Denso BHT-202Q-CE Operator's Manual page 27

Cold-booting the BHT
If a problem persists even after warm-booting the BHT, cold-boot the BHT.
Cold-booting the BHT will erase all data stored in the RAM. It is
recommended that important data be saved into the FLASH folder or host
computer.
Cold booting procedure
Turn the BHT off. While holding down the reset button with the stylus, press the
power key and then release both buttons. Press the power key again, and the BHT
cold-boots.
Contents of the memory after warm-/cold-booting the BHT
Data in the FLASH folder
Data in other folders
Contents of the Registry
Data being edited
If the Registry has been backed up*, that backup will apply after cold booting.
(Note)
*
When the BHT is on, pressing the power key
with the SF/ALP (SF) key held down displays
the screen shown at right and starts backing
up the Registry.
After warm booting
Retained
Retained
Retained
Erased
After cold booting
Retained
Erased
Erased
(Note)
Erased
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