Konica Minolta 7145 Service Manual page 217

7145 series Field Service Ver.4.0 Mar. 2004
Classification Warning
code
Sub CPU fix- F36-2
ing sensor
abnormalities
F36-3
F36-4
Scanner F41-1
abnormalities
F43-1
Image F46-1
control abnor-
malities
F46-8
F46-10
F46-11
Causes
TH1 (Fxing temperature sensor /
1)open abnormality
(Sub CPU detection)
In the sub CPU, the TH1 detects
a temperature from -8°C to -20°C
continuously for the specified
period of time.
TH2 (Fxing temperature sensor /
2) high temperature abnormality
(Sub CPU detection)
In the sub CPU, the TH2 detects
a temperature above 236°C for
the specified period of time.
TH2 (Fxing temperature sensor /
2) open abnormality
(Sub CPU detection)
In the sub CPU, the TH2 detects
a temperature from -8°C to -20°C
continuously for the specified
period of time.
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.
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.
Laser driver abnormality
Caused by overcurrent in laser
output.
Laser index abnormality
Occurs if index period is different
from expected value.
AOC abnormality
AOC counter overflow
AGC abnormality
AGC counter overflow
Resulting
operation
The main
body stops
immediately,
and the RL1
(Main) turn
OFF. Accep-
tance of all
keys is dis-
abled.
Scanner stops
immediately.
The main
body stops
immediately,
and the RL1
(Main) turn
OFF.
Scanner stops
immediately.
4-45
ERROR CODE LIST
Estimated abnormal parts
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-
∗∗
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.
M2 (Scanner motor)
SCDB (Scanner drive board)
(7145 only)
CB (Main body control board)
L1 (Exposure lamp)
Laser diode
LDB (LD drive board)
INDEX (Index sensor board)
M5 (Polygon motor)
SCB (System control board)
Laser route
ADB (A/D conversion board)
L1 (Exposure lamp)
INV1 (Exposure lamp inverter)
SCB (System control board)
Exposure unit stop position
or
3