Malfunction; Detection Timing By Malfunction Code - Minolta Di152 Service Manual

4.

MALFUNCTION

The copier's CPU is equipped with a self-diagnostics function that, on detecting a malfunc-
tion, gives the corresponding malfunction code on the Display.
4-1.

Detection Timing by Malfunction Code

Code Description
C0000 Main Motor malfunc-
tion
C0045 Fusing Cooling Fan
Motor malfunction
C004E Power Supply Cool-
ing Fan Motor mal-
function
C0070 Toner Replenishing
Motor malfunction
C0210 Abnormal image
transfer voltage
C03FF Improperly set Adjust
Mode 11
C0500 Warm-up failure
C0510 Abnormally low fus-
ing temperature
C0520 Abnormally high fus-
ing temperature
Detection Timing
• The Main Motor (M1) Lock signal remains HIGH for a
continuous 1-sec. period at any time 1 sec. after the
Main Motor has started turning.
• The Fusing Cooling Fan Motor (M3) Lock signal
remains HIGH for a continuous 1-sec. period while the
Fusing Cooling Fan Motor is turning at full speed or
decelerated speed.
• The Power Supply Cooling Fan Motor (M4) Lock sig-
nal remains HIGH for a continuous 1-sec. period while
the Power Supply Cooling Fan Motor Remote signal
remains ON (for full-speed rotation) or OFF (for decel-
erated-speed rotation).
• The Toner Bottle Home Position Sensor (PC7) outputs
a HIGH signal for a continuous 3.5-sec. period while
the Toner Bottle is turning.
• The Toner Bottle Home Position Sensor (PC7) outputs
a LOW signal for a continuous 2-sec. period while the
Toner Bottle is turning.
• The image transfer voltage remains more than 100 V
for a continuous given period of time while the PC
Drum remains stationary.
• An incorrect setting is made of Adjust 11.
• It takes the surface temperature of the Left Fusing
Roller more than 35 sec. to reach 100 °C since the
start of a warm-up cycle.
• It takes the surface temperature of the Left Fusing
Roller more than 25 sec. to reach 140 °C after it has
reached 100 °C.
• It takes more than 20 sec. for the warm-up cycle to be
completed after the surface temperature of the Left
Fusing Roller has reached 140 °C.
• The surface temperature of the Left Fusing Roller
remains lower than 120 °C for a given period of time
while the copier is in a standby state.
• The surface temperature of the Left Fusing Roller
remains lower than 120 °C for a given period of time
during a print cycle.
The surface temperature of the Left Fusing Roller
remains higher than 240 °C for a given period of time.
T-18