Toshiba e-STUDIO2008A Service Manual page 498

7.5.5 To allow the equipment to detect a recycled unit as a new one
after replacement
To recycle an old EPU after replacement and also let the equipment detect that it is a new one, the
supply items in the EPU and the IC chip data in the EPU board must be replaced.
In this case, the EPU board itself must be replaced with a new one (service part) or the IC chip data
must be overwritten using a jig.
If the EPUs are replaced in the 20 PM Support Mode instead of the 21 EPU Replacement Mode noted
in this chapter, the replacement of the EPU board and the overwriting of the IC chip data are not
necessary.
Information in the IC chip can be confirmed with FS-08-4555 (Information check of new or old EPU
memory). The display of [0xff00(NEW)] indicates a new IC chip while [0x00ff(OLD)] indicates a used
one. A hexadecimal value ending with "-" indicates that invalid data have been entered. In this case,
rewriting with a jig is required.
e-STUDIO2008A/2508A/3008A/3508A/4508A/5008A
PREVENTIVE MAINTENANCE (PM)
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