Panasonic KX-MB2230JT, Service Manual

Page: 87 / 526

87
KX-MB2230JT/ KX-MB2270JT/ KX-MB2515JT/ KX-MB2545JT/ KX-MB2575JT/ DP-MB310JT
The fuser and de
v
eloper
star
t w
o
rking.
The temper
ature
control star
ts w
o
rking.
Detection
6
Chec
ks the temper
ature of 235
℃
or abo
v
e
.
(The detection tak
es place e
v
er
y 10 msec.)
Detection
7
Chec
ks the shor
t of the ther
mistor (AD:
0).
(The detection tak
es place e
v
er
y 10 msec.)
Detection
8
When the unit can not be controlled b
y
the softw
are
, it should be stopped f
orcib
ly
b
y
the hardw
are(ASIC).
(250
℃
)
Detection
9
Ther
mostat temper
ature reached 160
℃
.
P
aper is pic
k
ed up
.
Detection
j
When the unit can not be controlled b
y
the softw
are
,it should be stopped f
orcib
ly
b
y
the hardw
are(compar
ator).(240
℃
)
The usual fixing temper
ature is 195
℃
.
But in case of "Half speed mode" (e
xclude special paper :
Thic
k paper / En
v
elope / Card stoc
k etc...), the fixing temper
ature
ma
y do
wn to 170
℃
.
When one of the f
ollo
wings happened, processing glitches are e
x
ecuted and unit goes
to "CALL SER
VICE 3".
[Lo
w temper
ature detection]
Detection
1
: The AD v
alue of the temper
ature does not go up 4 or more in 10 sec.
after the heater is tur
ned ON.
Detection
2
: The temper
ature does not reach pr
imar
y stab
le temper
ature (170
℃
)
within 50sec after the heater is tur
ned ON.
Detection
3
: The temper
ature does not reach the secondar
y stab
le temper
ature
(170
℃/
195
℃
) within 75sec from pr
imar
y stab
le temper
ature (170
℃
).
Detection
4
: The temper
ature decreased 60deg (110
℃
/135
℃
) or more b
y
the temper
ature
control after reaching the secondar
y stab
le temper
ature (170
℃/
195
℃
).
Detection
5
: The temper
ature does not reach the pr
imar
y stab
le temper
ature (170
℃
)
within 30sec from detection temper
ature 1 (70
℃
).
[High temper
ature detection]
Detection
6
: Dur
ing pr
inting the temper
ature became 235
℃
or abo
v
e
.
Detection
7
: Dur
ing pr
inting the shor
t of the ther
mistor (AD:
0) w
as detected.
Detection
8
:
When the unit can not be controlled b
y
the softw
are
, it should be stopped
f
orcib
ly b
y
the hardw
are (250
℃
).
Detection
9
: The ther
mostat temper
ature reached 160
℃
.
Detection
j
:
When the unit can not be controlled b
y
the softw
are
,it should be stopped
f
orcib
ly b
y
the hardw
are(compar
ator).(240
℃
)
10sec
0sec
50sec
Detection temper
ature 3
(235
℃
)
Detection temper
ature 5
(250
℃
)
Secondary stable
temperature
(170
℃/
195
℃
)
Detection temperature 2
(110
℃/
135
℃
)
Primary stable
temperature
(170
℃
)
Detection temperature 1
(70
℃
)
125sec
Detection
2
The temper
ature does not reach the
pr
imar
y stab
le temper
ature (170
℃
) within
50sec after the heater is tur
ned ON.
Heater is tur
ned ON.
Detection
3
The temper
ature does not reach the secondar
y
stab
le temper
ature (170
℃/
195
℃
) within 75sec
from pr
imar
y stab
le temper
ature (170
℃
).
Detection
5
The temper
ature does not reach the pr
imar
y stab
le temper
ature
(170
℃
) within 30sec from detection temper
ature1 (70
℃
).
Detection
1
The AD v
alue of the temper
ature does not go up
6 or more in 10sec after the heater is tur
ned ON.
Detection
4
Chec
ks that the temper
ature decreased
60 deg (
110
℃/
135
℃
) or more from the
secondar
y stab
le temper
ature
.
(The detection tak
es place e
v
er
y 10 msec.)
Detection temper
ature 4
(240
℃
)