Table of Contents
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SERVICE MANUAL
• This set is the amplifier
section in SEN-T581.
Manufactured under license from Dolby Laboratories
Licensing Corporation.
"DOLBY" and the double-D symbol a and "Pro
Logic" are trademarks of Dolby Laboratories
Licensing Corporation.
Amplifier section
European models:
(FRONT)
DIN power output
100 W + 100 W (at rear/center/
woofer off at 1 kHz, 8 Ω)
Continuous RMS power output
120 W + 120 W (at rear/center/
woofer off at 1 kHz, 10%
T.H.D., 8 Ω)
80 W/ch (at SURROUND ON
at 1 kHz, 10% T.H.D., 8 Ω)
(REAR)
50 W (at front/center/woofer
off at 1 kHz, 8 Ω)
(CENTER)
50 W (at front/rear/woofer off
at 1 kHz, 8 Ω)
(WOOFER)
80 W (at front/rear/center off
at 40 Hz, 4 Ω)
Other models:
Peak music power output
1900 W (total)
(FRONT)
Continuous RMS power output
100 W + 100 W (at rear/center/
woofer off at 1 kHz, 10%
T.H.D., 8 Ω)
MICROFILM
TA-AV581
SPECIFICATIONS
(REAR)
50 W (at front/center/woofer
off at 1 kHz, 8 Ω)
(CENTER)
50 W (at front/rear/woofer off
at 1 kHz, 8Ω)
(WOOFER)
80 W (at front/rear/center off at
40 Hz, 4 Ω)
Inputs
PHONO (phono jacks):
sensitivity 2.5 mV,
impedance 50 kΩ
CD (phono jacks):
sensitivity 400 mV,
impedance 50 kΩ
TUNER, TAPE, VIDEO1,2 (phono jacks):
sensitivity 250 mV,
impedance 50 kΩ
Outputs
TAPE REC OUT, VIDEO 1 (phono jacks):
voltage 250 mV,
impedance 1 kΩ
PHONES (stereo phone jack):
accepts low and high
impedance headphones
TONE
± 10dB at 100 Hz and 10 kHz
Australian Model
General
Power requirements
European, Australian and Singaporean models:
230 V AC, 50/60 Hz
Other models:
110-120 V AC or
220-240 V AC, 50/60 Hz
Power consumption
180 W
AC outlets
3 switched, total 100 W max.
Dimensions (w/h/d)
Approx. 430 × 160 × 355 mm
Mass
Approx. 8.5 kg
Supplied accessories
Remote RM-U581 (1)
Sony SUM-3 (NS) batteries (2)
Design and specifications are subject to change
without notice.
INTEGRATED AV AMPLIFIER
AEP Model
E Model
(adjustable with the voltage
selector)
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Table of Contents
Related Manuals for Sony TA-AV581
Summary of Contents for Sony TA-AV581
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Page 1: Service Manual
50 kΩ Remote RM-U581 (1) (CENTER) 50 W (at front/rear/woofer off TUNER, TAPE, VIDEO1,2 (phono jacks): Sony SUM-3 (NS) batteries (2) at 1 kHz, 8 Ω) sensitivity 250 mV, impedance 50 kΩ Design and specifications are subject to change... -
Page 2: Table Of Contents
COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! 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. -
Page 3: General
SECTION 2 GENERAL LOCATION AND FUNCTION OF CONTROLS [FRONT PANEL] 1 POWER switch (I/u) !º TUNER button 2 DOLBY PRO LOGIC indicator !¡ CD button 3 SURROUND MODE buttons !™ TAPE button 4 +, – buttons !£ VIDEO 2 button 5 CONTROL MODE buttons !¢... -
Page 4: Diagrams
SECTION 3 DIAGRAMS 3-1. CIRCUIT BOARDS LOCATION TRANS 1 board OUTLET board (AEP, SP, AUS Model) TRANS 2 board POWER board REAR SP board SW board HP board DISPLAY board MAIN board VOL board THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. -
Page 5: Printed Wiring Boards - Display Section
TA-AV581 • See page 4 for Circuit Boards Location. 3-2. PRINTED WIRING BOARDS — DISPLAY SECTION — (Page 13) (Page 10) DISPLAY BOARD FL401 FLUORESCENT INDICATOR TUBE (STANDBY) CN402 CN401 (SIMULATED) (HALL) (DOLBY) (DOLBY PRO LOGIC) (SUPER WOOFER) IC401 (WOOFER) -
Page 6: Schematic Diagram - Display Section
TA-AV581 3-3. SCHEMATIC DIAGRAM — DISPLAY SECTION— • See page 4 for Waveform. • See page 19 for IC Pin Function Description. — 7 — — 8 —... -
Page 7: Printed Wiring Boards - Power Section
TA-AV581 • See page 4 for Circuit Boards Location. 3-4. PRINTED WIRING BOARDS — POWER SECTION — • Semiconductor REAR SP BOARD Location Ref. No. Location REAR SPEAKERS D951 D952 TRANS 1 BOARD POWER BOARD AC OUTLET D953 D954 CN906... -
Page 8: Schematic Diagram - Power Section
TA-AV581 3-5. SCHEMATIC DIAGRAM — POWER SECTION— — 11 — — 12 —... -
Page 9: Printed Wiring Board - Main Section
TA-AV581 • See page 4 for Circuit Boards Location. 3-6. PRINTED WIRING BOARD — MAIN SECTION — • Semiconductor Location MAIN BOARD Ref. No. Location D521 D522 D523 D560 D601 D610 G-10 D651 PHONO D710 D711 D721 D722 TUNER D723... -
Page 10: Schematic Diagram - Main Section (1/2)
TA-AV581 3-7. SCHEMATIC DIAGRAM — MAIN SECTION (1/2) — • See page 22 for IC Block Diagrams. —15 — — 16 —... -
Page 11: Schematic Diagram - Main Section (2/2)
TA-AV581 • See page 4 for Waveform. • See page 21,22 for IC Block Diagrams. 3-8. SCHEMATIC DIAGRAM — MAIN SECTION (2/2) — — 17 — — 18 —... -
Page 12: Ic Pin Function Description
3-9. IC PIN FUNCTION DESCRIPTION • IC401 µPD78042FGF-089-3B9 (DISPLAY BOARD) Pin No. Pin Name Function DIG 2 Fluorescent tube segment signal output DIG 3 Fluorescent tube segment signal output DIG 4 Fluorescent tube segment signal output DIG 5 Fluorescent tube segment signal output DIG 6 Fluorescent tube segment signal output DIG 7... - Page 13 Pin No. Pin Name Function — Ground +5 V — Power supply +5 V 10DB. ATT 10 dB ATT. switch output H when volume ATT. is used FUNC. MUTE Line mute control output H for muting S.W. PHASE Super Woofer phase switch output L for normal, H for reverse STANDBY LED STANDBY LED drive signal output —...
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Page 14: Ic Block Diagrams
3-10. IC BLOCK DIAGRAMS IC300 LV1041M (MAIN BOARD) R BPF2 L BPF2 RECT RECT LOGIC LOGIC R BPF1 RECT L BPF1 RECT LOGIC LOGIC RT IN S DC OUT C DC OUT R DC OUT LT IN L DC OUT CONTROL DC CUT V REF... - Page 15 IC101 LC7822 (MAIN BOARD) IC551 STK350-230 (MAIN BOARD) INPUT -VEOUT +VEOUT IN IN LEVEL SHIFT LATCH RESET SHIFT RESISTOR IC301 LC75373ED (MAIN BOARD) – LFIN – – – LFOUT – LSELO LROUT – – – VREF SHIFT DECODER LATCH CONTROL REGISTER –...
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Page 16: Exploded Views
1-769-867-11 WIRE (FLAT TYPE) (5 CORE) 4-951-620-01 SCREW (2.6 × 8), +BVTP 4-979-942-13 WINDOW 4-982-462-01 HOUSE, LED 1-773-217-11 WIRE (FLAT TYPE) (25 CORE) 4-963-404-02 EMBLEM (5-A), SONY * 17 A-4407-853-A DISPLAY BOARD, COMPLETE 4-979-941-01 BUTTON (SUR) * 18 1-669-721-11 VOL BOARD... -
Page 17: Chassis Section
4-2. CHASSIS SECTION E MODEL AEP, SP MODEL not supplied IC601 T901 AUS MODEL Q554 supplied Q703 Q553 Q753 Q754 Q704 not supplied not supplied not supplied not supplied not supplied Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks X-3371-405-2 FOOT (SMALL) ASSY... -
Page 18: Electrical Parts List
SECTION 5 DISPLAY ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in the • RESISTORS When indicating parts by reference number, parts list may be different from the parts All resistors are in ohms. please include the board name. specified in the diagrams or the components METAL: metal-film resistor used on the set. - Page 19 DISPLAY MAIN Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks R441 1-247-807-31 CARBON 1/4W S412 1-762-875-21 SWITCH, KEYBOARD (WOOFER ON/OFF) R442 1-247-807-31 CARBON 1/4W S413 1-762-875-21 SWITCH, KEYBOARD (1 LOCK) R443 1-247-807-31 CARBON 1/4W S414 1-762-875-21 SWITCH, KEYBOARD (2 POPS) R444 1-247-807-31 CARBON 1/4W...
- Page 20 MAIN Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks C155 1-137-365-11 FILM 0.0015uF 5% C347 1-126-962-11 ELECT 3.3uF C156 1-126-960-11 ELECT C348 1-136-167-00 FILM 0.15uF C157 1-164-159-11 CERAMIC 0.1uF C349 1-126-963-11 ELECT 4.7uF C158 1-162-291-31 CERAMIC 560PF C350 1-126-961-11 ELECT...
- Page 21 MAIN Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks C652 1-162-286-31 CERAMIC 220PF < DIODE > C653 1-104-664-11 ELECT 47uF C654 1-162-191-31 CERAMIC 2.2PF D521 8-719-911-19 DIODE 1SS119 C655 1-162-286-31 CERAMIC 220PF D522 8-719-911-19 DIODE 1SS119 C656 1-126-967-11 ELECT 47uF...
- Page 22 MAIN Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks < TRANSISTOR > R131 1-249-429-11 CARBON 1/4W R132 1-249-421-11 CARBON 2.2K 1/4W F Q121 8-729-922-37 TRANSISTOR 2SD2144S R134 1-249-429-11 CARBON 1/4W Q131 8-729-922-37 TRANSISTOR 2SD2144S R151 1-249-417-11 CARBON 1/4W F Q221 8-729-922-37 TRANSISTOR 2SD2144S...
- Page 23 MAIN Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks R373 1-249-417-11 CARBON 1/4W F R602 1-249-438-11 CARBON 1/4W R374 1-249-433-11 CARBON 1/4W R603 1-249-412-11 CARBON 1/4W F R375 1-249-441-11 CARBON 100K 1/4W R604 1-249-438-11 CARBON 1/4W R376 1-249-417-11 CARBON 1/4W F...
- Page 24 MAIN OUTLET POWER REAR SP Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks R745 1-249-435-11 CARBON 1/4W < CONNECTOR > R751 1-249-417-11 CARBON 1/4W F R752 1-249-439-11 CARBON 1/4W CN904 1-564-321-00 PIN, CONNECTOR 2P (AEP,SP,AUS) R753 1-249-413-11 CARBON 1/4W F CN905...
- Page 25 TA-AV581 TRANS 1 TRANS 2 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks 1-670-206-11 SW BOARD MISCELLANEOUS ******** ************* < CONNECTOR > 1-769-867-11 WIRE (FLAT TYPE) (5 CORE) 1-773-217-11 WIRE (FLAT TYPE) (25 CORE) CN407 1-568-668-11 CONNECTOR, BOARD TO BOARD 6P...