SONY mdx_c5970 维修电路图.pdf

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1、MICROFILM SERVICE MANUALGerman Model MDX-C5960R US Model Canadian Model E Model MDX-C5970 AEP Model UK Model MDX-C5970R SPECIFICATIONS MDX-C5960R/C5970/C5970R Photo: MDX-C5960R Model Name Using Similar MechanismMDX-C7900/C7900R Base Mechanism TypeMG-164N-138 Optical Pick-Up NameKMS-241B/J1NP FM/AM (

2、MW/LW) MINIDISC PLAYER Continued on next page 收音机爱好者资料库 Ra d i o Fa n s .CN 2 Notes on chip component replacement Never reuse a disconnected chip component. Notice that the minus side of a tantalum capacitor may be dam- aged by heat. Flexible Circuit Board Repairing Keep the temperature of the solde

3、ring iron around 270 C dur- ing repairing. Do not touch the soldering iron on the same conductor of the circuit board (within 3 times). Be careful not to apply force on the conductor when soldering or unsoldering. NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT SAFETY-RELATED COMPONENT WARN

4、ING! COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! 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. CAUTION Use of controls or

5、 adjustments or performance of procedures other than those specified herein may result in hazardous ra- diation exposure. The laser diode in the optical pick-up block may suffer electro- static break-down because of the potential difference generated by the charged electrostatic load, etc. on clothi

6、ng and the human body. During repair, pay attention to electrostatic break-down and also use the procedure in the printed matter which is included in the repair parts. The flexible board is easily damaged and should be handled with care. NOTES ON LASER DIODE EMISSION CHECK Never look into the laser

7、diode emission from right avove when checking it for adustment. It is feared that you will lose your sight. NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK (KMS-241B/J1NP). The laser diode in the optical pick-up block may suffer electro- static break-down easily. When handling it, perform soldering brid

8、ge to the laser-tap on the flexible board. Also perform m easures against electrostatic break-down sufficiently before the operation. The flexible board is easily damaged and should be handled with care. laser-tap OPTICAL PICK-UP FLEXIBLE BOARD ATTENTION AU COMPOSANT AYANT RAPPORT LA SCURIT! LES COM

9、POSANTS IDENTIFIS PAR UNE MARQUE ! SUR LES DIAGRAMMES SCHMATIQUES ET LA LISTE DES PICES SONT CRITIQUES POUR LA SCURIT DE FONCTIONNEMENT. NE REMPLACER CES COM- POSANTS QUE PAR DES PICES SONY DONT LES NUMROS SONT DONNS DANS CE MANUEL OU DANS LES SUPPLMENTS PUBLIS PAR SONY. 收音机爱好者资料库 Ra d i o Fa n s .C

10、N 3 1.GENERAL Location of controls .4 Resetting the unit .5 Detaching the front panel.5 Labelling the rotary commander.5 Using the rotary commander .5 Adjusting the sound characterisitics.5 Attenuating the sound .5 Changing the sound and display settings .5 Boosting the bass sound.5 Installation.6 C

11、onnections.7 2.DISASSEMBLY. 10 3.ELECTRICAL ADJUSTMENTS. 16 Test Mode . 16 MD Section . 16 Tuner Section . 16 4.DIAGRAMS 4-1.Block Diagram SERVO Section . 19 4-2.Block Diagram TUNER Section . 21 4-3.Block Diagram MAIN Section . 23 4-4.Block Diagram DISPLAY/KEY CONTROL Section . 25 4-5.Block Diagram

12、BUS CONTROL/ POWER SUPPLY Section . 27 4-6.Notes for Printed Wiring Boards and Schematic Diagrams . 29 4-7.Printed Wiring Board SERVO Board . 31 4-8.Schematic Diagram SERVO Board (1/3) . 33 4-9.Schematic Diagram SERVO Board (2/3) . 35 4-10. Schematic Diagram SERVO Board (3/3) . 37 4-11. Printed Wiri

13、ng Board MAIN Board (Component Side) . 39 4-12. Printed Wiring Board MAIN Board (Conductor Side) . 41 4-13. Schematic Diagram MAIN Board (1/4) . 43 4-14. Schematic Diagram MAIN Board (2/4) . 45 4-15. Schematic Diagram MAIN Board (3/4) . 47 4-16. Schematic Diagram MAIN Board (4/4) . 49 4-17. Printed

14、Wiring Board KEY Board . 51 4-18. Schematic Diagram KEY Board . 53 4-19. IC Pin Function Description . 62 5.EXPLODED VIEWS. 72 6.ELECTRICAL PARTS LIST. 76 TABLE OF CONTENTS 收音机爱好者资料库 Ra d i o Fa n s .CN 4 SECTION 1 GENERAL This section is extracted from instruction manual. 5 6 7 8 9 10 SECTION 2 DIS

15、ASSEMBLY SUB PANEL Note: Follow the disassembly procedure in the numerical order given. 1five screws (PTT2.6 6) 1screw (PTT2.6 6) 2sub panel MECHANISM DECK (MG-164N-138) 1two screws (PTT2.6 4) 3mechanism deck (MG-164N-138) 2connector (CN200) 11 MAIN BOARD, HEAT SINK SERVO BOARD 4insulating sheet 3ma

16、in board 2three screws (PTT2.6 6) (ground point) 1two screws (PTT2.6 10) 6heat sink 5eight screws (PTT2.6 10) 2two screws (BVTT2 4) 1sensor flexible board (CN102) 2two screws (BVTT2 4) 1flexible board (CN103) 3servo board 12 1tension spring (FL2) 1tension spring (FL2) 2two tension springs (FLOAT F)

17、3Pushing an arrow A part, raise the float block up ward at the front to release a lock. A float block lever (lock R) lever (lock L) MD COVER ASSY FLOAT BLOCK 1four screws (B2 3) 3MD cover assy 2Pushing the Cassette Holder toward the direction A with a screwdriver, etc., disengage the Shaft (MD Cover

18、 Guide) from the slot in the MD Cover Assy. Note:Take care not to scratch the optiocal Pick-up when pushing the Cassette Holder with a screwdriver. etc. shaft (MD cover guide) cassette holder A 13 LO MOTOR ASSY (LOADING) (M903) LEVER (LE) ASSY 4Remove the bracket (LO) in the direction of the arrow A

19、. 1Remove solders of motor (M903) 5LO motor assy (loading) (M903) 2tension spring (rack) 3claw A 2stopper washer 2lever (LE) assy 3roller (GLE) 1 14 HOLDER ASSY CHUCKING ARM ASSY 1Remove the chucking arm assy in the direction of the arrow. holder assy 2type-E stopring 1.5 2type-E stopring 1.5 3lever

20、 (lock L) 2type-E stopring 1.5 2type-E stopring 1.5 4Remove the holder assy in the direction of the arrow. 1spring (CHKG) 1spring (CHKG) 3lever (lock R) 15 OPTICAL PICK-UP (KMS-241B/J1NP) SL MOTOR ASSY (SLED) (M902), SP MOTOR ASSY (SPINDLE) (M901) 6bearing (SL) 5feed screw assy 3screw (K2 3) 2shaft

21、(SL2) 1two screws (K2 3) 7optical pick-up (KMS-241B/J1NP) 4screw (B2 3) 4screw (P1.7 1.8) 5bracket (SL) 9two screws (P1.7 1.8) !retainer (SP) !SP motor assy (spindle) (M901) 7screw (B2 3) 2two screws (2 8) 3sensor board 1Remove solders of motors (M901, M902) 8base (SL) 6SL motor assy (sled) (M902) 1

22、6 SECTION 3 ELECTRICAL ADJUSTMENTS TEST MODE This set have the test mode function. In the test mode, FM Auto Scan/Stop Level and AM (MW) Auto Scan/Stop Level adjustments can be performed easier than it in ordinary procedure. 1.Turn ON the regulated power supply. (The clock is displayed) Note: Press

23、theOFFbutton, if the clock is not displayed. 2.Push the preset 4 button. 3.Push the preset5button. 4.Press the preset1button for more than two seconds. 5.Then the display indicates all lights, the test mode is set. 1.Push the OFF button. MD SECTION MD section adjustments are done automatically in th

24、is set. TUNER SECTION Note: Adjust the tuner section in the sequence shown below. 1.FM Auto Scan/Stop Level Adjustment. 2.FM Stereo Separation Adjustmnet. 3.AM (MW) Auto Scan/Stop Level Adjustment. 4.RDS S-Meter Adjustment. (MDX-C5960R/5970R) FM Auto Scan/Stop Level Adjustment Setting: SOURCE button

25、: FM FREQUENCY SELECT switch: FM 200 k (E model) Procedure: 1.Set to the test mode. 2.Push the SOURCE button and set to FM. Display 0 dB=1 V See the adjustment location from on page 18 for the ad- justment. Cautions during repair When the tuner unit is defective, replace it by a new one be- cause it

26、s internal block is difficult to repair. 3.Adjust with the volume RV2 on TU1 so that the “FM” indica- tion turns to “FM0” indication on the display window. But, in case of already indicated “FM0”, turn the RV2 so that put out light “0” indication and adjustment. Display *1: MDX-C5960R/C5970R indicat

27、e “98.00”. Adjustment Location: See page 18. FM Stereo Separation Adjustment Setting: SOURCE button: FM FREQUENCY SELECT switch: FM 200 k (E model) Procedure: L-CH Stereo separation: A-B R-CH Stereo separation: C-D The separations of both channels should be equal. Specification: Separation more than

28、 30 dB Adjustment Location: See page 18. FM RF signal generator Carrier frequency: 97.9 MHz (MDX-C5970) 98.0 MHz (MDX-C5960R/C5970R) Output level: 22 dB (12.6 V) Mode: mono Modulation: 1 kHz, 22.5 kHz deviation (30%) 0.01 F set antenna jack (J1) FM RF signal generator 0.01 F set antenna jack (J1) +

29、LINE OUT jack (CNP300) level meter 10 k MDX-C5970 MDX-C5960R/ C5970R Carrier frequency97.9 MHz98.0 MHz Output level60 dB (1 mV)70 dB (3.2 mV) Modestereostereo main 1 kHz, 33.75 kHz1 kHz, 16.25 kHz deviation (45%)deviation (21.7%) Modulationsub 1 kHz, 33.75 kHz1 kHz, 16.25 kHz deviation (45%)deviatio

30、n (21.7%) 19 kHz7.5 kHz7.5 kHz pilotdeviation (10%)deviation (10%) FM Stereo Level meterLevel meter signal generator connectionreading (dB) output channel L-CHL-CHA B R-CHL-CHAdjust RV4 on TU1 for minimum reading. R-CHR-CHC D L-CHR-CHAdjust RV4 on TU1 for minimum reading. SHUF *1 SHUF *1 17 18 RDS S

31、-Meter Adjustment (MDX-C5960R/C5970R) Setting: SOURCE button: FM Procedure: 1.Set to the test mode. (See page 16) 2.Push the SOURCE button and set to FM. Display 3.Push the preset 10 button. 4.Adjust RV1 on MAIN board so that the display indication is “11.2”. Display Specification: Display indicatio

32、n : 10.8 to 11.6 Adjustment Location: See page 18. AM (MW) Auto Scan/Stop Level Adjustment Setting: MODE button (MDX-C5970): AM MODE button (MDX-C5960R/C5970R): MW FREQUENCY SELECT switch: AM 10 k (E model) Procedure: 1.Set to the test mode. (See page 16) 2.Push the SOURCE button and set to FM. 3.Pu

33、sh the MODE button and set to AM (MDX-C5970) or MW (MDX-C5960R/C5970R). Display 4.Adjust with the volume RV1 on TU1 so that the “AM” or “MW” indication turns to “AM0” or “MW0” indication on the dis- play window. But, in case of already indicated “AM0” or “MW0”, turn the RV1 so that put out light “0”

34、 indication and adjustment. Display *2: MDX-C5960R/C5970R indicate “MW”. *3: MDX-C5960R/C5970R indicate “999”. *4: Only MDX-C5960R/C5970R indicate. Adjustment Location: See page 18. AM RF signal generator Carrier frequency: 1000 kHz (MDX-C5970) 999 kHz (MDX-C5960R/5970R) 30% amplitude modulation by

35、1 kHz signal Output level: 33 dB (44.7 V) set AM dummy antenna (50 ) 30 15 pF 65 pF antenna jack (J1) FM RF signal generator Carrier frequency: 98.0 MHz Output level: 35 dB (56.2 V) Mode: mono Modulation: no modulation 0.01 F set antenna jack (J1) Adjustment Location: SET UPPER VIEW SHUF TP *3 *2 *4

36、 SHUF TP *3 *2 *4 SHUF SHUF RV1 RDS S-Meter Adjustment (MDX-C5960R/C5970R) TU1 RV1 AM (MW) Auto Scan/Stop Level Adjustment RV2 FM Auto Scan/Stop Level Adjustment RV4 FM Sereo Separation Adjustment MDX-C5960R/C5970/C5970R 19 20 SECTION 4 DIAGRAMS 4-1.BLOCK DIAGRAM SERVO Section F CB DA E IJ J I B A C

37、 D E F DETECTOR 1 2 J I 4 5 6 7 A B C D 8 9 E F LDPD LASER DIODE ILCC PD OPTICAL PICK-UP (KMS-241B/J1NP) AUTOMATIC POWER CONTROL Q302 11 10 APC PD LD/PD AMP 12 APCREF I-V AMP I-V AMP AT AMP B.P.F.2930 WBL ADFMADIN 32 ADFG ABCD AMP FOCUS ERROR AMP TRACKING ERROR AMP 35 34 26 28 ABCD FE TE SE V-I CONV

38、ERTER 20 F0CNT WBL 3T EQ +3.3V SERIAL/ PARALLEL CONVERTER, DECODER COMMAND 171618 SWDT SCLK XLAT RF AMP B.P.F. 46 RFO 40 RF AGC & EQ AGCI EQ 38 RF RF AMP, FOCUS/TRACKING ERROR AMP IC302 TEMP 4847 MORFO MORFI 3T PEAK & BOTTOM WBL 33 AUX 73 62 37 PEAK 36 BOTM FOCUS/TRACKING COIL DRIVE, SPINDLE/SLED MO

39、TOR DRIVE IC303 6 8 OUT4F OUT4R M M901 (SPINDLE) 27 25 OUT2F OUT2R M M902 (SLED) 21 23 OUT1F OUT1R 12 10 OUT3F OUT3R FCS+ FCS TRK+ TRK 2-AXIS DEVICE (TRACKING) (FOCUS) 3 4 IN4R IN4F 29 30 IN2F IN2R 19 18 IN1F IN1R 14 15 IN3F IN3R SPFD SPRD IC306 92 91 88 89 86 85 83 APCREF SFDR SRDR FFDR FRDR TFDR T

40、RDR 16PSB PWM GENERATOR AUTOMATIC POWER CONTROL DIGITAL SERVO SIGNAL PROCESS 746564756663 ANALOG MUX A/D CONVERTER AUTO SEQUENCER 13 FROM CPU INTERFACE DIGITAL SERVO SIGNAL PROCESSOR IC301 (2/2) RECP PEAK HOLD Q301 +3.3V ABCD AUX1 AUX2 ABCD FE TE SE PEAK BOTM 81 80 82 XLRF CKRF DTRF EFM/ACIRC ENCODE

41、R/DECODER SHOCK PROOF MEMORY CONTROLLER ATRAC ENCODER/DECODER PLL FILTER 59 58 61 60 FILI PCO CLTV FILO 100 EFMO 23 ADDT IC301 (1/2) 15 TX COMPA- RATOR 51 52 55 ASYO ASYI RFI ADIP DEMODULATOR/ DECODER 78 ADFG SPINDLE SERVO 79 F0CNT 94 93 SPFD SPRD SUBCODE PROCESSOR 24 SAMPLING RATE CONVERTER DIGITAL

42、 AUDIO INTERFACE 22 21 DIN DOUT DIGITAL SIGNAL PROCESSOR, EFM/ACIRC ENCODER/DECODER, SHOCK PROOF MEMORY CONTROLLER, ATRAC ENCODER/DECODER, 2M BIT D-RAM IC301 (1/2) DADT INTERNAL BUS D-RAM CLOCK GENERATOR 252627 512FS OSC IC304 XBCK LRCK FS256 BCK LRCK FS256 X301 22.5792MHz 16 OSCI 17 OSCO CPU INTERF

43、ACE MONITOR CONTROL 10 XRST 12 DQSY 11 SQSY 14 XINT 98567 SENS SRDT SWDT SCLK XLAT LEVEL SHIFT IC502 51331 61242 LEVEL SHIFT IC503 1234 MNT0 MNT1 MNT2 MNT3 13 1 3 5 12 2 4 6 FOK SHOCK XBUSY SLOCK SWDT SCLK XLAT 59625554 5245 51 6426 27 28 29 MNT0 MNT1 MNT2 MNT3 67A-MUTE 21LOCK 39 TEMP MD-RST SQSY CC

44、-XINT SENS MD-SI MD-SO MD-CKO MD-LAT 76 EJECT LOAD 54 05 17 M RINFIN OUT1 OUT2 LOADING MOTOR DRIVE IC305 M903 (LOADING) 63 C-SW LOADING START/ EJECT END E-SW LIMIT-IN (LIMIT) LOADING END ON:When the disc loading start and the disc eject completion. ON:When completion of the disc loading. ON:When the optical pick-up is inner position. 31 32 EXTAL XTAL X501 10MHz TH501 66 DEEMP 47, 46, 48, 49 1, 2, 24, 25 D0 D3 32 29, 34 38, 43 9 12, 14 18, 5 A0 A9 D0 D3A00 A09 4122 453 444 4223 XOE XWE XRAS XCAS OE WE RAS CAS D-RAM IC307 (Page 23) A DADT, BCK, LRCK, FS256 (Page 23) C L