Sony STR-DE875 / STR-DE975 Service Manual ▷ View online
3
STR-DE875/DE975
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.
COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS
APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY.
After correcting the original service problem, perform the
following safety checks 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.
following safety checks 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
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.
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.
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.
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 2V AC range are suitable. (See
Fig. 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 2V AC range are suitable. (See
Fig. A)
SAFETY CHECK-OUT
To Exposed Metal
Parts on Set
0.15
µF
1.5 k
Ω
AC
Voltmeter
(0.75 V)
Voltmeter
(0.75 V)
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
Parts No.
MODEL IDENTIFICATION
— BACK PANEL —
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFÉS PAR UNE MARQUE
0
SUR LES
DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.
PARTS No.
4-232-578-0s
4-232-578-1s
4-233-045-0s
4-233-045-1s
4-233-045-2s
4-233-045-3s
4-233-045-4s
4-233-045-5s
4-233-045-6s
4-233-045-7s
MODEL
DE975:US model
DE975:Canadian model
DE875:US model
DE875:Canadian model
DE875:Australian model
DE875:Malaysia,Singapore model
DE875:Chinese model
DE875:E model
DE875:AEP model
DE875:UK model
4
STR-DE875/DE975
TABLE OF CONTENTS
1. GENERAL
··········································································· 5
2. TEST MODE
······································································ 7
3. DIAGRAMS
3-1.
Circuit Boards Location ..................................................... 8
3-2.
Block Diagrams ................................................................ 10
• Main Section .................................................................. 10
• Power Section ................................................................ 11
• Main Section .................................................................. 10
• Power Section ................................................................ 11
3-3.
Printed Wiring Board – Digital Section – ........................ 12
3-4.
Schematic Diagram – Digital Section (1/4) – .................. 13
3-5.
Schematic Diagram – Digital Section (2/4) – .................. 14
3-6.
Schematic Diagram – Digital Section (3/4) – .................. 15
3-7.
Schematic Diagram – Digital Section (4/4) – .................. 16
3-8.
Printed Wiring Board – Main Section – ........................... 17
3-9.
Schematic Diagram – Main Section (1/3) – ..................... 18
3-10. Schematic Diagram – Main Section (2/3) – ..................... 19
3-11. Schematic Diagram – Main Section (3/3) – ..................... 20
3-12. Printed Wiring Board – Display Section – ....................... 21
3-13. Schematic Diagram – Display Section – .......................... 22
3-14. Printed Wiring Board – Video Section – .......................... 23
3-15. Schematic Diagram – Video Section – ............................. 24
3-16. Printed Wiring Board – Speaker Section – ....................... 25
3-17. Schematic Diagram – Speaker Section – ......................... 26
3-18. Printed Wiring Board – Power Section – ......................... 27
3-19. Schematic Diagram – Power Section – ............................ 28
3-20. IC Block Diagrams ........................................................... 29
3-21. IC Pin Function Description ............................................. 33
3-11. Schematic Diagram – Main Section (3/3) – ..................... 20
3-12. Printed Wiring Board – Display Section – ....................... 21
3-13. Schematic Diagram – Display Section – .......................... 22
3-14. Printed Wiring Board – Video Section – .......................... 23
3-15. Schematic Diagram – Video Section – ............................. 24
3-16. Printed Wiring Board – Speaker Section – ....................... 25
3-17. Schematic Diagram – Speaker Section – ......................... 26
3-18. Printed Wiring Board – Power Section – ......................... 27
3-19. Schematic Diagram – Power Section – ............................ 28
3-20. IC Block Diagrams ........................................................... 29
3-21. IC Pin Function Description ............................................. 33
4. EXPLODED VIEWS
4-1.
Front Panel Section .......................................................... 36
4-2.
Chassis Section ................................................................. 37
5. ELECTRICAL PARTS LIST
······································· 39
5
STR-DE875/DE975
SECTION 1
GENERAL
This section is extracted
from instruction manual.
from instruction manual.
?
/
1
DISPLAY
DIMMER
ON SCREEN
MEMORY SHIFT
FM MODE
FM
AM
PRESET
TUNING
TUNING
TUNING
–
+
–
+
MULTI CHANNEL DECODING
A.F.D.
SOUND FIELD
MULTI /2CH A. DIRECT
DIGITAL CONCERT HALL
EQUALIZER
MUTING
INPUT MODE
MODE
2ND ROOM
FUNCTION
6.1 CH DECODING
CINEMA STUDIO EX
A
A
MODE
2CH
PHONES
VIDEO 3 INPUT
VIDEO L AUDIO R
SPEAKERS
EQ
SURR
LEVEL
SET UP
NAME
ENTER
B
B
C
MASTER VOLUME
+
–
0
1
2 3
4
5
8
6
7
qa
9
v
1
?/1
switch
Press to turn the receiver on and off.
2
DISPLAY button
Press repeatedly to change the information on the
display window as follows:
Press repeatedly to change the information on the
display window as follows:
Index name of the component or the preset station*
v
FUNCTION button indication or frequency**
v
Sound field applied to the program source
* Index name appears only when you have assigned one to the
component or preset station (see page 49). Index name does not
appear when only blank spaces have been entered, or it is the
same as the function button.
appear when only blank spaces have been entered, or it is the
same as the function button.
** Frequency appears only when the tuner is selected.
3
DIMMER button
Press DIMMER repeatedly to adjust the brightness of
the display (5 steps).
When set to the dimmest setting, the display is turned
off. However, when you press any button, the display
becomes the brightest setting temporary.
Press DIMMER repeatedly to adjust the brightness of
the display (5 steps).
When set to the dimmest setting, the display is turned
off. However, when you press any button, the display
becomes the brightest setting temporary.
4
The following buttons operate the built-in tuner. For
details, see “Receiving Broadcasts” starting from page 44.
details, see “Receiving Broadcasts” starting from page 44.
PRESET TUNING +/– buttons
Scan all preset stations.
Scan all preset stations.
TUNING +/- buttons
Scan all the available radio stations.
Scan all the available radio stations.
MEMORY button
Press to memorize a preset station.
Press to memorize a preset station.
SHIFT button
Selects a memory page for preset stations.
Selects a memory page for preset stations.
FM MODE button
If “STEREO” flashes in the display and the FM stereo
reception is poor, press this button. You will not have
the stereo effect but the sound is improved.
If “STEREO” flashes in the display and the FM stereo
reception is poor, press this button. You will not have
the stereo effect but the sound is improved.
FM button
Selects the FM band.
Selects the FM band.
AM button
Selects the AM band.
Selects the AM band.
5
MULTI CHANNEL DECODING indicator
This indicator lights up when the unit is decoding
signals recorded in a multi channel format.
This indicator lights up when the unit is decoding
signals recorded in a multi channel format.
6
Use the CINEMA STUDIO EX buttons to enjoy the
CINEMA STUDIO EX sound effects.
CINEMA STUDIO EX sound effects.
A/B/C buttons
Press to activate the CINEMA STUDIO EX A, B or C
sound field (page 32).
Press to activate the CINEMA STUDIO EX A, B or C
sound field (page 32).
7
Use the SOUND FIELD buttons to enjoy surround
sound. For details, see “Enjoying Surround Sound”
starting from page 30.
sound. For details, see “Enjoying Surround Sound”
starting from page 30.
A.F.D. button / indicator
Press to set the receiver to automatically detect the
type of audio signal being input and perform proper
decoding (if necessary).
Press to set the receiver to automatically detect the
type of audio signal being input and perform proper
decoding (if necessary).
MODE button / indicator
Press to activate the sound field selection mode (page
31).
Press to activate the sound field selection mode (page
31).
2CH button / indicator
Press to output sound from only the front (left and
right) speakers.
Press to output sound from only the front (left and
right) speakers.
8
MASTER VOLUME control
After turning on the component you selected, rotate to
adjust the volume.
After turning on the component you selected, rotate to
adjust the volume.
Press MODE to display And rotate FUNCTION to select
V:XXX
Any video source to enjoy with
the audio from the selected
component
the audio from the selected
component
A:XXX
Any audio source to enjoy with
the video from the selected
component
the video from the selected
component
qa
INPUT MODE button
Press INPUT MODE to select the input mode for your
digital components. Each time you press the button,
the input mode of the currently selected component
switches.
Press INPUT MODE to select the input mode for your
digital components. Each time you press the button,
the input mode of the currently selected component
switches.
Select
To
AUTO 2CH
Give priority to the analog audio
signals input to the AUDIO IN
(L/R) jacks when there is no
digital signals.
signals input to the AUDIO IN
(L/R) jacks when there is no
digital signals.
COAXIAL FIXED
Specify the digital audio signals
input to the DIGITAL COAXIAL
input jacks.
input to the DIGITAL COAXIAL
input jacks.
OPTICAL FIXED
Specify the digital audio signals
input to the DIGITAL OPTICAL
input jacks.
input to the DIGITAL OPTICAL
input jacks.
ANALOG 2CH FIXED
Specify the analog audio signals
input to the AUDIO IN (L/R)
jacks.
input to the AUDIO IN (L/R)
jacks.
When the MULTI CH is assigned to a specific function
using SET UP menu (page 51), “AUTO MULTI CH”
and “MULTI CH FIXED” are displayed instead of
“AUTO 2CH” and “ANALOG 2CH FIXED”.
using SET UP menu (page 51), “AUTO MULTI CH”
and “MULTI CH FIXED” are displayed instead of
“AUTO 2CH” and “ANALOG 2CH FIXED”.
Select
To
AUTO MULTI CH
Give priority to the analog audio
signals input to the MULTI CH
IN jacks when there is no digital
signals.
signals input to the MULTI CH
IN jacks when there is no digital
signals.
MULTI CH FIXED
Specify the analog audio signals
input to the MULTI CH IN jacks.
input to the MULTI CH IN jacks.
9
2ND ROOM button (STR-DE975 only)
Press repeatedly to select the audio signals for output
to a stereo amplifier or speakers in another room (page
12).
Each press selects another audio source (except
PHONO) to be output from the 2ND ROOM jacks.
“SOURCE” selects the same program source as the
main function controls.
Press repeatedly to select the audio signals for output
to a stereo amplifier or speakers in another room (page
12).
Each press selects another audio source (except
PHONO) to be output from the 2ND ROOM jacks.
“SOURCE” selects the same program source as the
main function controls.
• Even if 2ND ROOM is set to “SOURCE”, the sound from
front speakers (L/R) is not output when the receiver is set
to MULTI CH IN.
to MULTI CH IN.
• Only signals from components connected to the analog
inputs are output through the 2ND ROOM OUT jacks. No
signals are output from components connected to only the
digital input jacks.
signals are output from components connected to only the
digital input jacks.
0
FUNCTION control
Rotate to select the component you want to use.
Rotate to select the component you want to use.
To select
Rotate to display
VCR
VIDEO 1 or VIDEO 2
Camcorder or video game VIDEO 3 (STR-DE975 only)
DVD or LD player
DVD/LD
TV or satellite tuner
TV/SAT
Tape deck
TAPE (STR-DE975 only)
MD or Tape deck
MD/TAPE (STR-DE875 only)
MD or DAT deck
MD/DAT (STR-DE975 only)
CD or SACD player
CD/SACD
Built in tuner
TUNER
Turntable
PHONO
After selecting the component, turn on the component
you selected and play the program source.
you selected and play the program source.
• After selecting VCR, camcorder, video game, DVD player,
or LD player, turn on the TV and set the TV’s video input
to match the component you selected.
to match the component you selected.
MODE button
Press to select and play another video/audio source in
combination with the selected component.
Each time you press the button, the display changes as
follows:
Press to select and play another video/audio source in
combination with the selected component.
Each time you press the button, the display changes as
follows:
Standard display
t
V: XXX t A:XXX
selected component T
6
STR-DE875/DE975
?
/
1
DISPLAY
DIMMER
ON SCREEN
MEMORY SHIFT
FM MODE
FM
AM
PRESET
TUNING
TUNING
TUNING
–
+
–
+
MULTI CHANNEL DECODING
A.F.D.
SOUND FIELD
MULTI /2CH A. DIRECT
DIGITAL CONCERT HALL
EQUALIZER
MUTING
INPUT MODE
MODE
2ND ROOM
FUNCTION
6.1 CH DECODING
CINEMA STUDIO EX
A
A
MODE
2CH
PHONES
VIDEO 3 INPUT
VIDEO L AUDIO R
SPEAKERS
EQ
SURR
LEVEL
SET UP
NAME
ENTER
B
B
C
MASTER VOLUME
+
–
w;
qh
qk
ql
qj
qf
qd
qs
wh
wa
wg
wf
ws
wd
qg
qs
MUTING button
Press to mute the sound. MUTING appears in the
display when the sound is muted.
Press to mute the sound. MUTING appears in the
display when the sound is muted.
qd
6.1 CH DECODING button
Press 6.1 CH DECODING to adjust the 6.1 channel
matrix parameter in the SET UP menu (page 51).
This function works only for the multi channel format
[3/2].
This function is effective for the following sound
fields.
• A.F.D.*
• NORMAL SURROUND
• CINEMA STUDIO EX A-C
• SEMI CINEMA STUDIO EX A-C
• NIGHT THEATER
• MONO MOVIE
• STEREO MOVIE
• V. MULTI DIMENSION
• VIRTUAL MULTI REAR
• V. SEMI M. DIMENSION
• VIRTUAL ENHANCED A, B
Press 6.1 CH DECODING to adjust the 6.1 channel
matrix parameter in the SET UP menu (page 51).
This function works only for the multi channel format
[3/2].
This function is effective for the following sound
fields.
• A.F.D.*
• NORMAL SURROUND
• CINEMA STUDIO EX A-C
• SEMI CINEMA STUDIO EX A-C
• NIGHT THEATER
• MONO MOVIE
• STEREO MOVIE
• V. MULTI DIMENSION
• VIRTUAL MULTI REAR
• V. SEMI M. DIMENSION
• VIRTUAL ENHANCED A, B
* “AUTO” only.
qf
EQUALIZER button
Press to turn the equalizer on or off. The EQ indicator
in the display lights when the equalizer is turned on.
When you adjust the equalizer using the EQ
parameters (page 38), the settings are stored
automatically and can be reproduced wherever you
turn on the equalizer.
Press to turn the equalizer on or off. The EQ indicator
in the display lights when the equalizer is turned on.
When you adjust the equalizer using the EQ
parameters (page 38), the settings are stored
automatically and can be reproduced wherever you
turn on the equalizer.
• The equalizer is not compatible with 96 kHz digital audio
signals and during MULTI CH IN input.
qg
DIGITAL CONCERT HALL buttons
Use the DIGITAL CONCERT HALL buttons to enjoy
the DIGITAL CONCERT HALL sound effects.
Use the DIGITAL CONCERT HALL buttons to enjoy
the DIGITAL CONCERT HALL sound effects.
A/B buttons
Press to activate the DIGITAL CONCERT HALL A or
B sound field (page 32).
Press to activate the DIGITAL CONCERT HALL A or
B sound field (page 32).
qh
MULTI/2CH A. DIRECT button
Press MULTI/2CH A. DIRECT to enjoy the audio
source connected to the MULTI CH IN jacks or analog
2 channel input jacks. Only volume control and the
front speaker balance can be adjusted when set to 2CH
ANALOG DIRECT. When set to MULTI DIRECT, you
can adjust balance and level of all the speakers. When
this function is on, the surround effects are turned off.
Press MULTI/2CH A. DIRECT to enjoy the audio
source connected to the MULTI CH IN jacks or analog
2 channel input jacks. Only volume control and the
front speaker balance can be adjusted when set to 2CH
ANALOG DIRECT. When set to MULTI DIRECT, you
can adjust balance and level of all the speakers. When
this function is on, the surround effects are turned off.
Select
To
MULTI
Enjoy the audio source connected
to the MULTI CH IN jacks.
MULTI CH IN indicator lights up
in the display. This mode is
suitable for enjoying high quality
analog source.
to the MULTI CH IN jacks.
MULTI CH IN indicator lights up
in the display. This mode is
suitable for enjoying high quality
analog source.
2CH A. DIRECT
Enjoy the audio source connected
to analog 2 channel jacks. This
mode is suitable for enjoying
high quality analog source.
to analog 2 channel jacks. This
mode is suitable for enjoying
high quality analog source.
qj
SET UP button
Press to activate the setup mode, then use the cursor
buttons (wa) to select any of the following indications.
You can then make various settings using the jog dial
(w;). For details, see “Adjustment Using the SET UP
Button” starting from page 51.
Press to activate the setup mode, then use the cursor
buttons (wa) to select any of the following indications.
You can then make various settings using the jog dial
(w;). For details, see “Adjustment Using the SET UP
Button” starting from page 51.
qk
NAME button
Press to activate the name function and enter names
for preset stations and program sources (page 49).
Press to activate the name function and enter names
for preset stations and program sources (page 49).
ql
ENTER button
Press to enter individual characters for the preset
station and program source names.
Press to enter individual characters for the preset
station and program source names.
w;
Jog dial
Turn to adjust the selected speaker level, surround,
and equalizer parameters (etc.).
Turn to adjust the selected speaker level, surround,
and equalizer parameters (etc.).
wa
Cursor buttons (
/
)
Press to select various speaker level, surround, and
equalizer parameters (etc.).
equalizer parameters (etc.).
ws
EQ button
Press to activate the equalizer parameters (page 38).
The indicator on the button lights up and you can
adjust the various equalizer parameters.
Press to activate the equalizer parameters (page 38).
The indicator on the button lights up and you can
adjust the various equalizer parameters.
wd
SURR button
Press to activate the surround parameters (page 36).
The indicator on the button lights up and you can
adjust the various surround parameters (effect level,
wall type, etc.).
Press to activate the surround parameters (page 36).
The indicator on the button lights up and you can
adjust the various surround parameters (effect level,
wall type, etc.).
wf
LEVEL button
Press to activate the speaker level parameters (page
37). The indicator on the button lights up and you can
adjust the various speaker level parameters (front
balance, surround balance, etc.).
Press to activate the speaker level parameters (page
37). The indicator on the button lights up and you can
adjust the various speaker level parameters (front
balance, surround balance, etc.).
wg
ON SCREEN button (STR-DE975 only)
Press to turn the on-screen display on or off (page 8).
Press to display the current sound field, and the
parameters for SURR, LEVEL, EQ, and SET UP. Press
again to turn off the on-screen display.
Press to turn the on-screen display on or off (page 8).
Press to display the current sound field, and the
parameters for SURR, LEVEL, EQ, and SET UP. Press
again to turn off the on-screen display.
wh
SPEAKERS button
Press SPEAKERS button to ON. Press again to OFF.
Press SPEAKERS button to ON. Press again to OFF.
PHONES jack
Connects headphones.
Connects headphones.
• When you connect the headphones, no sound will come
from the speakers and “SP. OFF” lights up in the display.