BDP-BX38, BDP-S280, BDP-S380, BDP-S383 - Sony DVD Service Manual (repair manual). Page 18

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BDP-BX38/S280/S380/S383
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DRIVE  REPAIRING
1-4-1.
 
Preparation
1-4-2.
 
Checking Flow ~ Drive (BU) section ~
‡
ESD
 
Measures 
It is necessary to check the working space ESD condition 
before starting the Drive Part (BU) repairs
The ESD-resistance of BD Laser is weaker than DVD/CD Laser
To prevent ESD destruction, please make sure the working 
space and human ESD.
Drive flowchart
BDP-S380 can play the BD-disc
BLX-104
BDP-S380 can play the DVD/CD-disc
Check Drive Power Supply
CN301 Pin 3: 12V 
 IC309 Pin 1: 5V
Check PS301, PS302
Replace PS when open
Check / replace the FFC cable, then check 
BDP-S380 operates normally
OP FFC cable (1-838-615-11)
Check the Optical Block Unit (BU) by 
service mode. (Flowchart zz)
BU IOP is OK?
Replace the Optical Block Unit (BU)
Optical Block Unit (BU) replace 
(Flowchart yy)
OK
DVD: HLX-513
CD: HLX-A1
NO
YES
NO
YES
YES
NO
NO
NO
SPD  FFC cable (1-838-617-11)
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How to open FFC Holder. Refer below picture.
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