SHARP SP1652 Technical Report

Date: Dec. 2, 1993

OPTION : SF-A54

1. AUOSW (ADF OPENING AND CLOSING SWITCH) MALFUNCTION
(DOES NOT TURN ON).

2. SEP ARATION BELT PARTS CODE CORRECTION.

3. PRESSING ROLLER STAY CHANGE
(FOR COMPATIBI LTI Y W ITH OTHER MODELS) .

No. : SP-1652

1. Auosw (ADF opening and closing switch) malfunction (does not turn on.)

1.General: When the left side of the SF-A54 (original copy feeding cover, etc.) is pressed during
operations, the right side raises up. The SF-A54 assumes that this means that the DF
cover is open, and shuts down. As a temporary measure, a spacer has been added in
the space between the ADF and the area to the left on the front frame side of the
machine (approximately 3 mm). As a permanent measure, a round hole has been
added to the plate where the spacer has been added, and a rubber support has been
added.

2.Reason: The AUOSW (ADF opening and closing switch) does not turn on.

3.Description: Temporary measure: A spacer has been added in the space between the ADF and the

left of the front frame side of the machine. The addition of the
spacer prevents the right side from raising up, even if the left side
is pressed down.

Standard line.

Spacer.

Standard line.

Magnetic catch.

Spacer.
(0CW2158P505A/)

Permanent measure: A round hole has been added to the plate where the spacer has

been added, and a rubber support has been added (from 1993
February production).

SHARP CORPORATION Reprography Division

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Green

C

Added hole.

Note: The rubber support cannot be installed on the old side plate F due to the

caulking.

4.Effective time: (Factory action):

Temporary measure:

Between 1992 November production and 1993 January production.

Permanent measure:

From 1993 February production.

* Note: In addition to the problem of the AUOSW not turning on as described above, the

same problem has occurred, caused the right side of the front of the ADF
raising up due to distortion of the hinge during installation of the A54.
To prevent this from happening, the following installation points are provided.

Changed side plate F1 assembly
(a round hole has been added).

Added rubber support.

[Installati on poi nt s ]

➀ Installation procedures should be carried out in proper sequence. (Please refer to

the installation manual.)

➁ After installation has been finished, the relative positions of the magnetic catch and

the MG plate should be checked. (If the relative positions are in line, the installation
is OK. If they are not in line, move on to 3)below.)

SF-2022

Improper
alignment.

➂ Loosen the fixing screw of the hinge ADF on the right side.
➃ Next, press the hinge in the direction which will properly align the magnetic catch

and the MG plate, and tighten the fixing screw. Once again check the relative
positions of the magnetic catch and the MG plate, to make sure they are properly
aligned.

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