Service Manual

ERROR CODE LIST
4-45
IV DIAGRAMS
3
Main body
Sub CPU fix-
ing sensor
abnormalities
F36-2 TH1 (Fxing temperature sensor/
1)open abnormality
(Sub CPU detection)
In the sub CPU, the TH1 detects
a temperature from 18°F to -4°F
continuously for the specified
period of time.
The main
body stops
immediately,
and the RL1
(Main) turn
OFF. Accep-
tance of all
keys is dis-
abled.
TH1 (Fxing temperature sensor/1)
TH2 (Fxing temperature sensor/2)
L2 (Fixing heater lamp/1)
L3 (Fixing heater lamp/2)
CB (Main body control board)
DCPS (DC power supply)
WARNING
• When F34-
∗∗
, F35-
∗∗
or
F36-
∗∗
(fixing tempera-
ture related abnormality)
occurs, be sure to repair a
defective part before set-
ting the 25 DIPSW 3-1 to 0.
If the 25 DIPSW 3-1 is set
to 0 without repairing a
defective part, this may
cause a fire.
F36-3 TH2 (Fxing temperature sensor/
2) high temperature abnormality
(Sub CPU detection)
In the sub CPU, the TH2 detects
a temperature above 457°F for
the specified period of time.
F36-4 TH2 (Fxing temperature sensor/
2) open abnormality
(Sub CPU detection)
In the sub CPU, the TH2 detects
a temperature from 18°F to -4°F
continuously for the specified
period of time.
Scanner
abnormalities
F41-1 M2 (Scanner motor) drive abnor-
mality
Occurs at exposure unit initial
search or at return scan if PS14
(Scanner home position sensor)
fails to turn ON within a predeter-
mined time.
Scanner stops
immediately.
M2 (Scanner motor)
SCDB (Scanner drive board)
(7145 only)
CB (Main body control board)
F43-1 L1 (Exposure lamp) abnormality
After the L1 is turned ON, an L1
abnormality signal is detected
continuously after the elapse of
the specified period of time.
L1 (Exposure lamp)
Image
control abnor-
malities
F46-1 Laser driver abnormality
Caused by overcurrent in laser
output.
The main
body stops
immediately,
and the RL1
(Main) turn
OFF.
Laser diode
LDB (LD drive board)
F46-8 Laser index abnormality
Occurs if index period is different
from expected value.
INDEX (Index sensor board)
M5 (Polygon motor)
SCB (System control board)
Laser route
F46-10 AOC abnormality
AOC counter overflow
Scanner stops
immediately.
ADB (A/D conversion board)
L1 (Exposure lamp)
INV1 (Exposure lamp inverter)
SCB (System control board)
Exposure unit stop position
F46-11 AGC abnormality
AGC counter overflow
Classification
Warning
code
Causes Resulting
operation
Estimated abnormal parts