Sc Code E-3: Hot Roller Thermistor Open; Sc Code E-4: Hot Roller Thermistor Short; Sc Code E-5: Pressure Roller Thermistor Open - Ricoh FW780 Service Manual

2.3 SC Code E-3: Hot Roller Thermistor Open

-Definition-
The temperature detected by the hot roller thermistor does not reach 50 C within
3 minutes after the main switch is turned on.
<Point to check>
Hot roller thermistor
AC drive board ( T202-2, RA201-T4)
Fusing thermofuse
Main board (CN106-A2, -A5, -B11, -B14, -B15)

2.4 SC Code E-4: Hot Roller Thermistor Short

-Definition-
The resistance of the the hot roller thermistor is less than 0.11 K .
<Point to check>
Hot roller thermistor
Main board (CN106-A2, -A5, -B11, -B14, -B15)

2.5 SC Code E-5: Pressure Roller Thermistor Open

-Definition-
The resistance of the pressure roller thermistor is more than 0.53 M .
<Point to check>
Pressure roller thermistor
Main board (CN106-A2, -A4, -B12, -B14, -B15)
A163 6-8 SM