Canon IR5570 Series Manuale di riferimento

(1/4)

Service Bulletin

Issued by Canon Europa N.V. COPIER B/W

HARDWARE

Location:

Transfer/ Separate Corona Assembly

Subject:

Image void at 22mm intervals in main scanning direction, caused by a leak in the Transfer/ Separate Corona

Assembly

Detail:

Image void occurs at approx. 22mm intervals and ALARM CODE "300002" is displayed.

Model:

iR5570

iR6570

Ref No.:

iR6570-004

(F1-T01-0M5-10019-01)

Date:

August, 2005

P-1 Image void at 22mm intervals

[1] 22mm

iR6570-004

(2/4)

<Cause>

Since the process speed was increased starting with the iR5000 series, the output level of high voltage was also

increased;however,amarginforhighvoltageleakagewasreduced.Thiscauseshighvoltageleakagedepending

on the position to which the Corona sheet 2 is affixed, resulting in image void at 22mm intervals.

Service Work:

When the above-mentioned symptom occurs, remove the Transfer/ Separate Corona Assembly from the Main

Unit and apply the Corona sheet 2, referring to "Service Manual > 7.Image Formation > 7.10.15 Transfer/

Separation Charging Assembly".

Work procedure

1. When a 22mm interval image occurs, check "COPIER > DISPLAY > ALARM-2" in Service Mode

(Level 1) and make sure that "300002" (transfer leak) is displayed in CODE.

P-2 Transfer/ Separate Corona Assembly

[2] Position where the Corona sheet2 is applied

iR6570-004

(3/4)

2. Make sure that there is no dirt or lint in the Transfer/ Separate Corona Assembly and clean it with an air-blow

tool, etc., if any.

3. As shown in the figure below, apply the Corona sheet 2 in the vertical direction to the Metal sheet which is

located on the backside of the Transfer/ Separate Corona Assembly and has a plastic sheet.

P-3 ALARM CODE screen

[3] ALARM CODE

P-4 Area where the Corona sheet2 is applied in the Transfer/ Separete Corona Assembly

[4] Corona sheet 2 (FB2-7968)

iR6570-004

(4/4)

Standard for applying the sheet

4. Set the Transfer/ Separate Corona Assembly to the Main Unit. Copy an image and make sure that a 22mm

interval image does not occur and that "3000002" is not displayed in alarm history.

Service parts:

P-5 Standard for applying the Corona sheet2

[5] Transfer/Separate Corona Assembly

[6] Insert the Corona sheet 2 until it contacts the Lower Sheet metal.

[7] Overhead view

[8] Sheet metal

[9] Position to apply the sheet

[10] The edge of the sheet should be off to the side of the sheet metal by 0.5mm or more.

[11] The sheet should not contact the block

Part number Description Q'ty P.C.

Old 580

New FB2-7968-000 Corona sheet 2 0->1

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