Konica Minolta 2300 Service Manual page 164

Step Remedy
Replace the image transfer belt
1
unit.
(10) FATAL ERROR CODE 17H / SERVICE CALL 17 TONER RACK: Incorrect devel-
oping rack rotation
<Remedy>
Electrical components for detection of the malfunction
Rack motor (M2)
Rack clutch (CL1)
Rack home position sensor (PC4)
Step Remedy
1 Check PC4 operation.
2 Check CL1 operation.
3 Check M2 operation.
4 Replace PWB-A.
5 Replace PWB-P.
(11) FATAL ERROR CODE 18H /SERVICE CALL 18 FUSER UNIT: Faulty warm-up
detected
(12) FATAL ERROR CODE 19H / SERVICE CALL 19 FUSER UNIT: Incorrect fusing
roller low temperature
<Remedy>
Electrical components for detection of the malfunction
Fusing roller heater lamp (H1)
Fusing pressure roller heater lamp (H2)
Thermostat (TS1)
Step Check
Check for continuity at H1 and
1
H2.
2 Check for continuity at TS1.
Is the resistance at TH1 infinite?
3 (between CN18-1 and -2 on the
thermistor)
WARNING DIAGRAM
Reference
page
Control signal
- -
Master board (PWB-A)
Controller control board (PWB-P)
WARNING DIAGRAM
Reference
page
Control signal
149 PC4_ON
150 CL1_REM
151 -
- -
- -
Master board (PWB-A)
Power unit (PU)
Result Remedy
Control sig-
Replace H1 and
NO
H2.
NO Replace TS1.
Clean TH1 or
YES replace the fusing
unit.
Replace PU.
NO
Replace PWB-A.
164
Location(electrical com-
ponent)
-
Location(electrical com-
ponent)
3-F
2-F
3-E
-
-
WARNING DIAGRAM
Location(electri-
nal cal component)
- 2-B, 2-C
- 2-C
HEATER 2-D