BSI(Service Note) TOSHIBA
TOSHIBA TEC CORPORATION
2-4-1, Shibakoen, Minato-ku, TOKYO, 105-8524 JAPAN
BSI No
F97H991
SUBJECT
Key CPU(PWA-DSP) Changed to Mask ROM Type
MODEL
CATEGORY
To improve the productivity
From Jul. 1997
CONTENT
The key CPU on the display PC board has been changed from the one-time PROM type to the mask
ROM type. At the same time, the IC sockets are deleted, the key CPU is directly attached to the PC
board.
[ Changed Parts Number ]
Key CPU
Key CPU 4402325390
IC Socket 4843321159
5560, 6560, 7560, 7660, A75
FACTORY APPLICATION
Current New Remarks Interchangeability
IC-154KEY-00
SKT-DICS-64A
FIELD APPLICATION
Others
3040571402
TMP91C640N-2227
----- Deleted --
IC4 E
Date
97/09/05
DTM-F7606
UNIT
Display Unit, Electrical Circuit
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