DAV-DZ770W, DAV-FX999W, TA-WR3 - Sony Audio Service Manual (repair manual)

dav-dz770w, dav-fx999w, ta-wr3 service manual
Model
DAV-DZ770W DAV-FX999W TA-WR3
Pages
23
Size
2.97 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
dav-dz770w-dav-fx999w-ta-wr3.pdf
Date

Read Sony DAV-DZ770W / DAV-FX999W / TA-WR3 Service Manual online

SERVICE MANUAL
Sony Corporation
Home Audio Division
Published by Sony Engineering Corporation
E Model
Australian Model
SURROUND AMPLIFIER
9-879-758-02
2005J16-1
© 2005.10
Ver. 1.1  2005.10
SPECIFICATIONS
TA-WR3
TA-WR3 is the surround amplifier section in DAV-
DZ770W and DAV-FX999W.
Power requirements
Korean model:
220 V AC, 60 Hz
Taiwan model:
120 V AC,
Other models:
220 – 240 V AC, 50/60 Hz 
 50/60 Hz 
Power consumption
50 W
Dimensions (approx.)
260 
×
 260.5 
×
 58 mm 
(w/h/d)
Mass (approx.)
1.45 kg
Design and specifications are subject to change 
without notice.
2
TA-WR3
TABLE OF CONTENTS
1.
GENERAL
...................................................................
3
2.
DIAGRAMS
2-1.
Block Diagram ................................................................
5
2-2.
Printed Wiring Board — DIAT POWER Section — ......
6
2-3.
Schematic Diagram — DIAT POWER Section — ........
7
2-4.
Printed Wiring Board — RX Board — ..........................
8
2-5.
Schematic Diagram — RX Board (1/2) — ....................
9
2-6.
Schematic Diagram — RX Board (2/2) — .................... 10
3.
EXPLODED VIEWS
3-1.
Overall Section ................................................................ 17
3-2.
RX Board, DIAT POWER Board Section ....................... 18
4.
ELECTRICAL PARTS LIST
.................................. 19
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
damaged by heat.
Flexible Circuit Board Repairing
• Keep the temperature of the 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.
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)
: LEAD FREE MARK
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 viscou-s (sticky, less prone to flow)
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.
SAFETY-RELATED  COMPONENT  WARNING!!
COMPONENTS  IDENTIFIED  BY  MARK  
0
  OR  DOTTED  LINE
WITH  MARK  
0
  ON  THE  SCHEMATIC  DIAGRAMS  AND  IN
THE  PARTS  LIST  ARE  CRITICAL  TO  SAFE  OPERATION.
REPLACE  THESE  COMPONENTS  WITH  SONY  PARTS  WHOSE
PART  NUMBERS  APPEAR  AS  SHOWN  IN  THIS  MANUAL  OR
IN  SUPPLEMENTS  PUBLISHED  BY  SONY.
3
TA-WR3
SECTION 1
GENERAL
This section is extracted
from instruction manual.
Surround amplifier
A
POWER/ON LINE indicator
B
POWER
C
DIR-R2 jack 
D
SPEAKER jacks 
POWER/ON LINE
POWER
SURROUND L
SURROUND R
SPEAKER
DIR-R2
Front panel
Rear panel
4
TA-WR3
SECTION 2
DIAGRAMS
• Waveforms
– RX Board –
Note on Schematic Diagrams:
• All capacitors are in 
µ
F unless otherwise noted.  (p: pF)
50 WV or less are not indicated except for electrolytics and
tantalums.
• All resistors are in 
  and 
1
/
4
 
W or less unless otherwise
specified.
•         
f
: internal component.
2
: nonflammable resistor.
C
: panel designation.
A
: B+ Line.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark: Power on
• Voltages are taken with a VOM (Input impedance 10 M
).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: AUDIO
• Abbreviation
TW
: Taiwan model
Note on Printed Wiring Boards:
X
: parts extracted from the component side.
Y
: parts extracted from the conductor side.
•        
f
: internal component.
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• Indication of transistor.
• Note for Printed Wiring Boards and Schematic Diagrams
C
B
These are omitted.
E
Q
Caution:
Pattern face side:  Parts on the pattern face side seen from
(SIDE A)               the pattern face are indicated.
Parts face side:     Parts on the parts face side seen from
(SIDE B)               the parts face are indicated.
3
 
IC111 
rk
 (XFSOIN) 
1 V/DIV, 10 ns/DIV
2
 
IC102 
r;
 (OSCI)
1
 
IC107 
wd
 (X1)
1 V/DIV, 100 ns/DIV
1 V/DIV, 40 ns/DIV
125 ns
20.3 ns
81.3 ns
3.7 Vp-p
4.8 Vp-p
3.4 Vp-p
B
These are omitted.
C
E
Q
Note: The components identified by mark 
0
 or dotted
line with mark 
0
 are critical for safety.
Replace only with part number specified.
Ver. 1.1
Page of 23

Download Sony DAV-DZ770W / DAV-FX999W / TA-WR3 Service Manual (Repair Manual)

Here you can read online and download Sony DAV-DZ770W / DAV-FX999W / TA-WR3 Service Manual in PDF. DAV-DZ770W / DAV-FX999W / TA-WR3 service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sony DAV-DZ770W / DAV-FX999W / TA-WR3 Audio. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.