Sony-STRDE485-rec-sm维修电路原理图.pdf

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1、1 SERVICE MANUALUS Model Canadian Model E Model Australian Model Chinese Model STR-DE485 AEP Model UK Model STR-DE485E STR-DE485/DE485E FM STEREO/FM-AM RECEIVER AUDIO POWER SPECIFICATIONS POWER OUTPUT AND TOTAL HARMONIC DISTORTION: With 8 ohm loads, both channels driven, from 40 20,000 Hz; rated 80

2、watts per channel minimum RMS power, with no more than 0.09 % total harmonic distortion from 250 milliwatts to rated output (STR-DE485 area code US only). Amplifier section POWER OUTPUT Models of area code US, CND Rated Power Output at Stereo Mode (8 ohms 40 Hz 20 kHz, THD 0.09 %) STR-DE485:80 W + 8

3、0 W Reference Power Output (8 ohms 1 kHz, THD 0.7 %) STR-DE485:FRONT 1) : 80 W/ch CENTER 1) : 80 W SURR 1) : 80 W/ch Models of area code AEP, UK Rated Power Output at Stereo Mode (8 ohms 1 kHz, THD 0.7 %) STR-DE485E80 W + 80 W 2) Reference Power Output (8 ohms 1 kHz, THD 0.7 %) STR-DE485EFRONT 1) :

4、80 W/ch CENTER 1) : 80 W SURR 1) : 80 W/ch SPECIFICATIONS Models of other area code Rated Power Output at Stereo Mode (8 ohms 1 kHz, THD 0.7 %) 80 W + 80 W 2) Reference Power Output 2) (8 ohms 1 kHz, THD 10 %) FRONT 1) : 100 W/ch CENTER 1) : 100 W SURR 1) : 100 W/ch 1) Depending on the sound field s

5、ettings and the source, there may be no sound output. 2) Measured under the following conditions: Area codePower requirements E, AUS240 V AC, 50 Hz SP, AEP, UK230 V AC, 50 Hz TW110 V AC, 60 Hz MX120 V AC, 60 Hz Frequency response MULTI CH IN10 Hz 50 kHz (STR-DE485 only), CD,+0.5/2 dB (with sound MD/

6、TAPE, DVD/LD,field, and tone bypassed) VIDEO 1, 2 Inputs (Analog) MULTI CH INSensitivity: 250 mV (STR-DE485 only), CD,Impedance: 50 kilohms MD/TAPE, DVD/LD,S/N 3) : 96 dB VIDEO 1, 2(A, 250 mV 4) ) 3) INPUT SHORT (with sound field and tone bypassed). 4) Weighted network, input level. Ver 1.1 2003. 07

7、 9-873-587-02 2003G04-1 2003.07 Sony Corporation Home Audio Company Published by Sony Engineering Corporation Photo: STR-DE485 Manufactured under license from Dolby Laboratories. “Dolby”, “Pro Logic” and the double-D symbol are trademarks of Dolby Laboratories. “DTS” and “DTS Digital Surround” are r

8、egistered trademarks of Digital Theater Systems, Inc. Continued on next page RadioFans.CN 收音机爱 好者资料库 2 STR-DE485/DE485E Inputs (Digital) DVD/LD (Coaxial)Sensitivity: Impedance: 75 ohms S/N: 100 dB (A, 20 kHz LPF) VIDEO 2 (Optical)Sensitivity: Impedance: S/N: 100 dB (A, 20 kHz LPF) Outputs MD/TAPE (R

9、ECVoltage: 250 mV OUT), VIDEO1Impedance: 10 kilohms (AUDIO OUT) SUB WOOFERVoltage: 2 V Impedance: 1 kilohms Tone Gain levels:6 dB, 1 dB step FM tuner section Tuning range87.5 - 108.0 MHz Antenna terminals75 ohms, unbalanced Intermediate Frequency10.7 MHz Sensitivity Mono:18.3 dBf, 2.2 V/75 ohms Ster

10、eo:38.3 dBf, 22.5 V/75 ohms Usable sensitivity11.2 dBf, 1 V/75 ohms S/N Mono:76 dB Stereo:70 dB Harmonic distortion at 1 kHz Mono:0.3% Stereo:0.5% Separation45 dB at 1 kHz Frequency response30 Hz 15 kHz, +0.5/2 dB Selectivity60 dB at 400 kHz AM tuner section Tuning range Models of area code US, CND

11、With 10-kHz tuning scale: 530 1710 kHz 5) With 9-kHz tuning scale:531 1710 kHz 5) Models of area code E2, MX With 10-kHz tuning scale: 530 1610 kHz 5) With 9-kHz tuning scale:531 1602 kHz 5) Models of area code AUS, SP, AEP, UK, TW With 9-kHz tuning scale:531 1602 kHz AntennaLoop antenna Intermediat

12、e Frequency450 kHz Usable sensitivity50 dB/m (at 1,000 kHz or 999 kHz) S/N54 dB (at 50 mV/m) Harmonic distortion0.5 % (50 mV/m, 400 Hz) Selectivity At 9 kHz:35 dB At 10 kHz:40 dB 5) You can change the AM tuning scale to 9 kHz or 10 kHz. After tuning in any AM station, turn off the receiver. Hold dow

13、n PRESET TUNING + and press ?/1 . All preset stations will be erased when you change the tuning scale. To reset the scale to 10 kHz (or 9 kHz), repeat the procedure. Video section Inputs Video:1 Vp-p, 75 ohms Outputs Video:1 Vp-p, 75 ohms General Power requirements Area codePower requirements US, CN

14、D, MX120 V AC, 60 Hz AEP, UK230 V AC, 50/60 Hz SP220 230 V AC, 50/60 Hz E120/220/240 V AC, 50/60 Hz TW110 V AC, 50/60 Hz AUS240 V AC, 50Hz Power consumption Area codePower consumption US, MXSTR-DE485: 180 W CNDSTR-DE485: 260 VA AEP, UKSTR-DE485E: 155 W AUS, SP, ESTR-DE485: 155 W TWSTR-DE485: 400 W P

15、ower consumption (during standby mode) 0.5 W Dimensions430 145 298 mm (16 7/8 5 6/8 11 6/8 in.) including projecting parts and controls Mass (Approx.)7.0 kg (15lb 7 oz) Supplied accessories FM wire antenna (1) AM loop antenna (1) STR-DE485E/DE485 only Remote commander RM-U306 (1) R6 (size-AA) batter

16、ies (2) Design and specifications are subject to change without notice. Abbreviation CND: Canadian model AR: Argentina model AUS: Australian model CH: Chinese model MX: Mexican model SP: Singapore model TW: Taiwan model RadioFans.CN 收音机爱 好者资料库 3 STR-DE485/DE485E MODEL IDENTIFICATION BACK PANEL Part

17、No. MODELPART No. US4-238-188-0s Canadian4-238-188-1s Australian4-238-188-2s Singapore4-238-188-3s Chinese4-238-188-4s E4-238-188-5s AEP4-238-188-6s UK4-238-188-7s Mexican4-238-188-8s Argentina4-238-188-9s Taiwan4-238-189-9s 1.5 k0.15 F AC voltmeter (0.75 V) To Exposed Metal Parts on Set Earth Groun

18、d SAFETY CHECK-OUT After correcting the original service problem, perform the follow- ing safety check before releasing the set to the customer: Check the antenna terminals, metal trim, “metallized” knobs, screws, and all other exposed metal parts for AC leakage. Check leakage as described below. LE

19、AKAGE TEST The AC leakage from any exposed metal part to earth ground and from all exposed metal parts to any exposed metal part having a return to chassis, must not exceed 0.5 mA (500 microampers.). Leakage current can be measured by any one of three methods. 1.A commercial leakage tester, such as

20、the Simpson 229 or RCA WT-540A. Follow the manufacturers instructions to use these instruments. 2.A battery-operated AC milliammeter. 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-operated AC voltmeter.

21、 The “limit” indica- tion is 0.75 V, so analog meters must have an accurate low- voltage scale. The Simpson 250 and Sanwa SH-63Trd are ex- amples of a passive VOM that is suitable. Nearly all battery operated digital multimeters that have a 2 V AC range are suit- able. (See Fig. A) SAFETY-RELATED CO

22、MPONENT WARNING! COMPONENTS 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 PUBLISHED BY SONY. ATTENTION AU COM

23、POSANT AYANT RAPPORT LA SCURIT! LES COMPOSANTS IDENTIFIS PAR UNE MARQUE 0 SUR LES DIAGRAMMES SCHMATIQUES ET LA LISTE DES PICES SONT CRITIQUES POUR LA SCURIT DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PICES SONY DONT LES NUMROS SONT DONNS DANS CE MANUEL OU DANS LES SUPPLMENTS PUBLIS P

24、AR SONY. 4 TABLE OF CONTENTS 1. GENERAL Main unit . 5 Remote button description. 6 2. DISASSEMBLY 2-1. Case . 7 2-2. Front Panel Section . 8 2-3. Back Panel. 8 2-4. Digital Board. 9 2-5. Standby Board . 9 2-6. Main Board .10 3. TEST MODE. 11 4. DIAGRAMS 4-1. IC Pin Description. 12 4-2. Circuit Board

25、s Location . 15 4-3. Block Diagram Tuner/Audio Section . 16 4-4. Block Diagram Digital Section .17 4-5. Block Diagram Video/Display Section .18 4-6. Block Diagram Power Section . 19 4-7. Printed Wiring Boards Main Section . 21 4-8. Schematic Diagram Main Section (1/2) . 22 4-9. Schematic Diagram Mai

26、n Section (2/2) . 23 4-10. Printed Wiring Board Digital Section (1/2) . 24 4-11. Printed Wiring Board Digital Section (2/2) . 25 4-12. Schematic Diagram Digital Section (1/2) .26 4-13. Schematic Diagram Digital Section (2/2) .27 4-14. Printed Wiring Board Video Section .28 4-15. Schematic Diagram Vi

27、deo Section . 29 4-16. Printed Wiring Boards Display Section . 30 4-17. Schematic Diagram Display Section .31 4-18. Printed Wiring Boards Power Section . 32 4-19. Schematic Diagram Power Section . 33 4-20. IC Block Diagrams. 34 5. EXPLODED VIEWS 5-1. Case Section . 35 5-2. Front Panel Section .36 5-

28、3. Chassis Section-1 . 37 5-4. Chassis Section-2 . 38 6. ELECTRICAL PARTS LIST. 39 STR-DE485/DE485E 5 STR-DE485/DE485E SECTION 1 GENERALThis section is extracted from instruction manual. List of Button Locations and Reference Pages 5GB wdwfwhwjwkwlesedefegehekeje; eawg 1784qs0qa52 36qfqgqjqhqkqlw;qd

29、waws9 List of Button Locations and Reference Pages Main unit How to use this page Use this page to find the location of buttons that are mentioned in the text. FM MODE (Models of area code CEL, CEK only) ed, (Except for models of area code CEL, CEK) ef (31) INPUT MODE qg (21) IR (receptor) 4 (38, 45

30、, 51) LEVEL 0 (20, 27, 55) M MASTER VOLUME wd (20, 49) MD/TAPE qj (21) MEMORY eh (30, 32) MENU +/ e; (16, 27, 35, 36) MENU ea (16, 27, 35, 36) MODE wj (24, 50) MULTI CHANNEL DECODING (indicator) (Except for STR-DE485E) 7 (21) MULTI CH IN (Except for STR-DE485E) qf (21) MUTING wf (21, 49) N S NAME 8

31、(35) PHONES (jack) ek (21) PRESET/PTY SELECT +/ (Models of area code CEL, CEK only) 3 (32, 33) PRESET TUNING +/ (Except for models of area code CEL, CEK) 3 (32, 53) PTY (Models of area code CEL, CEK only) ef (33) SET UP 6 (4, 16, 36, 54) SHIFT eg (32) SLEEP (STR-DE485E only)qf (36) SURR qd (27, 54)

32、T Z TREBLE +/ qh (29, 54) TUNER ws (21, 30-32, 35) TUNING +/ 5 (31) VIDEO 1 qk (21) VIDEO 2 w; (21) BUTTON DESCRIPTIONS /1 (power) 1 (4, 15, 20, 29, 30, 53) ALPHABETICAL ORDER 0 9 2 CH wh (25) A D A.DEC wk (2325) AM (Except for models of area code CEL, CEK) es (30, 31) BASS +/ wg (29, 54) CD ql (21)

33、 CINEMA STUDIO EX A, B, C 9 (23, 24) Digital Cinema Sound (indicator) qs (23) DIMMER ej (22) DISPLAY 2 (22, 33, 51) Display qa (22) DVD/LD wa (21) E L ENTER wl (35) FM (Except for models of area code CEL, CEK) ed (30, 31) FM/AM (Models of area code CEL, CEK only) es (30, 31) Illustration number r NA

34、ME 8 (35) RR Name of button/partReference page 6 STR-DE485/DE485E Operations Using the Remote RM-U306 45GB Except for STR-DE585 area code CA You can use the remote RM-U306 to operate the components in your system. Remote button description NX mM . 123 456 78 0 9 MD/TAPECDTUNER TV/VIDEO VIDEO 2VIDEO

35、1DVD/LD SYSTEM STANDBY 10 SHIFT CH/PRESET - ANT TV/VTR SOUND FIELD + MASTER VOL TEST TONEMAIN MENUMULTI CH ENTER D.SKIP A.DEC2CHMODE D.TUNING TOP MENUDVD MENU ENTER RETURN f F G g f F G g SLEEP AV ?/1 ?/1 MENU TV VOLTV CH MUTING O x Operations Using the Remote RM-U306 continued The tables below show

36、 the settings of each button. RemoteOperationsFunction Button SLEEPReceiverActivates the sleep function and the duration which the receiver turns off automatically. ?/1ReceiverTurns the receiver on or off. 46GB Remote button description (continued) RemoteOperationsFunction Button VIDEO 1ReceiverTo w

37、atch VCR. (VTR mode 3) VIDEO 2ReceiverTo watch VCR. (VTR mode 1) DVD/LDReceiverTo watch DVD or laser disc. MD/TAPE ReceiverTo listen to Minidisc or audio tape. CDReceiverTo listen to compact disc. TUNERReceiverTo listen to radio programs. SHIFTReceiverPress repeatedly to select a memory page for pre

38、setting radio stations or tuning to preset stations. D.TUNINGReceiverTuner station direct key- in-mode. A.DECReceiverSelect AUTO DECODE mode. MODEReceiverSelects sound field mode. 2CHReceiverSelects 2CH mode. TESTReceiverPress to output test tone. TONE MAINReceiverPress this button MENUrepeatedly to

39、 select one of the four cursor modes: SURR, LEVEL, SET UP and NAME. MULTI CHReceiverSelects MULTI CH IN source. MENU ReceiverSelects a menu item. MENU +/ ReceiverMakes adjustment or change the setting. MUTINGReceiverMutes the sound from the receiver. 7 STR-DE485/DE485E Note : This set can be disasse

40、mble according to the following sequence. SECTION 2 DISASSEMBLY 2-1. CASE 2-1.CASE (Page 7) 2-2.FRONT PANEL SECTION (Page 8) 2-3.BACK PANEL (Page 8) SET 2-4.DIGITAL BOARD (Page 9) 2-5.STANDBY BOARD (Page 9) 2-6.MAIN BOARD (Page 10) Note : Follow the disassembly procedure in the numerical order given

41、. 1two screws (case 3 TP2) 2two screws (case 3 TP2) 3two screws (case 3 TP2) 4case 8 STR-DE485/DE485E 2-2. FRONT PANEL SECTION 2-3. BACK PANEL 5front panel section 3two screws (BVTP3 x 8) 1CNS4 2CNP791 4four screws (BVTP3 x 8) 1CNS7 2CNS8 3CNP901 4CNP154 5two screws (BVTP3 x 8) 8two screws (BVTP3 x

42、8) 7two screws (BVTP3 x 8) 6five screws (BVTP3 x 8) 9 screw (BVTP3 x 8) 0 screw (BVTP3 x 8) qa screw (BVTP3 x 8) qs screw (BVTP3 x 8) qd back panel (HT4) 9 STR-DE485/DE485E 2-4. DIGITAL BOARD 1CNS4 5CNS1 6CNS2 2CNP6 3CNP5 8 screw (BVTP3 x 8) 9 bracket (digital) 7 DIGITAL board 4 screw (BVTP3 x 8) 5S

43、TANDBY board 1CNP915 2CNP902 3CNP903 4 three screws (BVTP3 x 8) 2-5. STANDBY BOARD 10 STR-DE485/DE485E 7MAIN board 1CNP801 2CNP802 5screw (BVTP3 x 8) 3two screws (BVTP3 x 8) 4two screws (BVTP3 x 8) 6two screws (BVTP3 x 8) 2-6. MAIN BOARD 11 STR-DE485/DE485E SOFTWARE VERSION DISPLAY MODE * The softwa

44、re version is displayed. * Procedure: While depressing the ENTER and the SOUND FIELD A.F.D. buttons simultaneously, press the power ?/1 button to turn on the main power. The model name, destination and the software version are displayed. FLUORESCENT INDICATOR TUBE TEST MODE * All fluorescent segments are tested. When this test is activated, all segments turn on at the same time, then each segment turns on one after another. * Procedure: While depressing the MD/TAPE and the SHIFT buttons simul- tane