Brother International HL-3400CN Service Manual - Page 296
DCN14-10
UPC - 012502526223
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CHAPTER 8 TROUBLESHOOTING Error Code Concerned Part F4 Heater Fan (HTFAN) Confirm the connection of a heater fan connector. Is DCN14 of I0D1 properly connected with a connector of the heater fan ? Is DCN1 of I0D1 properly connected with 11CN of MCTL PCB ? v4NO Check the voltage (HTFANON-P _t-
CHAPTER
8
TROUBLESHOOTING
Error
Code
F4
Concerned
Part
Heater
Fan
(HTFAN)
Confirm
the
connection
of
a
heater
fan
connector.
Is
DCN14
of
I0D1
properly
connected
with
a
connector
of
the
heater
fan
?
Is
DCN1
of
I0D1
properly
connected
with
11CN
of
MCTL
PCB
?
4
v
NO
NO
Check
the
voltage
(HTFANON-P
_t
-
Connect
them
properly.
Is
F4
error
cleared
?
NO
<Is
the
voltage
between
DCN14-10
11
to
be
?›
YES
Replace
the
heater
fan.
and
a
rising
edge
vo
l
V
NO
_r
<Is
the
voltage
between
DCN1-35
and
44
to
be
a
rising
edge
?
>
YES
Replace
the
IOD1
PCB.
01
4
4
T
NO
Is
F4
error
?
N
Replace
the
MCTL
PCB.
cleared
A
YES
Job
is
complete.
MCTL
11CN
44
35
0
PGND
HTFAN0N-P
+24V-1
PGND
YES
A
Job
is
complete.
H
1OD1
DCN1
DCN14
44
10
35
11
12
DCN1
17
25
HTFAN
ON
-P
PGND
HTFANERR
Heater
Fan
HTFAN
8-38