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Fuser thermistor error. Check for build up of toner, ripped fuser, pieces of paper. there is also a RTB no 54. Reset sc code 1st.
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B ulletin PAGE: 1/5 Model: Model V-C2 Date: 1-Dec-08 No.: RD014054 Subject: SC544 or 564 appears mistakenly Prepared by:
Tier 2 SYMPTOM SC544 (Heating roller thermistor (center) error 3) or SC564 (Heating roller non-contact thermistor error 3) may appear mistakenly while the lower drawer unit is out. This symptom occurs only in limited lots of the D014/D015 copier. See the defective lot number table attached to this RTB. (Even for the defective lot numbers, this symptom will NOT
appear 100%) NOTE: While the lower drawer unit is out, electrical power for the fusing unit is disconnected. Therefore, SC544 or SC564 should not appear actually. However, these SC may appear mistakenly. Because the fusing unit has no power, this incorrect SC544 or SC564 is not the actual thermistor error. CAUSE For the defective lot machines, the detection margin of SC544 and SC564 in the power supply unit is a little bit small compared with the design target. Therefore, the incorrect SC544 or SC564 may appear even though the electrical power for the fusing unit is disconnected. SOLUTION For the defective lot machines, upgrade the Engine firmware to the following version or newer at the machine installation or the next service visit. Firmware type: Engine Version: 1.07:01 or newer. Program No.: D0145402G or newer. After the December 2008 production, this version or newer has already been applied.
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