Canon iR5570 Series Reference manual

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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:
<Symptom>
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

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<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

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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)

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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