Gp 23 Malfunction Detection - Xerox FaxCentre F116 Service Manual

General Procedures/Information

GP 23 Malfunction Detection

When any of the following malfunctions is detected, the drive for all elements is turned OFF and
the hardware error is displayed on the control panel and the Status Monitor installed in the PC.
SOS malfunction
1. No -S_SCAN signals are detected within 0.5 sec. after the laser has been turned ON.
2. The -S_SCAN signal is turned OFF after the laser has been turned ON.
Polygon Motor malfunction
1. No POLYGON_LOCK signals are detected for a continuous 0.5-sec. period at any time 6 sec.
after the Polygon Motor has been energized.
2. The POLYGON_LOCK signal is detected for a continuous 5-sec. period when the Polygon
Motor is de-energized.
3. No POLYGON_LOCK signals are detected within 3 sec. after the lapse of 1 sec. after the Poly-
gon Motor has been energized.
4. No POLYGON_LOCK signals are detected within 1 sec. after the first POLYGON_LOCK sig-
nal has been detected after the Polygon Motor was energized.
Main Drive Motor malfunction
1. No -Motor_Lock signals are detected within 1 sec. after the Main Drive Motor has been ener-
gized.
2. The -Motor_Lock signal remains OFF for a continuous 0.1-sec. period.
Fusing Malfunction
1. An abnormally high fusing temperature results if the temperature detected by the Thermistor
°
exceeds 235 C for 0.05 sec. while the fusing temperature is being controlled.
2. The Thermistor is considered to be faulty if the temperature detected by the Thermistor is less
than the specified value for 0.05 sec. at any time for a 9-sec. period after 5 sec. after the
warm-up cycle has been started (only if the temperature detected by the Thermistor is 80
less).
3. A warm-up failure results if the temperature detected by the Thermistor does not increase for
the period of 3 sec. or more during the period of time from 0.7 sec. after the Fuser Lamp (H1)
is turned ON to the time when the Fuser Lamp (H1) is turned OFF (except during printing).
4. A warm-up failure results if the Fuser Lamp (H1) remains ON for 30 sec. or more (except while
the Main Drive Motor remains energized).
5. An abnormally low fusing temperature results if the temperature detected by the Thermistor
remains below the set temperature for a continuous 50-msec. period in any mode (the set tem-
°
perature is 140 C at 600 dpi and 110
Fuser Fan Malfunction
The FAN_LOCK signal remains HIGH or LOW for a continuous 2-sec. period while the Fuser Fan
(M2) is turning.
6-66
°
C at 1200 dpi during printing, and 70
9/04
°
C or
°
C during standby).
FaxCentre F116/F116L