Sony BDP-S300 - Blu-Ray Disc Player, Service Manual, Page: 63 / 88

5-3
Flowchart No.3
Drive does not operate normally
Are 12V and 5V supplied to the drive?
Is P303 fuse (5V) on power board OK?
Yes Yes
Check/replace the power harnesses (PBD-003).
If not improved by replacement, replace the Power board
Replace the Main board
Is ATAPI reset?
Is connector CN1802 1pin on main board “H”?
No
Replace the power board. If the fuse blows again,
5V system in drive is faulty. Replace the drive
Check/replace the drive flexible cable (MBD-003).
If not improved by replacement, replace the Drive.
If not still improved by replacement, replace the Main board.
No
No
Main Set, Power Supply Section