Toshiba f97i005 Service Note

BSI(Service Note) TOSHIBA

TOSHIBA TEC CORPORATION

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

BSI No

F97I005

SUBJECT

Change of PH Kit

MODEL

CATEGORY

To improve the reliability

UF710271

CONTENT

Error Content If laser diode (LD) within the PH upper assembly of PH kit (01) does not emit light, there is a possibility that CF3F80 (SOS undetection) may occur.

Cause The laser diode (LD) is subject to interior deterioration due to fault manufacturing.

FC70

FIELD APPLICATION

To be applied when necessary

FACTORY APPLICATION

Date

UNIT

Optical

97/09/26

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Countermeasure The laser diode (LD) manufacture process has been changed, and the faulty manufacturing eliminated. In increase the reproducibility of the thin wire together with this change, the electrical circuit PH analog board (PWB-JA) included in the PH kit has been changed. To distinguish between the current and new parts, a lot label has been attached to the PH assembly. Current lot label : " D ***** " New lot label : " E ***** "

Page

No. Current New New Part No. Interchangeability

7 25 4402404530 4402429150 P/H KIT B

PH upper assembly

BSI No. F97I005 Page 2

Lot label

PH lower assembly