1.13 TONER DENSITY ON COPIES TOO LOW
- Problem -
1. Light copy
2. Carrier on the copy.
3. Light spots appear in black solid areas.
- Possible Causes -
1. The toner supply motor does not rotate.
2. SP30 (Toner Supply Mode Selection) has been changed from the default
setting.
3. The main control board is defective.
4. The charge corona current is too high.
5. Some SP or UP modes have been changed that would lead to this
problem.
6. TD sensor defective.
- Action -
Has an abnormal TD sensor condition occur?
No Yes
See the "Abnormal Condition in Toner Density Detection" section.
Does the toner supply motor rotate?
Yes No
Check the voltage at CN106-1 on the main board.
24 volts 0 volt
Replace the toner supply motor.
Replace the main control board.
Go to A
COPY QUALITY 20 December 1996
7-16
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