Toshiba MMY-MAP1004HT5P Service Manual page 277

EEPROM Location Diagram
The EEPROM (IC503, IC10) is mounted on an IC socket. Use a pair of tweezers, etc. to remove it. When installing
it, adjust its orientation as shown in the diagram below.
During EEPROM removal/installation, take care not to bend IC leads.
P.C. board (MCC-1402)
EEPROM(IC10)
P.C. board (MCC-1570)
IC503
EEPROM(IC503)
P.C. board (MCC-1403) EEPROM(IC10)
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When installing the EEPROM, align
its notch with that of the IC socket.
IC socket Notch EEPROM
Notch