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| - | [* black] Insert wisdom here. |
|---|---|
| + | [title] Controls board |
| + | [* black] Remove a single screw from the controls board. (It is not necessary to release the small ribbon from its socket on the other side.) |
| + | [* black] With a spudger, the controls board can now be lifted off the pegs which retain it within the top assembly. |
| + | [* black] On the hidden side of th board is a small rechargeable lithium cell which maintains the time and settings when the main battery has been removed. Measure its voltage. |
| + | [* black] If the voltage reads less than 2V it may be permanently damaged and will be unable to maintain the time or settings over a main battery change. It is very important to replace it only by another rechargeable lithium cell, not a regular lithium button cell, which would probably leak and cause damage. |
| + | [* black] On reassembly you may have to rotate the function wheel until it engages with the function switch on the board. |