Gestetner A294, Руководство по обслуживанию

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SERVICE CALL CONDITIONS Rev. 9/2001
A294/A295 7-12 SM
SC353: ID Sensor Error 4
Definition [D]
One of the following ID sensor output voltages is detected at ID sensor
initialization.
1) V
SG
< 4.0 V when the maximum PWM input (255) is applied to the ID
sensor.
2) V
SG
≥ 4.0 V when the minimum PWM input (0) is applied to the ID sensor.
Possible Causes
•
ID sensor defective
• ID sensor connector defective
•
Poor ID sensor connector connection
•
BCU defective
•
Charge/bias/grid pack defective
•
Dirty ID sensor
•
Defect on the drum at the ID sensor pattern writing area
SC354: ID Sensor Error 5
Definition [D]
V
SG
is not adjusted within the target (4.0
±
0.2 V) within 20 seconds during
V
SG
checking.
Possible Causes
•
ID sensor defective
•
ID sensor connector defective
•
Poor ID sensor connector connection
• BCU defective
•
Charge/bias/grid pack defective
•
Dirty ID sensor
• Defect on the drum at the ID sensor pattern writing area
SC355: ID Sensor Voltage Error
Definition [B]
The ID sensor voltage (V
P
) exceeds 700 V, 10 times consecutively.
Possible Causes
•
Drum potential sensor defective
•
IO Board defective
•
Poor connection of the drum unit connector
•
LD defective
•
Poor drum cleaning
•
Dirty optics
• Drum wear
CÓPIA NÃO CONTROLADA
CÓPIA NÃO CONTROLADA