Sony STR-DE925 Service Manual
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Sony STR-DE925 Service Manual

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STR-DE925/V919
SERVICE MANUAL
Ver 1.1 2003. 06
Dolby Laboratories Licensing Corporation.
"DOLBY" the double-D symbol a "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
110 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
POWER OUTPUT
Stereo mode
(8 ohms 20 Hz - 20 kHz, THD 0.09%)
110 W + 110 W
Surround mode (8 ohms at 1 kHz, THD 0.8%)
Front: 110 W/ch
Center
a)
: 110 W
a)
Rear
: 110 W/ch
a) Depending on the sound field settings and the source, there may be no
sound output.
Dynamic power output
165 W + 165 W, 8 ohms
230 W + 230 W, 4 ohms
Harmonic distortion at rated output
Less than 0.09% (with sound field, tone, and bass
booster bypassed)
Frequency response
PHONO: RIAA
equalization curve
±0.5 dB
CD, TAPE, MD/DAT, TAPE/MD, DVD/LD, TV/DBS,
VIDEO 1, 2, and VIDEO 3 :
10 Hz - 50 kHz +0.5/-2 dB (with sound field, tone,
and bass booster bypassed)
9-922-896-12
Sony Corporation
2003F16-1
Home Audio Company
© 2003.06
Published by Sony Engineering Corporation
Photo : STR-DE925
SPECIFICATIONS
Inputs (Analog) PHONO:
CD, DVD/LD, TAPE, MD/DAT, TAPE/MD, TV/DBS,
VIDEO 1, 2, and VIDEO 3 :
b)78' IHF
c) Weighted network, input level
Inputs (Digital) DVD/LD (coaxial):
DVD/LD, TV/DBS, MD/DAT (Optical):
Outputs
TAPE, MD/DAT, TAPE/MD, (REC OUT); VIDEO 1, 2
(AUDIO OUT):
WOOFER:
PHONES:
FM STEREO FM-AM RECORDER
US Model
Canadian Model
PX Model
Chinese Model
Sensitivity: 2.5 mV
Impedance: 50 kilohms
b)
c)
S/N
: 75 dB (A, 2.5 mV
)
Sensitivity: 150 mV
Impedance: 50 kilohms
S/N
b)
: 82 dB (A, 150 mV
c)
)
Sensitivity: -
Impedance: 75 ohms
S/N: 100 dB (A, 20 kHz LPF)
Sensitivity: -
Impedance: -
S/N: 100 dB (A, 20 kHz LPF)
Voltage: 150 mV
Impedance: 10 kilohms
Voltage: 2 V
Impedance: 1 kilohms
Accepts low - and high-impedance headphones
— Continued on next page —
E Model
STR-DE925
STR-V919

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  • Page 1 VIDEO 1, 2, and VIDEO 3 : 10 Hz - 50 kHz +0.5/-2 dB (with sound field, tone, and bass booster bypassed) FM STEREO FM-AM RECORDER 9-922-896-12 Sony Corporation 2003F16-1 Home Audio Company © 2003.06 Published by Sony Engineering Corporation...

  • Page 2: Block Diagram - Main Section

    STR-DE925/V919 3-2. BLOCK DIAGRAM – MAIN SECTION – AUDIO SELECT IC301 TM301 SELECTOR TUNER UNIT ANTENNA IC303 J305 VOLUME L OUT AUDIO CODEC RY301 IC405 75Ω TV/DBS INPUT IC1103 RV401 VOL CONT IC304 IC1104 IC1104 IC1104 IC414 R OUT R CH...

  • Page 3: Block Diagram - Power Section

    STR-DE925/V919 3-3. BLOCK DIAGRAM – POWER SECTION – POWER AMP(L) R CH IC501 J701 PHONES 13 VCC RY602 BOOSTER RELAY Q506 DRIVE LIMITER Q601 Q504 • RCH is omitted LIMITER Q511 Q505 • Signal Path PROTECTOR Q509,510 BOOSTER CUR DET...

  • Page 4: Schematic Diagram - Amp Section

    STR-DE925/V919 3-5. SCHEMATIC DIAGRAM — AMP SECTION — , PX , PX , PX — 15 — — 16 —...

  • Page 5: Schematic Diagram - Video Section

    STR-DE925/V919 3-7. SCHEMATIC DIAGRAM — VIDEO SECTION — • See pages 61 for IC Block Diagrams. (Page31) (Page27) — 19 — — 20 —...

  • Page 6: Schematic Diagram - Audio Section

    STR-DE925/V919 3-9. SCHEMATIC DIAGRAM — AUDIO SECTION — (Page28) (Page28) (Page32) (V919) (DE925) (Page27) (V919) (DE925) (Page47) (Page27) — 24 — — 23 —...

  • Page 7: Schematic Diagram - Input Section

    STR-DE925/V919 3-11. SCHEMATIC DIAGRAM — INPUT SECTION — • See page 61 for IC Block Diagrams. (Page49) (Page23) (Page23) (Page23) (Page15) (Page35) (Page36) (Page16) (Page20) (Page24) — 27 — — 28 —...

  • Page 8: Schematic Diagram - Display Section

    STR-DE925/V919 3-13. SCHEMATIC DIAGRAM — DISPLAY SECTION — • See page 8 for Waveform. • See page 51 for IC Pin Function Description. • See page 61 for IC Block Diagrams. — 31 — — 32 —...

  • Page 9: Schematic Diagram - Speaker Section

    STR-DE925/V919 3-15. SCHEMATIC DIAGRAM — SPEAKER SECTION — (Page28) (Page15) (Page15) (Page28) (Page47) (Page16) (Page16) — 35 — — 36 —...

  • Page 10: Printed Wiring Board - Power Section

    STR-DE925/V919 3-16. PRINTED WIRING BOARD — POWER SECTION — • See page 7 for Circuit Boards Location. • Semiconductor Location Ref. No. Location US,CND,E,EA,CH,PX MODEL MY,SP MODEL D808 CNJ901 CNJ901 D901 AC OUTLET AC OUTLET D902 D903 REG BOARD D904...

  • Page 11: Schematic Diagram - Power Section

    STR-DE925/V919 3-17. SCHEMATIC DIAGRAM — POWER SECTION — • See page 61 for IC Block Diagrams. E, EA, PX MODEL EXCEPT E, EA, PX E, EA, PX MODEL MODEL (Page49) E, EA, PX MODEL , PX MODEL E, EA, PX MODEL...

  • Page 12: Schematic Diagram - Digital Section

    STR-DE925/V919 3-20. SCHEMATIC DIAGRAM — DIGITAL SECTION (1/3)— • • See page 51 for IC Pin Functions. See page 61 for IC Block Diagrams. (Page48) (Page49) (Page49) (Page47) — 45 — — 46 —...
  • Page 13 STR-DE925/V919 3-21. SCHEMATIC DIAGRAM — DIGITAL SECTION (2/3)— • • See page 51 for IC Pin Functions. See page 8 for Waveforms. (Page45) (Page46) (Page49) (Page32) (Page49) (Page24) (Page36) (Page31) (Page15) — 47 — — 48 —...
  • Page 14 STR-DE925/V919 3-22. SCHEMATIC DIAGRAM — DIGITAL SECTION (3/3)— • • • See page 51 for IC Pin Functions. See page 8 for Waveforms. See page 61 for IC Block Diagrams. (Page46) (Page46) (Page48) (Page39) (Page27) — 49 — — 50 —...

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