Epson Equity LT Product Support Bulletin(s) - Page 7

When the LOW BATTERY - setup

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NUMBER: S-0055 PAGE: 3 of 4 How to get the most out of the Equity LT It is possible to extend the working battery charge time of the Equity LT by following a few simple guidelines: 1) Turn the hard disk drive power OFF. For most applications, constant access to the hard disk drive is not required. Once the application is loaded into RAM, wait for the drive access LED to go out and turn the HDD power switch off. When you're ready to save your work, turn the HDD power switch back on, wait for the HDD to spin up and then save. Another alternative is to boot the LT from floppy with the HDD power off. The power-on self-test will take longer, and a "1701-C" error will display. This is normal this situation and should be ignored. Then you can l:cess your application from the FDD. 2) Set the backlight period to 0.5 minutes. This is accomplished from the SETUP program. If you pause to think about what you're doing, the backlight will turn off after 30 seconds. This drops power consumption by as much as 580mA. Also, set the brightness and contrast controls as low as is comfortable. The difference between 1/2 brightness and full brightness can be as much as 445mA. 3) Run at 4.77 MHz. The difference in power consumption between 4.77 MHz and 10 MHz is 70-80mA. 4) Completely discharge the battery. From time to time, let the battery drain all the way down. When the LOW BATTERY LED starts flashing, save your work in progress (if any) and then leave the LT powered up. Eventually, the power supplied by the battery will drop below the threshold level and the system will power down. Then give it a full (12 hour) recharge. This will help to minimize the memory effect.

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NUMBER:
S-0055
PAGE:
3 of 4
How to get the most out of the Equity LT
It is possible
to extend the working
battery charge time of
the Equity LT by following a few simple guidelines:
1) Turn the hard disk drive power OFF. For most applications,
constant access
to the hard disk drive is not required.
Once the
application is
loaded into RAM,
wait for the
drive access
LED to go out and turn the
HDD power switch
off.
When you're ready
to save
your work,
turn the HDD
power switch back on, wait for the HDD to spin up and then
save.
Another alternative is to boot the LT from floppy
with the HDD power off.
The power-on
self-test will take
longer, and a "1701-C" error will display.
This is normal
this
situation and
should be
ignored.
l:cess
your application from the FDD.
Then you can
2) Set
the backlight
period
to 0.5 minutes.
This is
accomplished from the SETUP program. If you pause to think
about what you're doing, the backlight will turn off after
30 seconds.
This drops
power consumption by as much as
580mA.
Also,
set the brightness and contrast controls as
low as is
comfortable.
The difference
between 1/2
brightness and full brightness can be as much as 445mA.
3) Run at 4.77 MHz.
The difference
in power
consumption
between 4.77 MHz and 10 MHz is 70-80mA.
4) Completely discharge the battery.
From time to time, let
the battery drain all the way down.
When the LOW BATTERY
LED starts flashing,
save your work in progress
(if any)
and
then leave the LT powered up.
Eventually,
the power
supplied by the battery will drop below the threshold
level and the system will power down.
Then give it a full
(12 hour) recharge.
This will help to minimize the memory
effect.