BU & BU Assy Replacement Procedure.
Applicable to Sony BDP-BX37/S270/S370/S373/S470.
Before BU Replacement.
* Enter Service Mode: Press < OPEN/CLOSE>, < PLAY>,< STOP> and plug in AC Power.
* Inside *Service Mode Menu Select [8] Drive.
* Inside *Drive Select [7] OP Check Menu.
* Inside *OP Check Menu Select [3] dIOP then press 'ENTER'.
* Specification Diop BD: 6mA DVD, CD: 9mA. [If no - IOP out of specification need BU replacement > Optical Block Unit (BU) replace] {If Yes AC Power OFF}.BU (Optical Block) Repair. BDP 5G (BDP-S370) 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 (5GBUJIG) installed in JIG PC’s
# USB memory
# ESD work bench.
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.
BU Adjustment.
* Remove the defective BU from Loading Assy and also remove BU insulator (4pcs)
* Unpack new BU and take OP Data Barcode photo by camera.
* Assemble BU with Insulators to Loading Assy (tighten screw with 2kgf)
* Decode the OP Data Barcode photo using BDBUDEC.exe and save the test data to USB memory (File Name: BuData.txt)
* Enter Service Mode and insert USB memory to USB connector.
* Select [8] Drive > Select [1] Drive OP data Write > Select [2] Mode: 1 or 2 Press ENTER. {Mode: 1 BDP-BX37/S270/S370/S373/S470}{Mode:2 BDP-BX57/S570}
* After Finishing ReWrite OP data > Turn AC Power OFF And confirm dIOP by select [7] OP Check Menu to verify IOP in specification.
* IOP in specification > Turn AC Power OFF.
* Turn Power ON and check playback performance using BD,DVD & CD.
In case of BU assy replacement:
- OP related data for new assy is controlled by BU factory
- All of data is recorded into a barcode label
- The label is put on the assy
- Service parts will be followed
- In service, the data should be read out from problem assy
- The read data should be saved to new assy.
- The label is “DATA MATRIX” format
- The number of data is 91 words
- The method of reading and saving is required when BU and main board are replaced.
- All of BU data on the barcode label is shot by digital camera in order to make a JPEG file of BU data.
- Application software in the PC makes digital data from JPEG file.
- The converted data is stored to USB memory.
- The USB memory is connected to BDP 5G unit.
- In service mode, there is a command to save the data from USB memory to board memory.
PN: J6090212A
Description: BDBUDEC
When instruction to PC, password is required.
[The password will be supplied to only service HQ, and service center name, q’ty and all of software registered information should be maintained by service HQ, and Video will ask to report the registration information.]