Savin SDC103A Manuel de service télécharger pdf (Page 471)

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101

2. HOW TO DETERMINE IF THE POTENTIAL

SENSOR OR ID SENSOR IS DEFECTIVE

Purpose

When an image problem occurs, it is difficult to recognize whether there is a

problem with these sensors with only the SP data print out.

Measuring the signal coming into the main control board can help you to

recognize the defective part.

Overview

• Ensure the resistance of the drum surface and the grounding wire.

• Check the potential sensor and ID sensor output.

Condition

1. Image density is slightly high, but there are no other image problems.

2. The following SP values are out of the normal range for each color by

about the same amount.

SP No. Normal condition*

3-121 K: 2.7 ~ 3.3

Color: 2.5 ~ 3.0

3-902 10 ~ 5

3. The Vmin display (SP3-910) value for each color is similar.

The value for Bk should be different from the color value.

(Normal condition*: Bk

≅

0.03, Color

≅

1.80)

* : These values come from a test machine, therefore the values are just

reference data and might not suit your machine.

HOW TO DETERMINE IF THE POTENTIAL SENSOR OR ID SENSOR IS DEFECTIVE

A166/A187/A189 6-34 SM

CÓPIA NÃO CONTROLADA

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Savin SDC103A Manuel de service Page 471

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