Sony STR-DE235 Service Manual Download

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MICROFILM

SERVICE MANUAL

FM STEREO/FM-AM RECEIVER

AEP Model

UK Model

STR-DE235

SPECIFICATIONS

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Summary of Contents for STR-DE235

Page 1: ...MICROFILM SERVICE MANUAL FM STEREO FM AM RECEIVER AEP Model UK Model STR DE235 SPECIFICATIONS Continued on next page ...

Page 2: ...ematic Diagram Main Board 3 4 23 4 10 Schematic Diagram Main Board 4 4 SECONDARY Board STANDBY Board PRIMARY Board 25 4 11 Printed Wiring Boards PANEL Section 27 4 12 Schematic Diagram PANEL Section 29 4 13 Printed Wiring Boards VOLUME Board TONE Board 31 4 14 Schematic Diagram VOLUME Board TONE Board 32 4 15 IC Pin Function Description 36 5 EXPLODED VIEWS 38 6 ELECTRICAL PARTS LIST 41 SAFETY RELA...

Page 3: ...INEMA indicator MUSIC indicator BASS BOOST button and indicator SPEAKERS A B ON OFF buttons PHONES jack ª SHIFT button º Numeric buttons DIRECT button MEMORY button FM MODE button CD button TUNER button EFFECT DELAY button and indicator CENTER button and indicator button ª button º REAR button and indicator ENTER button NAME button and indicator VOLUME control MUTING button and indicator TREBLE co...

Page 4: ...ure in the numerical order given SECTION 2 DISASSEMBLY 1 two screws case3 TP2 1 screw case3 TP2 1 two screws case3 TP2 2 case 2 three connectors CNP702 704 4 claw 5 front panel section 3 screw BVTP3 8 3 four screws BVTP3 8 4 claw 1 three flat wires CNS204 403 701 ...

Page 5: ...BETICAL Check Mode To auto scanning and memories of RDS station Procedure 1 While pressing the MEMORY button press the 1 u button to turn the power ON 2 The message AUTO BET appears and each function is se lected one after another Software Version Display Mode The software version is displayed Procedure 1 While pressing two the buttons of MD TAPE and DIRECT simultaneously press the 1 u button to t...

Page 6: ...IDEO AUDIO IN L R RV421 BASS RV422 TREBLE RV423 BALANCE R CH TV LD AUDIO IN L R R CH J401 1 2 MD TAPE IN L R LINE AMP IC302 1 2 LINE AMP IC404 1 2 LINE AMP IC404 2 2 LINE AMP IC302 2 2 MOTOR DRIVE MUTING Q363 25 24 L OUT R OUT MUTING Q361 MUTING Q362 OSC MUTING Q365 ANTENNA AM FM 75Ω COAXIAL R CH R CH CD IN L R R CH R CH J402 2 2 J401 2 2 VIDEO AUDIO OUT MD TAPE REC OUT L R R CH L R R CH CD R CH 2...

Page 7: ... 752 NF VOUT1 VOUT1 IN1 NF1 5 6 3 2 POWER AMP IC701 2 2 A Page 8 REAR PRE DRIVE DRIVER FINAL DRIVER Q653 654 OVER LOAD DETECT Q670 BIAS Q651 652 NF VOUT2 VOUT2 IN2 NF2 9 8 11 12 POWER AMP IC702 2 2 PRE DRIVE DRIVER FINAL DRIVER Q603 604 OVER LOAD DETECT Q620 BIAS Q601 602 NF VOUT2 VOUT2 IN2 NF2 9 8 11 12 D Page 8 CENTER PROTECT SWITCH Q721 723 D721 SPEAKER PROTECT RELAY DRIVE Q610 RY601 2 2 SPEAKE...

Page 8: ...T V VSB 12V 12V RELAY B 10V DOLBY SURROUND PRO LOGIC CIRCUIT IC300 301 B 5V DISPLAY SECTION B 5V FM AM TUNER PACK RDS DECODER IC1 B FUNCTION SWITCH IC401 AUDIO LINE AMP CIRCUIT POWER AMP CIRCUIT 24V FL DRIVER IC201 B 5V SYSTEM CONTROLLER IC201 B RESET SIGNAL GENERATOR 5 6V REGULATOR IC950 B B 1 2 TO FL201 F1 F2 T902 POWER TRANSFORMER T901 POWER TRANSFORMER AC OUTLET SWITCHED 100W MAX CNJ903 AEP RY...

Page 9: ...C panel designation Note The components identified by mark or dotted line with mark are critical for safety Replace only with part number specified U B Line V B Line Voltages and waveforms are dc with respect to ground under no signal detuned conditions no mark TUNER FM Voltages are taken with aVOM Input impedance 10 MΩ Voltage variations may be noted due to normal produc tion tolerances Waveforms...

Page 10: ...18 C 13 D820 C 12 D821 C 12 D822 C 12 D823 C 12 IC1 B 1 IC300 E 3 IC301 G 4 IC302 F 1 IC401 B 3 IC701 G 7 IC702 C 7 IC801 D 5 IC802 D 5 IC803 A 2 IC804 E 5 IC805 D 3 IC950 A 10 Q361 H 2 Q362 H 2 Q363 H 2 Q365 H 2 Q401 H 6 Q402 C 6 Q451 E 7 Q452 H 5 Q601 C 7 Q602 B 8 Q603 C 8 Q604 B 8 Q610 B 6 Q620 C 7 Q651 F 8 Q652 F 8 Q653 F 8 Q654 E 8 Q670 F 8 Q701 H 7 Q702 H 8 Q703 H 8 Q704 G 8 Q710 H 11 Q720 G...

Page 11: ...STR DE235 17 18 4 6 PRINTED WIRING BOARDS SP SW Board SECONDARY Board STANDBY Board PRIMARY Board See page 14 for Circuit Boards Location Page 16 Page 16 Page 16 Page 18 Page 16 Page 16 Page 17 ...

Page 12: ...34 for IC Block Diagram 19 20 Waveforms MAIN Board 1 IC1 OSCI 2 IC300 OSC1 Change DOLBY Mode 3 IC301 º LC INE 4 IC301 CR OT 2 7 Vp p 4 332 MHz 0 4 Vp p 32 5 µs 3 1 Vp p 125 ns 5 4 Vp p 4 19 MHz 1 2 Vp p 122 ns DISPLAY Board 1 IC201 X2 Page 32 Page 24 Page 21 ...

Page 13: ...STR DE235 21 22 4 8 SCHEMATIC DIAGRAM MAIN Board 2 4 SP SW Board Page 25 Page 20 ...

Page 14: ...STR DE235 23 24 4 9 SCHEMATIC DIAGRAM MAIN Board 3 4 See page 20 for Waveforms See page 33 for IC Block Diagrams Page 29 Page 32 Page 25 Page 19 ...

Page 15: ...STR DE235 25 26 4 10 SCHEMATIC DIAGRAM MAIN Board 4 4 SECONDARY Board STANDBY Board PRIMARY Board See page 35 for IC Block Diagram Page 24 Page 21 ...

Page 16: ...A 3 D203 A 3 D204 B 3 D223 B 7 D225 A 7 D231 B 3 D232 B 2 IC201 B 6 IC202 A 1 IC203 B 11 Q201 B 3 Q202 B 3 Q231 B 1 Q232 B 1 Page 16 Page 31 Page 28 Page 27 D228 A 1 D233 B 5 D234 A 4 D235 B 4 D236 B 6 D237 B 4 D240 C 1 D241 A 1 Semiconductor Location KEY Board Ref No Location Ref No Location Q233 A 6 Q234 A 4 Q235 B 3 Q236 C 6 Q237 A 4 Q239 A 6 Q241 B 1 Q242 A 1 ...

Page 17: ...STR DE235 29 30 4 12 SCHEMATIC DIAGRAM PANEL Section See page 20 for Waveform See page 35 for IC Block Diagram Page 23 Page 32 ...

Page 18: ...STR DE235 31 32 4 13 PRINTED WIRING BOARDS VOLUME Board TONE Board See page 14 for Circuit Boards Location 4 14 SCHEMATIC DIAGRAM VOLUME Board TONE Board Page 15 Page 15 Page 27 Page 29 Page 23 Page 19 ...

Page 19: ...UX V DDA V SSA CIN SCOUT 48 VCS2 VCS1 VCS TH L R RCT L R RCT DCUT DCUT R BPF3 R BPF2 R BPF1 CT OUT2 CT IN2 MIXOUT C OUT S OUT R OUT L OUT VCC CM CAP FCC IN2 ENABLE DATA CLK OSC1 NS BPF1 NS BPF2 VREF S DCUT C DCUT L DCUT R DCUT VREF BUF L IN R IN GND CT OUT1 CT IN1 FCC IN1 L BPF1 L BPF2 L BPF3 DCUT DCUT R RCT L RCT VLR TH VLR1 VLR2 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 L R REC...

Page 20: ...4 3 2 21 22 23 24 25 37 36 35 40 41 42 39 38 34 33 32 31 30 29 28 27 26 LS TRIM FILTER B NR VDD PCM DATA DECODER OSC PCM CONTROL 8K SRAM FILTER VOLUME FILTER R STEREO RS TRIM 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 2 3 5 4 6 7 9 8 1 MUTE VOUT1 ...

Page 21: ... NJM2103D 1 2 3 4 5 6 7 8 V VSB SESIN VSA RESET GND OUTC VSC CR VREF Q R S DISPLAY Board IC202 BA6208 1 2 3 4 5 6 7 8 9 NC OUTPUT 2 Vcc GND NC INPUT 2 INPUT 1 NC MOTOR DRIVE MOTOR DRIVE REG SWITCH SWITCH OUTPUT1 ...

Page 22: ... SP RLY O Speaker protect relay drive signal output for the front side speaker H relay on 22 SURR RLY O Speaker protect relay drive signal output for the surround speaker H relay on 23 POWER RLY O Relay drive signal output for the power on off control H relay on 24 SIGNAL I FM and AM signal meter voltage detection signal input from the FM AM tuner pack 25 A D 4 I Key input terminal A D input S234 ...

Page 23: ...ED drive signal output of the BASS BOOST indicator D228 H BASS BOOST on LED on 54 FUNC MUTE O Audio line muting on off control signal output terminal H muting on 55 IC MUTE O Muting on off control signal output terminal H muting on Not used open 56 VERSION I Setting terminal for the version 57 S2 O Video input select signal output terminal Not used pull down 58 S1 O Video input select signal outpu...

Page 24: ...e not supplied Hardware mark list and accessories and packing materials are given in the last of the electrical parts list NOTE XX and X mean standardized parts so they may have some difference from the original one Color Indication of Appearance Parts Example KNOB BALANCE WHITE RED Parts Color Cabinet s Color Ref No Part No Description Remark Ref No Part No Description Remark 1 X 4947 207 1 FOOT ...

Page 25: ...11 SP SW BOARD 59 4 951 620 01 SCREW 2 6X8 BVTP 60 1 673 051 11 POWER SWITCH BOARD 61 1 765 348 11 WIRE FLAT TYPE 27 CORE 62 A 4419 011 A DISPLAY BOARD COMPLETE 63 1 765 314 11 WIRE FLAT TYPE 7 CORE 64 1 769 941 11 WIRE FLAT TYPE 11 CORE 65 1 673 043 11 VOLUME BOARD 66 1 673 044 11 TONE BOARD 67 A 4419 013 A KEY BOARD COMPLETE 68 4 998 717 01 KNOB BAL 69 4 977 593 11 RING DIA 50 ORNAMENTAL 51 52 5...

Page 26: ...794 11 OUTLET AC AEP 109 4 216 800 01 BACK PANEL E25 AEP 109 4 216 800 21 BACK PANEL E25 UK 110 1 693 408 41 TUNER PACK 111 1 773 001 11 WIRE FLAT TYPE 15 CORE 112 A 4419 015 A MAIN BOARD COMPLETE 113 4 924 098 01 HOLDER PC BOARD 114 4 956 370 12 BAND PLUG FIXED UK T901 1 433 719 11 TRANSFORMER POWER The components identified by mark or dotted line with mark are critical for safety Replace only wi...

Page 27: ... 10K 5 1 4W R203 1 249 429 11 CARBON 10K 5 1 4W R204 1 249 425 11 CARBON 4 7K 5 1 4W R205 1 249 441 11 CARBON 100K 5 1 4W R206 1 249 433 11 CARBON 22K 5 1 4W R207 1 249 433 11 CARBON 22K 5 1 4W R216 1 249 433 11 CARBON 22K 5 1 4W R221 1 247 807 31 CARBON 100 5 1 4W R222 1 247 807 31 CARBON 100 5 1 4W R223 1 247 807 31 CARBON 100 5 1 4W R224 1 247 807 31 CARBON 100 5 1 4W R225 1 247 807 31 CARBON 1...

Page 28: ...1 4W R265 1 249 429 11 CARBON 10K 5 1 4W R266 1 249 411 11 CARBON 330 5 1 4W R267 1 249 413 11 CARBON 470 5 1 4W R268 1 249 415 11 CARBON 680 5 1 4W R269 1 249 417 11 CARBON 1K 5 1 4W R270 1 249 419 11 CARBON 1 5K 5 1 4W R271 1 249 421 11 CARBON 2 2K 5 1 4W R272 1 247 843 11 CARBON 3 3K 5 1 4W R273 1 249 425 11 CARBON 4 7K 5 1 4W R277 1 249 411 11 CARBON 330 5 1 4W R278 1 249 413 11 CARBON 470 5 1...

Page 29: ...65 00 FILM 0 1uF 5 50V C346 1 126 959 11 ELECT 0 47uF 20 50V C347 1 126 963 11 ELECT 4 7uF 20 50V C348 1 126 959 11 ELECT 0 47uF 20 50V C349 1 126 963 11 ELECT 4 7uF 20 50V C350 1 124 250 11 ELECT 0 15uF 20 50V C351 1 126 962 11 ELECT 3 3uF 20 50V C352 1 136 165 00 FILM 0 1uF 5 50V C353 1 137 358 11 FILM 100PF 5 50V C357 1 164 159 11 CERAMIC 0 1uF 50V C358 1 126 963 11 ELECT 4 7uF 20 50V C359 1 12...

Page 30: ...100PF 10 50V CC03 1 162 282 31 CERAMIC 100PF 10 50V CC04 1 162 282 31 CERAMIC 100PF 10 50V CC05 1 162 282 31 CERAMIC 100PF 10 50V CC06 1 162 282 31 CERAMIC 100PF 10 50V CC07 1 162 282 31 CERAMIC 100PF 10 50V CC12 1 164 096 11 CERAMIC 0 01uF 50V CC13 1 164 096 11 CERAMIC 0 01uF 50V CC52 1 162 282 31 CERAMIC 100PF 10 50V CC53 1 162 282 31 CERAMIC 100PF 10 50V CC54 1 162 282 31 CERAMIC 100PF 10 50V C...

Page 31: ...119 76 TRANSISTOR 2SA1175 HFE Q752 8 729 141 30 TRANSISTOR 2SC3623A LK Q753 8 749 010 25 IC MN2488 OPY M Q754 8 749 010 26 IC MP1620 OPY M Q770 8 729 140 82 TRANSISTOR 2SA988 PAFAEA Q801 8 729 140 97 TRANSISTOR 2SB734 34 Q802 8 729 119 78 TRANSISTOR 2SC403SP 51 Q809 8 729 119 78 TRANSISTOR 2SC403SP 51 Q951 8 729 026 68 TRANSISTOR 2SD2525 TP RESISTOR R5 1 249 421 11 CARBON 2 2K 5 1 4W R6 1 247 807 ...

Page 32: ...5 1 4W R706 1 249 435 11 CARBON 33K 5 1 4W R707 1 249 435 11 CARBON 33K 5 1 4W R710 1 249 421 11 CARBON 2 2K 5 1 4W R711 1 249 440 11 CARBON 82K 5 1 4W R713 1 249 414 11 CARBON 560 5 1 4W R714 1 249 409 11 CARBON 220 5 1 4W F R715 1 249 409 11 CARBON 220 5 1 4W F R716 1 233 352 41 ENCAPSULATED COMPONENT 0 22 0 22 R717 1 249 393 11 CARBON 10 5 1 4W F R718 1 249 389 11 CARBON 4 7 5 1 4W R719 1 249 4...

Page 33: ... 11 CARBON 1 5 1 4W F 1 673 045 11 SP SW BOARD CONNECTOR CNP703 1 691 767 11 PLUG MICRO CONNECTOR 5P CNP704 1 691 765 11 PLUG MICRO CONNECTOR 3P JACK J741 1 750 733 11 JACK LARGE TYPE PHONES RESISTOR R741 1 247 753 11 CARBON 1 2K 5 1 2W R742 1 247 753 11 CARBON 1 2K 5 1 2W R791 1 247 753 11 CARBON 1 2K 5 1 2W R792 1 247 753 11 CARBON 1 2K 5 1 2W SWITCH S701 1 771 634 11 SWITCH PUSH 2 KEY SPEAKERS ...

Page 34: ...568 850 11 CONNECTOR FFC 7P CNS403 1 784 733 11 CONNECTOR FFC 11P IC IC404 8 759 636 74 IC M5218AP 22 RESISTOR R425 1 249 429 11 CARBON 10K 5 1 4W R426 1 249 439 11 CARBON 68K 5 1 4W R427 1 249 417 11 CARBON 1K 5 1 4W R430 1 249 437 11 CARBON 47K 5 1 4W R475 1 249 429 11 CARBON 10K 5 1 4W R476 1 249 439 11 CARBON 68K 5 1 4W R477 1 249 417 11 CARBON 1K 5 1 4W R480 1 249 437 11 CARBON 47K 5 1 4W VAR...

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