SONY WM-EX2000V1.2电路原理图 .pdf

《SONY WM-EX2000V1.2电路原理图 .pdf》由会员分享，可在线阅读，更多相关《SONY WM-EX2000V1.2电路原理图 .pdf（23页珍藏版）》请在收音机爱好者资料库上搜索。

1、WM-EX2000 US Model AEP Model Chinese Model E Model Tourist Model SERVICE MANUAL SPECIFICATIONS Model Name Using Similar MechanismNEW Tape Transport Mechanism TypeMT-WMEX2000-162 Manufactured under license from Dolby Laboratories Licensing Corporation. “DOLBY” and the double-D symbol ; are trademarks

2、 of Dolby Laboratories Licensing Corporation. CASSETTE PLAYER Sony Corporation Personal Audio Company Published by Sony Engineering Corporation 9-873-022-13 2003K16-1 2003.11 Frequency response (Dolby NR off)Playback: 30 18,000 Hz OutputHeadphones (i jack) Load impedance 8 300 Power requirements1.2

3、V One rechargeable battery Dimensions (w/h/d)Approx. 76.3 108.4 17.5 mm (31/8 43/8 23/32 inches) MassApprox. 145 g (5.2 oz.) Supplied accessoriesStereo headphones or earphones with remote control (1) Battery charging stand (1) AC power adaptor (1) Rechargeable battery (NH-14WM (A), 1.2V, 1 350 mAh (

4、MIN), Ni-MH) (1) Rechargeable battery carrying case (1) Carrying pouch (1) Design and specifications are subject to change without notice Ver 1.2 2003. 11 本资料由O K X I A 视听皮带资源库w w w . o k x i a . c n 提供 本资料由视听皮带资源库 收集整理提供 2 Notes on chip component replacement Never reuse a disconnected chip componen

5、t. Notice that the minus side of a tantalum capacitor may be damaged by heat. Flexible Circuit Board Repairing Keep the temperature of soldering iron around 270C during repairing. Do not touch the soldering iron on the same conductor of the circuit board (within 3 times). Be careful not to apply for

6、ce on the conductor when soldering or unsoldering. TABLE OF CONTENTS 1. GENERAL 2 2. SERVICE NOTE3 3. DISASSEMBLY 3-1. Lid Block Assy, Cassette 5 3-2. Case Block Assy 5 3-3. Ornament (Open) Block Assy 6 3-4. “Switch, Leaf (S704)”, Main Board 6 3-5. Belt (F0), Motor (M601) 7 3-6. Holder (FA) Assy 7 3

7、-7. Pinch Lever (NF)/(RF) Assy 8 3-8. Head, Magnetic (HP701) 8 4. MECHANICAL ADJUSTMENT 9 5. ELECTRICAL ADJUSTMENT 9 6. DIAGRAMS 6-1. Block Diagram 10 6-2. Printed Wiring Board 12 6-3. Schematic Diagram (1/2) 15 6-4. Schematic Diagram (2/2) 18 6-5. IC Block Diagrams 21 6-6. IC Pin Function Descripti

8、on 23 7. EXPLODED VIEWS 7-1. Cabinet Block 24 7-2. Mechanism Deck Block 25 8. ELECTRICAL PARTS LIST 26 SAFETY-RELATED COMPONENT 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

9、 WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. SECTION 1 GENERAL This section is extracted from instruction manual. MODE SOUND VOL AVLS HOLD Hold shutter Cache de verrouillage Schutzschieber VOL AVLS REW () FF (+) Yx Jog lever Levier Jog Jog-H

10、ebel FF REW Jog lever Levier Jog Jog-Hebel Plug in firmly. Branchez fermement. Fest einstecken. OPEN 本资料由视听皮带资源库 收集整理提供 3 M601M TAPE IN SWITCH (S704-1) ATS SWITCH (S704-2) BP1 Battery terminal # Plunger (PM701) Battery terminal 3 (S702) FWDCNTREV jumper GND (TP10) S PH IN(S)(TP32) T PH IN(S)(TP31) S

11、quare wave (sine wave) 10 Hz, -3.5 dBs AF OSC SECTION 2 SERVICE NOTE Service Mode The service mode enables to operate the mechanism of WM-EX2000 while the MAIN board is opened. Rotation of the idler gear (A) (S side) is detected using the photo- reflector (PH702) in the WM-EX2000. PH702 is located o

12、n the MAIN board, therefore the rotation of the idler gear (A) (S side) cannot be detected by PH702 when the MAIN board is removed. As a result, the motor cannot be controlled and cannot run correctly. To repair the machine after the MAIN board is removed while the main power is turned on, follow th

13、e procedures as described below. 1. Setting 1)Remove the cabinets referring to section “3. DISASSEMBLY”. Open the MAIN board. 2)Connect the motor (M601) and the plunger solenoid (PM701) to the MAIN board using the jumper wires. When the extension jig (1-769-143-11) (10 wires as a set) is used, they

14、can be connected easily. 3)Short the TAPE IN switch land (BP1) with solder. Input a square (or sine) wave of 10 Hz (at 1.3 Vp-p) to both PH IN T land (TP31) and PH IN S land (TP32) with jumper wire. 4)Connect DC 1.3 V from external regulated power supply to 3 and # terminals of the battery. 2. PRE-S

15、ET status The set must be in this state before the PLAY, FF and REW modes can be entered. 1)Make sure that the slider (F/R) is in the center position and that the F/R switch (S702) is in the center position. Make sure that the reel gear does not rotate by rotating the flywheel on the F side clockwis

16、e. If improper, place the set in the preset state according to the following instructions: 2)Repeat the step below some times to ensure the above conditions. *Pull away the trigger level from the plunger with tweezers or other means. Then rotate the flywheel on the F side clockwise. 3)Turn the stabi

17、lized power supply OFF once and then ON. 3. FF, REW modes 1)Check for “2. Preset state” and push the FF switch and the REW switch. 2)Move the F/R switch (S702) to the movement of the slider to enter the FF/REW mode. 4. PLAY mode 1)Check for “2. Preset state”. 2)Push the nN switch on the remote comma

18、nder to move the lever (SW) toward the R side. With timing to this, move the F/ R switch (S702) to enter the PLAY (R side) mode. Note 1: If failed, retry from the preset state. Note 2: The nN, x, FF, and REW switches on the remote commander should be used whenever possible. MAIN BOARD (SIDE B) 本资料由视

19、听皮带资源库 收集整理提供 4 Slider (NR) Rotational system 1. Rotational System of PLAY Mode2. Rotational System of FF Mode 3. Rotational System of REW Mode F side flywheel F sidecenterR side slider (NR) motor pulley gear (reel) (T side) gear (reel) (S side) idler gear (A) (T side) idler gear (A) (S side) gear (

20、NR) FWDREV idler gear (B) gear (Y) clutch assy (F) reverse pulley flywheel (R) assy flywheel (N) assy motor pulley gear (FR) gear (reel) (T side) idler gear (A) (T side) reverse pulley flywheel (R) assy flywheel (N) assy gear (Y) clutch assy (F) gear (reel) (S side) idler gear (A) (S side) motor pul

21、ley gear (FR) gear (Y) clutch assy (F) reverse pulley flywheel (R) assy flywheel (N) assy 本资料由视听皮带资源库 收集整理提供 5 SECTION 3 DISASSEMBLY Note :Follow the disassembly procedure in the numerical order given. The equipment can be removed using the following procedure. 3-1. LID BLOCK ASSY, CASSETTE 3-2. CAS

22、E BLOCK ASSY 3 4 1 Two screws (1.4) 2 Screw (1.4) Lid block assy, cassette Mechanism deck block 3 Two screws (1.4) 4 Screw (1.4) 5 2 Two screws (1.4) Case block assy 1 Lid, battery case Claw Lid Block Assy, Cassette Case Block Assy Ornament (OPEN) Block Assy Switch, Leaf (S704) Main Board Belt (F0),

23、 Motor (M601)Set Holder (FA) AssyPinch Lever (NF)/(RF) AssyHead, Magnetic (HP701) 本资料由视听皮带资源库 收集整理提供 6 3-3. ORNAMENT (OPEN) BLOCK ASSY 3-4. “SWITCH, LEAF (S704)”, MAIN BOARD Mechanism deck block Ornament (open) block assy 2 1 1 3 Screw 5 Screw (M1.4) 1 Screw 4 Unsolder the 4 places. 7 Unsolder the p

24、lunger. 0 Claw 6 Switch leaf (S704) 2 Screw (M1.4) qa MAIN board 8 Unsolder the flexible board. 9 Unsolder the motor. 本资料由视听皮带资源库 收集整理提供 7 2 Two screws (M1.4) 4 Motor (M601) 3 Retainer (F1), motor 1 Belt (F0) Belt (F0) 3-5. BELT (F0), MOTOR (M601) 3-6. HOLDER (FA) ASSY 8 Screw (M1.4) qa Remove solde

25、ring from Head flexible board. 0 Bracket (CASSETTE) assy 9 Shaft 6 Shaft 5 Two screws (M1.4) 7 Lever (B) assy, lock qd Remove the holder (FA) assy in the direction of the arrow. 2 Screw (M1.4) qs Head flexible board 3 Hook, spring 1 Spring, tension 4 Spring, tension Ver 1.2 2003. 11 本资料由视听皮带资源库 收集整理

26、提供 8 3-7. PINCH LEVER (NF)/(RF) ASSY 3-8. HEAD, MAGNETIC (HP701) Claw Claw 1 Remove the pinch lever (RF) assy in the direction of the arrow. Note: Be careful of the claw 2 Remove the pinch lever (NF) assy in the direction of the arrow. Note:Be careful of the claw 5 Remove the head, magnetic (HP701)

27、in the direction of the arrow. 1 Remove the spring (HD2). 2 Remove the spring (HDA). 3 Remove the seat (H). Lever, head 4 Remove the head lever while the head, magnetic (HP701) is kept attached. 本资料由视听皮带资源库 收集整理提供 WM-EX2000 9 10 11 SECTION 6 DIAGRAMS 6-1. BLOCK DIAGRAM SECTION 4 MECHANICAL ADJUSTMEN

28、TS PRECAUTION 1.Clean the following parts with a denatured-alcohol-moistened swab : playback headpinch roller capstanrubber belt 2.Demagnetize the playback head with a head demagnetizer. 3.Do not use a magnetized screwdriver for the adjustments. 4.The adjustments should be performed with the rated p

29、ower supply voltage (DC 1.3 V) unless otherwise noted. Torque Measurement SECTION 5 ELECTRICAL ADJUSTMENT PRECAUTION Supplied voltage: 1.3 V Switch and control position VOL switch: NORM Remote control position HOLD switch: OFF VOL control: MAX SOUND mode : NORM DOLBY mode : OFF Test tape Tape Speed

30、Adjustment Procedure : 1.Playback WS-48A (tape center part) in the FWD state and adjust RV601 so that the frequency counter reading becomes 3,000 Hz. Specification Value : 2.Check that frequency counter reading is within 2% of reading of step 1. Adjustment Location : Digital frequency counter 2,985

31、to 3,015 Hz Type WS-48A Signal 3 kHz, 0 dB Used for tape speed adjustment ModeTorque MeterMeter Reading 1.47 2.45 mN m FWD CQ-102C (15 25 g cm) FWD0.03 0.20 mN m back tension(0.3 2.0 g cm) 1.47 2.45 mN m REV CQ-102RC (15 25 g cm) REV0.03 0.20 mN m back tension(0.3 2.0 g cm) more than 3.43 mN m FF, R

32、EWCQ-201B (more than 35 g cm) + i test tape WS-48A (3 kHz, 0 dB) set REMOTE jack (J301) 32 frequency counter RV601 AMS IN DOLBY CTL BOOST CTL F/R CTL SURRUND CTL MEGA BASS CTL XT0 XT1 CASSETE SW PHOTO CTL PHOTO (T) IN 39 BEEP36 20 48 8 RV CTL7 10 9 28 29 5 19 38 PHOTO (S) IN39 SPEED DTL18 MOTOR STAR

33、T41 MOTOR U47 MOTOR V46 MOTOR W45 CTRL 144 CTRL 243 MOTOR DIR42 40 X701 32.768kHz MUTE CTL12 SURROUND SWITCH Q308 SURROUND SWITCH Q310 SURROUND SWITCH Q313 PLUNGER DRIVER Q701 RESET IC704 MB 0.2V/div 5sec/div 150 Hz 150 Hz 4 Q603 135 0.5V/div 5sec/div 6 IC701 5 1V/div 5sec/div 100 kHz 7 IC702 wk 1V/

34、div 0.2sec/div 4 MHz 本资料由视听皮带资源库 收集整理提供 21 6-5. IC BLOCK DIAGRAMS IC301 TA2123AF + + AGC DET BST PWC PWB + PWA + + + + TOMP RIPPLE FILTER MIX MTL DRV VREF PREA PREB BEEP SW 36 35343332 31302928 27 2625 24 22 21 20 19 18 17 16 15 14 13 23 121110987653214 48 47 46 45 44 43 42 41 40 39 38 37 AGC DET AG

35、C IN BST NF BST OUT PW IN C LPF EQ L PW NF L PW IN L PW IN R PW NF R EQ R RF IN PW GND PW OUT R PW OUT C PW OUT L VCC BASE RF OUT GND AMS DET AMS MIX AMS IN VREF IN PRE GND M/N SW PRE SW F/R SW BST SW PW SW NT SW AMS OUT BEEP MT TC CAMP SW AMS IN PRE NF-R PRE OUT-R MTL DRV-R MTL DRV-L PRE OUT-L PRE

36、NF-L REV IN-L REV IN-R REF OUT FWD IN-R FWD IN-L IC701 XC6383C251ML + + BIAS CIRCUIT WEIGHT G2G1V/I ACH BLOCK GM SUN BCH BLOCK (SAME ACH) 141312111098 1234567 GNDIREFVREFINBOUT BDC BDET B VCCSWVEXTIN AOUT ADC ADET A IC303 NJM2185AV IC302 NJM2190V 9 LIN VREF C3 GND C4 MODE ROUT REFIN WOUT C2 V+/2 V+

37、LOUT C1 WIN RIN 10111213141516 15234678 + EXT FILTER MATRIX MODE CONTROL BIAS BYPASS BYPASS SRS SRS 3 1 BUFFER PWM/PFM CONTROL OSC 50/100/180 kHz VLx LIMITER PHASE COMP V REF SLOW START 2 Lx Vss V OUT 本资料由视听皮带资源库 收集整理提供 22 IC601 LB1994M DECODER CTRL BLOCK POWER D/DTPULSE BUFFER COMPARATORBUFFERVI CO

38、MPARATOR SOFT CLIP CURRENT AMP P-SIG PWSW 45612978 14 15 16 17 18 19 2021222423252627 30 29 28 36 35 34 33 32 31 WSMC U IN 3 VCC V IN W IN CTRL1 CTRL2 DIR VS US U OUT NC V OUT W OUT WT VT UT PGND FC CT2 CT1 IR ICI2 ICI1 I SOFT M CENTER GND VI2 VI1 IV VC 13PW 12CI 11Vref 10P SIG IC703 MM1305BWBE + +

39、+ + 1 2 3 4 8 7 6 5 VCC CE RIPPLE GND OUT 1 OUT 2 OUT 3 OUT 4 本资料由视听皮带资源库 收集整理提供 23 6-6. IC PIN FUNCTION DESCRIPTION IC705 ML63514-024TBZ060 (SYSTEM CONTROL) Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48

40、 I/O O I I I I I/O O O O O O O I I I I O O O O I O I I I O I O I I I I O O O O O O O O Description Audio ATT circuit control output. L=OFF. H=ON (during CUE/REVIEW) MD MODE SW (FWD). L=ON MD MODE SW (CENTER). L=ON MD MODE SW (RVS). L=ON Cassette detection switch input. L= Exists. H=Not exist. Data o

41、utput for communication. Remote control inspection input terminal. Tone control. H=REVIVE ON. L=OFF/MB/GRV/SUR Tone control. H=MB/REV ON. L=OFF/GRV/SUR Head switching output. L=FWD. H=RVS Tone control. H=BOOST ON. L=OFF Audio circuit/DDC control output. H=POWER ON Audio muting control output. L=MUTE

42、 ON A/B-side detection SW input. L=FWD: Side A Input for switching between two models. L=EX2000. H=EX910 Input terminal for power supply voltage detection Operation button signal, input terminal Plunger solenoid control output. L=ON Motor speed 1/2 control output. L=Normally. Open=During 1/2 time sp

43、eed Rotation detection intermittent output. L=ON Dolby circuit control output. L=ON External interface power supply (P8 power supply) terminal Power supply terminal of negative polarity side Power supply terminal of positive polarity side Pressure power supply terminal for backup External capacitor

44、for step-up power supply is connected to this terminal. External capacitor for step-up power supply is connected to this terminal. Power supply terminal of positive polarity side for internal logic External crystal oscillator External crystal oscillator Test input terminal Test input terminal Extern

45、al capacitor for oscillation is connected to this terminal. External resistor for high-speed CR oscillator (550 kHz) is connected to this terminal. External resistor for high-speed CR oscillator (550 kHz) is connected to this terminal. Reset input terminal Beep sound output Rotation detection signal

46、 input, S side Rotation detection signal input, T side Sound detection signal (AMS) input terminal. H=No sound. (external interrupt) Motor P-SIG input (external interrupt) Motor startup signal output. L=During startup Motor rotation direction control output. H=CCW. L=CW Servo IC mode selection outpu

47、t Servo IC mode selection output Motor control output Motor control output Motor control output Sound circuit control output. EX2000: L=N. H=OFF. EX910: L. Fixed Pin Name AUDIO ATT FWD SW CENTER SW RVS SW CASSETTE SW DATA/RMUM REVIVE CTL MEGA BASS CTL F/R CTL BOOST CTL AMP CTL MUTE CTL A/B SW MODEL

48、SELECT BATT DET KEY IN PM CTL SPEED CTL PHOTO CTL DOLBY CTL VDDI VSS VDD VDDH CB1 CB2 VDDL XT0 XT1 TEST1B TEST2B NC OSC0 OSC1 RESET BEEP PHOTO (S) IN PHOTO (T) IN AMS IN P-SIG MOTOR START MOTOR DIR CTRL2 CTRL1 MOTOR W MOTOR V MOTOR U SURROUND CTL 本资料由视听皮带资源库 收集整理提供 SECTION 7 EXPLODED VIEWS NOTE: -XX

49、, -X mean standardized parts, so they may have some differences from the original one. Items marked “*” are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items. The mechanical parts with no reference number in the exploded views are not supplied. Hardware (# mark) list and accessories and packing materials are given in the last of this parts list. Color