Xerox WorkCentre 220

Polygon Motor malfunction

• The LOCK signal is not detected within a predetermined period of time that begins 1 sec. after the Polygon Motor has been energized. • No new LOCK signal is detected for a 1-sec. period that begins 1.5 sec. after the first LOCK signal was detected.
• The LOCK signal is not detected for a continuous 0.5-sec. period in a state in which the Polygon Motor runs stably.
• The LOCK signal remains ON for a continuous 5-sec. period or more when the Polygon Motor remains deenergized.

Laser malfunction

• The laser output exceeds the upper limit value.
• The laser output remains lower than the lower limit value.
• The Start Scan signal (-S_SCAN) is not detected at all within a predetermined period of time after the laser has been turned ON.
• The Start Scan signal (-S_SCAN) is turned OFF.

Cooling Fan Motor malfunction

• The LOCK signal remains HIGH or LOW continuously for a predetermined period of time while the Cooling Fan Motor remains energized.

Warm-up failure

• The voltage of the Thermistor remains low for a predetermined period of time when a warm-up cycle is started.
• The temperature detected by the Thermistor remains lower than a reference value for a predetermined period of time for the period of time that begins 5 sec. after, and ends 9 sec. after, the start of the warm-up cycle (where the temperature detected by the Thermistor is 80 °C or less).
• The temperature detected by the Thermistor does not increase for a 3-sec. period or more for the period of time that begins after the lapse of a predetermined period of time after the Fusing Roller Heater Lamp has been turned ON and ends when the lamp is turned OFF.
• The Fusing Roller Heater Lamp remains ON for a 30-sec. period or more (except during the period through which the Main Motor remains energized).

Abnormally low fusing temperature

• The temperature detected by the Thermistor remains lower than the set temperature continuously for a predetermined period of time while the fusing temperature control is being provided. (The set temperatures are as follows: 140 °C during a print mode at 600 dpi; 110 °C during a print mode at 1200 dpi; 70 °C during the standby mode.)

Abnormally high fusing temperature

• The temperature detected by the Thermistor remains higher than 235 °C for a predetermined period of time while the fusing temperature control is being provided.

High voltage failure

• The Drum Charge Monitor Voltage (HVC_MON) signal falls outside a predetermined range at any time after the lapse of a predetermined period of time after the Power Switch has been turned ON.
• The Image Transfer Voltage Monitor signal (T_MON_V) and Image Transfer Current Monitor signal (T_MON_I) fall outside a corresponding predetermined range.