Gestetner B147 Service Manual page 1033

Tech Service Bulletin No. B147/B149 /B190 – 012 REISSUE
Action Required When Replacing The Development Unit
If the symptom occurs after you install a new development unit,
1. Pull out the new development unit from the machine.
2. Check if there is any toner scattering inside the machine, and clean the area if necessary.
Toner scattering can occur because in some cases, toner is supplied even when the development
unit is not running.
3. Install the new development unit again.
IMPORTANT: Make sure the development unit is pushed all the way to the rear of the machine.
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