Ricoh A172 - Page 490

Tech Service Bulletin No. A172/A199 – 016
Page 7 of 17
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Development Check Points
1.
Magenta Banding –
Install the Ball Bearing 6x10x3 (08053496) as shown, on the magenta sleeve roller
bias pin.
2.
Poor copy quality -
Apply conductive grease KS660 SHIN-ETSU (G0049668) to the sleeve Roller bias
pins. Do not apply the conductive grease into the HV receptacles.
3.
When vacuuming the Development Units –
Hold the development unit casing to avoid damaging the
TD sensors. Do this or remove the sensors.
4.
To avoid damaging the TD sensors -
Ensure that all filters are replaced at the recommended PM
interval. Clogged filters cause the temperature to increase around the TD sensors and can result in
erratic TD sensor operation.
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