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30
April, '89
6. Image Density Sensor Adjustment
ADJUSTMENT STANDARD: 4.0±0.2 volts (Vsg)
1.
Clean the following parts:
a)
Lens and Mirrors
b)
Exposure Glass
c)
Toner Shield Glass
d)
Corona Wires
e)
Erase Lamp
f)
Quenching Lamp
Image Density Sensor
g)
NOTE: Discharge any static electricity on the sensor after cleaning it. A clean
finger will serve as a discharge medium.
2.
Place 3 sheets of paper on the exposure glass.
3.
Set SP 1-3, 2-3, and 29. Reset SP 2-4.
4.
Press the Start key.
5.
Adjust the output of the image density sensor (VSG) using VR203 on the
main board.
When VR203 is rotated clockwise, Vsg increases.
Note:
When VR203 is rotated counterclockwise, Vsg decreases.
5-28
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