DOWNLOAD Sony SRS-A27 (serv.man2) Service Manual ↓ Size: 359.99 KB | Pages: 8 in PDF or view online for FREE

Model
SRS-A27 (serv.man2)
Pages
8
Size
359.99 KB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
srs-a27-sm2.pdf
Date

Sony SRS-A27 (serv.man2) Service Manual ▷ View online

SERVICE MANUAL
ACTIVE SPEAKER SYSTEM
E Model
SRS-A27
Ver. 1.1  2005.02
9-879-377-02
2005B05-1
© 2005.02
Sony Corporation
Personel Audio Company
Published by Sony Engineering Corporation
SPECIFICATIONS
2
SRS-A27
SECTION  1
GENERAL
A
Left speaker (rear)
to DC IN 9 V jack
AC power adaptor (not supplied)
to a wall outlet
D
1
2
POWER indicator
Left speaker (front)
Right speaker (rear)
B
Left speaker (rear)
Four R6 (size AA)
batteries
(left speaker only)
Remove the batteries as
illustrated.
– side
1
2
C
Right speaker (rear)
Left speaker (front)
to R OUT jack of the left speaker
to a headphones jack (stereo mini jack)
CD/MD Walkman*, etc
* “WALKMAN” is a registered trademark of Sony Corporation to represent Headphone Stereo
products.
This section is extracted from
instruction manual.
Polarity of the plug
Power Sources 
(see fig. A
 
 
Using on house current
When the AC power adaptor is connected to the system,
internal batteries are automatically disconnected.
Note on the AC power adaptor
Use only the AC-E90HG AC
power adaptor (not supplied).
Do not use any other AC power
adaptor.
Battery installation 
(see fig. B
Battery Replacement
When the batteries are weak, the POWER indicator will
start flickering and become faint, or the playback sound
will be distorted or unstable. In such a case, replace all
the batteries with new ones. For battery life, see
“Specifications.”
Connections 
(see fig. C
Connect the left speaker to the source equipment.
When the system is connected to a monaural jack of a
radio, etc., the sound may only come through the left
speaker. In such a case, use the optional Sony plug
adaptor PC-236MS. The sound will come through both
speakers.
To connect to a stereo phone-type
headphones jack
Use the optional PC-234S plug adaptor or RK-G138
connecting cord.
How to Use 
(see fig. D
Listening to the sound through the built-in
amplifier
1
Press the POWER switch ($ ON).
The POWER indicator lights up.
2
Adjust the VOLUME control.
Turn off the MEGA BASS or BASS BOOST (Walkman,
etc.) function as it may cause sound distortion.
After listening, press the POWER switch (4 OFF/
DIRECT).
The POWER indicator goes off.
Listening to the sound without the built-in
amplifier
Set the POWER switch (4 OFF/DIRECT). In this case,
the VOLUME control does not operate. Adjust the
volume with the connected equipment.
3
SRS-A27
SECTION  2
DIAGRAM
Note for Printed Wiring Boards and Schematic Diagrams
Note on Schematic Diagram:
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.
C
: panel designation.
A
: B+ Line.
Power voltage is dc 6V and fed with regulated dc power
supply from battery terminal.
Voltages and waveforms are dc with respect to ground
under no-signal conditions.
Voltages are taken with a VOM (Input impedance 10 M
).
Voltage variations may be noted due to normal produc-
tion tolerances.
Signal path.
F
: INPUT SIGNAL
Note on Printed Wiring Board:
X
: parts extracted from the component side.
Y
: parts extracted from the conductor side.
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Ver. 1.1
4
SRS-A27
SP2
(R-CH)
r
RED
WHT
R2
R1
IC2
IC1
J1
J2
D1
R9
R8
R7
R6
R5
R4
R3
C19
C18
C16
C15
C14
C13
C12
C11
C10
C9
C8
C7
C6
C5
C4
C3
C2
C1
C17
CL4
CL5
CL7
CL6
CL3
CL2
CL1
1
4
8
5
1
4
8
5
AMPLIFIER BOARD
1-680-764-
22
(22)
JK1
R OUT
RV1
VOLUME
DRY BATTERY
SIZE "AA"
(IEC DESIGNATION R6)
4PCS. 6V
DC  IN  9V
+
JK2
S1
S1
-2
-4
-1
-3
-2
-4
-1
-3
RED
WHT
BLK
RED
WHT
SP1
(L-CH)
P1
(INPUT)
-1
-2
D1, S1
POWER
$
ON
4
OFF/DIRECT
A
B
C
D
1
2
3
4
2-1. PRINTED  WIRING  BOARD
Page of 8
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Sony SRS-A27 (serv.man2) Service Manual ▷ Download

  • DOWNLOAD Sony SRS-A27 (serv.man2) Service Manual ↓ Size: 359.99 KB | Pages: 8 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sony SRS-A27 (serv.man2) in PDF for free, which will help you to disassemble, recover, fix and repair Sony SRS-A27 (serv.man2) Audio. Information contained in Sony SRS-A27 (serv.man2) Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.