Toshiba f99g714 Service Note

BSI(Service Note) TOSHIBA

TOSHIBA TEC CORPORATION

2-4-1, Shibakoen, Minato-ku, TOKYO, 105-8524 JAPAN

BSI No

F99G714

SUBJECT

Change to Start Key in the Control-panel

MODEL

CATEGORY

Other countermeasures

From Dec. 1998

CONTENT

As a countermeasure, the following parts have been changed.

[Changed/Added Part No.]

Refer to No.

P-I: Page-Item P: Contents of Change I: Interchangeability R: Reasons for Change

FC70

FIELD APPLICATION

Others

FACTORY APPLICATION

P-I Before Change After Change Note P I R FAA

01 1-34 4402429320

CONTROL PANEL

02 1-34 4402429330

CONTROL PANEL

03 70-11 4402429450

PW BOARD

04 70-12 4402429460

POLYESTER FILM

4401922290 CONTROL PANEL 4401922300 CONTROL PANEL 4401922310 PW BOARD 4401922320 POLYESTER FILM

Japan only C B D North America

only

---- C B D -

Date

99/08/16

UNIT

Display Unit

1144-016-086

C B D -

[Error Content]

The Start key does not come ON.

[Cause]

In places where there is a lot of dust, the seal material has been broken when the START key has been pressed more often than necessary. So, the adhesive material is caused to flow and dust at the time of installation from the film hole (04) between the fixing and the driving face, which creates insulation. The result is that START key cannot be turned ON.

[Treatment]

In order to lessen the damage to the seal material caused when the START key is pressed, the 1. driving face of the switch on the board (03) has been changed to a flat one. The film (04) hole has been eliminated and the dust cannot get in.2.

START key

BSI No. F99G714 Page 2

Sectional view

Adhesive material

Driving face Fixing face

START key

Seal material