HBD-E190, HBD-E290, HBD-E490, HBD-E690 - Sony Audio Service Manual (repair manual). Page 4

 ..............................................   5

2-1. Disassembly 

Flow 

...........................................................  12

2-2.  How To Bend FFC ..........................................................   13
2-3.  Left Panel, Right Panel ...................................................   14
2-4. Loading 

Panel 

.................................................................  14

2-5.  Top Panel, Front Panel Assy ...........................................   15
2-6.  Top Chassis, KARAOKE Board (RU), 

POWER KEY Board, PANEL Board .............................   16

2-7.  BD Drive (BPX-7) ..........................................................   17
2-8. MB148 

Board 

.................................................................  17

2-9.  Switching Regulator (SWR1) .........................................   18
2-10. AMP Board .....................................................................   18
2-11.  Optical Pick-up Block (KEM480AAA), 
 Wire 

(Flat 

Type) 

..............................................................  

19

 .............................................................   20

 ..........................................   28

5-1.  Block Diagram - SERVO Section - ................................   29
5-2.  Block Diagram - MEMORY/HDMI Section - ................   30
5-3.  Block Diagram - MAIN Section - ...................................   31
5-4.  Block Diagram - AMP Section - .....................................   32
5-5.  Block Diagram - POWER SUPPLY Section - ................   33
5-6.  Printed Wiring Board - MB148 Board (Side A) - ...........   35
5-7.  Printed Wiring Board - MB148 Board (Side B) - ...........   36
5-8.  Schematic Diagram - MB148 Board (1/9) - ...................   37
5-9.  Schematic Diagram - MB148 Board (2/9) - ...................   38
5-10.  Schematic Diagram - MB148 Board (3/9) - ...................   39
5-11.  Schematic Diagram - MB148 Board (4/9) - ...................   40
5-12.  Schematic Diagram - MB148 Board (5/9) - ...................   41
5-13.  Schematic Diagram - MB148 Board (6/9) - ...................   42
5-14.  Schematic Diagram - MB148 Board (7/9) - ...................   43
5-15.  Schematic Diagram - MB148 Board (8/9) - ...................   44
5-16.  Schematic Diagram - MB148 Board (9/9) - ...................   45
5-17.  Printed Wiring Board - AMP Board (Side A) - ...............   46
5-18.  Printed Wiring Board - AMP Board (Side B) - ...............   47
5-19.  Schematic Diagram - AMP Board (1/3) - .......................   48
5-20.  Schematic Diagram - AMP Board (2/3) - .......................   49
5-21.  Schematic Diagram - AMP Board (3/3) - .......................   50
5-22.  Printed Wiring Boards - PANEL Section - .....................   51
5-23.  Schematic Diagram - PANEL Section - ..........................   52

5-24.  Printed Wiring Board - TUNER2 Board - ......................   53
5-25.  Schematic Diagram - TUNER2 Board - .........................   53
5-26.  Printed Wiring Board - KARAOKE Board - ..................   54
5-27.  Schematic Diagram - KARAOKE Board - .....................   54

6-1. Panel 

Section 

...................................................................  80

6-2.  Front Panel Section .........................................................   81
6-3.  Chassis Bottom Section ..................................................   82
6-4. Chassis 

Section 

...............................................................  83

6-5.  BD Drive Section (BPX-7) .............................................   84

  ..............................   85

NOTES  ON  CHIP  COMPONENT  REPLACEMENT
• 

Never reuse a disconnected chip component.

• 

Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.

FLEXIBLE  CIRCUIT  BOARD  REPAIRING
• 

Keep the temperature of soldering iron around 270 °C during 
repairing.

• 

Do not touch the soldering iron on the same conductor of the 
circuit board (within 3 times).

• 

Be careful not to apply force on the conductor when soldering 
or unsoldering.

This appliance is classified as a 
CLASS 3R LASER product. 
Visible and invisible laser radiation 
is emitted when the laser protective 
housing is opened, so be sure to 
avoid direct eye exposure.

This appliance is classified as a 
CLASS 1 LASER product. This 
marking is located on the rear 
exterior.

The nameplate is located on the 
bottom exterior.

This marking is located on the laser 
protective housing inside the 
enclosure.