A-1
Appendix A
Maintenance and Upgrades
Replacing the Battery
Changes that you make to your PC1 settings are stored using a Lithium battery when the PC1 is
powered off. When it is time to replace your battery, the PC1 will display the message:
for a few seconds after being powered up. If this happens, you
should replace the battery as soon as possible.
Before you Begin
You’ll need the following items:
z One CR2032 battery which is a 3 volt Lithium coin cell that can be purchased from
Radio Shack and large drug stores.
z A #2 Phillips screwdriver
z A large table with a padded surface to prevent damage: foam or soft cloth
z A pen cap or plastic knife
Replacing the battery may erase the programs and setups that you have created, so back them up
using a MIDI SysEx dump as described on page 4-7. When you are finished, turn off the power
and remove all cables from your PC1 including the power adapter.
Opening your PC1
1. Place your PC1 with the keyboard and front panel down on the padding with the rear
panel jacks facing you.
2. You will see a flat panel about 15 inches long (7 inches long in the PC161) and 4 inches
wide in the bottom of the PC1. Use the screwdriver to remove the 7 screws that fasten
the option panel.
3. Remove the panel by sliding the panel a couple of inches away from you and lifting it
out of the opening.
Installing the Battery
1. Insert your fingernail, a plastic knife, or a pen cap in one of the slots on the top of the
battery’s retaining clip and gently pry the battery loose from the retaining clip, as
shown in Figure A-1. (In the PC161, the battery is very close to the rear panel and may
be hidden behind a cable.)