PCU SECTION
B121 Series/B259 Series 3-26 SM
3.6.7 AFTER REPLACEMENT OR ADJUSTMENT
IMPORTANT: After replacing or adjusting any of the PCU components, do the
following procedure. This procedure is not necessary when you
replaced the whole PCU with a new one.
1. Take 5 sample copies.
2. If black dots (dropped toner) appear on any of the copies, continue as follows.
(If all copies are clean, it is not necessary to carry out the following steps.)
3. Remove the PCU from the mainframe.
4. Tap the top of the PCU housing 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 PCU 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 A4/81/2" x 11" paper, make 4 copies/prints.
• If using A3/11" x 17" paper, make 2 copies/prints.
• To make solid black prints, use SP5-902 pattern 8.
NOTE: Step 7 is required only after parts replacement or adjustment.
There is no need to make sky-shot (or solid black) copies after
replacing the developer.
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