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US Model

Canadian Model

AEP Model

UK Model

E Model

Australian Model

2006I16-1
© 2006.09

TA-WR4 is the surround amplifier section
in DAV-DZ810W/DZ820KW/FX900W/
FX900KW.

POWER OUTPUT AND 
TOTAL HARMONIC 
D

US and Canadian models

US and Canadian models

ISTORTION

(FTC Output Power)

:

:

SL/SR: 84 W/ch 3 ohms at 
160 - 20,000 Hz,
0.7 % THD

Surround mode (reference)  RMS output power, 10 % 

THD

Latin American models:

130 W + 130 W
(with SS-TS55,
SS-TS56W)

 Argentine and other models:

140 W + 140 W
(with SS-TS55,
SS-TS56W)

Power requirements 
Latin American models: 

110 - 240 V AC, 50/60 Hz
120 V AC, 60 Hz

120 V AC, 50/60 Hz

Other models: 

220 - 240 V AC, 50/60 Hz

Taiwan model :
Power consumption

50 W

Dimensions (approx.)

280   60   280 mm (w/h/d)

Mass (approx.)

1.6 kg

Design and specifications are subject to change 
without notice.

2

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

3

2-1.

Block Diagram ................................................................

5

2-2.

Printed Wiring Board — RX AMP Board — .................

6

2-3.

Schematic Diagram — RX AMP Board (1/4) — ...........

7

2-4.

Schematic Diagram — RX AMP Board (2/4) — ...........

8

2-5.

Schematic Diagram — RX AMP Board (3/4) — ...........

9

2-6.

Schematic Diagram — RX AMP Board (4/4) — ........... 10

2-7.

Printed Wiring Boards — Power Section — .................. 11

2-8.

Schematic Diagram — Power Section — ...................... 12

3-1.

Overall Section ................................................................ 20

3-2.

AMP Section ................................................................... 21

.................................. 22

• Never reuse a disconnected chip component.

• Notice that the minus side of a tantalum capacitor may be

damaged by heat.

• 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.

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 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.

0

0

0

After correcting the original service problem, perform the following
safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs, screws,
and all other exposed metal parts for AC leakage.
Check leakage as described below.

The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microamperes.).
Leakage current can be measured by any one of three methods.

1. A commercial leakage tester, such as the Simpson 229 or RCA

WT-540A. Follow the manufacturers’ instructions to use these
instruments.

2. A battery-operated AC milliammeter. The Data Precision 245

digital multimeter is suitable for this job.

3. Measuring the voltage drop across a resistor by means of a

VOM or battery-operated AC voltmeter. The “limit” indication
is 0.75 V, so analog meters must have an accurate low-voltage
scale. The Simpson 250 and Sanwa SH-63Trd are examples
of a passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2 V AC range are suitable.  (See
Fig. A)

1.5 k

Ω

0.15 

µ

F

AC
voltmeter
(0.75 V)

To Exposed Metal
Parts on Set

Earth Ground

3

This section is extracted
from instruction manual.

A

B

C

D

SUR L

SUR R

SPEAKER

SS-TS56W

POWER

POWER / ON LINE

4

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 

Ω

  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

Ω

).

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

AR

: Argentina model

AUS : Australian model
CND : Canadian model
E3

: 240V AC area in E model

E32 : 110-240V AC area in E model
KR

: Korean model

RU

: Russian model

SP

: Singapore model

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.

C

B

These are omitted.

E

Q

Caution:
Parts face side:     Parts on the parts face side seen from
(SIDE A)               the parts face are indicated.
Pattern face side:  Parts on the pattern face side seen from
(SIDE B)               the pattern face are indicated.

B

C

E

Q

The components identi-
fied by mark 

0

  or dot-

ted line with mark 

0

 are

critical for safety.
Replace only with part
number specified.

Les composants identifiés
par une marque 

0

 sont cri-

tiques pour la sécurité.
Ne les remplacer que par une
piéce por tant le numéro
spécifié.