TA-SA100WR - Sony Audio Service Manual (repair manual)

2009G05-1

© 

2009.07

•  TA-SA100WR is the surround amplifi er section 

in WAHT-SA1 etc.

•  EZW-RT10 or EZW-T100 is necessary to check 

S-AIR communication.

POWER OUTPUT AND TOTAL 
HARMONIC DISTORTION:

With 3 ohm loads, 
both channels 
driven, from 120 - 
20,000 Hz; rated 50 
watts per channel 
minimum RMS 
power, with no 
more than 0.7 % 
total harmonic 
distortion from 250 
milliwatts to rated 
output.

US model: 
Surround mode (reference) RMS output power

: 143W (per 
channel at 3 ohms, 
1 kHz, 10 % THD)

Other models: 
Stereo mode (rated) 

80 W + 80 W (at 
3 ohms, 1 kHz, 1 % 
THD)

Surround mode (reference) RMS output power

: 143 W (per 
channel at 3 ohms, 
1 kHz, 10 % THD)

Rated impedance: 

3 - 16 

:

Power requirements: 
North American and
Mexican models: 

120 V AC, 60 Hz

Taiwan model: 

120 V AC, 50/60 Hz

Latin American and 
PX models: 

110 V – 240 V AC, 

 50/60 

Hz

Other models: 

220 V – 240 V AC, 

 50/60 

Hz

Korean model: 

220 V AC, 60 Hz

Thai model: 

220 V AC, 50/60 Hz

Power consumption

On: 50 W

Dimensions (approx.)

85 mm × 100 mm × 
330 mm
(3 

3

/

8

 in × 4 in × 

13 in) (w/h/d) (incl. 
EZW-RT10)
85 mm × 100 mm × 
345 mm
(3 

3

/

8

 in × 4 in × 

13 

5

/

8

 in) (w/h/d) 

incl. speaker cord 
cover and speaker 
cord holder

Mass (approx.)

1.7 kg (3 lb 12 oz) 
incl. speaker cord 
cover and speaker 
cord holder

Design and specifications are subject to change 
without notice.

“S-AIR” and its logo are trademarks of Sony 
Corporation.

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

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

3-1. Disassembly 

Flow 

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

3-2. Cover 

(Cord) 

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

3-3. Case 

.................................................................................   8

3-4.  Shield (Top), Power Cord ...............................................   8
3-5.  POWER SW Board, PANEL Board, 
 

Front Panel Block ...........................................................   9

3-6.  Back Panel, JOINT Board ...............................................   9
3-7. Power 

Block 

....................................................................   9

3-8.  POWER Board, AMP Board ...........................................   9

4-1. Block 

Diagram 

................................................................  10 

 

4-2. Printed 

Wiring 

Board 

 

- AMP Board (Component Side) (Suffi x-11) - ................   12

4-3. Printed 

Wiring 

Board 

 

- AMP Board (Conductor Side) (Suffi x-11) - .................   13

4-4. Printed 

Wiring 

Board 

 

- AMP Board (Component Side) (Suffi x-12) -................   14

4-5. Printed 

Wiring 

Board 

 

- AMP Board (Conductor Side) (Suffi x-12) - .................   15

4-6.  Schematic Diagram - AMP Board (1/2) - .......................   16
4-7.  Schematic Diagram - AMP Board (2/2) - .......................   17
4-8.  Printed Wiring Boards - PANEL Section - .....................   18
4-9.  Schematic Diagram - PANEL Section - ..........................   19
4-10.  Printed Wiring Boards - POWER Section - ....................   20
4-11.  Schematic Diagram - POWER Section - ........................   21

5-1. Cover 

Section 

..................................................................  26

5-2.  Top Shield Section ..........................................................   27
5-3.  Front Panel Section .........................................................   28
5-4. Chassis 

Section 

...............................................................  29

5-5. Power 

Section 

.................................................................  30

  ..............................   31

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.

SAFETY  CHECK-OUT
After correcting the original service problem, perform the follow-
ing 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.

LEAKAGE  TEST
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)

0  OR  DOTTED  LINE  

0  ON  THE  SCHEMATIC  DIAGRAMS  AND  IN  

0  SUR  

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.

Checking the transmission status

You can check the status of sound transmission between the S-AIR main
unit and surround amplifier by checking the POWER/ON LINE indicator
on the surround amplifier.

Turns green

Sound transmission is established.

Flashes green

Sound transmission is not established. For details, see
“Troubleshooting”.

Turns red

The surround amplifier does not output sound. For details,
see “Troubleshooting”.

Turns off

The surround amplifier turns off or its protection is active.
For details, see “Troubleshooting”.

Sound

There is no sound.
Check the status of the POWER/ON LINE indicator on the surround
amplifier.
– turns green

• The speaker cord is not connected securely.
• Check the speaker connections and settings.
• The volume of the S-AIR main unit is set to minimum.
• The S-AIR main unit is in mute status.
• Depending on the source or the settings of the S-AIR main unit, the effect of the

speakers may be less noticeable.

• Headphones are connected.

– flashes green

• The S-AIR main unit is not turned on.
• The S-AIR main unit is paired to another S-AIR product.
• The surround amplifier is paired to another S-AIR main unit.
• Confirm the IDs of the S-AIR main unit and surround amplifier.
• Pairing operation is not completed.
• Sound transmission is poor. Move the

surround amplifier so that the POWER/ON LINE indicator turns green.

• Move the system away from any other wireless products.

• Stop using another wireless product.
• The wireless transceiver and/or the wireless transmitter are/is not inserted

correctly.

– turns red

• Change the SURROUND SELECTOR switch (SURROUND or SURROUND

BACK) of the surround amplifier to match the S-AIR main unit.

:/2 W

• Abbreviation
 AUS : 

Australian 

model

  CH 

: Chinese model

  CND  : Canadian model
  E3 

: 240V AC area in E model

  E15 

: Iranian model

  E32 

: 110V – 240V AC area in E model

  EA 

: Saudi Arabia model

  KR 

: Korean model

  MX 

: Mexican model

  RU 

: Russian model

  SP 

: Singapore model

 TH  : 

Thai 

model

 TW  : 

Taiwan 

model