Canon GP405, GP605, GP160, Gp-335, Gp-605v Service Bulletin gp405-07

Service Bulletin

Issued by Canon Europa N.V.

COPIER

Model :

Location :

Subject :

Reason :

Details :

MULTI OUTPUT TRAY-D1

No.:

GP405-007
(FF-T01-W-000060-01)

DATE:

09.07.99

INTERIOR OF MACH INE (GP MAIN UNIT), FEED UNIT (MULTI OUTPUT TRAY- D1)

JAMS WHEN MULTI OUTPUT TRAY-D1 IS CONNECTED TO MAIN GP UNIT AND FACE
DOWN DELIVERY MODE IS SELECTED

To communicate means to prevent jams in the face down delivery mode when the multi output tray-D1
is connected

<Symptom>
When you select the face down delivery mode with the multi output tray 3-D1 connected to the main
GP unit, the copy paper fed from the GP main unit fixing assembly is reversed by the switching of
paper deflector 2, and is then delivered onto the tray. This reversing of the copy paper will sometimes
cause a jam when the leading edge of the copy paper makes contact with the leading edge of the paper
deflector 2 flapper sheet.

<Cause>
Limp copy paper and copy paper which has been left in a high humidity environment will curl
downward to a greater extent w he n it is delivered from t he fixing assembly. If a feed upper guide plate
with a shallow depression (0.1mm instead of the stipulated 0.4mm) is installed, the position where the
leading edge of the flapper sheet makes contact with the upper feed guide plat e will become low ered.
A com bi nation of the upper feed guide plate with the shallow depression and the aforementioned copy
paper with a large downward curl will result in the leading edge of the copy paper to strike the leading
edge of the flapper sheet of paper deflector 2 when the copy paper is reversed for face down delivery,
causing a jam to occur. (Fig. 1-1)

Leading edge of copy
paper strikes leading
edge of fl apper sheet,
and a jam occurs

Fig. 1-1 Cross-section of upper feed guide plate section

0.1mm
depression

(when depressi on is 0.1mm)

Paper deflector plate 2

Flapper sheet

Upper feed
guide plate

Flapper sheet

contact position

Copy paper

Copy paper strikes
the position higher
than the leading edge
of flapper sheet, so
jam does not occur

Upper feed
guide plate

0.4mm
depression

Fig. 1-2 Cross-section of upper feed guide plate section

(when depressi on is 0.4mm)

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GP405-007

<Factory measure>
There will be strict supervision over the adherence to 0.4mm deepness for the upper feed guide plate
depression. This is to avoid leading edge of the copy paper with a large downward curl to strike the
leading edge of the flapper sheet when the copy paper is reversed. (Fig. 1- 2) Also in order to make
the tolerance less tight for the copy paper with large downward curl, the shape of the stay for the multi
output tray-D1 and the angle in sticking the flapper sheet of the paper deflector have been changed.
With these changes the position where the flapper sheet of the paper deflector plate 2 will make
contact with the upper f e ed guide plate 2 shifts further upw a rd. This will allow the leading e dge of
the paper with a large downward curl to avoid striking the leading edge of the flapper sheet by a more
comfortable margin. ( Fig. 2-1, 2-2)

Change in shape of l eading edge section
of upper feed guide (Tip cut of f )

Upper stay

Paper deflector 2

Change in the angle in stick ing
the sheet to shift the contact
position with the guide further

Flapper sheet

Upper stay

Servicing :

Deepness of

0.1mm here f or the
upper feed guide

Flapper sheet

contact position

Fig. 2-1 Cross-section of the former upper feed gui de

Fig 2-2 Cross-section of the new upper feed gui de

Deepness of 0.4m m
here for the upper feed
guide

When a jam occurs with the afo rementioned symptoms, replace the GP main unit’s upper f eed guide
by following the upper feed guide replacement procedures outlined below. Howev er, the installation
of the upper feed guide with insufficient deepness for the depression ma y be confined to the machines
bearing the serial number in following ranges.

GP405 ITA PNY00001

UK QNY00001
FRA SNY00001
GER TNY00001
AMS UNY00130

GP355 ITA PNZ00001

UK QNZ00001
FRA SNZ00001
GER TNZ00001
AMS UNZ00001



PNY00200



QNY00702



SNY00746



TNY00266



UNY01879



PNZ00210



QNZ00810



SNZ00750



TNZ00370



UNZ01905

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