![](/images/new-backgrounds/1122220/122220325x1.webp)
Board Layout
B.2 Function Button board
<Front layout>
Figure B-2-1-1 Function Button board layout Mainstresam (Front)
<Back layout>
Figure B-2-1-2 Function Button board layout Mainstresam (Back)
Table B-2-1 Function Button board connectors
| Location | Function |
(01) | SW1 | Music Silence Button |
(02) | SW2 | Media Player Button |
(03) | SW3 | Music Play / Pause Button |
(04) | SW4 | Music Stop Button |
(05) | SW5 | Music Backward |
(06) | SW6 | Music Forward |
(07) | J1 | MMB board (Mainstream) to M/B connector |
Satellite M300 and Satellite Pro M300 Maintenance