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Chapter 13: Replacement of the JW-21MN
When you want to change the JW-21MN due to an operation fault (lighting UNT.E lamp) etc., follow the
procedures below.
Make sure to store the set parameters onto a floppy diskette using a support tools. (See
the next page)
Operation procedure
Turn "OFF" the JW20/JW20H/JW30H's power
Remove the cables from the JW-21MN
Remove the JW-21MN from the rack panel
Set the switches of the new JW-21MN
Install the new JW-21MN
Connect the cables to the new JW-21MN
Turn "ON" the JW20/JW20H/JW30H's power
Load the parameters.
Start
End
13-1
Loosen one retention screw and
take out from the rack panel.
(See chapter 11)
(See page 5-1)
Load the parameters stored in the
floppy diskette into the new JW-21MN
and write in the EEPROM, then start
operation. For details, see chapter 14.
13
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