Sc Code E-4: Hot Roller Thermistor Short; Sc Code E-5: Pressure Roller Thermistor Open; Sc Code E-6: Pressure Roller Thermistor Short; Sc Code E-7: Fusing Overheat - Ricoh FW780 Service Manual

SERVICE CALL CONDITIONS

SC Code E-4: Hot Roller Thermistor Short

Definition
The resistance of the hot roller thermistor is less than 0.11 K .
Points to Check
Hot roller thermistor
Main board (CN102-A5, -B11, -B13, -B14)

SC Code E-5: Pressure Roller Thermistor Open

Definition
The resistance of the pressure roller thermistor is more than 0.53 M .
Points to Check
Pressure roller thermistor
Main board (CN102-A4, -B12, -B13, -B14)

SC Code E-6: Pressure Roller Thermistor Short

Definition
The resistance of the pressure roller thermistor is less than 0.55 K .
Points to check
Pressure roller thermistor
Main board (CN102-A4, -B12, -B13, -B14)

SC Code E-7: Fusing Overheat

Definition
The temperature detected by the hot roller thermistor exceeds 250 C.
Points to Check
Hot roller thermistor
Fusing thermofuse
AC drive board
Main board (CN102-A1, -B13, -B14)
B047/B048 6-2
11 May, 2001
SM