Toshiba e-STUDIO281c Service Manual page 353

2) Relation between IH status signal and IH errors
(L: Low level, H: High level).
Check timing
H1ERR1
When the power is
turned ON, or when
both the front cover
and jam access cover
is closed
On usual
Front cover or jam
access cover is (Other than the above)
opened
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Signal
H1ERR2
L L Abnormality detected at ini-
tialization
* An abnormal status is
detected at the initializa-
tion.
L L Power voltage abnormality
* AC power is not supplied
to the IH board.
L H Switching element (IGBT)
abnormality
* Wire breakings, short-cir-
cuits abnormal fluctua-
tions or overheating (=
insufficient cooling) of
IGBT
IH coil abnormality caused by
continuously applied current
* Current has been continu-
ously applied to any one
of the IH coils for 15 sec-
onds or more
H H Input current lower limit
abnormality
* Wire breakings or
improper installation of IH
coil
H L No abnormality
L L Power voltage abnormality
when the cover is opened
* An abnormal status is
detected when the cover
is opened
16 - 11
Status Error code
C471
C472
C480
C490
-
C475
e-STUDIO281c/351c/451c
FUSER UNIT / PAPER EXIT SECTION
Counter
(08-400)
11
12
15
17
-
10
16