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their lithium polycarbon monofluoride batteries have a longer life in low-current
battery backup applications. I suggest you buy one of the following cells, which
are available from element14.com, mouser.com, digikey.com and many other
electronic component distributors. Be sure to order the plain coin (AKA button)
cell configuration, without any extra leads:
Panasonic BR 2032/BN (lithium polycarbon monofluoride).
Panasonic CR 2032 (lithium manganese dioxide)
Varta CR 2032 (lithium manganese dioxide)
Wash your hands before handling the batteries. Any contamination of the
insulating gasket between the positive and negative contacts with salty water or
other residues might cause an electrical path which would discharge the battery
prematurely.
Small batteries such these are very dangerous if a child or pet swallows them,
so please don't leave them lying around.
2 - Prepare a static-free work environment.
Don't wear plastic soled shoes, or synthetic socks. Assuming your clothing is
cotton, sit only on a wooden chair or one covered with cotton. If the chair is
covered in synthetic material, place a cotton towel over it.
3 - If your machine has four C-cell batteries in the battery compartment, remove
them. Place the Devil Fish upside-down on a cotton cloth. Plug a 6.5mm audio
lead into the Audio Out socket and tuck the connector of the other end of the lead
under your leg as you sit on the chair. This helps ensure that no significant
voltage difference can develop between your body and the machine you are about
to work on.
Unscrew the 7 screws in the bottom of the machine and lift the back off gently.
Take note which screw came from each hole. Sometimes, these screws are
chosen to deal with worn-out holes in the support pillars of the top part of the
case.
4 - The 2032 battery holder is tucked into the front-right corner of the machine. Any
old battery can be unclipped and a new one clipped in, with the main metallic part
of the battery, which is +, facing upwards.
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