BDV-EF220, BDV-EF420, HBD-EF220, HBD-EF420 - Sony Audio Service Manual (repair manual). Page 9

EF220

4-295-427-7[]

EF420

4-295-427-8[]

CAPACITOR  ELECTRICAL  DISCHARGE  PROCESSING
When checking the board, the electrical discharge is necessary for 
the electric shock prevention.
Connect the resistor to both ends of respective capacitors.

• Switching 

regulator

 

C207, C201, C402, C503, C504, C507

:/2 W

NOTE  THE  BD  DRIVE (BPX-7)  PARTS  REPLACING
The mechanism blocks except optical device of BD drive (BPX-7) 
are chiefl y composed of the following parts.
• HOLDER, 

CHUCK 

ASSY

• LOADING 

ASSY

• COVER, 

DRIVE

These parts are produced by two venders, it is not compatible. 
Therefore, HOLDER, CHUCK ASSY and LOADING ASSY 
are supplied by one pair as repair parts. Please exchange both
HOLDER, CHUCK ASSY and LOADING ASSY at the same 
time.

COVER, DRIVE need not be exchanged at the same time.

Note 1: The laser caution label is not pasted to LOADING FOR SER-

VICE. Please peel off an original laser caution label, and paste 
it to LOADING FOR SERVICE when you use LOADING FOR 
SERVICE.

Note 2: If laser caution label is a condition of the figure below, 
 

it is acceptable.