Brother International HL-3400CN Service Manual - Page 332

Brother International HL-3400CN - Color Laser Printer Manual

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APPENDIX After initializing all the data in the NV-RAM on the MCTL PWB, or replacing the MCTL PW B, all the original counter values for the cleaning roller, OPC belt cartridge, fusing unit, 120K kit and 240K kit should be re-entered as below; The method used to correct the counters is to reset the page counter to a calculated TOTAL PAGE value and then to perform a CLEAR CARE for the item to reset the NEXT CARE for that item to the value recorded in 2) iii). The basic formula used in these calculations is:- TOTAL PAGE = NEXT CARE - LIFE PERIOD Where this formula would result in a negative number, the LIFE PERIOD should be temporarily set to a lower value so that the result is a positive number and then this number and LIFE PERIOD used to perform the CLEAR CARE to reset the NEXT CARE counter. 4) Re-enter the FC ROLL (NC2) value as follows; i) Enter the value of NC2 - LP2 into the TOTAL PAGE counter. (i.e.) NC2 - LP2 = 12,050P - 12,000P = 50 Enter the value '50' in the TOTAL PAGE counter. ii) Perform CLEAR CARE 2. (Refer to '36 CLEAR CARE' in page V-24 of Chapter V.) iii) Check that the value of NEXT CARE is reset to the recorded value in 2) iii). (i.e.) NC2 = 12,050P 5) Re-enter the BL UNIT (NC7) value as follows; i) After calculating the values so that they work in the following formula (IY + IM + IC + IK) = NC7 - LP7, enter each value of LP7, IY, IM, IC, IK. (i.e.) (IY + IM + IC + IK) = NC7 - LP7 (348 + 353 + 365 + 439) = 49,135 - 50,000 Since the above result is minus, reduce the value of LP7 is 40,000P in order to make the result plus, then enter it into the LIFE PERIOD SET counter in FACTORY MODE. The formula is as follows; (IY + IM + IC + IK) = NC7 - LP7 (348 + 353 + 365 + 439) = 49,135 - 40,000 (348 + 353 + 365 + 439) = 9,135 Change the value of IK from 439 to 8,069 so that the formula works out. (348 + 353 + 365 + 8,069) = 9,135 Then, enter each value for IY=348, IM=353, IC=365, and IK=8,069 in the EACH IMAGE SET counter in FACTORY MODE. ii) Perform CLEAR CARE 7. (Refer to '36 CLEAR CARE' in page V-24 of Chapter V.) iii) Check that the value of NEXT CARE is reset correctly. (i.e.) NC7 = 49,135P iv) Reset the LIFE PERIOD counter in FACTORY MODE to 50,000. A-12

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APPENDIX
After
initializing
all
the
data
in
the
NV
-RAM
on
the
MCTL
PWB,
or
replacing
the
MCTL
PW
B,
all
the
original
counter
values
for
the
cleaning
roller,
OPC
belt
cartridge,
fusing
unit,
120K
kit
and
240K
kit
should
be
re-entered
as
below;
The
method
used
to
correct
the
counters
is
to
reset
the
page
counter
to
a
calculated
TOTAL
PAGE
value
and
then
to
perform
a
CLEAR
CARE
for
the
item
to
reset
the
NEXT
CARE
for
that
item
to
the
value
recorded
in
2)
iii).
The
basic
formula
used
in
these
calculations
is:
-
TOTAL
PAGE
=
NEXT
CARE
-
LIFE
PERIOD
Where
this
formula
would
result
in
a
negative
number,
the
LIFE
PERIOD
should
be
temporarily
set
to
a
lower
value
so
that
the
result
is
a
positive
number
and
then
this
number
and
LIFE
PERIOD
used
to
perform
the
CLEAR
CARE
to
reset
the
NEXT
CARE
counter.
4)
Re-enter
the
FC
ROLL
(NC2)
value
as
follows;
i)
Enter
the
value
of
NC2
-
LP2
into
the
TOTAL
PAGE
counter.
(i.e.)
NC2
-
LP2
=
12,050P
-
12,000P
=
50
Enter
the
value
'50'
in
the
TOTAL
PAGE
counter.
ii)
Perform
CLEAR
CARE
2.
(Refer
to
'36
CLEAR
CARE'
in
page
V-24
of
Chapter
V.)
iii)
Check
that
the
value
of
NEXT
CARE
is
reset
to
the
recorded
value
in
2)
iii).
(i.e.)
NC2
=
12,050P
5)
Re-enter
the
BL
UNIT
(NC7)
value
as
follows;
i)
After
calculating
the
values
so
that
they
work
in
the
following
formula
(IY
+
I
M
+
IC
+
IK)
=
NC7
-
LP7,
enter
each
value
of
LP7,
IY,
IM,
IC,
IK.
(i.e.)
(IY
+
IM
+
IC
+
IK)
=
NC7
-
LP7
(348
+
353
+
365
+
439)
=
49,135
-
50,000
Since
the
above
result
is
minus,
reduce
the
value
of
LP7
is
40,000P
in
order to
make
the
result
plus,
then
enter
it
into
the
LIFE
PERIOD
SET
counter
in
FACTORY
MODE.
The
formula
is
as
follows;
(IY
+
IM
+
IC
+
IK)
=
NC7
-
LP7
(348
+
353
+
365
+
439)
=
49,135
-
40,000
(348
+
353
+
365
+
439)
=
9,135
Change
the
value
of
IK
from
439
to
8,069
so
that
the
formula
works
out.
(348
+
353
+
365
+
8,069)
=
9,135
Then,
enter
each
value
for
IY=348,
I
M=353,
IC=365,
and
IK=8,069
in
the
EACH
IMAGE
SET
counter
in
FACTORY
MODE.
ii)
Perform
CLEAR
CARE
7.
(Refer
to
'36
CLEAR
CARE'
in
page
V-24
of
Chapter
V.)
iii)
Check
that
the
value
of
NEXT
CARE
is
reset
correctly.
(i.e.)
NC7
=
49,135P
iv)
Reset
the
LIFE
PERIOD
counter
in
FACTORY
MODE
to
50,000.
A-12