Sc 6Xx (Device Communication) - Ricoh P C300W Field Service Manual

SC No. Type
SC574- A High-temperature hardware error (pressure roller thermistor (end) (TH4))
00
After the initial setting is completed at startup or returning from energy saver mode,
the pressure roller thermistor (end) has detected over 240 °C continuously for 0.03
seconds.
•
•
•
•
Enter the SP mode and execute fuser SC reset. Then turn the machine OFF and
ON.
If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling
the power after each step.
1.
2.
3.
SC No. Type
SC599- D Fuse for new unit detection error
00
Fuse for new unit detection cannot be blown
•
•
•
Check if the SC occurs by turning the power OFF then ON. If the SC occurs again,
do the following steps. Check if the SC reoccurs by cycling the power after each
step.
1.
2.
3.
4.
5.
6.

SC 6xx (Device Communication)

SC No. Type
SC645- C ID chip connection error (K)
01
SC645- C ID chip connection error (M)
Error Name/Error Condition/Major Cause/Solution
TRIAC short
EGB (PCB1) defective
Pressure roller thermistor (end) (TH4) defective
Fusing temperature control software crashed
If TRIAC damaged, replace PSU (PCB4).
Replace the EGB (PCB1).
Replace the Pressure roller thermistor (end) (TH4).
Error Name/Error Condition/Major Cause/Solution
Short-circuit between connector pins
Defective fuse
Defective fuse blown circuit driver on EGB (PCB1)
Check the connector pins at the fusing unit.
Check the connector pins at the fusing relay connector.
Check the CN307 connector pins at the EGB.
Replace the fusing unit.
Replace the EGB (PCB1).
Replace the harness between the fusing unit and EGB (PCB1).
Error Name/Error Condition/Major Cause/Solution
6.Troubleshooting
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