AIR-SA15R, AIR-SA20PK - Sony Audio Service Manual (repair manual)

Model
AIR-SA15R AIR-SA20PK
Pages
34
Size
2.88 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
air-sa15r-air-sa20pk.pdf
Date

View Sony AIR-SA15R / AIR-SA20PK Service Manual online

SERVICE MANUAL
Sony Corporation
Audio&Video Business Group
Published by Sony Techno Create Corporation
AIR-SA15R
SPECIFICATIONS
WIRELESS SPEAKER SYSTEM
9-889-250-04
2009D05-1
© 
2009.04
US Model
Canadian Model
AEP Model
UK Model
Ver. 1.3  2009.04
•  US, Canadian and UK models have AIR-SA15R of the optional accessories and AIR-SA15R of supplied accessories for AIR-SA20PK.
•  AEP model have AIR-SA15R of supplied accessories for AIR-SA20PK.
•  “S-AIR” and its logo are trademarks of Sony Corporation.
•  The Bluetooth word mark and logos are owned by the Bluetooth SIG, Inc. and any use of such marks by Sony Corporation is under license. 
Other trademarks and trade names are those of their respective owners.
U.S.A. model:
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC 
DISTORTION:
With 3 ohms loads, both channels driven, from 
300 — 20,000Hz; rated 4 watts per channel minimum
RMS power, with no more than 10% total harmonic 
distortion from 250 milliwatts to rated output.
Canadian model:
Continuous RMS power output (reference): 
4 + 4 watts (3 ohms at 1 kHz, 10% THD)
Output
¦ (stereo mini jack): Accepts headphones with an 
impedance of 8 ohms or more
Speaker section
Speaker units: 65 mm, cone type (2)
Nominal impedance: 3 ohms
AEP, UK models:
DIN power output (rated):
3 + 3 watts (3 ohms at 1 kHz, DIN)
Continuous RMS power output (reference):
4 + 4 watts (3 ohms at 1 kHz, 10% THD)
Wireless transceiver (EZW-RT10) 
(US, Canadian and UK models of optional 
accessories model only)
Output: 12.0 milliwatts
Frequency band: 2.4000 GHz — 2.4835 GHz
Modulation method: DSSS
Power requirements: DC 3.3 V, 350 mA
Dimensions (w/h/d): 50 × 13 × 60 mm (2 ×
17
/
32
 × 
2
3
/
8
in)
Mass: 24 g (1 oz)
General
Power requirements: 120 V AC, 60 Hz (US, Canadian)
Power consumption: 15 watts
230 V AC, 50/60 Hz (AEP, UK)
Dimensions (w/h/d): Approx. 300 × 136 × 115 mm 
(11
7
/
8
 × 5 
3
/
8
 × 4 
5
/
8
 in)
Mass: Approx. 2.2 kg (4 lb 14 oz)
Supplied accessories (US, Canadian and UK models of 
optional accessories model only): 
Wireless transceiver EZW-RT10 (1)/Remote commander
 (RM-ANU046) (1)/R03 (size AAA) batteries (2)
notice.
Standby power consumption (AEP, UK): Max. 1 watt
AIR-SA15R
2
1. 
SERVICING  NOTES
  .............................................   3
2. GENERAL
  ..................................................................   4
3. DISASSEMBLY
3-1.   Disassembly ....................................................................   5
3-2.   Top Panel Block ..............................................................   6
3-3.   HP Board, R_CON Board, Front Panel Block ................   7
3-4.   Speaker (6.5 cm) (SP101: L-CH/SP201: R-CH) ............   7
3-5.   S-AIR RX-IF Board, KEY Board, MAIN Board............   8
3-6.   REG Board Power Transformer (PT901), 
 Power 
Cord 
.....................................................................  
9
3-7.   AMP Board, LCD Board ................................................   9
4. 
TEST  MODE 
 ............................................................   10
5. 
ELECTRICAL  CHECKS 
 ......................................   11
6. DIAGRAMS
6-1. Printed 
Wiring 
Board 
 
- S-AIR RX-IF Board (Suffi x-12) - ................................   14
6-2. Printed 
Wiring 
Board 
 
- S-AIR RX-IF Board (Suffi x-13) - ................................   14
6-3.  Schematic Diagram - S-AIR RX-IF Board - ..................   15
6-4.  Printed Wiring Boards - AMP Section -..........................   16
6-5.  Schematic Diagram - AMP Section - ..............................   17
6-6.  Printed Wiring Boards - PANEL Section - .....................   18
6-7.  Schematic Diagram - PANEL Section - ..........................   19
6-8.  Printed Wiring Boards - MAIN Section - .......................   20
6-9.  Printed Wiring Boards - POWER SUPPLY Section - ....   21
6-10.  Schematic Diagram - MAIN Section - ...........................   22
7. 
EXPLODED  VIEWS
7-1. Overall 
Section 
...............................................................  24
7-2.  Top Panel Section ...........................................................   25
7-3.  Front Panel Section .........................................................   26
7-4.  Rear Panel Section ..........................................................   27
8. 
ELECTRICAL  PARTS  LIST
  ..............................   28
Accessories are given in the last of the electrical parts list.
TABLE  OF  CONTENTS
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)
1.5 k
Ω
0.15 
μF
AC
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Earth Ground
Fig. A.  Using an AC voltmeter to check AC leakage.
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.
ATTENTION  AU  COMPOSANT  AYANT  RAPPORT  
À  LA  SÉCURITÉ!
LES  COMPOSANTS  IDENTIFIÉS  PAR  UNE  MARQUE  0  SUR  
LES  DIAGRAMMES  SCHÉMATIQUES  ET  LA  LISTE  DES  
PIÈCES  SONT  CRITIQUES  POUR  LA  SÉCURITÉ  DE  FONC-
TIONNEMENT.  NE  REMPLACER  CES  COMPOSANTS  QUE  
PAR  DES  PIÈCES  SONY  DONT  LES  NUMÉROS  SONT  DON-
NÉS  DANS  CE  MANUEL  OU  DANS  LES  SUPPLÉMENTS  
PUBLIÉS  PAR  SONY.
Ver. 1.2
AIR-SA15R
3
SECTION  1
SERVICING  NOTES
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 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.
NOTE  THE  S-AIR  COMMUNICATION  CONFIRMING
EZW-RT10 of the attachment is necessary for the confi rmation of 
S-AIR communication.
Confi rm S-AIR after inserting EZW-RT10 in the set (AIR-SA15R).
DIRECTION  OF  EZW-RT10  INSTALLATION
When EZW-RT10 is install with the S-AIR RX-IF board detached 
of the set, the label of EZW-RT10 is the under and install.
S-AIR RX-IF board
EZW-RT10
label
Power voltage indication
–Bottom View –
Model
Power voltage indication
US and Canadian models
AC: 120V - 60Hz 15W
AEP and UK models
AC: 230V - 50/60Hz 15W
MODEL  IDENTIFICATION
Ver. 1.2
– S-AIR RX-IF Board (Component Side) –
Suffix-12: 1-875-850-12
Suffix-13: 1-875-850-13
S-AIR  RX-IF  BOARD  DISCRIMINATION
In this set, the S-AIR RX-IF board has been changed in the mid-
way of production. Repair after distinguishing each type set to do-
ing the repair referring to the following.
AIR-SA15R
4
SECTION  2
GENERAL
This section is extracted 
from instruction manual.
Operations
6
Press 
/  repeatedly to select the desired 
option.
The default setting is underlined.
ALARM:
An alarm is output.
AUTO:
Sound from the connected S-AIR main unit is 
output. However, an alarm sounds in the following 
cases.
 When communication with the S-AIR main unit 
is cut off.
 When no sound is output from the S-AIR main 
unit or the audio signal level is too low.
 When the S-AIR main unit is not ready for 
playback at the set start time. Note that the alarm 
continues to sound even if the S-AIR main unit 
becomes ready after the start time has passed.
7
Press CLOCK/TIMER ENTER 
.
The display shows the timer settings.
8
If you selected “ALARM” in step 6, go to step 9. 
If you selected “AUTO” in step 6, prepare the sound 
source on the S-AIR main unit.
For details on preparing the sound source, refer to 
the Operating Instructions supplied with the S-AIR 
main unit.
9
Press 
  to turn off the unit.
The unit turns on about 45 seconds before the preset 
time.
If the unit is on at the preset time, the Daily Timer 
will not play.
To stop the alarm
Press any button.
To activate or check the timer again
1
Press CLOCK/TIMER MENU 
.
“SELECT” flashes in the display.
2
Press CLOCK/TIMER ENTER 
.
3
Press 
/  repeatedly to select “TIMER.”
4
Press CLOCK/TIMER ENTER 
.
To cancel the timer
1
Press CLOCK/TIMER MENU 
.
“SELECT” flashes in the display.
2
Press CLOCK/TIMER ENTER 
.
3
Press 
/  repeatedly to select “OFF.”
4
Press CLOCK/TIMER ENTER 
.
To change the setting
Start over from step 1.
Tip
The Daily Timer setting remains as long as the setting is not canceled 
manually.
Setting the clock
Use buttons on the unit to set the clock.
1
Turn on the unit.
Press 
 .
2
Select the clock set mode.
Press CLOCK/TIMER MENU . If the current 
mode appears on the display, press 
/
 repeatedly to select “CLOCK,” and then press 
CLOCK/TIMER ENTER .
3
Set the time.
Press 
/  repeatedly to set the hour, and 
then press CLOCK/TIMER ENTER . Use the 
same procedure to set the minute.
The clock settings are lost when you disconnect the 
power cord or if a power failure occurs.
Listening to the sound of the 
connected S-AIR main unit
You can use the S-AIR function to listen to the sound of 
an S-AIR main unit in a remote location.
1
Perform the procedure described in “Establishing 
the connection with an S-AIR main unit” and check 
that the S-AIR indicator 
 is lit.
2
Press S-AIR CH 
 repeatedly to select the desired 
S-AIR channel of the S-AIR main unit.
Wireless strength
The S-AIR channels that can be selected depend 
on the S-AIR main unit. For details, refer to the 
Operating Instructions supplied with the S-AIR main 
unit.
3
Press VOLUME +/
  to adjust the volume.
To operate the S-AIR main unit from the unit
You can perform the following operations using the 
buttons on the remote or unit.
To
Press
Start playback of a CD/DVD, 
etc.
 .
Stop playback of a CD/DVD, 
etc.
/CANCEL .
Pause playback of a CD/DVD, 
etc.
 .
Select a track, file or chapter 
of a CD/DVD, etc.
/ .
Select a preset station when 
listening to the radio
PRESET +/ 
 .
Change the FM/AM band 
when listening to the radio.
Hold down S-AIR 
CH  until the band 
changes.
Depending on the connected S-AIR main unit, 
the operation may differ. Refer to the Operating 
Instructions of the S-AIR main unit.
To listen with headphones
Connect headphones (not supplied) to the 
(headphones) jack located on the rear panel of the unit.
Note
The elapsed playing time or remaining playing time of the 
CD/DVD, etc. being played on the S-AIR main unit may not 
be displayed on this unit. In this case, “
.” appears.
Changing the display
To change the information on the display 
while the unit is on
Press DISPLAY  on the unit. Each time you press the 
button, the display changes as follows:
When the unit is connected to an S-AIR main unit:
Information of the connected S-AIR main unit
1)
Model name of the connected S-AIR main unit
2)
Clock
2)
 ...
When the unit is not connected to an S-AIR main unit:
“S-AIR” 
 “UNLINKED”
2)
 Clock
2)
 ...
1)
The displayed information depends on the connected S-AIR main 
unit. Up to 16 characters can be displayed.
2)
Displayed for about 8 seconds.
To turn off the display
When the unit is turned off, the clock is displayed. You 
can turn off the clock display to minimize the amount of 
power consumed (Power Saving Mode).
Press DISPLAY  on the unit when the clock is 
displayed. 
Press the button again to display the clock.
Note
The STANDBY indicator 
 on the unit lights up when the unit is 
off.
Using the Timers
The unit offers two timer functions. If you use the 
Daily Timer with the Sleep Timer, the Sleep Timer has 
priority.
Use buttons on the unit to set the timers.
Sleep Timer:
You can fall asleep to music. This function works even if 
the clock is not set.
Press SLEEP  repeatedly.
Note
Even if you set the timer, no sound is output from the unit if 
playback on the connected S-AIR main unit ends within the set time 
period or if communication with the S-AIR main unit is cut off.
Daily Timer:
You can wake up to the sound of the connected S-AIR 
main unit at a preset time.
Make sure you have set the clock.
1
Press VOLUME +/
  repeatedly to adjust the 
volume level while viewing the volume level 
indication on the display.
2
Press CLOCK/TIMER MENU 
.
3
Press 
/  repeatedly to select “TIMER,” 
then press CLOCK/TIMER ENTER 
.
“ON TIME” appears, and the hour indication flashes.
4
Set the time to start playing.
Press 
/  repeatedly to set the hour, and 
then press CLOCK/TIMER ENTER .
The minute indication flashes. Use the procedure 
above to set the minute.
5
Use the same procedure as in step 4 to set the time 
to stop playing.
Turning off the remote control 
function
In addition to the unit you already have, you can 
connect other S-AIR sub units to a single S-AIR main 
unit and use them together.
However, when using multiple S-AIR sub units near 
each other, all the S-AIR sub units may receive the same 
signal from the remote and the connected S-AIR main 
unit may not function properly. To prevent this, you can 
turn off the remote control function of the S-AIR sub 
units.
Use buttons on the S-AIR sub unit whose remote 
control function you want to turn off.
1
Press 
  to turn off the unit.
2
Press DISPLAY 
 repeatedly until the clock is 
displayed.
3
Press 
  while holding down CLOCK TIMER/
ENTER
.
“RMT OFF” appears in the display and the unit is 
turned on. If you try controlling the unit using the 
remote, “RMT OFF” appears in the display and the 
unit will not accept the signal from the remote.
To turn on the remote control function
Perform steps 1 and 3 above and check that “RMT ON” 
appears in the display.
Note
Even when the remote control function is turned off, 

and VOLUME +/
 on the remote will continue to 
function.
Unit (AIR-SA15R/Wireless Speaker System)
Remote (RM-ANU046)

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