WARNING NOT RESPONSIBLE FOR ANY HARM YOU MAY DO TO YOURSELF OR YOUR
KEYBOARD!
The battery on my PC88 died...only intruction I found was to take it
to a service center -- BAD.
So, Here's how I did it.
Turn the PC88 upside down (keys on bottom). Remove all the screws on
the bottom (which is now the top) of the keyboard. Also, remove the
screws on the back which are all in a line on the back (seven of
them). Also, remove the screws which hold the end caps to the bottom.
There are some on the bottom (which you removed) and two on the back.
After this, you can lift the bottom of the keyboard up slightly. You
will probably do as I did and accidently remove a ribbon connector
which has very little play (controls the bottom range of keys on the
keyboard). Don't worry, you can plug this back in later. You will
see on a circuit board the battery. Believe it was a CR2032 (not
sure). I bought a replacement battery at Wal-mart. Gently pull the
battery out and pop in a new one (the positive side of the battery
will be facing away from the battery holder, only partially obscured).
If the ribbon cable popped out, lower the bottom of the keyboard
closer to the assembly, and gently plug it back in.
All that's left is to put the bottom back on, aligning all the screw
holes with their mates. You may have to align the controller wheels a
bit so the holes are realigned, but this wasn't a biggee.
Took me about a half hour because there are so many screws holding the
bottom on! Battery replacement took five seconds
elbolabs
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