Lenovo G505 Notebook - Manual (Page 37)

Lenovo G400/G500/G405/G505/G410/G510
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The following table shows the function of each combination of Fn with a function
key.
Table 4. Fn key combinations
Fn + PgUp: Enable/Disable the scroll lock.
Fn + Home: Activate the pause function.
Fn + End: Activate the break function.
Fn + PgDn: Activate the insert function.
Fn key combinations