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DIAGRAMS
Main body
Classifica-
tion
Causes
Set "0" to the
address 3-1,
3-2, 3-3, or 3-4
in DIPSW.
OFF of main
switch → ON
Remove
jammed paper,
if any.
Set original
glass, and OFF
→ ON of main
switch.
OFF of main
switch → ON
Remove
jammed paper,
if any.
CB (Control board)
TH1 (Fixing temperature
sensor 1)
TH2 (Fixing temperature
sensor 2)
TH3 (Fixing temperature
sensor 3)
Fixing unit insertion failure
Lever set failure
OPMDB (Optics drive mo-
tor drive board)
PS3 (Shading position)
PS4 (Paper feed restart)
PS5 (Optics return)
PS7 (Optics timing)
Exposure unit
Carry out 47-031 (optics stop
position automatic correction).
OPMDB (Optics drive mo-
tor drive board)
CB brake data
Carry out 47-031 (optics stop
position automatic correction).
PS8 (Glass)
Original glass mounting
failure
CB (Control board)
CVR
L1 (Exposure lamp)
Exposure temperature
fuse
F36-1
F36-2
F37-1
F41-1
F41-2
F41-3
F41-4
F43-1
F43-2
F43-3
F43-4
Main relay is turned
OFF, and all keys are
not accepted.
The main body is
stopped immediately,
main relay is turned
OFF, and all keys are
not accepted.
The main body is
stopped immediately if it
is in process of copying,
main relay is turned
OFF, and all keys are
not accepted.
A prescribed temperature is not
reached within 120 seconds
from the start of warm-up. (Fix-
ing sensor snapping detection
software operates.)
A prescribed temperature is not
reached within 40 seconds from
the start of warm-up. (Fixing
sensor snapping detection cir-
cuit operates.)
The lower fixing roller
temperature exceeded
200°C/392˚F. (fixing tem-
perature abnormality)
Each PS in optics is not turned ON
within 5 seconds from the start of
optics returning in initial search.
(PS3 (shading position),PS4 (pa-
per feed restart),PS5 (optics
return),PS7 (optics timing))
Home position sensors are not
turned ON when optics stops in
optics returning. (PS5 and PS7)
Optics return signal is not turned
ON within 120 msec from start
of brake when optics returning.
PS8 (glass) is OFF.
During copying, FB signal of
L1 (exposure lamp is ON or is
snapped) is ON for 20
seconds or more. (detected
by software)
When software detects that
FB signal of L1 (outputted
when exposure lamp is ON or
is snapped) is not turned ON
even after the lapse of 1
second after the outputting of
L1 lighting signals.
FB signal of L1 is ON for 45
seconds in a self-diagnosis
mode and for 30 seconds in all
cases other than the above.
(detected by hardware)
FB signal of L1 (outputted
when exposure lamp is ON or
is snapped) is ON for 30
seconds or more during
idling. (detected by software)
Snapping of
fixing sensor
Lower fixing
roller
temperature
trouble
Optics
returning
trouble
Glass open
trouble
CVR trouble
Estimated abnormal parts
Warning
code
Releasing
method
Operation in case of
warning occurrence
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