I-17 - Page 230

Confidential

9-42

I-17 

Black band 

Possible cause 

Step

Check 

Result

Remedy 

Ground 

contacts 

Corona failure 

1 

Is the wire cleaner at its 
home position? 

No 

Return the wire cleaner 
to its home position. 

(2) 

Corona dirty 

2 

Is the corona wire dirty? 

Yes 

1) Clean the corona 

wire. 

2) If the problem still 

appears after 
cleaning, replace the 
drum unit. 

(2)