AR-C260 (serv.man14). (11) Troubleshooting - Sharp Copying Equipment Service Manual (repair manual). Page 18

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AR-C260/C260M  TROUBLESHOOTING  11 - 18
Main 
code
Sub 
code
Title
ICU-PRT communication trouble 
(ICU detection)
F9
00
Display
Lamp/Message
Phenomenon
Detail
Communication 
establishment error, 
framing, parity, protocol 
error
Section
Case 1
Cause
Defective connection of 
the ICU/PRT PWB 
communication connector, 
defective harness between 
the ICU PWB and the PRT 
PWB, defective ICU PWB/
PRT PWB
Check & 
Remedy
Check connection and the 
harness between the ICU 
PWB and the MFP PWB. 
Check the machine earth. 
Replace the ICU or the 
PRT PWB.
Main 
code
Sub 
code
Title
PRT DRAM trouble
F9
01
Display
Lamp/Message
Phenomenon
Detail
DRAM in the PRT PWB 
cannot be accessed.
Section
Case  1
Cause
Defective DRAM, defective 
installation of the DRAM
Check & 
Remedy
Replace the DRAM. Check 
connection of the DRAM.
Main 
code
Sub 
code
Title
NIC port check error
F9
03
Display
Lamp/Message
Phenomenon
Detail
NIC port check error
Section
Case 1
Cause
Defective connection of 
the NIC connector, 
defective NIC PWB, 
defective PRT PWB
Check & 
Remedy
Check the NIC connector 
again. Replace the HDD. 
Replace the PRT PWB.
Main 
code
Sub 
code
Title
HDD trouble (PRT controller 
detection)
F9
20
Display
Lamp/Message
Phenomenon
Detail
The HDD (option) does not 
operate normally in the 
machine with the HDD.
Section
Case 1
Cause
Defective connection of 
the HDD connector, 
defective HDD, defective 
PRT PWB
Check & 
Remedy
Check the HDD again. 
Replace the HDD. 
Replace the PRT PWB.
Main 
code
Sub 
code
Title
Thermistor open (HL1)
H2
00
Display
Lamp/Message
Phenomenon
Detail
Thermistor open
Section
Fusing
Case 1
Cause
Disconnection of the 
fusing section connector
Check & 
Remedy
Check the connector and 
the harness between the 
thermistor and the control 
PWB. 
Case 2
Cause
The fusing unit is not 
installed. 
Check & 
Remedy
Install the fusing unit. 
Case 3
Cause
Thermistor trouble, control 
PWB trouble, AC power 
supply trouble 
Check & 
Remedy
Replace the thermistor or 
the control PWB. Check 
the AC power supply. 
Main 
code
Sub 
code
Title
Thermistor open (HL2)
H2
01
Display
Lamp/Message
Phenomenon
Detail
Thermistor open
Section
Fusing
Case 1
Cause
Disconnection of the 
fusing section connector
Check & 
Remedy
Check the connector and 
the harness between the 
thermistor and the control 
PWB. 
Case 2
Cause
The fusing unit is not 
installed. 
Check & 
Remedy
Install the fusing unit. 
Case 3
Cause
Thermistor trouble, control 
PWB trouble, AC power 
supply trouble 
Check & 
Remedy
Replace the thermistor or 
the control PWB. Check 
the AC power supply. 
Main 
code
Sub 
code
Title
Fusing section high temperature 
trouble (THS1)
H3
00
Display
Lamp/Message
Phenomenon
Detail
The fusing temperature 
exceeds 230°C.
Section
Fusing
Common
Check 
Use SIM 5-2 to check the 
heater lamp flashing 
operation.
Case 1
Cause
The heater lamp flashes 
properly with SIM 5-2. 
Thermistor trouble, 
disconnection of the fusing 
section connector
Check & 
Remedy
Check the thermistor and 
its harness. Cancel the 
error with SIM 14. 
Case 2
Cause
The heater lamp keeps ON 
with SIM 5-2.
Control PWB trouble, AC 
power supply trouble
Check & 
Remedy
Check the AC PWB and 
the control PWB lamp 
control circuit.
Cancel the error with SIM 
14. 
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