Sony STR-DE875 User manual

STR-DE875/DE975
US Model
Canadian Model
STR-DE875/DE975
AEP Model
UK Model
E Model
Chinese Model
Australian Model
STR-DE875
SERVICE MANUAL
FM STEREO FM-AM RECEIVER
9-873-911-11
2001E1600-1
© 2001.5
— Continued on next page —
SPECIFICATIONS
Ver 1.0 2001. 05
Dolby Laboratories Licensing Corporation.
“DOLBY” the double-D symbol ;“AC-3” and “PRO LOGIC”
are trademarks of Dolby Laboratories Licensing Corporation.
Photo : BLACK
Sony Corporation
Home Audio Company
Shinagawa Tec Service Manual Production Group
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
Rated Power Output at Stereo mode
(8 ohms 20 Hz - 20 kHz,
THD 0.09%)
STR-DE975:
110 W + 110W
STR-DE875:
100 W + 100W
Reference Power Output
(8 ohms at 1 kHz, THD
0.7%)
STR-DE975:
Front
1)
: 110 W/ch
Center
1)
: 110 W
Surround
1)
: 110 W/ch
STR-DE875:
Front
1)
: 100 W/ch
Center
1)
: 100 W
Surround
1)
: 100 W/ch 1) Depending on the sound field settings and
sources, there may be no sound output.
Frequency response
PHONO: RIAA
equalization curve
±0.5 dB
Inputs (Analog)
PHONO:
Sensitivity: 4.0 mV
Impedance:
50 kilohms
S/N
a)
: 86 dB
(A, 4.0 mV
b)
)
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
S/N
a)
: 96 dB(A, 250 mV
b)
)
a) Input short.
b) Weighted network, input level
US, Canadian MODELS
AEP, UK MODELS :
Rated Power Output at Stereo mode
(8 ohms 1 kHz, THD
0.7%)
100 W + 100 W
Reference Power Output
(8 ohms 1 kHz, THD
0.7%)
Front : 100 W/ch
Center : 100 W
Surround : 100 W/ch
Chinese MODEL :
Rated Power output at Stereo mode
(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)
Reference Power output
(8 ohms 1 kHz, THD
10% at 230 V AC, 50
Hz)
Front : 110 W/ch
Center : 110 W
Surround : 110 W/ch
Rated Power Output at Stereo Mode
(8 ohms 1 kHz, THD
100 W + 100W
Reference Power Output
(8 ohms 1 kHz, THD
FRONT : 110 W/ch
CENTER : 110 W
SURROUND : 110 W/ch
0.7 %)
10 %)
Others :
AEP, UK MODELS :
Others :
Frequency response
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)
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)

2
STR-DE875/DE975
Harmonic distortion
0.5 % (50 mV/m,
400 Hz)
Selectivity
At 9 kHz: 35 dB
At 10 kHz: 40 dB
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.
Video section
Inputs Video: 1 Vp-p 75 ohms
S-video:
Y: 1 Vp-p 75 ohms
C: 0.286 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
General
System Tuner section:
PLL quartz-locked
digital synthesizer
system
Preamplifier section:
Low-noise NF type
equalizer
Power amplifier
section:
Pure-complementary
SEPP
Power requirements
120 V AC, 60 Hz
Power consumption
US MODEL :
STR-DE975: 270 W
In standby condition:
0.9 W
STR-DE875: 260 W
In standby condition:
0.9 W
Canadian MODEL :
Others :
STR-DE975: 350 VA
In standby condition:
0.9 W
STR-DE875: 340 VA
In standby condition:
0.9 W
AC outlets 2 switched, total
120 W/1A Max
Dimensions 430 ×157.5 ×369 mm
(17 ×6 1/8 ×14 4/8 in.)
including projecting
parts and controls
Mass (Approx.)
9.5 kg (20 lbs. 16 oz.)
Supplied accessories
Design and specifications are subject
to change without notice.
FM tuner section
Tuning range87.5 - 108.0 MH
Antenna terminals
75 ohms, unbalanced
Intermediate frequency
10.7 MHz
Sensitivity Mono: 18.3 dBf,
2.2 µV/75 ohms
Stereo: 38.3 dBf
22.5 µV/75 ohms
Usable sensitivity
11.2 dBf, 1 µV/75 ohms
S/N Mono: 76 dB
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
With 10-kHz tuning scale:
530 - 1710 kHz c)
With 9-kHz tuning scale:
531 - 1710 kHzc)
Antenna Loop antenna
Intermediate frequency
450 kHz
Usable sensitivity
50 dB/m (at 1,000 kHz
or 999 kHz)
50 dB/m (at 999 kHz)
S/N 54 dB (at 50 mV/m)
•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,
•Remote commander RM-PP505 (remote) (1)
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:
±10 dB, 1dB step
Sampling Frequency
48 kHz (TV/SAT,
MD/DAT*,
MD/TAPE**
OPTICAL IN)
96 kHz (DVD/LD
OPTICAL IN,
COAXIAL IN)
* STR-DE975 only
** STR-DE875 only
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
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)
Singapore, Chinese, Australian model only
•STR-DE875 : AEP, UK model only
•Commander, standard RM-U305A (remote)
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.
AEP, UK MODELS :
531 - 1602 kHz
E MODEL :
530 - 1610 kHz (10 kHz
step)d)
531 - 1602 kHz (9 kHz
step)d)
Others :
531 - 1602 kHz (9 kHz
step)
US, Canadian MODELS :
AEP, UK MODELS :
Others :
AEP, UK MODELS :
35 dB
Others :
US, Canadian MODELS :
AEP, UK MODELS :
E MODEL :
230 V AC, 50/60 Hz
120/220/240 V AC, 50/60 Hz
Australian MODEL :
240 V AC, 50 Hz
Others :
220-230 V AC, 50/60 Hz
220 W
In standby condition:
0.9 W
US, Canadian MODELS :
AEP, UK MODELS :
1 switched, max 100 W
E, Chinese MODELS :
Others :
2 switched, total 100 W max
1 switched, total 100 W max

3
STR-DE875/DE975
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0OR DOTTED LINEWITH
MARK 0ON 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.
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 forAC 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-operatedAC 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 µF1.5 kΩ
AC
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 0SUR 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.
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
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

5
STR-DE875/DE975
SECTION 1
GENERAL This section is extracted
from instruction manual.
? / 1
DISPLAY
DIMMER
ON SCREEN
MEMORY SHIFT FM MODE FM AM
PRESET
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
AA
MODE 2CH
PHONES
VIDEO 3 INPUT
VIDEO L AUDIO R
SPEAKERS
EQ
SURR
LEVEL
SET UP
NAME
ENTER
BBC
MASTER VOLUME
+
–
0
123 4 5 8
6
7qa 9
v
1?/1switch
Press to turn the receiver on and off.
2DISPLAY button
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.
** Frequency appears only when the tuner is selected.
3DIMMER 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.
4
The following buttons operate the built-in tuner. For
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.
5MULTI CHANNEL DECODING indicator
This indicator lights up when the unit is decoding
signals recorded in a multi channel format.
6Use 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).
7Use 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.
8MASTER VOLUME control
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
A:XXX Any audio source to enjoy with
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
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.
OPTICAL FIXED Specify the digital audio signals
input to the DIGITAL OPTICAL
input jacks.
ANALOG 2CH FIXED Specify the analog audio signals
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
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.
92ND 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.
0FUNCTION control
Rotate to select the component you want to use.
Toselect 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.
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
tV:XXX tA:XXX
selected componentT

6
STR-DE875/DE975
? / 1
DISPLAY
DIMMER
ON SCREEN
MEMORY SHIFT FM MODE FM AM
PRESET
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
AA
MODE 2CH
PHONES
VIDEO 3 INPUT
VIDEO L AUDIO R
SPEAKERS
EQ
SURR
LEVEL
SET UP
NAME
ENTER
BBC
MASTER VOLUME
+
–
w; qh
qk
ql qj
qf
qd
qs
wh
wa
wg wf wswd qg
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 HALLA 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
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.
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.

7
STR-DE875/DE975
SECTION 2
TEST MODE
FACTORY PRESET MODE
* All preset contents are reset to the default setting.
* Procedure:
While depressing the SET UP and the DIMMER buttons simul-
taneously, press the power ?/1 button to turn on the main power.
The message “TUNER FACTORY PRESET”appears and the
present contents are reset to the default values.
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.
?/1 button to turn on the main power. Either the message 9 k
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 simul-
taneously, press the power ?/1 button to turn on the main 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.
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.
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 ?/1 button to turn on the main power. The message
“S.F Initialize”appears and initialization is performed.
DEMONSTRATION MODE
* Demonstration is performed.
* Procedure :
While depressing the SET UP button, press the power ?/1
button. The message appears and demonstration is performed.
* To finish DEMONSTRATION MODE, press the power ?/1
button while the introduction message appears in the display.
VERSION DISPLAY MODE
* The version is displayed.
* Procedure:
While depressing the MUTING and the DIMMER buttons
simultaneously, press the power ?/1 button to turn on the main
power. The massage “VERSION”and the version number are
displayed.
KEY CHECK MODE
* Button check
* Procedure:
While depressing the LEVEL and the DISPLAY buttons
simultaneously, press the power ?/1 button to turn on the main
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.
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.

8
STR-DE875/DE975
SECTION 3
DIAGRAMS
3-1. CIRCUIT BOARDS LOCATION
VIDEO board
VIDEO 3 board
(DE975)
DIGITAL board
MAIN board
JOG board
DISPLAY board
HEADPHONE board
POWER SWITCH board
STANDBY board
SPEAKER board
S-VIDEO board
2 ND-AUDIO board
(DE975)
AC SELECT board

99
STR-DE875/DE975
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 Ωand 1/4W or less unless otherwise
specified.
• % : indicates tolerance.
•f: internal component.
•2: nonflammable resistor.
•1: fusible resistor.
•C: panel designation.
•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 aVOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion 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
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this necessary note is printed in each
block.)
Note:
The components identified by
mark 0or dotted line with mark
0are critical for safety.
Replace only with part number
specified.
Note:
Les composants identifiés par
une marque 0sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce portant le numéro spécifié.
C
B
These are omitted.
E
Q
B
These are omitted.
CE
For printed wiring boards.
Note:
•X: parts extracted from the component side.
•a: Through hole.
•f: internal component.
•: Pattern from the side which enables seeing.
1IC252 8(EXS)
5.5Vp-p
69.90ns
• Waveform
VIDEO Board DIGITAL Board
2IC1306 7(IY)
4.0Vp-p
40.69ns
3IC1501 qs (MCLK2)
4.0Vp-p
74.17ns
4IC1101 tj (XI)
3.8Vp-p
60.44ns
Caution:
Pattern face side: Partson 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.

1010
STR-DE875/DE975
3-2. BLOCK DIAGRAMS –MAIN SECTION –
IC253
VIDEO DRIVER
•Signal Path
•R-CH is omitted due to same as L-CH.
: FM
: CD/SACD
: DVD/LD (DIGITAL)
(ANALOG)
AUDIO IN
AUDIO IN
AUDIO IN
MULTI
CH IN
FRONT
SURROUND
CENTER
SUB WOOFER
J307
PROCESSOR
IC303
L IN9
2
L REC3
67
L REC4
4
L IN7
71
L IN6
70
L REC1
61
L REC2
66
L IN1
62
51
L OUT
L IN4
68
47
SL OUT
39
C OUT
35
SW OUT
MUTING
Q401
DATA
20
CLOCK
21
LATCH
22
MUTING
Q501
MUTING
Q601
MUTING
Q651
SWITCH
Q1105
VOL_IC.CLK
VOL_IC.LAT
VOL_IC.DATA
SYSTEM CONTROLLER
IC1101(2/3)
DVD/LD
IN
J1301
IC1351
3562
DIGITAL AUDIO
I/F RECEIVER
IC1301
L
DIN2
5
DIN0
3
DO
35
DI
36
CLK
38
CE
37
ERROR
34
XSTATE
17
XMODE
48
13
CK OUT
14
2
1
6
5
BCK
20
XMCK
15
LRCK
16
DATAO
IC1303
X1301
24.576MHz
12.288MHz
AUDIO DSP2
IC1551
KFSI0
62
SDI2
SDI3
SDI1
28
SDI4
39
HCLK
75
HCS
76
HACN
83
PM
140
BST
141
XRST
168
60
SDO1
61
SDO2
25
SDO3
BCKI1
38
LRCKI1
29
IC1552
SRAM
DAC
IC1451
SCKI
38
MDO
33
MDI
34
MC
35
ML
36
RST
PCM1604.MDO
PCM1604.MDI
PCM1604.MC
PCM1604.ML
PCM1604.RST
37
14
VOUT1
BCK
40
LRCK
41
DATA1
45
DATA2
46
DATA3
47
12
VOUT3
10
VOUT5
9
VOUT6
SELECTOR
IC302
TUNER
10
TUNER
4
DATA
15
CLK
14
LAT
16
2ND
12
VISUAL
7
CD
CD
11
3
TAPE
TAPE
8
6
MD/DAT
MD/DAT
9
52
OUTPUT
67
IC1403
31
IC1402
3
3
1
1
IC301
EQ AMP
IC761
67
IC1404
67
IC1405(1/2)
21
IC1405(2/2)
ANALOG SOUND
L IN2
63
L IN3
64
AL IN
11
SL
13
16
15
AL OUT
10
DL IN
27
29
31
32
ASL IN
ASW IN
AC IN
SL
C
SW
DSL IN
DC IN
DSW IN
A
D
70 69 46 67 71 73 45 72
D.DO
DI
1 2
2ND_RY
2ND_LAT
2ND_RY
2ND_LAT
2ND_RY
2ND_LAT 2ND_LAT
2ND_CLK
2ND_DATA
DIR CLK
DIR CE
ERROR
XSTATE
DIR CKSEL1
DATA0
88
PCM1800.RST
79
9616.HCS2
78
9616.HACN2
76
9616.PM2
75
D2.BST2
74
D2.XRST2
93108
PLL2
DSP2.EXLOCK
50 92 91 90 89
ANA/DIG
MUTING
CONT
Q1103,1104
SYSTEM_MUTE
MUTING
SWITCH
Q771
54MD0
53
MD1
52
MD2
109
SOT1
110
SIN1
MD0
VDD
MD2
FLASH 1
FLASH 2
RESET
+3.3V
CNP503
B
J306
J301
J302
J303
J304
J305
MD/DAT
CD/SACD
DVD/LD
TV/SAT
AUDIO OUT
IC1352
TV/SAT
IN DIN1
4
IC1353
MD/DAT
IN
IC1354
MD/DAT
OUT DOUT
2
DVD/LD
IN 5
6
7
IC1302
SELECTOR
1 5
IC1305
DIVIDER
14
TC74HC153_A
22 XIN
43
DIR XMODE
CKSEL1
47
GP3
120
HD OUT
82
HD IN
74
49
DSP2.GP3
104
HDOUT2
144
MCLK1
139
MCLK2
X1551
13.5MHz
10
SCK OUT
64
BCKO
63LRCKO
132GP0
111GP7
24AUDIO GP1
131
EXLOCK PLOCK
136
AUDIO DSP1
IC1501
IC1304
KFSI0
22
SDI2
30
HCLK
34
HCS
36
HACN
32
PM
113
BST
56
XRST
72
23
SDO1
24
SDO2
25
27
35
SDO3
26
SDO4
BCKI2
29
BCKI1
17
LRCKI2
28
LRCKI1
15
IC1502
SRAM
9616.HCLK2
9617.HCS
9617.HACN
85
9617.PM
81
9617.BST
84
9617.XRST
48
DSP1.PLL1
GP9
68
HD OUT
35
HD IN
33
80
9617.GP9
115
FREQ SEL
DSP1.HD OUT
HDIN2
9
MCLK1
12
MCLK2
X1501
13.59MHz
20
BCKO1
19LRCKO
67GP10
18 SDI1
GP8
69
EXLOCK PLOCK
59
FLASH
PROGRAMMING
42
TUNER UNIT
FM
AM
R-CH
DATA
DO
CLOCK
CE
STEREO
TUNED
MUTING
FM
AM
DET OUT
R OUT
L OUT
2
4
14
16
13
X1201
4.33MHz
X251
L251
14.31818MHz
RDS
IC1201
DE875:AEP,UK
SYSTEM CONTROLLER
IC1101(1/3)
TUNER_DO
28
J252
TV
3
LD
5
V2.OUT
11
14
SW1
J251
M.OUT
1
VIDEO SWITCH
IC251
VIDEO OUT
VIDEO OUT
VIDEO 1
MONITOR
MONITOR
J140(2/2)
V3
7
VIDEO IN
VIDEO 3
J253
V2.IN
9
V1.OUT
15
V1.IN
13
DVD/LD
VIDEO 1
VIDEO 1
VIDEO 1
VIDEO 1
CTRL A1 II
VIDEO IN
VIDEO IN
VIDEO IN
S VIDEO IN
S VIDEO IN
S VIDEO IN
TV/SAT
64
5
10
SW2 31
2
4
SW3
23
SIN
IC252
ON-SCREEN DISPLAY
CONTROLLER
XS
9
EXS
8
XD
16
EXD
15
22
SCLK
2
CS
3
VIN
1
YIN
2
25
27
26 CIN
VOUT
YOUT
COUT
7
8
6
VOUT
YOUT
COUT
3
VIN
2
YIN
1
CIN
4
SW3
11 13
12
6
SW4
6
SW4
810
9
2
SW5
2
SW5
TV/SAT
TV/SAT
DVD/LD
DVD/LD
J202
J203(1/2)
Y
C
Y
C
Y
C
V1.IN
13
Y SWITCH
IC201
15V1.OUT
LD
5
TV
3
V1.IN
13
LD
5
TV
3
14
SW1
10
SW2
1
M.OUT
4
SW3
6
SW4
2
SW5
15V1.OUT
14
SW1
10
SW2
1
M.OUT
C SWITCH
IC202
S VIDEO OUT
S VIDEO OUT
MONITOR
J203(2/2)
J201
Y
C
Y
C
T.DATA
30
TUNER_SERIAL.CLK
29
T.LAT
31
FM IFOUT RDS_SIGNAL
139
STEREO
23
TUNER_AUTO_STOP
24
TUNER_MUTE
25
RDS DATA
32
RDS CLK
61
A1 IN
86
MBUS_VIDEO
65
MBUS_DVD
64
MBUS_STATUS_OUT
51
MBUS_TV
63
A1 OUT
87
V.SW1
V.SW2
V.SW3
V.SW4
33
34
35
36
BUFFER
Q1102
BUFFER
Q201,202
BUFFER
Q1101
J204
CTRL S OUT
J205
CTRL S OUT
J206
CTRL S STATUS IN
J207
CTRL S IN
J208
VIDEO OUT
VIDEO 2
VIDEO IN
OUT
PHONO IN
IN
IN
OUT
AUDIO IN
AUDIO IN
AUDIO OUT
VIDEO 2
TAPE
OUT
IN
COAXIAL
OPTICAL
DIGITAL
ANTENNA
+5V
32
1
11 12
13
89
10
OSD DATA
OSD CLK
OSD LAT
106
105
107
+5V
11
10
13
O2-1
O2-2
IN1
6
O3-1
7
O3-2
4
IN3
2
OUT1
DE975
DE975
DE975/DE875:US,CND
Q203
CRAMP
Q204
CRAMP
IC203
REMOTE CONTROL I/F
1
14
16
LIN
BCK
13 LRCK
SYSCLK
6RSTB
15
DOUT
IC1401
ADC
J761
J140(1/2)
VIDEO 3
2ND ROOM
DE975
DE975
C
SIRCS OUT
17
35
62
IC1306
IC1171
IC1141
82 83 103 102
47 116 117 118 121 120
RELAY
DRIVER
Q781 RY761
OPTICAL
INPUT
OPTICAL
INPUT
OPTICAL
INPUT
OPTICAL
OUTPUT

1111
STR-DE875/DE975
–DISPLAY/POWER SECTION –
•Signal Path
•R-CH is omitted due to same as L-CH
: FM
: CD/SACD
: DVD/LD (DIGITAL)
RESET
IN2
8
12
+V OUT2
POWER AMP
IC551
9
NF2
LIMITER
Q421
11
-V OUT2
LIMITER
Q422
BOOSTER
Q423
BOOSTER
Q424 CURRENT
DETECT
Q425,426
AF POWER
PROTECT
Q427
IN1
6
2+V OUT1
5
NF1
LIMITER
Q521
3
-V OUT1
LIMITER
Q522
BOOSTER
Q523
BOOSTER
Q524 CURRENT
DETECT
Q525,526
IN+
1
6
+V OUT
POWER AMP
IC601
2
IN-
LIMITER
Q621
5-V OUT
LIMITER
Q622
BOOSTER
Q623
BOOSTER
Q624 CURRENT
DETECT
Q625,626
D752
PROTECT
SWITCH
Q751-753
RELAY
DRIVER
Q701 RY701
RELAY
DRIVER
Q431 RY401
D432
RELAY
DRIVER
Q531 RY501
D532
RELAY
DRIVER
Q631 RY601
D632
3 1
RELAY
DRIVER
Q681 RY681
L
R
SR
SL
C
R-CH
R-CH
R-CH PHONES
TM601
TM501
AUDIO
OUT
J306
20
PROTECTOR
15
HP_RY
16
SP_A_RY
18
REAR_RY
17
CENTER_RY
19
WOOFER_RY
RV102
ENCODER
3 1
FUNCTION_JOG_1B
11
FUNCTION_JOG_1A
10
RV101
ENCODER
3 1
VOL_JOG_2B
12
VOL_JOG_2A
13
PW_ON/OFF
62
S161
SPK_SEL
14
S151
55
RSTX
60
VOLT_DETEC_STOP
66
SIRCS REMOTE
CONTROL
RECEIVER 2
1
IC103
+5V
REG
D921-924
AC
IN
T902
RY911
D926
D927
D925
RELAY
DRIVER
Q911
Q921
VOLTAGE
DET
D861-864
-5V
REG
3 2
+5V
REG
3 1
-7V
REG
3 2
+7V
REG
1 3
ANALOG
+7V
VIDEO
+5V
VIDEO
-5V
IC811
IC812
IC814
IC815
PW_RY
22
SUB-T
41
RELAY
+B
D851-854
240V
220V
120V
0V
VOLTAGE
SELECTOR
D875:E
S901
58 57
X0
X1
X1101
16.5MHz
FL1
FL2
L
SLSL
C
SW
A
MUTING
1
POWER
MUTING
Q721,722
119
AC MUTE
J701
FLUORESCENT
INDICATOR TUBE
FL101
112
FL DIN/F1
111
FL CLK
113
FL LAT/F2
114
FL DRV.CLR
28
DIN
30
CLK
31
LAT
32
CL
223
G1-22
1,70 37
P1-35
16
DATA
17
CLK
18
STB
19
CLR
22 1
FL1 FL2
4
2ND_DATA
3
2ND_CLK
6
LED_DRV_CE
FUNCTION
KEY
AD1
132
S111-117S101-107
FUNCTION
KEY
AD2
133
FUNCTION
KEY
AD3
134
S121-127
S118
FUNCTION
KEY
AD4
135
S131-136
FUNCTION
KEY
AD5
136
S141-146
B
C
D
RESET
SYSTEM CONTROLLER
IC1101(3/3)
AF POWER
PROTECT
Q527
AF POWER
PROTECT
Q627
21
FRONT
SURROUND
CENTER
57
21
HP_CTRL
D101-117
5
LED_DRV_CL
DE975
S147
DE975
RV103
ENCODER
3 1
CURSOR_JOG_3B
8
CURSOR_JOG_3A
7
BUFFER
Q1106
+3.3V
REG
3 1
21
IC1021
ANALOG
-7V
D871
D872
+12V
REG
3 1
3 1
TUNER
+12V
IC1061
T901
+3.3V REG
Q821
+3.3V
REG
3 1
IC1071
TUNER
+3.3V
+3.3V
(IC303)
F901
JW809
F902
AC
OUTLET
J911
F904
D801 4Ω8Ω
IMPEDANCE
SELECTOR
S801
D805D804
+B
-B
-B SW
Q723,724
+30V REG
Q801
+B SW
Q912,913
FL101
+30V
POWER AMP
-B
+5V
REG
3 1
IC1031
+2.5V
REG
3 1
IC1051
+2.5V
IC1011 PIN1
+3.3V
REG
3 1
IC1041
+3.3V
+5V
REG
3 1
IC1001
ANALOG
+5V
+5V (STBY)
SPEAKERS
SUB
WOOFER
IC1011
IC1111
+3.3V (STBY)
(IC1101)
SIRCS OUT
33
12 12
66
45 45
88
99 10 10
11 11
12 12 13 13
+5V (STBY)
30 ,10,9, 7
IC101
FL DRIVER
IC102
LED DRIVER
5
SDA
6
99 100
SCL
EEPROM.SDA
EEPROM.SCL
IC1131
EEPROM
(CURSOR) FUNCTION MASTER VOLUME
SPEAKERS
2ND_DATA
2ND_CLK
IC305
IC304
IC1151IC1161
FRONT

1212
STR-DE875/DE975
3-3. PRINTED WIRING BOARD –DIGITAL SECTION –•See page 8 for Circuit Boards Location.
IC1051
IC1303
IC1354 IC1353 IC1352 IC1351
IC1171
IC1302
IC1301
IC1305
IC1306
IC1401
IC1402
IC1501
IC1551
IC1552
IC1403
IC1404
IC1405
IC1451
IC1001
IC1141
IC1131
IC1101
IC1011
IC1021
IC1061
IC1041
IC1031
IC1151
IC1161
IC1201
IC1071
IC1502
IC1304
IC1111
R1071
R1072
R1577R1578
R1579
R1576
R1514
R1553
R1320
R1360 R1321
R1082
CNP101
1CNP105
1
CN 805
(PAGE 17)
CNP814
(PAGE 27)
FM
75Ω
COAXIAL
AM
CNS201
(PAGE 23)
CNP810
(PAGE 17)
CNP808
(PAGE 17)
13131313
Ref.No. Location
D1001 F-10
D1102 E-7
D1103 F-7
D1105 F-6
D1301 B-7
D1302 A-7
IC1001 E-7
IC1011 G-10
IC1021 G-9
IC1031 G-10
IC1041 G-10
IC1051 F-2
IC1061 G-10
IC1071 D-10
IC1101 F-7
IC1111 F-8
IC1131 E-7
IC1141 E-7
IC1151 G-7
IC1161 G-6
IC1171 A-10
IC1201 D-10
IC1301 B-9
IC1302 B-10
IC1303 A-7
IC1304 A-9
IC1305 B-9
IC1306 B-8
IC1351 A-10
IC1352 A-9
IC1353 A-9
IC1354 A-8
IC1401 B-7
IC1402 C-7
IC1403 C-7
IC1404 D-7
IC1405 D-7
IC1451 C-7
IC1501 C-8
IC1502 C-9
IC1551 D-8
IC1552 D-9
Q1101 G-8
Q1102 E-8
Q1103 F-6
Q1104 F-6
Q1105 F-6
Q1106 E-8
•Semiconductor
Location

1313
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

1414
STR-DE875/DE975
3-5. SCHEMATIC DIAGRAM –DIGITAL SECTION (2/4) –•See page 9 for Waveform. •See page 30 for IC Block Diagrams.
IC B/D

1515
STR-DE875/DE975
3-6. SCHEMATIC DIAGRAM –DIGITAL SECTION (3/4) –•See page 30 for IC Block Diagrams.
IC B/D

1616
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

1717
STR-DE875/DE975
3-8. PRINTED WIRING BOARD –MAIN SECTION –•See page 8 for Circuit Boards Location.
Ref. No. Location
•Semiconductor Location
Ref. No. Location
D425 G-3
D426 G-3
D431 G-9
D432 F-11
D475 H-9
D476 H-10
D525 G-7
D526 G-7
D531 G-10
D532 F-11
D575 G-12
D576 G-11
D625 H-2
D626 H-1
D631 G-10
D632 F-11
D681 C-10
D701 F-8
D751 G-12
D752 H-12
Ref. No. Location Ref. No. Location
D753 G-12
D801 C-13
D802 C-11
D803 C-12
D804 C-11
D805 B-11
D811 D-9
IC301 C-3
IC302 C-5
IC303 E-4
IC304 F-3
IC305 D-9
IC501 F-6
IC551 G-5
IC601 G-2
IC811 C-9
IC812 D-9
IC814 F-13
IC815 E-13
Q391 E-2
Q401 F-5
Q421 H-5
Q422 H-5
Q423 H-4
Q424 H-5
Q425 H-5
Q426 H-4
Q427 G-3
Q431 G-13
Q451 F-6
Q471 H-8
Q472 H-9
Q473 H-8
Q474 H-9
Q475 H-9
Q476 H-9
Q477 G-10
Q501 F-5
Q521 H-7
Ref. No. Location
Q522 H-7
Q523 H-6
Q524 H-7
Q525 H-7
Q526 H-6
Q527 G-6
Q531 G-13
Q551 F-7
Q571 H-10
Q572 H-10
Q573 H-10
Q574 H-11
Q575 H-11
Q576 H-11
Q577 G-11
Q601 F-2
Q621 H-3
Q622 H-3
Q623 H-2
Q624 H-3
Q625 H-3
Q626 H-2
Q627 H-1
Q631 G-13
Q651 F-2
Q681 G-12
Q701 G-13
Q721 G-4
Q722 G-3
Q723 D-9
Q724 E-7
Q751 G-11
Q752 H-12
Q753 G-12
Q771 F-2
Q801 C-10
Q821 E-2
IC301
IC302
IC812
IC305
IC811
IC815
IC814
IC601 IC551
IC501
IC304
IC303
7
7
CNP813
(PAGE 27)
CNP817
(PAGE 25)
CNP254
(PAGE 23)
CNP507
(PAGE 12)
CNS501
(PAGE 12)
CN816
(PAGE 25)
CNP104
(PAGE 25)
CNS502
(PAGE 12)

1818
STR-DE875/DE975
3-9. SCHEMATIC DIAGRAM –MAIN SECTION (1/3) –•See page 31 for IC Block Diagrams.
IC B/D

1919
STR-DE875/DE975
3-10. SCHEMATIC DIAGRAM –MAIN SECTION (2/3) –
IC B/D
IC B/D
IC B/D
•See page 31 for IC Block Diagrams.

2020
STR-DE875/DE975
3-11. SCHEMATIC DIAGRAM –MAIN SECTION (3/3) –