Tascam RC-898 - Manual (Page 17)

Section 3.5 - Memory and batteries
3-3
3.5 Memory and batteries
As you have noticed, the RC-898 requires no
power supply of its own, drawing its power from
the DTRS units to which it is connected.
Location memories and configuration settings are
stored using a battery backup system. The battery
should provide power for several years of use.
When the battery eventually degrades to the point
where it cannot provide enough power to retain
settings, the message
Memory Error will
be shown on the diaply screen (this can be
removed by pressing the
ESCAPE key).
When this message appears, all memories (loca-
tion memories and configuration settings) are
cleared and reset to the default settings.
If you see this message, contact your TASCAM
dealer for details of battery replacement. Do not
attempt to replace the battery by yourself.