and Adjustment
4.8.8 AFTER REPLACEMENT OR ADJUSTMENT
 Do the following procedure after replace or adjust any of the PCDU components. This
procedure is not necessary when you replaced the whole PCDU with a new one.
1. Take 5 sample copies.
2. If black dots (dropped toner) show on any of the copies, continue as follows. (If all
copies are clean, you do not need to do the following steps.)
3. Remove the PCDU from the mainframe.
4. Tap the top of the PCDU with a screwdriver at eight evenly spaced locations (two or
three taps at each spot), to knock the recycled toner down into the development
section.
5. Put the PCDU back into the mainframe.
6. Turn the main power on. Then open and close the door and wait for the machine to
rotate the development roller for 10 seconds. Then open and close the door two more
times, so that total rotation time is 30 seconds.
7. Make some sky-shot copies (or solid black prints).
 If using A4 or 8
1
/
2
" x 11" paper, make 4 copies/prints.
 If using A3 or 11" x 17" paper, make 2 copies/prints.
 Step 7 is required only after parts replacement or adjustment. You do not need to
make sky-shot (or solid black) copies after you replace the developer.
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