Sony STR-DE875, STR-DE975 Service Manual
STR-DE875/DE975
SERVICE MANUAL
Ver 1.0 2001. 05
Photo : BLACK
Dolby Laboratories Licensing Corporation.
“DOLBY” the double-D symbol ; “AC-3” and “PRO LOGIC”
are trademarks of Dolby Laboratories Licensing Corporation.
SPECIFICATIONS
AUDIO POWER
SPECIFICATIONS
POWER OUTPUT AND
TOTAL HARMONIC
DISTORTION:
With 8 ohm loads, both
channels driven, from 20 20,000 Hz; rated 110 watts
(STR-DE975) and 100 watts
(STR-DE875) per channel
minimum RMS power,
with no more than 0.09 %
total harmonic distortion
from 250 milliwatts to
rated output (USA model
only).
Amplifier section
US, Canadian MODELS
Rated Power Output at Stereo mode
Reference Power Output
(8 ohms 20 Hz - 20 kHz,
THD 0.09%)
STR-DE975:
110 W + 110W
STR-DE875:
100 W + 100W
(8 ohms at 1 kHz, THD
0.7%)
STR-DE975:
1)
Front
: 110 W/ch
1)
Center
: 110 W
1)
: 110 W/ch
Surround
STR-DE875:
1)
Front
: 100 W/ch
1)
Center
: 100 W
1)
Surround
: 100 W/ch
AEP, UK MODELS :
Rated Power Output at Stereo mode
Reference Power Output
Chinese MODEL :
Rated Power output at Stereo mode
Reference Power output
Others :
Rated Power Output at Stereo Mode
Reference Power Output
1) Depending on the sound field settings and
sources, there may be no sound output.
(8 ohms 1 kHz, THD
0.7%)
100 W + 100 W
(8 ohms 1 kHz, THD
0.7%)
Front
: 100 W/ch
Center
: 100 W
Surround
: 100 W/ch
(8 ohms 1 kHz, THD
0.7%)
90 W + 90 W
(at 220 V AC, 50 Hz)
100 W + 100 W
(at 230 V AC, 50 Hz)
(8 ohms 1 kHz, THD
10% at 230 V AC, 50
Hz)
Front
: 110 W/ch
Center
: 110 W
Surround
: 110 W/ch
(8 ohms 1 kHz, THD
0.7 %)
100 W + 100
(8 ohms 1 kHz, THD
10 %)
110 W/ch
FRONT :
CENTER
: 110 W
SURROUND :
W
110 W/ch
Canadian Model
Chinese Model
Australian Model
AEP, UK MODELS :
Frequency response
Others :
Frequency response
Inputs (Analog)
a) Input short.
b) Weighted network, input level
PHONO: RIAA
equalization curve
±0.5 dB
MULTI CH IN,
CD/SACD, MD/TAPE,
DVD/LD, TV/SAT,
VIDEO 1, VIDEO 2 :
10 Hz - 100 kHz +0.5/–3 dB
(with sound field,
and equalizer by passed)
PHONO: RIAA
equalization curve
±0.5 dB
MULTI CH IN,
CD/SACD, MD/DAT*,
MD/TAPE**,
DVD/LD, TV/SAT,
VIDEO 1, VIDEO 2
VIDEO 3*:
10 Hz - 50 kHz +0.5/–2 dB
(with sound field
and equalizer by passed)
PHONO:
Sensitivity: 4.0 mV
Impedance:
50 kilohms
a)
S/N
: 86 dB
(A, 4.0 mV
MULTI CH IN,
CD/SACD, DVD/LD,
MD/DAT*, MD/TAPE**,
TV/SAT, VIDEO 1,
VIDEO 2 VIDEO 3*:
Sensitivity: 250 mV
Impedance: 50 kilohms
a)
S/N
: 96 dB(A, 250 mV
US Model
STR-DE875/DE975
AEP Model
UK Model
E Model
STR-DE875
b)
)
b)
)
— Continued on next page —
9-873-911-11
2001E1600-1
© 2001.5
FM STEREO FM-AM RECEIVER
Sony Corporation
Home Audio Company
Shinagawa Tec Service Manual Production Group
STR-DE875/DE975
Inputs (Digital)
DVD/LD (coaxial):
Sensitivity: –
Impedance: 75 ohms
S/N: 100 dB
(A, 20 kHz LPF)
DVD/LD, TV/SAT,
MD/DAT*,
MD/TAPE**
(Optical):
Sensitivity: –
Impedance: –
S/N: 100 dB
(A, 20 kHz LPF)
Outputs MD/DAT*,
MD/TAPE** (OUT);
VIDEO 1, VIDEO 2:
(AUDIO OUT):
Voltage: 250 mV,
Impedance: 10
kilohms
SUB WOOFER:
Voltage: 2 V
Impedance: 1
kilohms
PHONES:
Accepts low- and
high-impedance
headphones
EQ BASS:
99 Hz~1.0 kHz
(21 steps)
MID:
198 Hz~10 kHz
(37 steps)
TREBLE:
1.0 kHz~10 kHz
(23 steps)
Gain levels:
Sampling Frequency
±10 dB, 1dB step
48 kHz (TV/SAT,
MD/DAT*,
MD/TAPE**
OPTICAL IN)
96 kHz (DVD/LD
OPTICAL IN,
COAXIAL IN)
* STR-DE975 only
** STR-DE875 only
FM tuner section
Tuning range
Antenna terminals
Intermediate frequency
Sensitivity Mono: 18.3 dBf,
Usable sensitivity
S/N Mono: 76 dB
87.5 - 108.0 MH
75 ohms, unbalanced
10.7 MHz
2.2 µV/75 ohms
Stereo: 38.3 dBf
22.5 µV/75 ohms
11.2 dBf, 1 µV/75 ohms
Stereo: 70 dB
Harmonic distortion at 1 kHz
Mono: 0.3%
Stereo: 0.5%
Separation 45 dB at 1 kHz
Frequency response
30 Hz - 15 kHz +0.5/–2
dB
Selectivity 60 dB at 400 kHz
AM tuner section
Tuning range
Antenna Loop antenna
Intermediate frequency
Usable sensitivity
S/N 54 dB (at 50 mV/m)
Harmonic distortion
Selectivity
c) You can change the AM tuning interval to 9
kHz. After tuning in any AM station, turn
off the receiver. Hold down the PRESET
TUNING + button and press the ?/1
button. All preset stations will be erased
when you change the tuning interval. To
reset the scale to 10 kHz, repeat the
procedure.
d) You can change the AM tuning interval to
10 kHz. After tuning in any AM station,
turn off the receiver. Hold down the
TUNING + button and press the 1/u
button. All preset stations will be erased
when you change the tuning interval. To
reset the scale to 9 kHz, repeat the procedure.
US, Canadian MODELS :
With 10-kHz tuning scale:
530 - 1710 kHz
With 9-kHz tuning scale:
531 - 1710 kHz
c)
c)
AEP, UK MODELS :
531 - 1602 kHz
E MODEL :
530 - 1610 kHz (10 kHz
d)
step)
531 - 1602 kHz (9 kHz
d)
step)
Others :
531 - 1602 kHz (9 kHz
step)
450 kHz
AEP, UK MODELS :
50 dB/m (at 999 kHz)
Others :
50 dB/m (at 1,000 kHz
or 999 kHz)
0.5 % (50 mV/m,
400 Hz)
AEP, UK MODELS :
35 dB
Others :
At 9 kHz: 35 dB
At 10 kHz: 40 dB
Video section
Inputs Video: 1 Vp-p 75 ohms
Outputs Video: 1 Vp-p 75 ohms
S-video:
Y: 1 Vp-p 75 ohms
C: 0.286 Vp-p 75 ohms
S-video:
Y: 1 Vp-p 75 ohms
C: 0.286 Vp-p 75 ohms
General
System Tuner section:
Power requirements
Power consumption
AC outlets
Dimensions 430 × 157.5 × 369 mm
Mass (Approx.)
Supplied accessories
• FM wire antenna (1)
• AM loop antenna (1)
• R6 (size-AA) batteries (2)
• US, Canadian model only
• Audio/video/control S connecting cord (1)
• Control S connecting cord (1)
• STR-DE975 only
• Remote commander RM-PP505L (remote) (1)
• STR-DE875 : US, Canadian, E, Malaysia,
Singapore, Chinese, Australian model only
• Remote commander RM-PP505 (remote) (1)
• STR-DE875 : AEP, UK model only
• Commander, standard RM-U305A (remote)
Design and specifications are subject
to change without notice.
PLL quartz-locked
digital synthesizer
system
Preamplifier section:
Low-noise NF type
equalizer
Power amplifier
section:
Pure-complementary
SEPP
US, Canadian MODELS :
120 V AC, 60 Hz
AEP, UK MODELS :
230 V AC, 50/60 Hz
E MODEL :
120/220/240 V AC, 50/60 Hz
Australian MODEL :
240 V AC, 50 Hz
Others :
220-230 V AC, 50/60 Hz
US MODEL :
STR-DE975: 270 W
In standby condition:
0.9 W
STR-DE875: 260 W
In standby condition:
0.9 W
Canadian MODEL :
STR-DE975: 350 VA
In standby condition:
0.9 W
STR-DE875: 340 VA
In standby condition:
0.9 W
Others :
220 W
In standby condition:
0.9 W
US, Canadian MODELS :
2 switched, total
120 W/1A Max
AEP, UK MODELS :
1 switched, max 100 W
E, Chinese MODELS :
2 switched, total 100 W max
Others :
1 switched, total 100 W max
(17 × 6 1/8 × 14 4/8 in.)
including projecting
parts and controls
9.5 kg (20 lbs. 16 oz.)
2
STR-DE875/DE975
SAFETY CHECK-OUT
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.
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.
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 2V AC range are suitable. (See
Fig. A)
MODEL IDENTIFICATION
— BACK PANEL —
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
Parts No.
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
To Exposed Metal
Parts on Set
AC
0.15 µF
Fig. A. Using an AC voltmeter to check AC leakage.
1.5 kΩ
Earth Ground
Voltmeter
(0.75 V)
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 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.
3
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
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
4. EXPLODED VIEWS
4-1. Front Panel Section .......................................................... 36
4-2. Chassis Section .................................................................37
5. ELECTRICAL PARTS LIST ······································· 39
4
SECTION 1
GENERAL
STR-DE875/DE975
This section is extracted
from instruction manual.
1
23 4 5
? / 1
SPEAKERS
PHONES
VIDEO 3 INPUT
VIDEO L AUDIO R
DISPLAY
DIMMER
ON SCREEN
MEMORY SHIFT FM MODE FM AM
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:
Index name of the component or the preset station*
FUNCTION button indication or frequency**
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.
** Frequency appears only when the tuner is selected.
v
v
v
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.
The following buttons operate the built-in tuner. For
4
details, see “Receiving Broadcasts” starting from page 44.
PRESET TUNING +/– buttons
Scan all preset stations.
TUNING +/- buttons
Scan all the available radio stations.
MEMORY button
Press to memorize a preset station.
SHIFT button
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.
FM button
Selects the FM band.
AM button
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.
6 Use the CINEMA STUDIO EX buttons to enjoy the
CINEMA STUDIO EX sound effects.
A/B/C buttons
Press to activate the CINEMA STUDIO EX A, B or C
sound field (page 32).
MULTI CHANNEL DECODING
LEVEL
PRESET
+
–
TUNING
SURR
EQ
+
–
TUNING
SET UP
NAME
ENTER
A.F.D.
7 Use the SOUND FIELD buttons to enjoy surround
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).
MODE button / indicator
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.
8 MASTER VOLUME control
After turning on the component you selected, rotate to
adjust the volume.
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.
• 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.
• 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.
0 FUNCTION control
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.
• 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.
6
CINEMA STUDIO EX
AA
BBC
SOUND FIELD
MODE 2CH
DIGITAL CONCERT HALL
MULTI /2CH A. DIRECT
7
8
MASTER VOLUME
+
–
6.1 CH DECODING
MUTING
FUNCTION
EQUALIZER
INPUT MODE
MODE
qa
0
2ND ROOM
9
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:
Standard display
t V:XXX t A:XXX
selected component T
Press MODE to display And rotate FUNCTION to select
V:XXX Any video source to enjoy with
A:XXX Any audio source to enjoy with
the audio 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.
Select To
AUTO 2CH Give priority to the analog audio
COAXIAL FIXED Specify the digital audio signals
OPTICAL FIXED Specify the digital audio signals
ANALOG 2CH FIXED Specify the analog audio signals
signals input to the AUDIO IN
(L/R) jacks when there is no
digital signals.
input to the DIGITAL COAXIAL
input jacks.
input to the DIGITAL OPTICAL
input 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”.
Select To
AUTO MULTI CH Give priority to the analog audio
MULTI CH FIXED Specify the analog audio signals
signals input to the MULTI CH
IN jacks when there is no digital
signals.
input to the MULTI CH IN jacks.
5
STR-DE875/DE975
? / 1
SPEAKERS
PHONES
VIDEO 3 INPUT
VIDEO L AUDIO R
wh
DISPLAY
DIMMER
ON SCREEN
PRESET
+
–
TUNING
MEMORY SHIFT FM MODE FM AM
wg wf wswd
qs MUTING button
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
* “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.
• 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.
A/B buttons
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.
Select To
MULTI Enjoy the audio source connected
2CH A. DIRECT 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 analog 2 channel jacks. This
mode is suitable for enjoying
high quality analog source.
qs
–
MUTING
INPUT MODE
MODE
MASTER VOLUME
+
FUNCTION
2ND ROOM
MULTI CHANNEL DECODING
LEVEL
SURR
EQ
+
–
TUNING
wa
w;
SET UP
ql
NAME
ENTER
A.F.D.
qk
qj
CINEMA STUDIO EX
AA
BBC
SOUND FIELD
MODE 2CH
DIGITAL CONCERT HALL
MULTI /2CH A. DIRECT
qh
6.1 CH DECODING
EQUALIZER
qf
qg
qd
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.
qk NAME button
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.
w; Jog dial
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.).
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.
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.).
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.).
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.
wh SPEAKERS button
Press SPEAKERS button to ON. Press again to OFF.
PHONES jack
Connects headphones.
• When you connect the headphones, no sound will come
from the speakers and “SP. OFF” lights up in the display
.
6
SECTION 2
TEST MODE
STR-DE875/DE975
FACTORY PRESET MODE
* All preset contents are reset to the default setting.
* Procedure:
While depressing the SET UP and the DIMMER buttons simultaneously, press the power
The message “TUNER FACTORY PRESET” appears and the
present contents are reset to the default values.
button to turn on the main power.
?/1
AM CHANNEL STEP 9 KHZ/10 KHZ
SELECTION MODE
* Either the 9 kHz step or 10 kHz step can be selected for the AM
channel step.
* Procedure:
Set the FUNCTION to AM. Turn off the main power.
While depressing the PRESET TUNING+ button, press the power.
button to turn on the main power. Either the message 9 k
?/1
STEP or 10 k STEP appears. Select the desired step.
* For US/Canadian/E model only
FLUORESCENT INDICATOR TUBE TEST MODE
* All fluorescent segments are tested. When this test is activated,
all segments turn on at the same time, then each segment turns on
one after another.
* Procedure:
While depressing the A.F.D. and the DIMMER buttons simultaneously, press the power
1. All segments turn on.
VIDEO 3 , SURR , LEVEL , SOUND FIELD MODE and
MULTI/2CH A. DIRECT LEDs turn on.
2. Press the A.F.D. or the DIMMER button, confirm display.
(Display)
MULTI CHANNEL DECODING (blue), VIDEO 1 , DVD/LD ,
EQ , NAME and A.F.D. LEDs turn on.
3. Press the A.F.D. or the DIMMER button, confirm display.
(Display)
Digital Cinema Sound , VIDEO 2 , TV/SAT ,
6.1CH DECODING , SET UP and 2CH LEDs turn on.
button to turn on the main power.
?/1
SOUND FIELD CLEAR MODE
* The preset sound field is cleared when this mode is activated.
Use this mode before returning the product to clients upon
completion of repair.
* Procedure:
While depressing the SOUND FIELD MODE button, press the
power
“S.F Initialize” appears and initialization is performed.
button to turn on the main power. The message
?/1
DEMONSTRATION MODE
* Demonstration is performed.
* Procedure :
While depressing the SET UP button, press the power
button. The message appears and demonstration is performed.
* To finish DEMONSTRATION MODE, press the power
button while the introduction message appears in the display.
?/1
?/1
VERSION DISPLAY MODE
* The version is displayed.
* Procedure:
While depressing the MUTING and the DIMMER buttons
simultaneously, press the power
power. The massage “VERSION” and the version number are
displayed.
button to turn on the main
?/1
KEY CHECK MODE
* Button check
* Procedure:
While depressing the LEVEL and the DISPLAY buttons
simultaneously, press the power
power.
“Rest 36 Key” appears.
Every pressing of any button other than ?/1 counts down the
buttons. The buttons which are already counted once are not
counted again. When all buttons are pressed “Rest 00 Key”
appears.
button to turn on the main
?/1
AUTOBETICAL MODE (DE875: AEP, UK)
* This mode is installed in the Europe models only. When this mode
is used, the receiver scans the broadcasts that can be received by
tuner, and sets up the broadcasts. Be sure to start scanning after
connecting the antenna.
Procedure:
Check that the antenna is connected. Press the ?/1 button while
pressing the MEMORY button to turn on the power. The message
appears and scanning starts by tuner.
4. Press the A.F.D. or the DIMMER button, All segments turn
off. ALL LEDs turn off.
5. Every pressing of the A.F.D. or the DIMMER button turns on
each segment and LED one after another in the same order.
7
STR-DE875/DE975
3-1. CIRCUIT BOARDS LOCATION
SECTION 3
DIAGRAMS
POWER SWITCH board
HEADPHONE board
VIDEO 3 board
(DE975)
AC SELECT board
STANDBY board
DISPLAY board
SPEAKER board
VIDEO board
S-VIDEO board
2 ND-AUDIO board
(DE975)
DIGITAL board
MAIN board
JOG board
8
STR-DE875/DE975
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this necessary note is printed in each
block.)
For schematic diagrams.
Note:
• All capacitors are in µF unless otherwise noted. p : pF. 50
WV or less are not indicated except for electrolytics and
tantalums.
• All resistors are in Ω and 1/
specified.
• % : indicates tolerance.
f
•
• 2 : nonflammable resistor.
• 1 : fusible resistor.
• C : panel designation.
: internal component.
Note:
The components identified by
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
W or less unless otherwise
4
Note:
Les composants identifiés par
une marque 0 sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce portant le numéro spécifié.
For printed wiring boards.
Note:
• X : parts extracted from the component side.
a
•
•
• : Pattern from the side which enables seeing.
Caution:
Pattern face side: Parts on the pattern face side seen from
(Side A) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(Side B) the parts face are indicated.
: Through hole.
f
: internal component.
C
Q
B
E
B
CE
These are omitted.
These are omitted.
• Waveform
VIDEO Board
1
IC252 8 (EXS)
69.90ns
5.5Vp-p
DIGITAL Board
2 IC1306 7 (IY)
4.0Vp-p
40.69ns
3 IC1501 qs (MCLK2)
4.0Vp-p
74.17ns
4 IC1101 tj (XI)
3.8Vp-p
60.44ns
• A : B+ Line.
• B : B– Line.
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
No mark : FM
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal production tolerances.
• Waveforms are taken with a oscilloscope.
• Circled numbers refer to waveforms.
• Signal path.
F : FM
J : CD (ANALOG)
c : DVD (DIGITAL)
• Abbreviation
CND : Canadian model
MY : Malaysia model
SP : Singapore model
CH : Chinese model
AUS : Australian model
99
STR-DE875/DE975
3-2. BLOCK DIAGRAMS – MAIN SECTION –
TUNER UNIT
L OUT
ANTENNA
DE975
VIDEO 3
MONITOR
TV/SAT
DVD/LD
VIDEO 2
VIDEO 1
TV/SAT
DVD/LD
VIDEO 1
DE975/DE875:US,CND
VIDEO 1
DVD/LD
TV/SAT
MONITOR
FM
AM
VIDEO IN
VIDEO OUT
VIDEO IN
VIDEO IN
VIDEO OUT
VIDEO IN
VIDEO OUT
VIDEO IN
S VIDEO IN
J202
S VIDEO IN
J203(1/2)
S VIDEO IN
CTRL A1 II
CTRL S OUT
CTRL S OUT
CTRL S STATUS IN
CTRL S IN
FM
AM
J140(2/2)
R OUT
DATA
CLOCK
STEREO
TUNED
MUTING
FM IFOUT
DET OUT
J251
J252
J253
J204
J205
J206
J207
J208
DO
CE
DE975
R-CH
DE875:AEP,UK
IC1201
2
4
RDS
16
14
13
X1201
4.33MHz
IC252
ON-SCREEN DISPLAY
CONTROLLER
9
XS
8
EXS
16
XD
15
EXD
VOUT
25
YOUT
27
COUT
26
REMOTE CONTROL I/F
11
10
13
C
SIN
SCLK
CS
VIN
YIN
CIN
IC203
O3-1
O2-1
O3-2
O2-2
IN1
OUT1
SIRCS OUT
X251
14.31818MHz
L251
IC253
VIDEO DRIVER
VIN
VOUT
7
8
6
VIDEO SWITCH
7
V3
1
M.OUT
3
TV
5
LD
11
V2.OUT
9
V2.IN
15
V1.OUT
13
V1.IN
Y
C
Y
C
Y
C
Y SWITCH
3
TV
5
LD
13
V1.IN
C SWITCH
3
TV
5
LD
13
V1.IN
IC251
IC201
IC202
YOUT
COUT
SW1
SW2
SW3
SW4
SW5
SW1
SW2
SW3
SW4
SW5
M.OUT
SW1
SW2
SW3
SW4
SW5
M.OUT
Q201,202
BUFFER
3
YIN
2
CIN
1
14
10
4
6
2
15V1.OUT
14
10
4
6
2
1
15V1.OUT
14
10
4
6
2
1
IC1101(1/3)
SYSTEM CONTROLLER
28
TUNER_DO
30
T.DATA
29
TUNER_SERIAL.CLK
31
T.LAT
23
STEREO
24
TUNER_AUTO_STOP
25
TUNER_MUTE
139
RDS_SIGNAL
32
RDS DATA
61
RDS CLK
+5V
IC1141
2
106
+5V
VIDEO 1
J201
OSD DATA
105
OSD CLK
107
OSD LAT
33
V.SW1
34
V.SW2
35
V.SW3
36
V.SW4
87
A1 OUT
86
A1 IN
65
MBUS_VIDEO
64
MBUS_DVD
51
MBUS_STATUS_OUT
63
MBUS_TV
3
23
22
2
3
1
2
6
7
IN3
4
2
Y
C
Y
C
Q204
CRAMP
11
6
3
11
8
8
IC1171
BUFFER
Q1101
BUFFER
Q1102
1
12
13
9
10
Q203
CRAMP
4
5
1
2
13
12
10
9
J203(2/2)
S VIDEO OUT
MONITOR
S VIDEO OUT
DE975
DE975
DIGITAL
VIDEO 3
2ND ROOM
PHONO IN
CD/SACD
MD/DAT
TAPE
TV/SAT
DVD/LD
VIDEO 2
VIDEO 1
MULTI
CH IN
SUB WOOFER
COAXIAL
OPTICAL
MD/DAT
MD/DAT
1
X1301
24.576MHz
AUDIO IN
OUT
IN
OUT
IN
OUT
IN
AUDIO IN
AUDIO IN
AUDIO OUT
AUDIO IN
AUDIO OUT
AUDIO IN
FRONT
SURROUND
CENTER
DVD/LD
IN
DVD/LD
IN
TV/SAT
IN
IN
OUT
IC1306
7
62
3
J140(1/2)
J761
RY761
3
2ND_LAT
2ND_LAT
Q781
RELAY
DRIVER
IC1303
5
62
IC1302
5
7
SELECTOR
6
14
12.288MHz
70 69 46 67 71 73 45 72
42
DI
D.DO
TC74HC153_A
DIR CLK
2ND_RY
J301
J302
J303
2ND_LAT 2ND_LAT
J304
J305
J306
J307
J1301
IC1351
OPTICAL
INPUT
IC1352
OPTICAL
INPUT
IC1353
OPTICAL
INPUT
IC1354
OPTICAL
OUTPUT
IC1305
DIVIDER
1 5
5
2ND_RY
1 2
2ND_RY
DIR CE
5
3
4
2
22
35
36
38
37
1
IC1301
DIGITAL AUDIO
I/F RECEIVER
DIN2
DIN0
DIN1
DOUT
XIN
DO
DI
CLK
CE
ERROR34XSTATE17XMODE
ERROR
XSTATE
IC761
XMCK
BCK
LRCK
CK OUT
DATAO
48
47
43
DIR XMODE
20
14
15
13
16
24AUDIO
CKSEL1
DIR CKSEL1
331
IC1402
31
88
DATA0
PCM1800.RST
IC301
EQ AMP
1
14
13
16
6
2
1
IC1304
LIN
BCK
LRCK
SYSCLK
RSTB
6
115
10
TUNER
4
TUNER
12
2ND
11
CD
3
CD
9
MD/DAT
5
MD/DAT
8
TAPE
6
TAPE
7
VISUAL
2ND_DATA
15
KFSI0
BCKI2
LRCKI2
LRCKI1
BCKI1
SDI1
SDI2
GP8
GP9
HD OUT
HD IN
HCLK
HCS
HACN
113
85
PM
9617.PM
IC1501
AUDIO DSP1
BCKO1
MCLK1
MCLK2
BST56XRST
81
84
9617.BST
9617.XRST
DATA
CLK
14
LAT
16
SDO1
SDO2
SDO3
SDO4
PLOCK
72
59
48
DSP1.PLL1
IC1401
ADC
5
80
9617.GP9
FREQ SEL
D
DOUT
47
DSP1.HD OUT
2ND_CLK
15
22
29
28
15
17
18
30
69
68
35
33
34
36
32
82 83 103 102
9617.HCS
9617.HACN
SELECTOR
20
19LRCKO
67GP10
23
24
25
26
9
12
EXLOCK
IC302
OUTPUT
IC1502
SRAM
X1501
13.59MHz
2
49
104
DSP2.GP3
SYSTEM CONTROLLER
HDOUT2
79
HDIN2
9616.HCLK2
IC1101(2/3)
78
9616.HCS2
9616.HACN2
131
62
38
29
27
28
35
39
120
82
74
75
76
83
IC1551
AUDIO DSP2
SCK OUT
KFSI0
BCKI1
LRCKI1
SDI1
SDI2
SDI3
SDI4
GP1
GP3
HD OUT
HD IN
HCLK
HCS
HACN
140
76
10
BCKO
64
63LRCKO
132GP0
111GP7
SDO1
60
SDO2
61
SDO3
25
IC1552
SRAM
MCLK1
144
X1551
13.5MHz
139
EXLOCK
PLOCK
136
50 92 91 90 89
PLL2
DSP2.EXLOCK
PM
BST
141
75
D2.BST2
9616.PM2
XRST
74
D2.XRST2
MCLK2
168
38
SCKI
40
BCK
41
LRCK
45
DATA1
46
DATA2
47
DATA3
93108
IC1451
DAC
VOUT1
VOUT3
VOUT5
VOUT6
MDO33MDI
34MC35ML36
PCM1604.MC
PCM1604.MDI
PCM1604.MDO
(ANALOG)
IC1403
67
14
IC1404
67
12
IC1405(1/2)
67
10
IC1405(2/2)
21
9
RST
37
116 117 118 121 120
VOL_IC.LAT
VOL_IC.CLK
PCM1604.ML
VOL_IC.DATA
PCM1604.RST
• R-CH is omitted due to same as L-CH.
• Signal Path
: FM
: CD/SACD
: DVD/LD (DIGITAL)
IC303
ANALOG SOUND
PROCESSOR
71
L IN7
2
L IN9
4
L REC4
70
L IN6
67
L REC3
68
L IN4
64
L IN3
66
L REC2
63
L IN2
61
L REC1
62
L IN1
11
AL IN
13
ASL IN
16
ASW IN
15
AC IN
10
AL OUT
27
DL IN
29
DSL IN
31
DC IN
32
DSW IN
20
DATA
21
CLOCK
22
LATCH
Q1103,1104
MUTING
CONT
Q1105
SWITCH
ANA/DIG
SYSTEM_MUTE
L OUT
SL OUT
C OUT
SW OUT
MUTING
SWITCH
Q771
SOT1
51
Q401
MUTING
47
Q501
MUTING
L
SL
SL
A
FLASH 1
FLASH 2
RESET
C
SW
CNP503
MD0
VDD
FLASH
MD2
PROGRAMMING
39
Q601
MUTING
35
Q651
MUTING
+3.3V
54MD0
MD1
53
MD2
52
109
SIN1
110
B
1010
– DISPLAY/POWER SECTION –
STR-DE875/DE975
+5V (STBY)
D
• R-CH is omitted due to same as L-CH
• Signal Path
FL101
FLUORESCENT
INDICATOR TUBE
FL1 FL2
223
1,70 37
G1-22
P1-35
IC101
FL DRIVER
DIN30CLK31LAT32CL
28
3
8
11
12
9910
121213
112
111
113
FL CLK
FL DIN/F1
FL LAT/F2
X1
X0
58 57
X1101
16.5MHz
: FM
: CD/SACD
: DVD/LD (DIGITAL)
6
45
114
FL DRV.CLR
AD1
132
FUNCTION
KEY
2ND_DATA
2ND_CLK
FUNCTION
S111-117S101-107
DE975
D101-117
22 1
30 ,10,9, 7
IC102
LED DRIVER
DATA17CLK18STB19CLR
16
IC1151IC1161
3
6
8
12
45
10
4
3
2ND_CLK
2ND_DATA
AD2
133
KEY
S118
FUNCTION
S121-127
A
11
13
6
LED_DRV_CE
AD3
134
KEY
L
SLSL
C
SW
5
LED_DRV_CL
119
AD4
135
FUNCTION
KEY
S131-136
Q721,722
POWER
MUTING
AC MUTE
AD5
136
FUNCTION
KEY
S141-146
S147
DE975
IC551
POWER AMP
+V OUT2
12
LIMITER
8
NF2
IN2
9
LIMITER
-V OUT2
11
2+V OUT1
LIMITER
6
NF1
IN1
5
1
MUTING
-V OUT1
IC601
POWER AMP
+V OUT
1
IN+
20
15
PROTECTOR
SYSTEM CONTROLLER
(CURSOR) FUNCTION MASTER VOLUME
3
6
IN-
2
5-V OUT
16
HP_RY
SP_A_RY
IC1101(3/3)
CURSOR_JOG_3B
CURSOR_JOG_3A
8
7
3 1
ENCODER
RV103
LIMITER
LIMITER
LIMITER
18
Q421
Q422
Q521
Q522
Q621
Q622
17
REAR_RY
CENTER_RY
FUNCTION_JOG_1B
FUNCTION_JOG_1A
11
10
3 1
ENCODER
RV102
Q423
BOOSTER
Q424
BOOSTER
Q523
BOOSTER
Q524
BOOSTER
Q623
BOOSTER
Q624
BOOSTER
19
WOOFER_RY
IC304
3 1
VOL_JOG_2B12VOL_JOG_2A
13
3 1
ENCODER
RV101
Q425,426
CURRENT
DETECT
Q525,526
CURRENT
DETECT
Q625,626
CURRENT
DETECT
D752
IC1131
EEPROM
SDA
5
99 100
EEPROM.SDA
PW_ON/OFF
62
S161
Q751-753
PROTECT
SWITCH
SCL
6
EEPROM.SCL
SPK_SEL
14
AF POWER
PROTECT
AF POWER
PROTECT
AF POWER
PROTECT
S151
SPEAKERS
Q427
Q527
Q627
21
PW_RY22SUB-T
41
21
HP_CTRL
VOLT_DETEC_STOP
D432
D532
D632
IC305
57
SIRCS
RSTX
J701
AUDIO
OUT
+3.3V
(IC303)
TUNER
+3.3V
ANALOG
+5V
PHONES
FRONT
SURROUND
CENTER
WOOFER
3 1
3 1
3 1
SUB
POWER AMP
Q821
+3.3V REG
IC1071
+3.3V
REG
IC1001
+5V
REG
IC1011
+5V
REG
Q921
VOLTAGE
DET
SPEAKERS
-B
FL101
+30V
RELAY
+B
ANALOG
+7V
ANALOG
-7V
VIDEO
+5V
VIDEO
-5V
TUNER
+12V
+2.5V
Q723,724
+30V REG
-B SW
Q801
+3.3V
IC1051
+2.5V
3 1
REG
IC1011 PIN1
IC811
+7V
1 3
REG
IC812
-7V
3 2
REG
IC814
+5V
3 1
REG
IC815
-5V
3 2
REG
IC1061
+12V
3 1
REG
IC1041
+3.3V
3 1
REG
D805D804
D871
D872
T901
D875:E
240V
220V
120V
0V
FL1
FL2
F901
T902
D926
RY911
F904
F902
JW809
J911
AC
OUTLET
S901
VOLTAGE
SELECTOR
AC
IN
+B SW
D861-864
D851-854
S801
IMPEDANCE
SELECTOR
FRONT
D921-924
4Ω8Ω
D927
D925
Q911
RELAY
DRIVER
IC1031
+5V
3 1
REG
D801
+B
-B
Q912,913
IC103
REMOTE
CONTROL
RECEIVER
21
R-CH
R-CH
R-CH
2
IC1021
+3.3V
3 1
REG
TM501
L
R
TM601
SR
SL
C
J306
+5V (STBY)
RY701
Q701
RELAY
DRIVER
RY401
Q431
RELAY
DRIVER
RY501
Q531
RELAY
DRIVER
RY601
Q631
RELAY
DRIVER
RY681
Q681
RELAY
DRIVER
SIRCS OUT
C
Q1106
66
BUFFER
+3.3V (STBY)
(IC1101)
55
60
RESET
B
1
IC1111
RESET
1111
STR-DE875/DE975
3-4. SCHEMATIC DIAGRAM – DIGITAL SECTION (1/4) –
• See page 9 for Waveform. • See page 29 for IC Block Diagrams.
IC B/D
IC B/D
IC B/D
IC B/D
1313
STR-DE875/DE975
3-5. SCHEMATIC DIAGRAM – DIGITAL SECTION (2/4) –
IC B/D
• See page 9 for Waveform. • See page 30 for IC Block Diagrams.
1414
STR-DE875/DE975
3-6. SCHEMATIC DIAGRAM – DIGITAL SECTION (3/4) –
• See page 30 for IC Block Diagrams.
IC B/D
1515
STR-DE875/DE975
3-7. SCHEMATIC DIAGRAM – DIGITAL SECTION (4/4) –
• See page 9 for Waveform. • See page 33 for IC Pin Function.
4
SYSTEM CONTROLLER
1616
STR-DE875/DE975
3-9. SCHEMATIC DIAGRAM – MAIN SECTION (1/3) –
• See page 31 for IC Block Diagrams.
IC B/D
1818
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