Sony DVP-NC625 Service Manual page 95

2-2. Operation of Auto Self Check
When the Self Check mode becomes active at the AC Power ON
or by key input, the test display of the following steps (1) to (4) is
repeated.
(1) FLD and LED all ON (for 5 seconds)
DVD
VCD
MP3
ALL DISCS
(2) MODEL display (for 2 seconds)
DVD
VCD
MP3
ALL DISCS
(3) Version display (for 2 seconds)
DVD
VCD
MP3
ALL DISCS
(4) ROM creation date display (for 2 seconds)
DVD
VCD
MP3
ALL DISCS
6-13