SHARP SP1967 Technical Report

Date: Nov. 6, 1995

COPIER : Z-20

No. : SP-1967

1.REGARDING BLANK AREAS ON COPIES

2.REGARDING CE-MARK REGULATIONS.

1. Regarding blank areas on copies

1.Model Name: Z-20/25/27

2.General: There may be blank areas on copies when the machines operate in high humidity. This

was the subject of Technical Report SP-1885/1904. There are some further
improvements planned to the parts involved, however. Please note the following.

3.Description: In order to stabilize electrical discharge from the corona in the charger, the shape of the
charger holder has changed as follows.

Before the change

The portion marked in black
has been removed.

Saw teeth

Charger holder

Cross-section of the holder

4.Action: From the middle of August, 1995 production (running change).

After the change

In order to distinguish the old and new parts,
“H1" has been printed on the new parts.

SHARP CORPORATION Reprography Division

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Green

C

2. Regarding the CE mark.

1.Model Name: Z-20/25/27, 200 V version.

2.General: In compliance with CE mark regulations in Europe, the following improvements are

being made. Although the changes are only required in Europe, they will take effect in
all 200V regions.

3.Description In order to improve the noise damping qualities of the unit, the following parts will be
altered or added.

(1) A main PWB capacitor has been added.

Chip capacitor, 22000 PF

Close-up of the PWB

R713

Chip capacitor 560 PF

CN202

(2) A capacitor has been added to the power supply PWB.

Close-up of the PWB

Added chip capacitor, 22000 PF (in two locations)

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PD101 and PD102