background image

SERVICE MANUAL

INTEGRATED STEREO AMPLIFIER

E Model

SPECIFICATIONS

TA-DX80

Ver 1.0  2001.03

9-929-592-11

Sony Corporation

2001C0500-1

Audio Entertainment Group

C

 2001.3

General Engineering Dept.

TA-DX80 is the amplifier section in
MHC-DX80, MHC-VX888.

The following measured at AC 120, 220, 240 V 50/60 Hz
DIN power output (rated) 75 + 75 watts

(6 ohms at 1 kHz, DIN)

Continuous RMS power output (reference)

100 + 100 watts
(6 ohms at 1 kHz, 10% THD)

Inputs
MD/VIDEO (AUDIO) IN: voltage 450 mV/250 mV,
(phono jacks)

impedance 47 kilohms

MIC:

sensitivity 1 mV,

(phone jack)

impedance 10 kilohms

Outputs
PHONES:

accepts headphones of

(stereo mini jack)

8 ohms or more

FRONT SPEAKER:

accepts impedance of 6 to 16 ohms

SURROUND SPEAKER: accepts impedance of 6 ohms

General

Power requirements
Mexican models:

120 V AC, 60Hz

E91 models:

220 V AC, 50/60 Hz

Other models:

120 V, 220 V or 230 – 240 V AC, 50/60Hz
Adjustable with voltage selector

Power consumption

180 watts

Dimensions (w/h/d)

Approx. 150 

×

 360 

×

 343 mm

Mass:

Approx. 5.5 kg

Design and specifications are subject to change without notice.

• Abbreviation

E91: 220 V AC area in E model

Summary of Contents for TA-DX80

Page 1: ...IDEO AUDIO IN voltage 450 mV 250 mV phono jacks impedance 47 kilohms MIC sensitivity 1 mV phone jack impedance 10 kilohms Outputs PHONES accepts headphones of stereo mini jack 8 ohms or more FRONT SPEAKER accepts impedance of 6 to 16 ohms SURROUND SPEAKER accepts impedance of 6 ohms General Power requirements Mexican models 120 V AC 60Hz E91 models 220 V AC 50 60 Hz Other models 120 V 220 V or 230...

Page 2: ...OMPONENTS 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 PUB LISHED BY SONY MODEL IDENTIFICATION REAR VIEW Notes on chip component replacement Never reuse a disconnected chip component Notice that the minus side...

Page 3: ...ront view 1 Indicator 2 LINK SURROUND SUB WOOFER indicator 3 SURROUND SPEAKER MODE switch 4 SURROUND SPEAKER LEVEL control 1 SYSTEM CONTROL connector 2 SPEAKER terminal 3 VOLTAGE SELECTOR switch EXCEPT Mexican and E91 models 4 AC IN terminal Abbreviation E91 220 V AC area in E model Rear view 1 2 3 4 ...

Page 4: ...ASSEMBLY Note Follow the disassembly procedure in the numerical order given 3 2 CASE 3 3 FRONT PANEL SECTION Page 5 3 2 CASE Page 4 3 4 MAIN BOARD Page 5 1 screw case3 TP2 8 mm 1 screw case3 TP2 10 mm 1 screw case3 TP2 10 mm 1 screw case3 TP2 8 mm 2 three screws BVTP3 8 2 four screws BVTP3 8 3 case ...

Page 5: ...d C E Q Note on Schematic Diagram All capacitors are in µF unless otherwise noted pF µµF 50 WV or less are not indicated except for electrolytics and tantalums All resistors are in Ω and 1 4 W or less unless otherwise specified 2 nonflammable resistor 5 fusible resistor C panel designation A B Line B B Line Voltages are dc with respect to ground under no signal conditions Voltages are taken with a...

Page 6: ...155 R440 R441 Q427 R502 R442 R552 LP2 R504 Q321 Q323 Q322 Q324 Q325 Q326 Q327 Q328 R331 R332 R325 R326 R327 R328 R330 R323 R324 R321 R322 R333 R334 D321 C322 C321 C323 C324 C121 R125 IC121 Q262 Q261 R262 R263 C503 R335 C163 C161 C162 Q161 C171 R161 R162 R163 R166 R165 R329 R503 R124 R130 Q501 C126 C176 JW125 JW126 JW128 JW129 JW130 JW131 JW132 JW133 JW134 JW135 JW136 JW137 JW138 JW139 JW140 JW141 ...

Page 7: ...TA DX80 7 7 4 3 SCHEMATIC DIAGRAM MAIN Board The components identified by mark 0 or dotted line with mark 0 are critical for safety Replace only with part number specified Page 9 Page 9 ...

Page 8: ...01 SURROUND SPEAKER MODE 3 1 S D G 4 1 5 8 S G D RV401 1 2 SURROUND SPEAKER LEVEL 1 680 837 11 11 S501 VOLTAGE SELECTOR 230 240V t 220V t 120V EXCEPT MX E91 2 1 NO801 E91 MX EXCEPT MX EXCEPT E91 EXCEPT MX EXCEPT MX E91 1 3 B MAIN BOARD CN501 T501 POWER TRANSFORMER NOT REPLACEABLE BUILT IN TRANSFORMER 1 680 838 11 11 TRANS BOARD 2 1 2 1 CN601 AC IN 1 681 956 11 11 INLET BOARD B C D E F A 1 2 3 4 5 ...

Page 9: ...TA DX80 9 9 4 5 SCHEMATIC DIAGRAM INLET PANEL TRANS Boards The components identified by mark 0 or dotted line with mark 0 are critical for safety Replace only with part number specified Page 7 Page 7 ...

Page 10: ...1 ELECT 22uF 20 50V C131 1 126 960 11 ELECT 1uF 20 50V C132 1 126 960 11 ELECT 1uF 20 50V C141 1 126 961 11 ELECT 2 2uF 20 50V C151 1 126 965 11 ELECT 22uF 20 50V C152 1 136 161 00 FILM 0 047uF 5 50V C153 1 126 961 11 ELECT 2 2uF 20 50V C154 1 136 165 00 FILM 0 1uF 5 50V C161 1 136 165 00 FILM 0 1uF 5 50V C162 1 136 165 00 FILM 0 1uF 5 50V C163 1 126 961 11 ELECT 2 2uF 20 50V C171 1 126 961 11 ELE...

Page 11: ...8 TRANSISTOR 2SC2785TP HFE Q201 8 729 140 84 TRANSISTOR 2SC1841TP PAFAEA Q251 8 729 140 84 TRANSISTOR 2SC1841TP PAFAEA Q261 8 729 140 84 TRANSISTOR 2SC1841TP PAFAEA Q262 8 729 140 82 TRANSISTOR 2SA988TP PAFAEA Q263 8 729 140 84 TRANSISTOR 2SC1841TP PAFAEA Q321 8 729 119 76 TRANSISTOR 2SA1175TP HFE Q322 8 729 119 78 TRANSISTOR 2SC2785TP HFE Q323 8 729 119 78 TRANSISTOR 2SC2785TP HFE Q324 8 729 119 ...

Page 12: ...5 1 4W R323 1 249 429 11 CARBON 10K 5 1 4W R324 1 249 435 11 CARBON 33K 5 1 4W R325 1 249 431 11 CARBON 15K 5 1 4W R326 1 249 433 11 CARBON 22K 5 1 4W R327 1 249 426 11 CARBON 5 6K 5 1 4W R328 1 249 427 11 CARBON 6 8K 5 1 4W R329 1 249 425 11 CARBON 4 7K 5 1 4W R330 1 249 425 11 CARBON 4 7K 5 1 4W R331 1 249 429 11 CARBON 10K 5 1 4W R332 1 249 441 11 CARBON 100K 5 1 4W R333 1 249 417 11 CARBON 1K ...

Page 13: ...25 11 CARBON 4 7K 5 1 4W R403 1 249 425 11 CARBON 4 7K 5 1 4W R404 1 249 441 11 CARBON 100K 5 1 4W R405 1 247 903 00 CARBON 1M 5 1 4W R421 1 249 409 11 CARBON 220 5 1 4W R422 1 249 417 11 CARBON 1K 5 1 4W R423 1 249 441 11 CARBON 100K 5 1 4W R424 1 247 807 31 CARBON 100 5 1 4W R425 1 249 417 11 CARBON 1K 5 1 4W R426 1 247 807 31 CARBON 100 5 1 4W R427 1 247 807 31 CARBON 100 5 1 4W R428 1 249 409 ...

Page 14: ...TORY Clicking the version allows you to jump to the revised page Also clicking the version at the upper right on the revised page allows you to jump to the next revised page Ver Date Description of Revision 1 0 2001 03 New ...

Reviews: