Denso BHT-7500 - Manual (Page 47)

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Chapter 2. Getting Started the BHT and System Mode
Shows the current
backup state in
progress.
Shows the total volume
of data to be backed up.
Now saving data.
Do not remove
batteries until
saving process
complete.
2.3.6 Battery Replacement Notes
■ When is battery replacement needed?
If the "Charge the battery!" or "Replace the batteries!" appears on the LCD, replace the
rechargeable battery cartridge with a fully charged one or replace the dry cells with
new ones, respectively.
If you leave the BHT without replacing the rechargeable battery cartridge or dry cells,
the integrated calendar clock or data will no longer be backed up so that the calendar
clock will stop or the message "Contact your administrator. Note the error number.
(XXXX)" will appear on the LCD.
Be sure to turn the BHT off before battery replacement.
Replace the battery cartridge quickly. Load a charged battery cartridge or new dry
cells within 3 minutes after the removal to avoid data loss.
After battery replacement, turn the BHT on and check its operation.
■ If you will use the BHT more than one time per month:
Keep the battery cartridge loaded in the BHT.
■ If you will not be using the BHT for more than one month:
Remove the battery cartridge from the BHT and then store the BHT. To do so, be sure
to follow the procedure given below.
(1) When removing the battery cartridge:
Press the PW key for more than 3 seconds to turn the power off.
The following message will appear on the LCD and the BHT will start backing up
data. After completion of the backup operation so that the message disappears,
remove the battery cartridge.
(The backup operation may take several tens of seconds depending upon the
volume of data to be backed up.)