These are some common tools used to work on this device. You might not need every tool for every procedure.
For information regarding troubleshooting issues, please check out Bosch 3727DEVS Troubleshooting
Released in October of 2003, the Bosch 3727DEVS features a variable speed selector switch with speeds from 4,500 to 12,000 opm (orbits per minute), a 6" sanding pad, and an on-board filtering system. The sander can function as a polisher and it uses a hook-and-loop disc attachment.
Known failure modes include: stripped socket head cap screw, clogged microfilter, and damaged electrical cord.
In order to identify the sander, one should note the Bosch logo on one side and the "3727" label on the other.