Ricoh FT4480 Field Service Manual page 43

15 MARCH 1987
7. Do not touch the following parts with bare hands:
• Reflectors
• Exposure Lamp
• Mirrors and Lens
8. Do not bend the Auto ID fiber optics cable sharply.
9. When adjusting the light intensity, make ten copies before proceeding
to check copy image if the main switch has just been turned on. This
is to eliminate the effect of rest time compensation.
10. After adjusting the light intensity, check and adjust the Auto ID
sensor.
- Development -
1. Be careful not to nick or scratch the development roller sleeve.
2. Place a sheet of paper under the development unit when it is
the copier.
Be careful not to bend the bias terminal.
3.
C l e a n t h e d r i v e g e a r s a n d e n d m a g n e t s a f t e r r e m o v i n g u s e d
4.
developer.
5. Clean the development unit guide plate before reinstalling the unit.
- Toner Supply -
1. The image density sensor and the pre-transfer lamp unit should be
cleaned with a blower brush.
Do not touch the sensor pattern with bare hands.
2.
3. Image density sensor adjustment is required when:
• The ID sensor/PTL board is replaced.
• The main board is replaced.
• The drum has been replaced and Vsg is out of specification.
• Problems with toner supply have occurred and ID sensor check
shows Vsg to be out of specification.
Grease the toner supply clutch with Mobil Temp 78 periodically to
4.
avoid noise and faulty operation.
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out of