What triggers Backup Mode?
Any of the conditions which would require the system to run off the backup battery trigger Backup Mode. The main cause of going into “Backup Mode” is hot-inserting a PC Card, or in other words, inserting it while the machine is on. Most PC Cards cause a “spike” of current usage when they are first inserted which quickly settles down to their normal range. Often the spike is quite high; many cards draw over 100ma more than their operating current when first inserted. This quickly goes down to their normal operating specs, but even so, this very short current usage spike causes a voltage dip, which makes the 200LX think the batteries are very low. To prevent data loss, it hibernates. The main culprits are 28.8Kbps and 33.6Kbps modems, or Ethernet cards. Occasionally flash cards have been known to trigger Backup Mode as well, but this is much more rare. Most 14.4 modems will not shut down the 200LX.
