STR-DE675 — Sony Audio Service Manual (repair manual)

Model
STR-DE675
Pages
45
Size
15.03 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
str-de675.pdf
Date

View Sony STR-DE675 Service Manual online

STR-DE675
US Model
Canadian Model
AEP Model
UK Model
E Model
Chinese Model
SERVICE MANUAL
FM STEREO FM-AM RECEIVER
— Continued on next page —
SPECIFICATIONS
Ver 1.2  2003. 05
Dolby Laboratories Licensing Corporation.
“DOLBY” the double-D symbol ;  “AC-3” and “PRO LOGIC”
are trademarks of Dolby Laboratories Licensing Corporation.
AUDIO POWER
SPECIFICATIONS
POWER OUTPUT AND
TOTAL HARMONIC
DISTORTION:
With 8 ohm loads, both
channels driven, from 20 -
20,000 Hz; rated 100
 
watts
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
(8 ohms 20 Hz - 20 kHz,
THD 0.09%)
100 W + 100 W
(8 ohms at 1 kHz, THD
0.7%)
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.
MULTI CH IN, CD,
MD/TAPE, DVD/
LD, TV/SAT,
VIDEO 1**,
VIDEO 2**, AUX:
10 Hz - 50 kHz +0.5/
–2 dB (with sound
field and equalizer
bypassed)
Frequency response
Reference Power Output
Rated Power Output at Stereo mode
US, Canadian MODELS
Reference Power Output
Rated Power Output at Stereo mode
AEP, UK MODEL :
(8 ohms 1 Hz, 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
Reference Power Output
Rated Power Output at Stereo mode
Chinese MODEL :
(8 ohms 1 Hz, THD 
     0.7%)
90 W + 90 W
(at 220 V AC, 50 Hz)
100 W + 100 W
(at 110 V AC, 50 Hz)
(8 ohms 1 kHz, THD 
10% at 230 V AC, 50 Hz)
Front : 100 W/ch
Center : 100 W
Surround : 100 W/ch
Reference Power Output
Rated Power Output at Stereo mode
Others :
(8 ohms 1 Hz, THD 0.7%) 
100 W + 100 W
(8 ohms 1 kHz, THD 10%) 
Front : 110 W/ch
Center : 110 W
Surround : 110 W/ch
Reference Power Output
Rated Power Output at Stereo mode
(8 ohms 1 Hz, THD 
     0.7%)
100 W + 100 W
(at 110 V AC, 50 Hz)
(8 ohms 1 kHz, THD 
10% at 110 V AC, 50 Hz)
Front : 100 W/ch
Center : 100 W
Surround : 100 W/ch
Photo : GOLD
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
9-873-845-13
2003E16-1
© 2003.05
2
STR-DE675
0.5 % (50 mV/m, 400 kHz)
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 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
Video: 1 Vp-p 75 ohms
S-video***:
Y: 1 Vp-p 75 ohms
C: 0.286 Vp-p 75 ohms
Video: 1 Vp-p 75 ohms
S-video***:
Y: 1 Vp-p 75 ohms
C: 0.286 Vp-p 75 ohms
General
Tuner section:
PLL quartz-locked digital 
synthesizer system
Preamplifier section:
Low-noise NF type equalizer
Power amplifier section:
Pure-complementary SEPP
FM tuner section
87.5 - 108.0 MHz
75 ohms, unbalanced
10.7 MHz
Mono: 18.3 dBf,
2.2 V/75 ohms
Stereo: 38.3 dBf
22.5 V/75 ohms
11.2 dBf, 1  V/75 ohms
Mono:  76 dB
Stereo:  70 dB
Mono:  0.3%
Stereo:  0.5%
45 dB at 1 kHz
30 Hz - 15 kHz +0.5/—2 dB
60 dB at 400 kHz
AM tuner section
With 10-kHz tuning
scale: 530 - 1710 kHz
c)
With 9-kHz tuning
scale: 531 - 1710 kHz
531 - 1602 kHz
c)
530 - 1610 kHz (10 kHz step)
c)
531 - 1602 kHz (9 kHz step)
c)
530 - 1610 kHz (10 kHz step)
531 - 1602 kHz (9 kHz step)
Loop antenna
450 kHz
50 dB/m (at 1,000 kHz or 999 kHz)
54 dB (at 50 mV/m)
120 V 
230 V AC, 50/60 Hz 
120/220/240 V AC, 50/60 Hz
110 V AC, 50/60 Hz
120 V AC, 60 Hz
AC, 60 Hz
220W
In standby condition: 1 W
315 VA
In standby condition: 1 W
210 W
In standby condition: 1 W
220 W
In standby condition: 1 W
230 W
In standby condition: 1 W
1 switched, total 100 W Max
1 switched, total 120 W/1A Max
430 
× 308.5 × 157.5 mm
(14.5 
× 10.4 × 5.3 in.)
including projecting
parts and controls
7.5 kg (16 lbs. 9 oz.)
Design and specifications are subject
to change without notice.
¥ FM wire antenna (1)
¥ AM loop antenna (1)
¥ R6 (size-AA) batteries (2)
¥ Remote commander 
RM-PP505 (remote) (1)
Tuning range
Antenna terminals
Intermediate frequency
Sensitivity
Usable sensitivity
S/N
Harmonic distortion at 1 kHz
Separation
Frequency response
Selectivity
Tuning range
US, Canadian MODELS :
Tuning range
Others :
Tuning range
AEP, UK MODELS :
Antenna
Intermediate frequency
Usable sensitivity
S/N
Harmonic distortion
Selectivity
Inputs
Outputs
System
Supplied accessories
Mass (Approx.)
Dimensions
AC outlets 
US, Canadian MODELS :
Power consumption
US MODEL :
Canadian MODEL :
AEP, UK MODELS :
Mexican MODEL :
E MODEL :
Others :
Power requirements
US, Canadian MODEL :
AEP, UK MODELS :
E MODEL :
Taiwan MODEL :
Mexican MODEL :
MULTI CH IN, CD,
DVD/LD, MD/
TAPE, TV/SAT,
VIDEO 1**,
VIDEO 2**, AUX: 
Sensitivity:  250 mV
Impedance:  50 kilohms
S/N
a)
:  96 dB (A, 250 mV
b)
)
a) Input short.
b) Weighted network, input level.
DVD/LD (coaxial):
Sensitivity:  —
Impedance:  75 ohms
S/N:  100 dB (A, 20 kHz LPF) 
(Optical):
Sensitivity:  —
Impedance:  —
S/N:  100 dB (A, 20 kHz LPF)
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
–6 dB
DVD/LD, TV/SAT,
MD/TAPE**
48 kHz (TV/SAT, MD/
TAPE OPTICAL IN)
96 kHz (DVD/LD
OPTICAL IN,
COAXIAL IN)
Sampling Frequency
EQ
Outputs
Inputs (Analog)
Inputs (Digital)
Ver 1.2  2003. 05
3
STR-DE675
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.
       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)
SAFETY  CHECK-OUT
To Exposed Metal 
Parts on Set
0.15 
µF
1.5 k
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 
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.
Ver 1.2  2003.05
PARTS No.
4-232-251-0s
4-232-251-1s
4-232-251-2s
4-232-251-3s
4-232-251-4s
4-232-251-6s
4-232-251-7s
4-232-251-8s
4-234-509-0s
4-234-509-1s
4-234-509-2s
MODEL
US model
Canadian model
E model
AEP model
UK model
Malaysia, Singapore model
Chinese model
Taiwan model
Korean model
Mexican model
Argentina model
4
STR-DE675
TABLE OF CONTENTS
1. GENETAL
··········································································· 5
2. TEST MODE
······································································ 7
3. DIAGRAMS
3-1.
Circuit Boards Location ..................................................... 9
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 (1/3) – .................. 13
3-5.
Schematic Diagram – Digital Section (2/3) – .................. 14
3-6.
Schematic Diagram – Digital Section (3/3) – .................. 15
3-7.
Printed Wiring Board – Main Section – ........................... 16
3-8.
Schematic Diagram – Main Section (1/3) – ..................... 17
3-9.
Schematic Diagram – Main Section (2/3) – ..................... 18
3-10. Schematic Diagram – Main Section (3/3) – ..................... 19
3-11. Printed Wiring Board – Display Section – ....................... 20
3-12. Schematic Diagram – Display Section – .......................... 21
3-13. Printed Wiring Board – Video Section – .......................... 22
3-14. Schematic Diagram – Video Section – ............................. 23
3-15. Schematic Diagram – Trans Section – ............................. 24
3-16. IC Block Diagrams ........................................................... 25
3-17. IC Pin Function Description ............................................. 27
4. EXPLODEO VIEWS
4-1.
Front Panel Section .......................................................... 29
4-2.
Chassis Section ................................................................. 30
5. ELECTRICAL PARTS LIST
······································· 32
Page of 45
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Here you can view online or download Sony STR-DE675 Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sony STR-DE675 Audio. Information contained in Sony STR-DE675 service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).