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Sony SA-WP785, Service Manual, Page: 5 / 14

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Sony SA-WP785 Service Manual Download Page 5

5

5

SA-WP785

SA-WP785

1-1. BLOCK DIAGRAM

IC202 (1/2)

BUFFER

IC203 (1/2)

AMP

RV801

(VOL)

J101

(AUDIO IN)

IC203 (2/2)

AMP

Q302, Q304

PRE DRIVE

Q307 - Q310

AMP

Q731

SWITCH

Q102

+V REG

+V

Q505

SWITCH

IC500

PROTECTION

D505

D504

D402
RECT

T1

POWER

TRANSFORMER

D801 - D804

RECT

RY301
RELAY

D901

(POWER)

F901

SP1

(SPEAKER)

Q303, Q305

CURRENT MIRROR

Q301, Q311

CURRENT REGULATOR

IC202 (2/2)

AMP

S901

(POWER)

Q103

-V REG

-V

6

DRIVER

RELAY

4

OFF

AC

1

LOAD
OVER

+V

+B

-B

AC

IN

Signal Path

: AUDIO

Summary of Contents for SA-WP785

Page 1: ...US Australian model SP Singapore model Speaker system Active subwoofer magnetically shielded Speaker unit 200 mm cone type Enclosure type Acoustically loaded bass reflex RMS output 190 W Power requirements Power consumption 80 W Dimensions w h d Approx 270 330 373 mm including front panel Mass Approx 8 3 kg Area code Power requirements AUS 240 V AC 50Hz SP 230 240 V AC 50 60 Hz Input LINE IN input...

Page 2: ...lar size LEAD FREE MARK Unleaded solder has the following characteristics Unleaded solder melts at a temperature about 40 C higher than ordinary solder Ordinary soldering irons can be used but the iron tip has to be applied to the solder joint for a slightly longer time Soldering irons using a temperature regulator should be set to about 350 C Caution The printed pattern copper foil may peel away ...

Page 3: ...Voltages and dc with respect to ground under no signal conditions no mark Power on Voltages are taken with a VOM Input impedance 10 MΩ Voltage variations may be noted due to normal production tolerances Signal path F AUDIO Abbreviation AUS Australian model SP Singapore model THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS In addition to this the necessary note is printed in ea...

Page 4: ...3 A INPUT 4 V 7 B OUTPUT 6 B INPUT 5 B INPUT 8 V IC500 uPC1237C A SWITCH FOR LATCH AUTOMATIC RESET OUTPUT OFFSET DETECTOR OVERLOAD DETECTOR AC OFF DETECTOR FLIP FLOP OUTPUT OFFSET DETECTOR OUTPUT OFFSET DETECTOR 1 LOADOVER 2 DETECT DC 3 RESET 4 OFF AC 6 DRIVER RELAY 5 GND 7 OFF AC 8 VCC ...

Page 5: ...RIVE Q307 Q310 AMP Q731 SWITCH Q102 V REG V Q505 SWITCH IC500 PROTECTION D505 D504 D402 RECT T1 POWER TRANSFORMER D801 D804 RECT RY301 RELAY D901 POWER F901 SP1 SPEAKER Q303 Q305 CURRENT MIRROR Q301 Q311 CURRENT REGULATOR IC202 2 2 AMP S901 POWER Q103 V REG V 6 DRIVER RELAY 4 OFF AC 1 LOAD OVER V B B AC IN Signal Path AUDIO ...

Page 6: ...POWER TRANS BOARD CNP401 Page 8 JW100 C302 C308 C310 C128 C127 C121 Q103 Q102 R123 R216 C204 C206 G1 R209 R207 R205 R202 R210 R212 R206 R315 C201 D101 R124 C301 R304 R330 R324 C307 Q305 Q304 JW108 JW114 JW115 JW116 R509 JW112 JW111 JW113 R318 R328 R319 R314 JW109 JW110 R329 C313 C309 R301 R308 Q301 D307 D304 D303 D306 C303 R306 D308 D309 R309 JW102 JW101 R310 R323 R322 R321 R320 R507 RY301 R305 C3...

Page 7: ... 35V 100 35V 10 50V 1k 47k 220p 10 50V 0 22 47 35V 220p 1k 47k 1k 100k 8 2k 2 2k 560 47k 330 10k 22k 180 330 10k 10k D5SBA204101 180 180 180 12V RELAY 10 50V 220p 220p 180 22k 100k 4 7k 100P 500V NJM4565D NJM4565D NJM4565D NJM4565D 33 1 2k 8 2k 15k 10k 22k 47k 100k 100 10V 22 100V 2200p 2200p 10k 10k 10k 1k 1k 22k 0 22 50V MF 0 022 50V MF 0 68 50V MF 0 1 0 1 47 25V 47 25V 0 022 0 022 100 10V 0 022...

Page 8: ... Location POWER TRANS BOARD SWITCH BOARD 1 869 083 11 11 F901 T1 POWER TRANSFORMER 1 2 1 2 1 2 POWER AC IN A MAIN BOARD CN402 Page 6 1 869 086 11 11 1 A B C D E F G H I J 2 3 4 5 6 7 CN3 CN20 C901 S901 CN1 JW901 JW902 FH903 FH904 CNP401 CN3 CN1 JW1 CN20 FH903 FH904 CNP401 T1 F901 S901 C901 2P 2P 2P 6P 7 POWER TRANSFORMER POWER 0 0047 250V T1AL 250V ...

Page 9: ...1 1 4 11 12 5 8 9 10 10 10 10 not supplied not supplied 1 A 1221 943 A WOOFER RING ASSY 2 4 999 482 91 KNOB VOL 03 1 696 848 81 CORD POWER AUS 03 1 777 071 23 CORD POWER SP 4 A 1237 500 A MAIN BOARD COMPLETE 5 3 905 609 32 SCREW TRANSISTOR 6 4 229 966 12 SCREW 4X16 BV TAPPING 7 3 703 244 00 BUSHING 2104 CORD 8 4 244 832 51 KNOB POWER 9 A 1223 204 A SPEAKER CABINET ASSY 10 4 986 971 12 SCREW 3 5 11...

Page 10: ...6 175 00 FILM 0 68uF 5 50V C209 1 128 813 11 CERAMIC 220PF 5 50V C210 1 127 888 11 CERAMIC 0 1uF 10 50V C211 1 128 813 11 CERAMIC 220PF 5 50V C212 1 127 888 11 CERAMIC 0 1uF 10 50V C301 1 128 813 11 CERAMIC 220PF 5 50V C302 1 126 964 11 ELECT 10uF 20 50V C303 1 104 658 91 ELECT 100uF 20 10V C304 1 128 813 11 CERAMIC 220PF 5 50V C305 1 128 825 11 CERAMIC 2200PF 5 50V C306 1 102 973 00 CERAMIC 100PF...

Page 11: ...RBON 22K 5 1 4W R212 1 249 428 11 CARBON 8 2K 5 1 4W R213 1 249 428 11 CARBON 8 2K 5 1 4W R214 1 247 879 91 CARBON 100K 5 1 4W R216 1 247 831 91 CARBON 1K 5 1 4W R217 1 247 879 91 CARBON 100K 5 1 4W R301 1 247 831 91 CARBON 1K 5 1 4W R304 1 247 871 91 CARBON 47K 5 1 4W R305 1 249 418 11 CARBON 1 2K 5 1 4W R307 1 249 411 11 CARBON 330 5 1 4W R308 1 249 411 11 CARBON 330 5 1 4W R309 1 249 408 11 CAR...

Page 12: ...ITCH 2P CN20 1 695 044 11 PIN CONNECTOR 3 96mm PITCH 2P SWITCH 0S901 1 572 267 51 SWITCH PUSH AC POWER 1 KEY MISCELLANEOUS 03 1 696 848 81 CORD POWER AUS 03 1 777 071 23 CORD POWER SP 0F901 1 532 463 33 FUSE T1AL 250V Q307 6 702 391 01 IC MP1620 OPY MK Q308 6 702 390 01 IC MN2488 OPY MK SP1 1 826 412 11 LOUDSPEAKER 20cm 0T1 1 443 886 21 TRANSFORMER POWER SWITCH ...

Page 13: ...13 SA WP785 MEMO ...

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 2007 04 New ...

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