41956001TH Rev.1
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Oki Data CONFIDENTIAL
2.12 Operation at Power-on
2.12.1 Self-diagnostic test
(1)
Initial test
The following checks are automatically performed at power-on.
(a) ROM check
(b) RAM check
(c) EEPROM check
(d) Flash ROM check
(e) Mechanical check
(f ) Option unit check
(2)
ROM check
ROM checking is performed by calculating a HASH value.
(3)
RAM check
(a) RAMs are checked by type. Out-of-specification RAM is judged as an error.
(b) Each slot’s RAM is checked by read-after-write operation.
(4)
EEPROM Check
Specific data stored at a fixed address of EEPROM is checked.
(5)
Flash ROM Check
The flash ROM format is checked. Unformatted ROM is formatted after read-after-write
checking.
(6)
Option Unit Check
Before the printer goes into the operation mode, the presence of the option units (e.g., the
HDD, NIC, option trays, duplex unit and finisher) is checked.
Содержание C9300 Series
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