Read Sony STR-DG300 Service Manual online
1
SERVICE MANUAL
AEP Model
STR-DG300
FM STEREO/FM-AM RECEIVER
Amplifier section
Stereo Power Output
1)
, Reference Power Output
1) 2)
8 ohms 20 Hz – 20 kHz, THD 0.09 %
90 W + 90 W, 110 W/ch
8 ohms 1 kHz, THD 0.7 %
105 W + 105 W, 120 W/ch
8 ohms 1 kHz, THD 10 %
130 W + 130 W, 160 W/ch
1) Measured under the following conditions:
230 V AC, 50 Hz
2) Reference power output for front speakers.
Depending on the sound field settings and
the source, there may be no sound output.
the source, there may be no sound output.
Frequency response
Analog
10 Hz – 70 kHz
+0.5/–2 dB (with sound
field and tone bypassed)
+0.5/–2 dB (with sound
field and tone bypassed)
SPECIFICATIONS
Inputs
Analog
Sensitivity: 500 mV/
50 kohms
S/N
50 kohms
S/N
3)
: 96 dB
(A, 500 mV
4)
)
Digital (Coaxial)
Impedance: 75 ohms
S/N: 100 dB
(A, 20 kHz LPF)
S/N: 100 dB
(A, 20 kHz LPF)
Digital (Optical)
S/N: 100 dB
(A, 20 kHz LPF)
(A, 20 kHz LPF)
Output (Analog)
AUDIO OUT
Voltage: 500 mV/10 kohms
SUB WOOFER
Voltage: 2 V/1 kohm
Tone
Gain levels
±6 dB, 1 dB step
3) INPUT SHORT (with sound field and tone bypassed).
4) Weighted network, input level.
Ver. 1.0 2006. 06
9-887-325-01
2006F04-1
© 2006. 06
Sony Corporation
Home Audio Division
Published by Sony Techno Create Corporation
Manufactured under license from Dolby Laboratories.
“Dolby” and the double-D symbol are trademarks of
Dolby Laboratories.
“DTS” and “DTS 2.0” are trademarks of Digital
Theater Systems, Inc.
“Dolby” and the double-D symbol are trademarks of
Dolby Laboratories.
“DTS” and “DTS 2.0” are trademarks of Digital
Theater Systems, Inc.
– Continued on next page –
Photo: Black type
2
STR-DG300
FM tuner section
Tuning range
87.5 – 108.0 MHz
Intermediate frequency
10.7 MHz
Useable sensitivity
11.2 dBf, 1 µV/75 ohms
S/N
Mono/Stereo
76 dB/70 dB
Harmonic distortion at 1 kHz
Mono/Stereo
0.3%/0.5%
Separation
45 dB at 1 kHz
Frequency response
30 Hz – 15 kHz,
+0.5/–2 dB
+0.5/–2 dB
AM tuner section
Tuning range
With 9-kHz tuning scale: 531 – 1,602 kHz
Intermediate frequency
450 kHz
Usable sensitivity
50 dBµ/m (at 1,000 kHz or
999 kHz)
999 kHz)
General
Power requirements
230 V AC, 50/60 Hz
Power consumption
220 W
Power consumption (during standby mode)
0.2 W
AC outlets
1 switched, 100 W/0.4A
MAX
MAX
Dimensions (w/h/d) (Approx.)
430
×
157.5
×
316 mm
including projecting parts
and controls
and controls
Mass (Approx.)
7.5 kg
Supplied accessories
FM wire antenna (1)
AM loop antenna (1)
Remote commander RM-AAU007 (1)
R6 (size-AA) batteries (2)
AM loop antenna (1)
Remote commander RM-AAU007 (1)
R6 (size-AA) batteries (2)
Design and specifications are subject to change
without notice.
without notice.
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.
REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
MODEL IDENTIFICATION
— BACK PANEL —
Part No.
MODEL
PART No.
AEP
2-665-982-0s
3
STR-DG300
TABLE OF CONTENTS
1. GENERAL
Description and location of parts ............................................. 4
2. DISASSEMBLY
2-1. Case ..................................................................................... 6
2-2. Front Panel Section ............................................................. 7
2-3. Back Panel Section .............................................................. 7
2-4. DIGITAL Board .................................................................. 8
2-5. MAIN Board Section .......................................................... 8
2-6. STANDBY Board ............................................................... 9
2-2. Front Panel Section ............................................................. 7
2-3. Back Panel Section .............................................................. 7
2-4. DIGITAL Board .................................................................. 8
2-5. MAIN Board Section .......................................................... 8
2-6. STANDBY Board ............................................................... 9
3. TEST MODE
..................................................................... 10
4. DIAGRAMS
4-1. Block Diagram – Tuner/Audio Section – .......................... 11
4-2. Block Diagram – Digital Section – ................................... 12
4-3. Block Diagram – Key/Display Section – .......................... 13
4-4. Block Diagram – Power Section – .................................... 14
4-5. Circuit Boards Location .................................................... 15
4-6. Printed Wiring Boards – Main Section – .......................... 16
4-7. Schematic Diagram – Main Section (1/2) – ...................... 17
4-8. Schematic Diagram – Main Section (2/2) – ...................... 18
4-9. Printed Wiring Board – Digital Section (Side A) – ........... 19
4-10. Printed Wiring Board – Digital Section (Side B) – ........... 20
4-11. Schematic Diagram – Digital Section (1/5) – ................... 21
4-12. Schematic Diagram – Digital Section (2/5) – ................... 22
4-13. Schematic Diagram – Digital Section (3/5) – ................... 23
4-14. Schematic Diagram – Digital Section (4/5) – ................... 24
4-15. Schematic Diagram – Digital Section (5/5) – ................... 25
4-16. Printed Wiring Board – Front B Speaker Section – .......... 26
4-17. Schematic Diagram – Front B Speaker Section – ............. 26
4-18. Printed Wiring Boards – Display Section – ...................... 27
4-19. Schematic Diagram – Display Section – ........................... 28
4-20. Printed Wiring Board – Power Section – .......................... 29
4-21. Schematic Diagram – Power Section – ............................. 30
4-2. Block Diagram – Digital Section – ................................... 12
4-3. Block Diagram – Key/Display Section – .......................... 13
4-4. Block Diagram – Power Section – .................................... 14
4-5. Circuit Boards Location .................................................... 15
4-6. Printed Wiring Boards – Main Section – .......................... 16
4-7. Schematic Diagram – Main Section (1/2) – ...................... 17
4-8. Schematic Diagram – Main Section (2/2) – ...................... 18
4-9. Printed Wiring Board – Digital Section (Side A) – ........... 19
4-10. Printed Wiring Board – Digital Section (Side B) – ........... 20
4-11. Schematic Diagram – Digital Section (1/5) – ................... 21
4-12. Schematic Diagram – Digital Section (2/5) – ................... 22
4-13. Schematic Diagram – Digital Section (3/5) – ................... 23
4-14. Schematic Diagram – Digital Section (4/5) – ................... 24
4-15. Schematic Diagram – Digital Section (5/5) – ................... 25
4-16. Printed Wiring Board – Front B Speaker Section – .......... 26
4-17. Schematic Diagram – Front B Speaker Section – ............. 26
4-18. Printed Wiring Boards – Display Section – ...................... 27
4-19. Schematic Diagram – Display Section – ........................... 28
4-20. Printed Wiring Board – Power Section – .......................... 29
4-21. Schematic Diagram – Power Section – ............................. 30
5. EXPLODED VIEWS
5-1. Case Section ...................................................................... 38
5-2. Front Panel Section ........................................................... 39
5-3. Chassis Section ................................................................. 40
5-2. Front Panel Section ........................................................... 39
5-3. Chassis Section ................................................................. 40
6. ELECTRICAL PARTS LIST
........................................ 41
4
STR-DG300
SECTION 1
GENERAL
This section is extracted
from instruction manual.
from instruction manual.
4
GB
Description and location of parts
Getting Started
Front panel
?/1
VIDEO 3 IN/
PORTABLE AUDIO IN
SPEAKERS
(OFF/A/B/A+B)
PHONES
TREBLE
BASS
A.F.D.
MOVIE
MUSIC
DIRECT
TUNING MODE
DISPLAY
INPUT MODE
INPUT SELECTOR
TUNING
–
+
WOOFER
ON/OFF
MUTING
MASTER VOLUME
3
7
5
9
q;
ql
qa
qs
qj
qk
qd
qf
qg
qh
1
2
4
6
8
Name
Function
A ?
/
1
Press to turn the receiver
on or off (page 19, 23, 24,
32, 34).
on or off (page 19, 23, 24,
32, 34).
B
SPEAKERS
(OFF/A/B/A+B)
(OFF/A/B/A+B)
Press to select the speaker
system (page 20).
system (page 20).
C
TUNING MODE
Press to select the tuning
mode (page 33, 36).
mode (page 33, 36).
D
Display
The current status of the
selected component or a
list of selectable items
appears here (page 6).
selected component or a
list of selectable items
appears here (page 6).
E
Remote sensor
Receives signals from
remote commander.
remote commander.
F
DISPLAY
Press to select information
displayed on the display
(page 37, 38).
displayed on the display
(page 37, 38).
Name
Function
G
INPUT MODE
Press to select the input
mode when the same
components are connected
to both digital and analog
jacks (page 38).
mode when the same
components are connected
to both digital and analog
jacks (page 38).
H
MASTER
VOLUME
VOLUME
Turn to adjust the volume
level of all speakers at the
same time (page 21, 22,
23, 24).
level of all speakers at the
same time (page 21, 22,
23, 24).
I
MUTING
Press to mute the sound
(page 22).
(page 22).
J
WOOFER
ON/OFF
Press to turn the sub
woofer on or off.
woofer on or off.
K
INPUT
SELECTOR
SELECTOR
Turn to select the input
source to playback (page
22, 23, 24, 31, 33, 36, 38,
39).
source to playback (page
22, 23, 24, 31, 33, 36, 38,
39).
L
DIRECT
Press to listen to high
quality analog sound
(page 31).
quality analog sound
(page 31).
5
GB
Gettin
g
Sta
rted
Name
Function
M
MOVIE,
MUSIC
Press to select sound fields
for movie or music (page
29).
for movie or music (page
29).
N
A.F.D.
Press to select A.F.D.
mode (page 29).
mode (page 29).
O
TREBLE +/–
Press to adjust the treble
level of the front speakers
(page 28).
level of the front speakers
(page 28).
P
BASS +/–
Press to adjust the bass
level of the front speakers
(page 28).
level of the front speakers
(page 28).
Q
TUNING +/–
Turn to scan a station
(page 33, 35).
(page 33, 35).
R
VIDEO 3 IN/
PORTABLE
AUDIO IN jack
PORTABLE
AUDIO IN jack
To connect a portable
audio such as MP3 player,
etc. (page 15, 22).
audio such as MP3 player,
etc. (page 15, 22).
S
PHONES jack
Connects to a headphone
(page 43).
(page 43).
6
GB
About the indicators on the display
MEMORY
L
C
R
SL
SR
SW
LFE
SP A
SP B
SP B
RDS
STEREO MONO
A.DIRECT
D.RANGE
SLEEP OPT COAX
DIGITAL
;
DTS
q;
9
qd
qf
qa
qs
8
6
7
4
3
5
2
1
Name
Function
A
SW
Lights up when you press
WOOFER ON/OFF on the
receiver to turn on the sub
woofer and the audio signal is
output from the SUB WOOFER
jack.
WOOFER ON/OFF on the
receiver to turn on the sub
woofer and the audio signal is
output from the SUB WOOFER
jack.
B
LFE
Lights up when the disc being
played back contains an LFE
(Low Frequency Effect)
channel and the LFE channel
signal is actually being
reproduced.
played back contains an LFE
(Low Frequency Effect)
channel and the LFE channel
signal is actually being
reproduced.
C
SP A/SP B
Lights up according to the
speaker system used. However,
these indicators do not light up
if the speaker output is turned
off or if a headphone is
connected.
speaker system used. However,
these indicators do not light up
if the speaker output is turned
off or if a headphone is
connected.
D ;
DIGITAL
Lights up when Dolby Digital
signals are input.
Note
When playing a Dolby Digital
format disc, be sure that you
have made digital connections
and that INPUT MODE is not
set to “ANALOG” (page 38).
signals are input.
Note
When playing a Dolby Digital
format disc, be sure that you
have made digital connections
and that INPUT MODE is not
set to “ANALOG” (page 38).
E
DTS
Lights up when DTS signals are
input.
Note
When playing a DTS format
disc, be sure that you have made
digital connections and that
INPUT MODE is not set to
“ANALOG” (page 38).
input.
Note
When playing a DTS format
disc, be sure that you have made
digital connections and that
INPUT MODE is not set to
“ANALOG” (page 38).
F
MEMORY
Lights up when a memory
function, such as Preset
Memory (page 35), etc., is
activated.
function, such as Preset
Memory (page 35), etc., is
activated.
Name
Function
G
A.DIRECT
Lights up when ANALOG
DIRECT is selected (page 31).
DIRECT is selected (page 31).
H
Preset
station
indicators
station
indicators
Lights up when using the
receiver to tune in radio stations
you have preset. For details on
presetting radio stations, see
page 35.
receiver to tune in radio stations
you have preset. For details on
presetting radio stations, see
page 35.
I
Tuner
indicators
indicators
Lights up when using the
receiver to tune in radio stations
(page 32), etc.
receiver to tune in radio stations
(page 32), etc.
J
D.RANGE
Lights up when dynamic range
compression is activated (page
27).
compression is activated (page
27).
K
COAX
Lights up when INPUT MODE
is set to “AUTO IN” and the
source signal is a digital signal
being input through the
COAXIAL jack, or when
INPUT MODE is set to “COAX
IN” (page 38).
is set to “AUTO IN” and the
source signal is a digital signal
being input through the
COAXIAL jack, or when
INPUT MODE is set to “COAX
IN” (page 38).
L
OPT
Lights up when INPUT MODE
is set to “AUTO IN” and the
source signal is a digital signal
being input through the
OPTICAL jack, or when
INPUT MODE is set to “OPT
IN” (page 38).
is set to “AUTO IN” and the
source signal is a digital signal
being input through the
OPTICAL jack, or when
INPUT MODE is set to “OPT
IN” (page 38).
M
SLEEP
Lights up when the sleep timer
is activated (page 39).
is activated (page 39).
7
GB
Gettin
g
Sta
rt
ed
Name
Function
N
Playback
channel
indicators
channel
indicators
L
R
C
SL
SR
The letters (L, C, R, etc.)
indicate the channels being
played back. The boxes around
L and R show the receiver
downmixes the source sound to
2 channels.
Front Left
Front Right
Center (monaural)
Surround Left
Surround Right
Example:
Recording format (Front/
Surround): 3/2.1
Sound Field: A.F.D. AUTO
indicate the channels being
played back. The boxes around
L and R show the receiver
downmixes the source sound to
2 channels.
Front Left
Front Right
Center (monaural)
Surround Left
Surround Right
Example:
Recording format (Front/
Surround): 3/2.1
Sound Field: A.F.D. AUTO
L
C
R
SL
SR
SW