Technical Bulletin PAGE: 4/7
Reissued: 4-Aug-15
- Procedure 2 –
2-1. Execute the standard developer removal operation.
Procedure 2 (manual developer removal; 2-2 through 2-10) and all of
Procedure 3 were deleted. These procedures are no longer needed due to the
adoption of improved toner.
- Procedure 4 –
Removing the TD sensor and cleaning the opening
Do this procedure if toner scattering is observed around the development unit as
shown in the photo below, which will achieve higher security in preventing toner
scattering.
4-1. Take out the development unit and place it on a table upside-down.
4-2. Remove the TD sensor from the development unit. (screw x2)
4-3. Vacuum the toner adhered to the opening where the TD sensor was mounted.
This is non-circulating toner that blocks the TD sensor and causes false
detection of the toner concentration, resulting in an incorrect Vt.
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