circuit? Remove connector P11 from the driver PCB. Measure the resistance between the connector pins of the heater (P11-1 and P11-4) with a circuit tester. Is it open or short circuit? Result NO YES Remedy Connect it securely. Replace the Mplaten ASSY. YES Replace the Mplaten ASSY. IV-5

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(7)
No
paper
supplied
Possible
cause
Step
Check
Result
Remedy
HS
-5000:
Connection
failure
of
connector
P7.
HS
-5300:
Connection
failure
of
connector
P7
and
P8.
1
Is
(Are)
the
connector(s)
P7
(and
P8)
on
the
driver
PCB
securely
connected?
NO
Connect
it
(them)
securely.
Paper
pick-up
clutch
solenoid.
2
Disconnect
connector
P7
(and
P8)
from
the
driver
PCB.
Measure
the
resistance
between
the
connector
pins
of
the
paper
pick-up
clutch
solenoid
with
a
circuit
tester.
Do
the
measured
resistances
satisfy
the
values
in
the
table
below?
NO
Replace
the
paper
pick-up
clutch
solenoid.
Driver
circuit
YES
Replace
the
driver
PCB.
Replace
the
Main
PCB.
P7-1
and
P7-2
P8-1
and
P8-2
P8-3
and
P8-4
Approx.
80
Q
(8)
Platen
heater
temperature
is
not
controlled
properly.
Possible
cause
Step
Check
Result
Remedy
Harness
connection
failure
1
Is
the
connector
P11
on
the
driver
PCB
securely
connected?
NO
Connect
it
securely.
Heater
failure
2
Remove
connector
P11
from
the
driver
PCB.
Measure
the
resistance
between
the
connector
pins
of
the
heater
(P11-2
and
P11-3)
with
a
circuit
tester.
Is
it
open
circuit?
YES
Replace
the
M
-
platen
ASSY.
Thermistor
failure
3
Remove
connector
P11
from
the
driver
PCB.
Measure
the
resistance
between
the
connector
pins
of
the
heater
(P11-1
and
P11-4)
with
a
circuit
tester.
Is
it
open
or
short
circuit?
YES
Replace
the
M
-
platen
ASSY.
IV
-5