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Sony STR-SE581 Service Manual
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Sony STR-SE581 Service Manual

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SERVICE MANUAL
Manufactured under license from Dolby Laboratories
Licensing Corporation.
"Dolby" "Pro Logic" and the double-D symbol a are
trademarks of Dolby Laboratories Licensing
Corporation.
Audio power specifications
POWER OUTPUT AND TOTAL HARMONIC DISTORTION
With 8 Ω load, both channels driven, from 40 - 20,000 Hz, rated 100 watts per
channel minimum RMS power, with no more than 0.5% total harmonic distortion
from 250 milliwatts to rated output.
Amplifier section
(8 Ω at 40 Hz - 20 kHz less than 0.5% total
Stereo mode
harmonic distortion)
100 W + 100 W
(8 Ω at 1 kHz, THD 0.5%)
Surround mode
Front: 100 W/ch
Center: (Pro Logic Mode)
100 W
Rear: 50 W/ch
(8 Ω at 1 kHz, THD 0.8%)
5.1/DVD INPUT* mode
Front: 100 W/ch
Center: 100 W
Rear: 50 W/ch
Frequency response
PHONO: RIAA
equalization curve ±0.5 dB
TV/DBS, CD, TAPE/MD, VIDEO, 5.1/DVD
INPUT
10 Hz - 50 kHz ±1 dB
Inputs
Sensitivity Impedance
PHONO
2.5 mV
(MM)
CD
400 mV
TAPE/MD,
250 mV
TV/DBS,
VIDEO, 5.1/
DVD INPUT*
MICROFILM

SPECIFICATIONS

S/N (weighting network,
input level)
72 dB*
50 Kilohms
(A, 2.5 mV)
82 dB*
50 Kilohms
(A, 150 mV)
*78 IHF
STR-SE581
Outputs
Muting
BASS BOOST
TONE
FM tuner section
Tuning range
Antenna terminals
Sensitivity
Usable sensitivity
S/N
Harmonic distortion at 1 kHz
Separation
Frequency response
Selectivity
AM tuner section
Tuning range
Antenna
Usable sensitivity
S/N
FM STEREO/FM-AM RECEIVER
US Model
TAPE/MD REC OUT:
Voltage: 150 mV,
Impedance: 10 kΩ
VIDEO AUDIO OUT:
Voltage: 150 mV,
Impedance: 10 kΩ
WOOFER:
Voltage: 2 V,
Impedance: ± 10 kΩ
PHONES:
Accepts low and high impedance headphones
Full mute
+10 dB at 70 Hz
±8 dB at 100 Hz and 10 kHz
87.5 - 108.0 MHz
75 ohms, unbalanced
300 ohms, balanced
Mono: 18.3 dBf, 4.5 µV
Stereo: 38.3 dBf, 45 µV
11.2 dBf, 2 µV (IHF)
Mono: 76 dB
Stereo: 70 dB
Mono: 0.3%
Stereo: 0.59%
45 dB at 1 kHz
+0.5
30 Hz – 15 kHz
dB
–2
60 dB at 400 kHz
531 – 1710 kHz
Loop antenna
50 dB/m (at 1,000 kHz)
54 dB (at 50 mV/m)
— Continued on next page —

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  • Page 1: Specifications

    STR-SE581 SERVICE MANUAL US Model Manufactured under license from Dolby Laboratories Licensing Corporation. “Dolby” “Pro Logic” and the double-D symbol a are trademarks of Dolby Laboratories Licensing Corporation. SPECIFICATIONS Audio power specifications Outputs TAPE/MD REC OUT: Voltage: 150 mV, POWER OUTPUT AND TOTAL HARMONIC DISTORTION Impedance: 10 kΩ...

  • Page 2: Table Of Contents

    MARK ! ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE Earth Ground COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS Fig. A. Using an AC voltmeter to check AC leakage.
  • Page 3 SECTION 1 GENERAL LOCATION AND FUNCTION OF CONTROLS [FRONT PANEL] 2 #£ 3 4 5 !• !¶ !§ !¢ !£ #™ #¡ #º @• @§ @ª @¶ @∞ @¢ @£ @™ @¡ @º !ª !∞ !™ !¡ !º !• POWER switch (I/u) VIDEO FUNCTION button !ª...
  • Page 4 [REAR PANEL] 1 2 !¢ !∞ !™ 7 8 9 !§ !¡ !£ SIGNAL GND VIDEO 5.1/DVD INPUT (FRONT/REAR) SURROUND SPEAKERS (REAR) !¡ WOOFER FRONT SPEAKERS !™ ANTENNA (AM/FM) AC OUTLET !£ PHONO AC power code !¢ 5.1/DVD INPUT (CENTER) !∞...

  • Page 5: Test Mode

    SECTION 2 SECTION 3 TEST MODE DIAGRAMS INITIALIZATION MODE AM CHANNEL STEP 9 kHz/10 kHz 3-1. CIRCUIT BOARDS LOCATION All preset contents are cleared when this mode is activated. Use SELECTION MODE this mode before returning the product to clients upon SECONDARY BOARD Either the 9 kHz step or 10 kHz step can be selected for the AM completion of repair.

  • Page 6: Printed Wiring Board - Display Section

    STR-SE581 3-2. PRINTED WIRING BOARD — DISPLAY SECTION — MAIN BOARD CNS204 (Page 16) DISPLAY BOARD POWER (HALL) (C.STUDIO) (PRO LOGIC) CENTER LEVEL (5.1 INPUT) 1 80 IC201 (REMOTO SEUSOR) REAR LEVEL 40 41 VOLUME BOARD CNP202 PRESET TUNING (Page 11)

  • Page 7: Schematic Diagram - Display Section

    STR-SE581 3-3. SCHEMATIC DIAGRAM — DISPLAY SECTION — • See page 6 for Waveforms. • See page 25 for IC Pin Functions. — 9 — — 10 —...

  • Page 8: Printed Wiring Board - Volume/Video Section

    STR-SE581 3-4. PRINTED WIRING BOARD — VOLUME/VIDEO SECTION — • Semiconductor Location MAIN BOARD MAIN BOARD Ref. No. Location CNP503 CNP504 (Page 15) (Page 15) D238 D310 H-12 VOLUME BOARD IC404 IC500 C-11 IC502 C-12 SWITCH Q361 Q362 BOARD Q363...

  • Page 9: Schematic Diagram - Volume/Video Section

    STR-SE581 3-5. SCHEMATIC DIAGRAM — VOLUME/VIDEO SECTION — • See page 7 for KEY Board Printed Wiring Board. — 13 — — 14 —...

  • Page 10: Printed Wiring Board - Main Section

    STR-SE581 3-6. PRINTED WIRING BOARD — MAIN SECTION — • Semiconductor TM601 Location SURROUND SPEAKERS TM701 TAPE /MD VIDEO FRONT SPEAKERS REAR CENTER Ref. No. Location PHONO REC OUT TV/DBS AUDIO OUT AUDIO IN MAIN ANTENNA D311 BOARD D312 D560...

  • Page 11: Schematic Diagram - Main Section (1/3)

    STR-SE581 3-7. SCHEMATIC DIAGRAM — MAIN SECTION (1/3) — • See page 6 for Waveforms. • See page 27 for IC Block Diagrams. — 17 — — 18 —...

  • Page 12: Printed Wiring Board - Sp-Sw, Power Section

    STR-SE581 3-8. PRINTED WIRING BOARD — SP-SW, POWER SECTION — MAIN BOARD SECONDARY BOARD CN706 (Page 16) SP-SW BOARD PRIMARY BOARD T901 POWER TRANSFORMER S701 SPEAKERS MAIN BOARD CN801 (Page 16) MAIN BOARD CN706 1-665- (Page 16) 286- (12) 1-665-289-...

  • Page 13: Schematic Diagram - Main Section (2/3), Sp-Sw

    STR-SE581 3-9. SCHEMATIC DIAGRAM — MAIN SECTION (2/3), SP-SW — • See page 15 for MAIN Board Printed Wiring Board. • See page 27 for IC Block Diagrams. — 21 — — 22 —...

  • Page 14: Schematic Diagram - Main Section (3/3), Power

    STR-SE581 3-10. SCHEMATIC DIAGRAM — MAIN SECTION (3/3), POWER — • See page 15 for MAIN Board Printed Wiring Board. • See page 19 for SECONDARY/PRIMARY/STANDBY Board Printed Wiring Boards. • See page 27 for IC Block Diagrams. CN902 — 23 —...

  • Page 15: Ic Pin Function

    3-11. IC PIN FUNCTION DISPLAY BOARD IC201 : µPD78044FGF-064-3B9 (DISPLAY CONTROL) Pin No. Pin Name Description DIG7 DIG6 DIG5 DIG4 Fluorescent indicator tube drive. DIG3 DIG2 DIG1 — Power supply (+5V). S. CLK System clock. S. DATA System data. PLL. DATA PLL data input from TU001.
  • Page 16 Pin No. Pin Name Description VOLUME UP Volume up. VOLUME DOWN Volume down. STANDBY — Standby LED drive. SYS. POWER System power ON/OFF. RDS. DATA. IN RDS data input terminal (EXCEPT Australian, E, Saudi Arabia, PX model). RDS. CLK. IN RDS clock input terminal (EXCEPT Australian, E, Saudi Arabia, PX model).

  • Page 17: Ic Block Diagrams

    3-12. IC BLOCK DIAGRAMS IC300 LV1016 INV-PHASE ADM-CONT SRAM L+DELAY R+DELAY VOL/MUTE OUT-FILTER – DC-OUT IN-FILTER (7k/5k) (40kHz) L–R S-TRIM (–6dB) B-NR IC301 LA2786 — 27 —...
  • Page 18 IC401 LC7822 IC551 STK350-230 INPUT -VEOUT +VEOUT IN IN LEVEL SHIFT LATCH RESET SHIFT RESISTOR µPC2581V IC701 BIAS CIRCUIT PROTECTOR DRIVE DRIVE DRIVE DRIVE IC950 NJM2103D RESET – + VREF + – OUTC VSB/SESIN – – — 28 —...

  • Page 19: Exploded Views

    X-4949-644-1 FRONT PANEL ASSY 4-951-620-01 SCREW (2.6X8), +BVTP 4-989-843-01 BUTTON (P-T) * 14 A-4407-441-A VR-TONE BOARD, COMPLETE 4-921-941-01 CUSHION (FL) 3-008-600-11 EMBLEM (5-AR), SONY 4-943-107-11 HOLDER (FL TUBE) * 17 A-4407-442-A KEY BOARD, COMPLETE 4-980-658-01 CASE (413226) 4-977-358-11 CUSHION 3-710-901-11 SCREW, TAPPING...

  • Page 20: Chassis Section

    4-2. CHASSIS SECTION Transistor not supplied CNJ902 T901 not supplied not supplied not supplied not supplied Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks * 51 1-665-289-11 SP-SW BOARD 1-782-668-11 WIRE (FLAT TYPE) (11 CORE) 4-951-801-01 BUTTON (S) X-4947-208-1 FOOT ASSY (F50150S) 4-812-134-00 RIVET (DIA.

  • Page 21: Electrical Parts List

    SECTION 5 DISPLAY ELECTRICAL PARTS LIST Note: • -XX, -X mean standardized parts, so they may • COILS When indicating parts by reference number, have some difference from the original one. uH: µH please include the board name. • Items marked “*” are not stocked since they •...
  • Page 22 DISPLAY MAIN Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks S214 1-762-378-11 SWITCH, TACTILE (FM) S237 1-762-378-11 SWITCH, TACTILE (DIRECT) S215 1-762-378-11 SWITCH, TACTILE (AM) S238 1-762-378-11 SWITCH, TACTILE (MODE) S216 1-762-378-11 SWITCH, TACTILE (MEMORY) S239 1-762-378-11 SWITCH, TACTILE (CD) ************************************************************ <...
  • Page 23 MAIN Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks C351 1-126-962-11 ELECT 3.3uF C711 1-137-372-11 FILM 0.022uF C352 1-124-250-11 ELECT 0.15uF C720 1-162-286-31 CERAMIC 220PF C357 1-164-159-11 CERAMIC 0.1uF C721 1-126-934-11 ELECT 220uF C359 1-126-963-11 ELECT 4.7uF C722 1-126-964-11 ELECT...
  • Page 24 MAIN Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks D726 8-719-911-19 DIODE 1SS119 Q570 8-729-140-82 TRANSISTOR 2SA988-PAFAEA D727 8-719-911-19 DIODE 1SS119 Q610 8-729-119-78 TRANSISTOR 2SC403SP-51 D728 8-719-911-19 DIODE 1SS119 Q701 8-729-119-76 TRANSISTOR 2SA1175-HFE D801 8-719-986-54 DIODE HZS24-1LTA Q702 8-729-141-30 TRANSISTOR 2SC3623A-LK D802...
  • Page 25 MAIN Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks R447 1-249-416-11 CARBON 1/4W F R654 1-249-413-11 CARBON 1/4W F R448 1-249-429-11 CARBON 1/4W ! R660 1-249-393-11 CARBON 1/4W F R449 1-249-433-11 CARBON 1/4W R661 1-249-389-11 CARBON 1/4W F R450 1-249-400-11 CARBON...
  • Page 26 MAIN PRIMARY SECONDARY SP-SW STANDBY Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks ! R808 1-249-405-11 CARBON 1/4W F < HOLDER > ! R809 1-249-405-11 CARBON 1/4W F ! R815 1-247-739-11 CARBON 1/2W F FH801 1-533-233-21 HOLDER, FUSE R816 1-249-425-11 CARBON 4.7K...
  • Page 27 SWITCH VIDEO Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks A-4392-780-A SWITCH BOARD, COMPLETE R444 1-247-903-00 CARBON 1/4W R464 1-247-903-00 CARBON 1/4W *********************** R469 1-247-903-00 CARBON 1/4W < CAPACITOR > R476 1-249-429-11 CARBON 1/4W R477 1-249-439-11 CARBON 1/4W C425 1-126-795-11 ELECT...
  • Page 28 STR-SE581 VR-TONE Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks A-4407-441-A VR-TONE BOARD, COMPLETE R371 1-249-441-11 CARBON 100K 1/4W R421 1-249-430-11 CARBON 1/4W *********************** R422 1-249-422-11 CARBON 2.7K 1/4W F < CAPACITOR > R423 1-247-903-00 CARBON...

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