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21. MAINTENANCE AND INSPECTION
(2) Battery life of memory card
The battery life of memory card differs depending on the memory capacity. The life
for each memory is shown in Table 21.4.
* Actual value indicates a rough average value and guaranteed value indicates the minimum
value.
The guide for preventive maintenance is as follows.
1) Replace the battery in four to five years even when it has not been used
exceeding the guaranteed value shown in the above table.
2) Replace the battery when it has been used exceeding the guaranteed value
shown in the above table and SM51 is on.
Table 21.4 Battery lives of memory cards
Memory card model name
Battery life [hr]
Guaranteed value (MIN) Actual value (TYP) After SM51 is turned ON
Q1MEM-64S 5256 23652 8
Q1MEM-128S 2628 12264 6
Q1MEM-256S 5256 23652 8
Q1MEM-512S 2628 12264 6
Q1MEM-1MS 7008 23652 6
Q1MEM-2MS 2628 12264 6
Q1MEM-64SE 5256 23652 8
Q1MEM-128SE 5256 23652 8
Q1MEM-256SE 5256 23652 8
Q1MEM-512SE 5256 23652 8
Q1MEM-1MSE 2628 12264 6
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