On 15-May-99, Doug Spence wrote:
I've located the battery, too. Looks to be
non-rechargable, and it's
soldered to the motherboard. Looks like a pink capacitor. TL-5101.
The Compass uses a similar battery, listed as TL-2150, which is a 3.6V
lithium cell (labeled "SIZE 1/2 AA"). I can't see the specs of the
1520's battery without removing it, but does anyone know if such
batteries are still made?
The AC adapter actually slides out of the case. It has
battery
terminals on its inside end. Obviously the battery pack must fit
into the same space when the machine is on the move. There's some
other kind of connector on the end of the AC adapter, too, but I
don't know what that's for. Also, why is there an external 16VDC
connector if the battery slides into the case?
I suspect that the connector on the inside end of the AC adapter joins
with the external 16VDC connector via a cable, so that AC power can be
used with a battery installed in the unit, allowing recharge.
Maybe.
There are four banks of RAM on little boards, kind of
like SIMMs but
not. The board edges seem to be soldered to the motherboard. There
are four empty spaces for more of these things. 30 pins each. Or
is that what 30-pin SIMMs are supposed to look like? :)
Actually, it turns out these are SIPPs. Never had a machine with SIPPs
before. Didn't know what they were.
Yes, I am talking to myself.
--
Doug Spence
ds_spenc(a)alcor.concordia.ca
http://alcor.concordia.ca/~ds_spenc/