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[Self-diagnosis Display]
(1) ROM Error
Contents: Data of EPROM (IC704) is wrong.
Method: • Check the bridge is possible and if find out a
repair.
• IC704 insert the socket is wrong, if find out a
insert again.
Display:
(2) Internal RAM Error
Contents: Internal RAM of micro computer (IC701) is wrong.
Method: • Perform an initialize. (See Initialize Method.)
• Replace the IC701, if do not restore of the ini-
tialize is not happen another error messages.
Display:
(3) External RAM Error
Contents: Internal data of SRAM (IC702) is wrong.
Method: • Check the bridge is possible and if find out a
repair.
• Perform an initialize. (See Initialize Method.)
• Replace the IC702, if do not restore of these
items the above-mentioned and not happen an-
other error messages.
Display:
(4) DRAM Error
Contents: Internal data of DRAM (IC503) is wrong.
Method: • Check the bridge is possible and if find out a
repair.
Display:
(5) Battery Low
Contents: Exhaust the power of lithium battery (BA501).
Method:
• Replace the BA501.
• Check a point of contact, if do not restore of
replace the BA501.
Display:
[Initialize Method]
Press three buttons
multaneously, and the display of fluorescent indicator tube
changes to "All Initialize!!", and restart system.
– 12 –
[SAVE]
[SYSTEM]
[POWER]
,
, and
si-
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