DAV-TZ215, DAV-TZ715, HBD-TZ215, HBD-TZ715 - Sony Audio Service Manual (repair manual). Page 3

  .............................................   3

2-1. Disassembly 

Flow 

...........................................................   6

2-2. Case 

(KZ) 

........................................................................   7

2-3.  Loading Panel Block .......................................................   8
2-4.  Front Panel Block ...........................................................   8
2-5.  FL Board, USB KEY Board, KZ-USB Board ................   9
2-6.  KEY-SW Board, P-SW Board ........................................   10
2-7.  Back Panel Block ............................................................   11
2-8.  DVD Mechanism Deck (CDM85MB-DVBU102) .........   12
2-9. MAIN 

Board 

...................................................................  13

2-10. POWER Board ................................................................   14
2-11. FFC Holder .....................................................................   15
2-12.  Optical Pick-up (KHM-313CAA) ..................................   16
2-13. Belt ..................................................................................   16
2-14.  DC Motor (Loading) (M001), MS-203 Board ................   17
2-15.  How to Bend Wire (Flat Type) ........................................   17

TEST  MODE 

 ............................................................   18

ELECTRICAL  CHECKS 

 ......................................   21

5-1.  Block Diagram - SERVO Section - ................................   22
5-2.  Block Diagram - VIDEO Section - .................................   23
5-3.  Block Diagram - AUDIO Section - .................................   24
5-4.  Block Diagram - AMP Section - .....................................   25
5-5.  Block Diagram - POWER Section - ...............................   26
5-6.  Printed Wiring Board - MAIN Section (1/2) - ................   28
5-7.  Printed Wiring Boards - MAIN Section (2/2) - ..............   29
5-8.  Schematic Diagram - MAIN Section (1/8) - ...................   30
5-9.  Schematic Diagram - MAIN Section (2/8) - ...................   31
5-10.  Schematic Diagram - MAIN Section (3/8) - ...................   32
5-11.  Schematic Diagram - MAIN Section (4/8) - ...................   33
5-12.  Schematic Diagram - MAIN Section (5/8) - ...................   34
5-13.  Schematic Diagram - MAIN Section (6/8) - ...................   35
5-14.  Schematic Diagram - MAIN Section (7/8) - ...................   36
5-15.  Schematic Diagram - MAIN Section (8/8) - ...................   37
5-16.  Printed Wiring Board - FL Board - .................................   38
5-17.  Schematic Diagram - FL Board - ....................................   39
5-18.  Printed Wiring Boards - KEY Section - ..........................   40
5-19.  Schematic Diagram - KEY Section - ..............................   41
5-20.  Printed Wiring Board - POWER Board - ........................   42
5-21.  Schematic Diagram - POWER Board - ..........................   43

6-1. Overall 

Section 

...............................................................  55

6-2.  Front Panel Section .........................................................   56
6-3.  Front Boards Section ......................................................   57
6-4. Chassis 

Section 

...............................................................  58

6-5.  DVD Mechanism Deck Section
 (CDM85MB-DVBU102) 

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

59

  ..............................   60

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.

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.

LASER DIODE  AND  FOCUS  SEARCH
1.  Open the case and turn POWER on with no disc inserted.
2. Confi rm that the following operation is performed while ob-

serving the objecting lens from the clearance of DVD mecha-
nism deck.
1)  Confi rm that laser beam is spread.
2)  Up and down motion of the objective lens. (2 times)

ON  CLEANING  DISCS, DISC/LENS  CLEANERS
Do not use cleaning discs or disc/lens cleaners (including wet or 
spray types). These may cause the apparatus to malfunction.

IMPORTANT  NOTICE
Caution: This system is capable of holding a still video image or on-
screen display image on your television screen indefi nitely. If you leave 
the still video image or on-screen display image displayed on your TV 
for an extended period of time you risk permanent damage to your tele-
vision screen.
Projection televisions are especially susceptible to this.