Bu Check Flow [Zz]; Bu (Optical Block) Repair Guide - Sony BDP-S485 Service Manual

1-4-3. BU Check Flow [zz] ~

Optical Block Unit (BU) IOP check flow (zz) ~ [Before BU Replacement]
Press
<OPEN/CLOSE>., <PLAY>,<STOP>
Inside *Service Mode Menu
Select [7] OP Check Menu
Select [2] dIOP then press 'ENTER'

1-4-4. BU (Optical Block) Repair Guide

BDP 6G (BDP-S480) series component structure is as same as conventional DVD Players.
However BD player requires precise read out functions and also secure contents Protection
system.
Since above requirement, it is necessary to set/adjust BU data to EEPROM.
The following cases need Adjustments;
(1)Replace BU (MB is original)
(2)Replace MB (BU is original)
(3)Replace both BU and MB
•JIG Requirement
Digital camera (recommend with macro mode)
Barcode decoder (BDPRdec_ver2.0 ) installed in JIG PC's
USB memory
ESD work bench
•Procedure (all cases)
Remarks:
The servo adjustment procedure will be carried out during OP data Writing.
There is no manual adjustment procedure. LD ON TIME history doesn't carry over.
Do not touch any optical block parts, Turn Table and during replacing. BD Laser diode
is very sensitive!
Before BU Replacement
Enter Service Mode
and plug in AC Power
Select [8] Drive
Inside *Drive
Inside *OP Check Menu
Specification dIOP NO
+ -
BD: 6mA
DVD, CD: + - 9mA
YES
AC Power OFF
Refer the diagram
IOP out of specification need BU
replacement
Optical Block Unit (BU) replace
(Flowchart yy)
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BDP-S485
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