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31 December 1992
2.1.8 SC Code EA - Fusing Warm-up Error
Definition:
The temperature detected by the hot roller thermistor does not reach the tar-
get ready temperature within 12 minutes.
<Points to check>
Hot roller thermistor
•
Fusing thermofuse
•
AC controller 1 (T304/T306 for AC input voltage, T305/T307)
•
Main Board (CN107-A25, CN107-A15)
•
2.1.9 SC Code Eb -Pulse Generator Abnormal
Definition:
The main board does not receive a pulse from the pulse generator for 1 sec-
ond while the main motor is on.
<Points to check>
Connection of the pulse generator connector terminal
•
Pulse generator disc (turning or not)
•
Main board (CN112-1, CN112-3)
•
2.1.10 SC Code EC - Total Counter Abnormal
Definition:
Total counter does not operate.
<Points to check>
Total counter and its connection
•
Main board (CN107-A14, CN107-B19, CN107-A20)
•
2.1.11 SC Code Ed - Toner Density Sensor Abnormal
Definition:
The toner density sensor voltage is less than 1.6 volts or more than 4.7 volts
for 1 minute.
<Points to check>
Toner density sensor
•
Flow of the developer at the toner density sensor area
•
Main board (CN101-1, CN101-2, CN101-3)
•
TROUBLESHOOTING SC CODES
6-11
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