User Manual of DVR-1670B
Page 104
3)
Old player SDK (playm4.dll)
Notes:
1)
Place the DVR in well ventilated space so that it operates within the allowed range of
temperature and humidity as in specification.
2)
If the circuit board is wet, dust on circuit board can cause a short circuit. The circuit board,
plug and socket, housing fan and housing should be cleaned by brushing regularly.