BDV-EF220, BDV-EF420, HBD-EF220, HBD-EF420 - Sony Audio Service Manual (repair manual). Page 5

The laser diode in the optical pick-up block may suffer electro-
static break-down because of the potential difference generated by 
the charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also 
use the procedure in the printed matter which is included in the 
repair parts.
The fl exible board is easily damaged and should be handled with 
care.

NOTES  ON  LASER  DIODE  EMISSION  CHECK
The laser beam on this model is concentrated so as to be focused 
on the disc refl ective surface by the objective lens in the optical 
pickup block. Therefore, when checking the laser diode emission, 
observe from more than 30 cm away from the objective lens.

UNLEADED  SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution:  Some printed circuit boards may not come printed with 

the lead free mark due to their particular size)

Unleaded solder has the following characteristics.
•  Unleaded solder melts at a temperature about 40 °C higher 

than ordinary solder.

 

Ordinary soldering irons can be used but the iron tip has to be 
applied to the solder joint for a slightly longer time.

 

Soldering irons using a temperature regulator should be set to 
about 350 °C.
Caution: The printed pattern (copper foil) may peel away if 

the heated tip is applied for too long, so be careful!

• Strong 

viscosity

 

Unleaded solder is more viscous (sticky, less prone to fl ow) 
than ordinary solder so use caution not to let solder bridges 
occur such as on IC pins, etc.

•  Usable with ordinary solder
 

It is best to use only unleaded solder but unleaded solder may 
also be added to ordinary solder.

J-6090-199-A

BLX-104

Single Layer

J-6090-200-A

BLX-204

Dual Layer

J-2501-307-A

CD (HLX-A1)

J-2501-305-A

HLX-513

Single Layer (NTSC)

J-2501-306-A

HLX-N8

Dual Layer (NTSC)

J-6090-077-A

HLX-506

Single Layer (PAL)

J-6090-078-A

HLX-507

Dual Layer (PAL)

Note: Refer to the service manual of BDP-BX1/S350 (Part No. 9-883-

989-1[]) (page 1-3 to 1-14E) for the use of BLX-104/204.

1. Select 

23.976Hz/1080p.

2.  Play “4.Motion picture”.
3.  Check whether player can play back or not.
4.  Check each outputs.
 Video:
 Composite/S 

Video/component/HDMI.

 Audio:
 Speaker 

out.

*  When 1080/24p monitor is nothing, 1080i (59.94Hz or 50Hz) 

can use instead of 1080/24p.

 

However this is temporary correspondence.

1.  Select 1080i (59.94Hz or 50Hz).
2.  Play “4.Motion picture”.
3.  Check whether player can play back or not (Check the picture 

and sound output).

Check whether player can play back or not (Check the sound out-
put).

1.  After displayed Main Menu, select “1.Video Signal”.
2.  Play “1.Color bar 100%” (Check the picture and sound out-

put).

3.  Return to Menu.
4.  Play “Demonstration 4:3” or “Demonstration 16:9” (Check the 

picture and sound output).

NOTE  OF  REPLACING  THE  IC101,  IC501  AND  IC8001  
ON  THE  MB148  BOARD
IC101, IC501 and IC8001 on the MB148 board cannot exchange 
with single. When these parts are damaged, exchange the complete 
mounted board.

NOTE  OF  REPLACING  THE  IC106  AND  IC206  ON  
THE  MB148  BOARD
Replacement of IC106 and IC206 on the MB148 board used in this 
unit requires a special tool.

RELEASING  THE  DISC  TRAY  LOCK
The disc tray lock function for the antitheft of an demonstration 
disc in the store is equipped.

Releasing Procedure:
1.  Press the [

?/1

] button to turn on the system.

2.  Touch the [FUNCTION] sensor to select “BD/DVD”.
3.  Touch the [

x

] and [

Z

] sensors simultaneously and hold down 

unit “DEMO OFF” displayed on the fluorescent indicator tube 
(around 5 seconds).

Note: When “DEMO LOCK” is displayed, the disc tray lock is not re-

leased by turning power on/off with the [?/1] button.

ABOUT  THE  LENS  CLEANING
Do not do the lens cleaning with the cotton bud etc. It causes the 
trouble. 

Note: Refer to SUPPLEMENT-1 for adding SERVICING NOTES 

(TROUBLESHOOTING)