索尼SONY WM-EX910电路图.pdf

《索尼SONY WM-EX910电路图.pdf》由会员分享，可在线阅读，更多相关《索尼SONY WM-EX910电路图.pdf（23页珍藏版）》请在收音机爱好者资料库上搜索。

1、SERVICE MANUAL Ver 1.0 2000. 10 CASSETTE PLAYER E Model Chinese Model SPECIFICATIONS WM-EX910 Photo: Blue model Manufactured under license from Dolby Laborato- ries. “Dolby” and the double-D symbol are trademarks of Dolby Laboratories. Model Name Using Similar MechanismNEW Tape Transport Mechanism T

2、ypeMT-WMEX910-162 Battery life (Approx. hours) (in playback) (EIAJ*) Rechargeable NC-6WM20 fully charged Sony alkaline LR6 (SG)*66 Rechargeable NC-6WM84 Sony alkaline LR6 (SG) used together * Measured value by the standard of EIAJ (Electronic Industries Association of Japan). (Using a Sony HF series

3、 cassette tape) *When using a Sony LR6 (SG) “STAMINA” alkaline dry battery (produced in Japan). Frequency response (Dolby NR off) Playback: 30 - 18 000 Hz Output Headphones (i jack) Load impedance 8 - 300 Power requirements 1.5 V One rechargeable battery One R6 (size AA) battery Dimensions (w/h/d) A

4、pprox. 76.3 108.4 17.6 mm (318 438 x 2332 inches) Mass Approx. 140 g (5.0 oz.) Supplied accessories Battery case (1) Stereo headphones or earphones with remote control (1) Battery charger (1) Rechargeable battery (NC-6WM, 1.2V, 600 mAh, Ni-Cd) (1) Rechargeable battery carrying case (1) Carrying pouc

5、h (1) Design and specifications subject to change without notice. ? ? ? ? ? ? ? ? ? ? 2 TABLE OF CONTENTS 1.SERVICING NOTES.3 2.GENERAL.5 3.DISASSEMBLY.6 4.MECHANICAL ADJUSTMENTS. 11 5.ELECTRICAL ADJUSTMENTS. 11 6.DIAGRAMS 6-1.Block Diagram . 13 6-2.Printed Wiring Board . 15 6-3.Schematic Diagram .

6、17 6-4.IC Pin Function Description . 22 7.EXPLODED VIEWS. 24 8.ELECTRICAL PARTS LIST. 27 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 o

7、f the soldering 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. SAFETY-RELATED COMPONENT WARNING! COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED

8、 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 PUB- LISHED BY SONY. ? ? ? ? ? ? ? ? ? ? 3 SECTION 1 SERVICING NOTES This set detects the rot

9、ation of the idler gear (A) (side S and side T) using the photo reflector (PH701, 702). The PH701, 702 are mounted on the MAIN board, therefore the idler gear (A) (side S and side T) cannot be detected with the MAIN board removed. As a result, the motor (M601) cannot be controlled, causing malfunc-

10、tion. Further, the DIRECTION switch (S702) is also mounted on the MAIN board, and with the board removed, the mechanism posi- tion cannot be detected and the operation is not changed over. Therefor, when the voltage check is executed with the MAIN board removed, follow the procedure provided below.

11、1.Setting 1) Refer to “3. DISASSEMBLY”, and remove the MAIN board. 2) Connect the MAIN board to the motor (M601) and the plunger (PM701) using jumper wires. These can be connected easily with the use of the extension tool (Part No. 1-769-143-11) (ten in one set). 3) Short the lands by solder. 4) Con

12、nect the AF oscillator to the TP31 (PH-S), TP32 (PH-T) and the TP (GND). 5) Supply 1.3 V to the battery terminals using the regulated power supply. 2.Preset state To set the PLAY, FF, REW modes, the preset state must be set. 1) Check that the slider (NR) and the DIRECTION switch (S702) are set to th

13、e center position. If not, set the preset state as fol- low. 2) Move the DIRECTION switch (S702) to the side, which the slider (NR) is facing. 3) The slider (NR) will move when the regulated power supply switch is set to OFF once and then set to ON. Move the DI- RECTION switch (S702) according to th

14、is timing and set to the center position. 3.FF, REW modes 1) Check that the preset state is set. 2) Input the square wave or sine wave to the TP31 (PH-S), TP32 (PH-T) and the TP (GND). 3) Move the jog lever (S703) toward FF or REW. 4.PLAY mode 1) Check that the preset state is set. 2) Input the squa

15、re wave or sine wave to the TP31 (PH-S), TP32 (PH-T) and the TP (GND). 3) Press the jog lever (S703) will move the slider (NR) once to- wards the side REV and then to the side FWD. Move the DI- RECTION switch (S702) according to this timing will set the PLAY mode (side FWD). Press the jog lever (S70

16、3) another time for a second and move the DIRECTION switch (S702) ac- cording to the movement of the slider (NR) will set the PLAY mode (side REV). Note 1: If the above fails, perform from preset again. Note 2: When using headphones, the timing for move the DIRECTION switch (S702) can be determined

17、from the beep sound. + PUSH Y/ x r PH702 S703 jog lever S702 (DIRECTION) BP701 FWD R STOP r REV PH701 REW . FF MAIN BOARD (Side A) MAIN BOARD (Side B) connect to the plunger (PM701) TP32 (PH-T) TP (GND) TP31 (PH-S) AF oscillator square wave (sine wave) 100 Hz, 3.5 dB connect to the motor (M601) batt

18、ery terminal 3 battery terminal # ? ? ? ? ? ? ? ? ? ? 4 Slider (NR)Rotation system Rotation system during PLAY. Rotation system during FF.Rotation system during REW. slider (NR) side F side R center insert flywheel (N)insert flywheel (R) reverse pulley clutch assy (F) gear (Y) cam gear gear (REEL) (

19、side T)motor pulley idler gear (A) (side T) gear (FR) (FF: left side) insert flywheel (N)insert flywheel (R) reverse pulley clutch assy (F) idler gear (B) gear (Y) cam gear gear (REEL) (side T) gear (REEL) (side S) motor pulley idler gear (A) (side T) idler gear (A) (side S) gear (NR) (FWD : left si

20、de/ REV : right side) insert flywheel (N)insert flywheel (R) reverse pulley clutch assy (F) gear (Y) cam gear gear (REEL) (side S) motor pulley idler gear (A) (side S) gear (FR) (REW: right side) ? ? ? ? ? ? ? ? ? ? 5 SECTION 2 GENERAL This section is extracted from instruction manual. A UK, Austral

21、ian, and Hong Kong model Modle pour le Royaume-Unie, lAustralie et Hong-Kong Modell fr GB, Australien und Hongkong Other models Autres modles Andere Modelle 1 2 3 4 B VOL AVLS OPEN C D Y x FF (+) REW () Jog lever Levier Jog Jog-Hebel FWD REV HOLD Plug in firmly. Branchez fermement. Fest einstecken.

22、Hold shutter Cache de verrouillage Schutzschieber Jog lever Levier Jog Jog-Hebel FF REW E HOLD MODE SOUND F G OPEN Hold shutter Cache de verrouillage Schutzschieber VOL AVLS ? ? ? ? ? ? ? ? ? ? 6 SECTION 3 DISASSEMBLY This set can be disassembled in the order shown below. Note: Follow the disassembl

23、y procedure in the numerical order given. CASE SECTION SETCASE SECTIONMAIN BOARD HOLDER (FA) ASSY HEAD, MAGNETIC (PLAYBACK) (HP901) BELT (F4)MOTOR, DC (CAPSTAN/REEL) (M601) ORNAMENT (OPEN) BLOCK ASSY LID SUB ASSY, CASSETTE LEVER (N2)/(R2) ASSY, PINCH S701 knob (vol) Note:On installation “lid assy, c

24、assette” adjust the S701 and knob (vol). lid assy, cassette 4Close terminal board assy. 5two screws (MI) 6screw (MI) 2claw 1open “lid, battery case”. 3lid, battery case 7case section 5two screws (MI) ? ? ? ? ? ? ? ? ? ? 7 MAIN BOARD BELT (F4) 2screw (M1.4) (toothed lock) 3MAIN board 2screw 2screw 1R

25、emove six solders of head flexible board. 1Remove seven solders of “motor, DC (M601)”. 1Remove two solders of “solenoid, plunger”. 1Remove four solders of “switch, leaf (S704)” slider S702 Note:On installation MAIN board adjust the S702 and slider. 2terminal board, battery 1Remove solder of “termina

26、l board, battery”. 3belt (F4) pulley, motor pulley, reverse flywheel (R), insert belt (F4) flywheel (N), insert ? ? ? ? ? ? ? ? ? ? 8 MOTOR, DC (CAPSTAN/REEL) (M601) LID SUB ASSY, CASSETTE 2motor, DC (capstan/reel) (M601) 1two screws (M1.4) 2two screws (MI) 2screw 3boss 1Open “lid assy, cassette”. 4

27、lid sub assy, cassette ? ? ? ? ? ? ? ? ? ? 9 ORNAMENT (OPEN) BLOCK ASSY HOLDER (FA) ASSY 2claw 4two claws 5ornament (open) block assy 3boss 1 1 7bracket (cassette/910) assy 2boss 6boss 3lever (B) (/M), lock 5lever (S) (/M), lock 1two screws (M1.4) 4screws (M1.4) 8Remove six solders of head flexible

28、board. 9holder (FA) assy ? ? ? ? ? ? ? ? ? ? 10 LEVER (N2)/(R2) ASSY, PINCH HEAD, MAGNETIC (PLAYBACK) (HP901) 1claw 3claw 2Remove “lever (R2) assy, pinch” in the direction of the arrow. 4Remove “lever (N2) assy, pinch” in the direction of the arrow. holder (FA) assy 4boss lever, head 3claw 1claw 2 5

29、head, magnetic (playback) (HP901) ? ? ? ? ? ? ? ? ? ? 11 PRECAUTION 1.Clean the following parts with a denatured-alcohol-moistened swab: playback headpinch roller rubber beltscapstan 2.Demagnetize the playback head with a head demagnetizer. (Do not bring the head demagnetizer close to the erase head

30、.) 3.Do not use a magnetized screwdriver for the adjustments. 4.The adjustments should be performed with the rated power supply voltage (1.3 V) unless otherwise noted. Torque Measurement ModeTorque MeterMeter Reading (1.47 2.94 mNm) FWD15 25 gcm CQ-102C (0.22 0.36 ozinch) (0.029 0.196 mNm) FWD 0.3 2

31、.0 gcm Back Tension (0.004 0.01 ozinch) (1.47 2.94 mNm) REV15 25 gcm CQ-102RC (0.22 0.36 ozinch) (0.029 0.196 mNm) REV 0.3 2.0 gcm Back Tension (0.004 0.01 ozinch) (more than 3.43 mNm) FF, REWCQ-201Bmore than 35 gcm (more than 0.5 ozinch) SECTION 4 MECHANICAL ADJUSTMENTS SECTION 5 ELECTRICAL ADJUSTM

32、ENTS PRECAUTION 1.Specified voltage: 1.3 V (DC) 2.Switch position VOL, AVLS: Center 3.Remote control setting HOLD switch: OFF VOL knob: MAX DOLBY NR: OFF SOUND mode: Normal 0 dB=0.775 V Test tape TypeSignalUsed for WS-48A3 kHz, 0 dBTape Speed Adjustment Tape Speed Adjustment Setting: Procedure: 1.Pl

33、ayback WS-48A (tape center) in the FWD state. 2.Adjsut RV601 so that the frequency counter reading becomes 3,000 Hz. Specification Values: 2,985 to 3,015 Hz 3.Playback WS-48A (tape center) in the REV state. Check that the frequency counter reading is within 2.0% (approx.60 Hz) of the reading of step

34、 1. Adjustment Location: MAIN BOARD frequency counter test tape WS-48A (3 kHz, 0 dB) set i jack (J301) + 16 RV601 ? ? ? ? ? ? ? ? ? ? WM-EX910 13 14 SECTION 6 DIAGRAMS 6-1.BLOCK DIAGRAM PREAMP METAL CONTROL HP901 (PLAYBACK) AUDIO MASTER AMP IC301-1 S704-2 (ATS) PRE OUT-L MTL DRV-R FWD IN-L REV IN-L

35、L-CH R-CH FWD L-CH R-CH REV R-CH R-CH R-CH F/R SW M/N SW 7 9 46 1 5 S704-1 (TAPE DETECT) F/R CTL 9 17 CASSETTE SW 5 METAL SWITCH Q306 METAL EQ AMP CONTROL Q305 PRE OUT CONTROL Q315 R-CH FWD SW CEN SW REV SW S701 (DIRECTION) FWD STOP REV 234 MAX MID MIN 45 14 IN-LOUL-L VCC B+ SWITCH Q316 DOLBY NR AMP

36、 IC303 DDC B+ VOLUME MIN SWITCH Q315 VOLUME MAX SWITCH Q311 R-CHR-CH R-CH DDC B+ VOL, AVLS S301 MUTING Q317 DOLBY CTL 20 AUDIO ATT REVIVE CTL MEGA BASS CTL AMS IN BOOST CTL MUTE CTL BEEP DATA/RMUM KEY IN XT0 XT1 17 28 29 30 MEGA BASS/ GROOVE SWITCHING Q302 REVIVE/ GROOVE SWITCHING Q304 8 R-CH AMS V/

37、I BASS BOOST AMPBST OUT AMS OUT 40 33 AMS IN 12 POWER AMP POWER AMP EQ-L PW IN-C PW NF-L PW IN-L 32 434142 R-CH R-CH AGC DET35 AGC IN 21 PW OUT-C 20 171819 PW OUT-L BEEP i 39 39101236 BST SW MT SW PW SW BEEP R-CH BATT B+VCC DATA REMO GND JOG LEVER & SWITCH S703 REW/FF PUSH Y/x + RIPPLE FILTER Q309 B

38、ATT B+ AUDIO MASTER AMP IC301-2 RF OUT BASE VCC J301 6162829 X701 32.768kHz M/N CONTROL Q301 PLUNGER DRIVE Q701 PM701 (PLUNGER) PM CTL RECHARGEABLE BATTERY NC-6WM DRY BATTERY SIZE “AA” (IEC DESIGNATION R6) 1PC. 1.5V BATTERY CASE DC/DC CONVERTER IC701 1 2 3 48 7 VOLTAGE DETECT IC702 STOP SWITCH Q702

39、BATT B+ RESET SIGNAL GENERATOR IC704 VOLTAGE DETECT IC703 351511 DDC B+ OUT1 OUT2 OUT3 OUT4VCC CE DDC B+ ROTATION DETECT SENSOR (T REEL) PH702 DDC B+ ROTATION DETECT SENSOR (S REEL) PH701 19 CAPSTAN/REEL MOTOR SERVO IC601 DECODER SOFT CLIP 13 34 32 31 35 36 1 28 29 30 P-SIG ENCODER COMPARATOR PULSE/

40、t BUFFER COMPARATOR 14 15 17 CAPSTAN/REEL MOTOR START SWITCH Q602 BUFFERVI 16 4 5 6 POWER CURRENT AMP 21 9 7 TAPE SPEED RV601 CONTROL BLOCK 8 10 40 19 BATT B+ 2 CAPSTAIN/REEL MOTOR SWITCH Q601 CAPSTAIN/REEL MOTOR CONTROL Q603-2 CAPSTAIN/REEL MOTOR CONTROL Q603-1 M601 CAPSTAIN/REEL MOTOR 411847 46 45

41、4244 43 U V W TU TV TW COM MC UOUT VOUT WOUT US VS WS UT VT WT MC ENTER PSIG PW VC IV VI2 VI1 UIN VIN WIN U V W ICI1 DR CTRL1 CTRL2 CTRL1 CTRL2 U V W CTRL1 CTRL2 RESET BATT DET AMP CTL PHOTO CTL P-SIG MOTOR START SPEED CTL MOTOR U MOTOR V MOTOR W MOTOR DIR CTRL1 CTRL2 SYSTEM CONTROLLER IC705 44 37 P

42、HOTO (S) IN 38 PHOTO (T) IN 05 SIGNAL PATH R-ch is omitted due to same as L-ch. : PLAY PHOTO REFLECTOR SWITCH & BUFFER Q703 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? WM-EX910 15 16 6-2.PRINTED WIRING BOARD Semiconductor Location Ref. No.Location D701D-2 D702G-6 IC301B-6 IC303C-3 IC601H-4 IC701G-6 IC702D-1 IC703