Savin 4027 Service Manual download pdf (Page 235)

1.11 TONER DENSITY TOO HIGH

1. Dirty background appears on the copy.

2. The image density of black solid areas is too high.

- Possible Causes -

1. The toner supply clutch keeps turning continuously.

2. The copier entered fixed toner supply mode due to an abnormal sensor

3. The main control board is defective.

pattern development bias is too high.

5. The drum charge voltage for making V

patterns is too low.

Check the values of V

with SP3-103-001 and SP3-103-002

respectively

Clean the ID sensor and around the drum including the development unit.

Adjust the ID sensor with SP3-001.

Can the ID sensor be adjusted correctly?

Refer to the section dealing with SC351.

Enter SP3-103-001 (displays the value of V

) and make sky-shot copies

becomes about 0.4 V.

A156/A160/A162 6-16 FSM

CÓPIA NÃO CONTROLADA

Savin 4027 Service Manual Page 235