Question about Canon imageCLASS D780 All-In-One Laser Printer

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BLANK COPIES ON MY D780 CANON COPIER - Canon imageCLASS D780 All-In-One Laser Printer

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Posted on Jan 02, 2017

canontech
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SOURCE: canon image class copier

Internal Components 2
Subject:
Prevention of blank image (modifying the shape of the laser shutter and applying grease to the laser shutter arm)
Detail:
<Symptom>
Since the laser shutter [1] is not opened when the toner cartridge is inserted into the machine, a blank image is output in
some cases.
[1] Laser shutter
[2] Laser shutter arm
<Cause>
When the toner cartridge is inserted, the laser shutter arm [2] pushes down on the laser shutter [1]. In case that the arm has
a scratch on its sliding surface, however, it is caught in the area [3] where the arm comes into contact with the shutter,
preventing the shutter from being opened.
Service Bulletin LBP-FAX/LBP-MFP
HARDWARE
Issued by Canon Europa N.V.
MF6500-014 Rev. 3
(2/4)
[A] View of the closed laser shutter [1] Laser shutter
[B] View of the opened laser shutter [2] Laser shutter arm
[3] Area where the arm is caught
<Factory measures>
a. Modifying the shape of the laser shutter
Modify the shape of the laser shutter so as to prevent the shutter from being caught when the laser shutter arm pushes it
(A turnback is added to the edge of the area that contacts the laser shutter arm).
P-3 Laser shutter [A] Old type
[B] New type
b. Applying grease to the laser shutter arm
To decrease the sliding resistance of the contacting surface (P-2 [3]) of the laser shutter arm and laser shutter, apply grease
to the laser shutter arm.
P-4 Laser shutter arm [1] Grease application area
MF6500-014 Rev. 3
(3/4)
c. Changing the shape of the laser shutter arm and applying grease to it.
To decrease the sliding resistance of the contacting surface of the laser shutter arm and laser shutter, change the shape of
the laser shutter arm. Additionally, apply grease to the arm.
P-5 Laser shutter arm [1] View of the rib in the new position
[A] Old type [2] View of the new shape of rib
[B] New type [3] View of the arm from which the rib is removed
d. Discontinuing application of grease to the laser shutter arm.
It was confirmed that the new shape of the laser shutter and laser shutter arm do not need lubrication by grease for normal
operation. From this, application of grease is discontinued.
Service Work:
When the foregoing symptom occurs, replace the laser shutter with the new type. In addition, remove the laser shutter arm
and apply a rice-grain sized amount of grease (PERMALUB G No. 2); about 30mg) evenly to the area [1] shown in P-4.
As for a machine having one of the serial numbers listed in “Affected Machines” below as “machines for which the shape
change of the laser shutter is carried out”, only application of grease is required: there is no need to replace the laser
shutter arm because the new type shutter has already been mounted onto them.
When replacing with the new type of laser shutter arm, there is no need to apply grease to it.
Service Parts:
No. Part No. Part Name Q’ty Stock Compatibility
Available
from Fig. No.
O FC6-7328-000 SHUTTER, LASER 1 > 0 1 N FC6-7328-020 SHUTTER, LASER 0 > 1 DC NY In stock 102
2 ON CK-055 1-020 LUBE, PERMALUB G NO. 2 0 > 1 F In stock -
3 ON FFCC66--77333311--000200 AARRMM,, SSHHUUTTTTEERR,, LLAASSEERR 10 >> 01 DC YN In stock 102
Affected Machines:
- Machines for which the shape change of the laser shutter is carried out
LaserBase MF6530 EU1 SNF50048 and later
LaserBase MF6550 EU1 SNG50009 and later
i-SENSYS MF6530 EU1 BAC02001 and later
i-SENSYS MF6550 EU1 DAC02001 and later
LaserBase MF6540PL EU1 SNP50288 and later
LaserBase MF6560PL EU1 SNQ50001 and later
LaserBase MF6580PL EU1 SNR21266 and later
i-SENSYS MF6540PL EU1 EAC02001 and later
i-SENSYS MF6560PL EU1 FAC02001 and later
i-SENSYS MF6580PL EU1 GAC02001 and later
LaserBase MF6530 EU2 SNX50504 and later
LaserBase MF6550 EU2 SPB50568 and later
LaserBase MF6540PL EU2 SPC50196 and later
LaserBase MF6560PL EU2 SPD50012 and later
LaserBase MF6580PL EU2 SPF50288 and later
LaserBase MF6550 EU3 SPG50312 and later
MF6500-014 Rev. 3
(4/4)
LaserBase MF6560PL EU3 SPH50444 and later
LaserBase MF6580PL EU3 SPJ50384 and later
i-SENSYS MF6530 EU2 HAC02001 and later
i-SENSYS MF6550 EU2 NAC02001 and later
i-SENSYS MF6540PL EU2 PAC02001 and later
i-SENSYS MF6560PL EU2 QAC02001 and later
i-SENSYS MF6580PL EU2 SAC02001 and later
i-SENSYS MF6550 EU3 VAC02001 and later
i-SENSYS MF6560PL EU3 WAC02001 and later
i-SENSYS MF6580PL EU3 XAC02001 and later
- Machines for which both the shape change of the laser shutter and application of grease to the laser shutter arm is carried out
i-SENSYS MF6530 EU1 BAC02945 and later
i-SENSYS MF6550 EU1 DAC02865 and later
i-SENSYS MF6540PL EU1 EAC04003 and later
i-SENSYS MF6560PL EU1 FAC03073 and later
i-SENSYS MF6580PL EU1 GAC02833 and later
i-SENSYS MF6530 EU2 HAC02049 and later
i-SENSYS MF6550 EU2 NAC03737 and later
i-SENSYS MF6540PL EU2 PAC02633 and later
i-SENSYS MF6560PL EU2 QAC03593 and later
i-SENSYS MF6580PL EU2 SAC02105 and later
i-SENSYS MF6550 EU3 VAC03185 and later
i-SENSYS MF6560PL EU3 WAC02665 and later
i-SENSYS MF6580PL EU3 XAC03025 and later
- Machines for which the following are carried out: change of the laser shutter shape, applicatin of grease to the laser
shutter arm, and change of the laser shutter arm shape
i-SENSYS MF6530 EU1 BAC02945 and later
i-SENSYS MF6550 EU1 DAC02865 and later
i-SENSYS MF6540PL EU1 EAC04003 and later
i-SENSYS MF6560PL EU1 FAC03073 and later
i-SENSYS MF6580PL EU1 GAC02833 and later
i-SENSYS MF6530 EU2 HAC02049 and later
i-SENSYS MF6550 EU2 NAC03737 and later
i-SENSYS MF6540PL EU2 PAC02633 and later
i-SENSYS MF6560PL EU2 QAC03593 and later
i-SENSYS MF6580PL EU2 SAC02105 and later
i-SENSYS MF6550 EU3 VAC03185 and later
i-SENSYS MF6560PL EU3 WAC02665 and later
i-SENSYS MF6580PL EU3 XAC03025 and later
- Machines for which the following is carried out: discontinuance of application of grease to the laser shutter arm
i-SENSYS MF6530 EU1 BAC02946 and later
i-SENSYS MF6550 EU1 DAC03161 and later
i-SENSYS MF6540PL EU1 EAC04003 and later
i-SENSYS MF6560PL EU1 FAC03073 and later
i-SENSYS MF6580PL EU1 GAC02833 and later
i-SENSYS MF6530 EU2 HAC02121 and later
i-SENSYS MF6550 EU2 NAC03737 and later
i-SENSYS MF6540PL EU2 PAC02633 and later
i-SENSYS MF6560PL EU2 QAC03593 and later
i-SENSYS MF6580PL EU2 SAC02105 and later
i-SENSYS MF6550 EU3 VAC03185 and later
i-SENSYS MF6560PL EU3 WAC02665 and later
i-SENSYS MF6580PL EU3 XAC03025 and later

Posted on Jan 19, 2010

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