Sony STR-DE425 - Fm Stereo/fm-am Receiver, Service Manual

Page 1: ... 10 kilohms VIDEO AUDIO OUT Voltage 150 mV Impedance 10 kilohms WOOFER MIX AUDIO OUT Voltage 2V Impedance 10 kilohms PHONES Accepts low and high impedance headphones Muting Full mute BASS BOOST 10dB at 70 Hz TONE 8dB at 100 Hz and 10 kHz FM tuner section Tuning range 87 5 108 0 MHz Aerial terminals 75 ohms unbalanced Sensitivity Mono 18 3 dBf 2 2µV 75 ohms Stereo 38 3 dBf 22 5µV 75 ohms Usable sen...

Page 2: ...meter The Data Precision 245 digital multimeter is suitable for this job 3 Measuring the voltage drop across a resistor by means of a VOM or battery operatedAC voltmeter The limit indication is 0 75 V so analog meters must have an accurate low voltage scale The Simpson 250 and Sanwa SH 63Trd are examples of a passive VOM that is suitable Nearly all battery operated digital multimeters that have a ...

Page 3: ...S BOOST buttons TV LD button TAPE MD button PHONO button TUNER button CD button ª VIDEO button º Numeric buttons DIRECT TUNING SHIFT buttons CHARACTER DISPLAY buttons MEMORY button FM AM button PRESET CHARACTER buttons FM MODE button SLEEP button TUNING PTY SELECT buttons ª RDS PTY EON buttons º PHONES jack SPEAKERS A B ON OFF buttons 1 ANTENNA FM AM 2 5 1 DVD INPUT 3 y SIGNAL GND 4 MONITOR 5 WOOF...

Page 4: ... RDS model only Procedure While depressing the MEMORY button press the power I u button to turn on the main power The messageAUTO BET appears and each function is selected one after another AM CHANNEL STEP 9 kHz 10 kHz SELECTION MODE Either the 9 kHz step or 10 kHz step can be selected for the AM channel step US CND and E model only Procedure Set the FUNCTION to AM Turn off the main power While de...

Page 5: ... 5 SECTION 3 DIAGRAMS 3 1 CIRCUIT BOARDS LOCATION PRIMARY board DISPLAY board SP SW board 10 KEY board VR TONE board VOLUME board MAIN board VIDEO board STAND BY board SP SCREW board SECONDARY board ...

Page 6: ... taken with a oscilloscope Circled numbers refer to waveforms Signal path F FM Abbreviation CND Canadian EE East European AUS Australian CH Chinese G German MY Malaysia SP Singapore THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS In addition to this necessary note is printed in each block For printed wiring boards Note X parts extracted from the component side Through hole int...

Page 7: ...RIVE Q610 RY601 RELAY DRIVE Q367 RY301 D321 B D311 D728 D727 D726 D725 D723 D203 D724 SPEAKER A SPEAKER B ON OFF ON OFF S701 R CH R CH R CH R CH B A 8 7 3 2 MOTOR DRIVER IC202 UP DOWN VIDEO SELECT IC251 V3 12 V1 1 MON 10 V2 3 OUT 5 13 S1 2 S2 4 S2 11 MUTE S1 58 S2 57 MUTE 36 SYSTEM CONTROL IC201 46 RDS DATA 45 45 45 RDS CLK 11 PLL DATA 40 T MUTE 19 STEREO 18 AUTO STOP 25 SIGNAL 12 S CE 9 S CLK 10 ...

Page 8: ...STR DE425 9 10 3 3 SCHEMATIC DIAGRAM DISPLAY SECTION ...

Page 9: ... CNS701 TO MAIN BOARD CNS204 B E B E MASTER VOLUME M B E B B B B B E E E E E RD1 RD2 RD3 RD4 RD5 RD6 RD7 RD8 RD9 RD10 RD11 RD12 RD13 RD14 RD15 RD16 RD17 RD18 RD19 RD20 RD21 RD22 RD23 RD24 RD25 B E AEP UK G EE MODEL AEP UK G EE MODEL AEP UK G EE MODEL AEP UK G EE AUS MODEL EXCEPT AEP UK G EE MODEL EXCEPT AEP UK G EE MODEL AEP UK G EE MODEL E SP MY CH EE MODEL E SP MY CH AUS MODEL 16 Page 17 Page 17...

Page 10: ...STR DE425 13 14 3 5 SCHEMATIC DIAGRAM POWER SECTION ...

Page 11: ...N500 I TO MAIN BOARD CN801 1 10 T901 POWER TRANSFORMER 1 2 1 1 1 1 10 14 8 7 1 1 1 3 5 5 8 2 R A B L TMS701 FRONT SPEAKERS S701 1 SPEAKER B J253 WOOFER AUDIO OUT TV LD VIDEO IN MONITOR VIDEO OUT CENTER WOOFER VIDEO VIDEO IN VIDEO OUT J741 PHONES S701 2 SPEAKER A CNJ902 AC OUTLET OFF ON F L R L R FRONT REAR J501 J251 J252 XA XA AEP UK G EE MODEL XB EXCEPT AEP UK G EE MODEL XA XA XA XB S701 1 S701 2...

Page 12: ...Y801 EXCEPT CND MODEL US CND AUS MODEL US CND AUS MODEL EXCEPT US CND AUS MODEL EXCEPT AEP UK G EE MODEL AEP UK G EE MODEL AEP UK G EE MODEL AEP UK G EE MODEL EXCEPT US CND AUS MODEL EXCEPT AEP UK G EE MODEL EXCEPT US CND MODEL US CND MODEL 16 Page 15 Page 16 Page 16 Page 15 Page 15 Page 11 Page 11 Page 15 Page 15 Page 11 Page 11 Ref No Location D310 D 6 D311 J 5 D312 J 5 D421 G 5 D560 C 7 D610 D ...

Page 13: ...STR DE425 19 20 3 8 SCHEMATIC DIAGRAM MAIN SECTION 1 3 ...

Page 14: ...STR DE425 21 22 3 9 SCHEMATIC DIAGRAM MAIN SECTION 2 3 ...

Page 15: ...STR DE425 23 24 3 10 SCHEMATIC DIAGRAM MAIN SECTION 3 3 ...

Page 16: ...ay drive Surround Relay Power relay drive Ground A D signal input terminal A D3 key input terminal A D2 key input terminal A D1 key input terminal Power supply 5V Reference voltage 5V Ground Not used Open Ground System clock 4 19MHz System clock 4 19MHz Mute drive output for NJM2279 IC251 Plologic LED CINEMA STUDIO LED HALL LED Tuner mute drive output Pin Name DIG7 DIG6 DIG5 DIG4 DIG3 DIG2 DIG1 5V...

Page 17: ...st LED drive Line mute drive SL mute drive Input for model select Key in 4 Key in 3 Key in 2 Key in 1 SR mute drive Key out 15 Key out 14 Key out 13 Key out 12 Key out 11 Key out 10 Key out 9 Key out 8 Key out 7 Connect to 24V Key out 6 Key out 5 Key out 4 Key out 3 Key out 2 Key out 1 Fluorescent indicator tube drive Pin Name VOLUME UP VOLUME DOWN NC SYS POWER RDS DATA IN RDS CLK IN STOP Vss SIRC...

Page 18: ...OUTPUT SELECTOR SWITCH RECONSTRUCTION FILTER 14 15 16 13 12 11 10 9 3 2 1 4 5 6 7 8 CLOCK REGENERATION AND SYNC VP1 RDCL TS7 OSCO OSCI V DDD V SSD TEST TSTLD QUAL RDDA Vref MUX V DDA V SSA CIN SCOUT 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 CONTROL LATCH SHIFT RESISTOR LEVEL SHIFT CL DI CE VEE OUT IN OUT IN OUT IN VSS S RESET VDD OUT IN IN OUT IN OUT IN 1 2 3...

Page 19: ...TCH SWITCH OUTPUT1 IC202 BA6208 IC950 NJM2103D 1 2 3 4 5 6 7 8 V VSB SESIN VSA RESET GND OUTC VSC CR VREF Q R S IC701 uPC2581V 2 3 5 4 6 7 9 8 1 MUTE VOUT1 VOUT1 COMP1 MF1 IN1 GND IN2 NF2 COMP2 VOUT2 VOUT2 VCC1 VCC2 VEE PROTECTOR BIAS CIRCUIT REG DRIVE PRE DRIVE 11 10 12 13 15 14 DRIVE PRE DRIVE ...

Page 20: ...rks Ref No Part No Description Remarks 4 1 FRONT PANEL SECTION pA VOLUME board a SONY a 15 16 16 16 10 9 7 6 12 5 4 3 2 1 3 4 11 10 8 1 10 pA 10 not supplied not supplied 1 1 1 13 14 1 4 998 717 01 KNOB BAL 2 X 4949 627 1 KNOB VOL ASSY 3 4 977 593 11 RING DIA 50 ORNAMENTAL EXCEPT US CND 4 4 977 358 11 CUSHION US CND 5 4 996 698 01 EMBLEM SONY 6 4 998 189 01 BUTTON P T 7 X 4949 624 1 FRONT PANEL AS...

Page 21: ... 60 A 4407 533 A MAIN BOARD COMPLETE AUS 60 A 4407 535 A MAIN BOARD COMPLETE E SP MY CH 60 A 4407 545 A MAIN BOARD COMPLETE AEP UK G EE 61 1 669 284 11 SP SCREW BOARD AEP UK G EE E SP MY CH 62 1 669 283 11 VIDEO BOARD 63 1 693 407 41 TUNER US CND 63 1 693 408 41 TUNER AUS AEP UK G E SP MY CH 63 1 693 411 41 TUNER EE 64 1 782 080 11 WIRE FLAT TYPE 15 CORE 65 1 782 074 11 WIRE FLAT TYPE 7 CORE 66 X ...

Page 22: ...9 911 19 DIODE 1SS119 D203 8 719 911 19 DIODE 1SS119 D204 8 719 911 19 DIODE 1SS119 D211 8 719 911 19 DIODE 1SS119 D212 8 719 911 19 DIODE 1SS119 D213 8 719 991 33 DIODE 1SS133T 77 AEP UK G EE D214 8 719 991 33 DIODE 1SS133T 77 AEP UK G EE D215 8 719 911 19 DIODE 1SS119 D216 8 719 911 19 DIODE 1SS119 D217 8 719 911 19 DIODE 1SS119 D218 8 719 911 19 DIODE 1SS119 D221 8 719 911 19 DIODE 1SS119 EE E ...

Page 23: ...NTER LEVEL S203 1 762 751 11 SWITCH TACTILE REAR LEVEL S204 1 762 751 11 SWITCH TACTILE REAR LEVEL S205 1 762 751 11 SWITCH TACTILE PTY AEP UK G EE S206 1 762 751 11 SWITCH TACTILE EON AEP UK G EE S207 1 762 751 11 SWITCH TACTILE CHARACTER AEP UK G EE S208 1 762 751 11 SWITCH TACTILE DISPLAY AEP UK G EE S209 1 762 751 11 SWITCH TACTILE TUNING PTY SELECT S210 1 762 751 11 SWITCH TACTILE TUNING PTY ...

Page 24: ...CERAMIC 560PF 10 50V C413 1 164 159 11 CERAMIC 0 1uF 50V C415 1 164 159 11 CERAMIC 0 1uF 50V C416 1 164 159 11 CERAMIC 0 1uF 50V C425 1 126 795 11 ELECT 10uF 20 25V C426 1 126 795 11 ELECT 10uF 20 25V C427 1 162 207 31 CERAMIC 22PF 5 50V C428 1 124 252 00 ELECT 0 33uF 20 50V C429 1 130 489 00 MYLAR 0 033uF 5 50V C430 1 102 973 00 CERAMIC 100PF 5 50V C434 1 162 286 31 CERAMIC 220PF 10 50V C435 1 16...

Page 25: ...11 CERAMIC 0 022uF 50V C952 1 126 960 11 ELECT 1uF 20 50V C953 1 124 464 11 ELECT 0 22uF 20 50V C954 1 126 795 11 ELECT 10uF 20 50V C955 1 164 159 11 CERAMIC 0 1uF 50V CC01 1 162 282 31 CERAMIC 100PF 10 50V AEP UK G EE CC02 1 162 282 31 CERAMIC 100PF 10 50V AEP UK G EE CC03 1 162 282 31 CERAMIC 100PF 10 50V AEP UK G EE CC04 1 162 282 31 CERAMIC 100PF 10 50V AEP UK G EE CC05 1 162 282 31 CERAMIC 10...

Page 26: ...R 2SA1175 HFE Q702 8 729 141 30 TRANSISTOR 2SC3623A LK Q703 8 749 010 25 IC MN2488 OPY M Q704 8 749 010 26 IC MP1620 OPY M Q710 8 729 119 78 TRANSISTOR 2SC403SP 51 Q720 8 729 140 82 TRANSISTOR 2SA988 PAFAEA Q721 8 729 140 82 TRANSISTOR 2SA988 PAFAEA Q722 8 729 140 84 TRANSISTOR 2SC1841 PAFAEA Q723 8 729 119 78 TRANSISTOR 2SC403SP 51 Q751 8 729 119 76 TRANSISTOR 2SA1175 HFE Q752 8 729 141 30 TRANSI...

Page 27: ...37 11 CARBON 47K 5 1 4W R481 1 247 843 11 CARBON 3 3K 5 1 4W R482 1 247 883 00 CARBON 150K 5 1 4W R483 1 249 427 11 CARBON 6 8K 5 1 4W F R484 1 249 413 11 CARBON 470 5 1 4W F R491 1 249 441 11 CARBON 100K 5 1 4W R492 1 247 903 00 CARBON 1M 5 1 4W R494 1 247 903 00 CARBON 1M 5 1 4W R501 1 247 843 11 CARBON 3 3K 5 1 4W R502 1 249 425 11 CARBON 4 7K 5 1 4W F R503 1 249 429 11 CARBON 10K 5 1 4W R504 1...

Page 28: ...1 CARBON 390 5 1 4W F US CND AUS E SP MY CH R754 1 249 439 11 CARBON 68K 5 1 4W R760 1 249 421 11 CARBON 2 2K 5 1 4W F R761 1 249 440 11 CARBON 82K 5 1 4W R763 1 249 414 11 CARBON 560 5 1 4W F R764 1 249 409 11 CARBON 220 5 1 4W F AEP UK G EE R764 1 249 408 11 CARBON 180 5 1 4W F US CND AUS E SP MY CH R765 1 249 409 11 CARBON 220 5 1 4W F AEP UK G EE R765 1 249 408 11 CARBON 180 5 1 4W F US CND AU...

Page 29: ... 164 096 11 CERAMIC 0 01uF 50V CC63 1 164 096 11 CERAMIC 0 01uF 50V CONNECTOR CNS707 1 564 505 11 PLUG CONNECTOR 2P RESISTOR RR04 1 249 393 11 CARBON 10 5 1 4W F RR05 1 249 393 11 CARBON 10 5 1 4W F RR54 1 249 393 11 CARBON 10 5 1 4W F RR55 1 249 393 11 CARBON 10 5 1 4W F TERMINAL TMS701 1 537 740 11 TERMINAL BOARD FRONT SPEAKERS 1 669 282 11 SP SW BOARD CONNECTOR CNP703 1 764 474 11 PIN CONNECTOR...

Page 30: ...1 249 421 11 CARBON 2 2K 5 1 4W F R280 1 249 421 11 CARBON 2 2K 5 1 4W F R282 1 249 421 11 CARBON 2 2K 5 1 4W F A 4407 451 A VR TONE BOARD COMPLETE CAPACITOR C220 1 126 301 11 ELECT 1uF 20 50V C221 1 126 301 11 ELECT 1uF 20 50V C361 1 164 159 11 CERAMIC 0 1uF 50V C362 1 164 159 11 CERAMIC 0 1uF 50V C363 1 164 159 11 CERAMIC 0 1uF 50V C364 1 164 159 11 CERAMIC 0 1uF 50V C365 1 164 159 11 CERAMIC 0 ...

Page 31: ...ARBON 680 5 1 4W F R249 1 249 417 11 CARBON 1K 5 1 4W F R250 1 249 419 11 CARBON 1 5K 5 1 4W F R251 1 249 421 11 CARBON 2 2K 5 1 4W F R252 1 247 843 11 CARBON 3 3K 5 1 4W R253 1 249 425 11 CARBON 4 7K 5 1 4W F SWITCH S217 1 554 303 21 SWITCH TACTILE EFFECT DELAY S218 1 554 303 21 SWITCH TACTILE SURROUND ON OFF S219 1 554 303 21 SWITCH TACTILE BASS BOOST S220 1 554 303 21 SWITCH TACTILE PHONES AEP ...

Page 32: ...AL INSTRUCTION ENGLISH FRENCH GERMAN DUTCH ITALIAN 3 862 354 21 MANUAL INSTRUCTION ENGLISH 3 862 354 31 MANUAL INSTRUCTION ENGLISH FRENCH 3 862 354 41 MANUAL INSTRUCTION SPANISH SWEDISH FINNISH DANISH PORTUGUESE 3 862 354 51 MANUAL INSTRUCTION ENGLISH RUSSIAN POLISH 3 862 354 61 MANUAL INSTRUCTION ENGLISH FRENCH SPANISH CHINESE HARDWARE LIST 1 7 685 646 79 SCREW BVTP 3 8 TYPE2 IT 3 2 7 685 881 09 ...

Page 33: ...STR DE425 42 Sony Corporation Home A V Products Company 9 922 811 11 98C1690 1 Printed in Japan 1998 3 Published by General Engineering Dept Shibaura ...