Sony-TCWE435-tape-sm 电路图 维修手册.pdf

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1、 1 Model Name Using Similar MechanismTC-WE425/WE525/WR681 DECK ATCM-230ASR3/HSR3 DECK BTCM-230ASR4/HSR4 SERVICE MANUALUS Model Canadian Model AEP Model UK Model E Model Australian Model Chinese Model STEREO CASSETTE DECK SPECIFICATIONS Dolby noise reduction extension manufactured under license from

2、Dolby Laboratories Licensing Corporation. HX Pro originated by Bang & Olufsen. “DOLBY”, the double-D symbol a and “HX PRO” are trademarks of Dolby Laboratories Licensing Corporation. TC-WE435 Continued on next page Transport Mechanism Type Ver 1.1 2001. 05 9-928-829-12 2001E0200-1 2001.5 Sony Corpor

3、ation Personal Audio Company Shinagawa Tec Service Manual Production Group RadioFans.CN 收音机爱 好者资料库 2 SAFETY-RELATED COMPONENT WARNING! 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 W

4、ITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. ATTENTION AU COMPOSANT AYANT RAPPORT LA SCURIT! LES COMPOSANTS IDENTIFIS PAR UNE MARQUE ! SUR LES DIAGRAMMES SCHMATIQUES ET LA LISTE DES PICES SONT CRITIQUES POUR LA SCURIT DE FONCTIONNEMENT. NE REM

5、PLACER CES COMPOSANTS QUE PAR DES PICES SONY DONT LES NUMROS SONT DONNS DANS CE MANUEL OU DANS LES SUPPLMENTS PUBLIS PAR SONY. SAFETY CHECK-OUT After correcting the original service problem, perform the follow- ing safety checks before releasing the set to the customer: Check the antenna terminals,

6、metal trim, “metallized” knobs, screws, and all other exposed metal parts for AC leakage. Check leakage as described below. LEAKAGE 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

7、 (500 microampers). Leak- age current can be measured by any one of three methods. 1. A commercial leakage tester, such as 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

8、is suitable for this job. 3. Measuring the voltage drop across a resistor by means of a VOM or battery-operated AC voltmeter. The “limit” indication is 0.75 V, so analog meters must have an accurate low-voltage scale. The Simpson 250 and Sanwa SH-63Trd are examples of a pas- sive VOM that is suitabl

9、e. Nearly all battery operated digital multimeters that have a 2V AC range are suitable. (See Fig. A) Fig. A. Using an AC voltmeter to check AC leakage. 0.15F To Exposed Metal Parts on Set 1.5k AC voltmeter (0.75V) Earth Ground RadioFans.CN 收音机爱 好者资料库 3 MODEL IDENTIFICATION Back panel Part No. PARTS

10、 No.MODEL 3-032-413-0US model 3-032-413-1CND model 3-032-413-2AEP model 3-032-413-3UK model 3-032-413-4AUS model 3-032-413-5SP, MY model 3-032-413-6CH model Abbreviation CND : Canadian model SP: Singapore model MY: Malaysia model AUS : Australian model CH: Chinese model TABLE OF CONTENTS 1. GENERAL.

11、 4 2. DISASSEMBLY 2-1. Case . 5 2-2. Front Panel Assembly . 5 2-3. Cassette Lid Assembly (Deck A/B) . 6 2-4. Mechanism Deck Assembly (Deck A/B) . 6 2-5. Leaf SW (PB) Board (Deck A), Leaf SW (REC/PB) Board (Deck B) . 7 2-6. Pinch Lever (FWD)/(REV) Assembly (Deck A/B). 8 2-7. Flywheel (FWD)/(REV) Asse

12、mbly (Deck A/B) . 8 2-8. Mechanical Block Assembly (Deck A/B) . 9 2-9. Head Relay (PB) Board (Deck A), Head Relay (REC/PB) Board (Deck B). 9 3. SERVICE MODE. 10 4. MECHANICAL ADJUSTMENTS.11 5. ELECTRICAL ADJUSTMENTS.11 6. DIAGRAMS 6-1. Circuit Boards Location .15 6-2. Printed Wiring Board Main Secti

13、on .17 6-3. Schematic Diagram Main Section (1/4). 19 6-4. Schematic Diagram Main Section (2/4). 21 6-5. Schematic Diagram Main Section (3/4). 23 6-6. Schematic Diagram Main Section (4/4). 25 6-7. Printed Wiring Board Deck A Section .27 6-8. Schematic Diagram Deck A Section . 27 6-9. Printed Wiring B

14、oard Deck B Section .28 6-10. Schematic Diagram Deck B Section .28 6-11. Schematic Diagram Display Section .29 6-12. Printed Wiring Board Display Section .31 6-13. Schematic Diagram Panel Section .33 6-14. Printed Wiring Board Panel Section .35 6-15. Schematic Diagram Power Section . 37 6-16. Printe

15、d Wiring Board Power Section . 39 6-17. IC Pin Function . 41 7. EXPLODED VIEWS 7-1. Case Section. 43 7-2. Chassis Section .44 7-3. Cassette Holder Section .45 7-4. Front Panel Section . 46 7-5. Tape Mechanism Section (Deck A: TCM-230ASR3/HSR3) (Deck A: TCM-230ASR4/HSR4) .47 8. ELECTRICAL PARTS LIST.

16、 48 RadioFans.CN 收音机爱 好者资料库 4 SECTION 1 GENERAL LOCATION OF PARTS AND CONTROLS 1U button 2RESET (Deck A) button 3MEMORY (Deck A) button 4RESET (Deck B) button 5MEMORY (Deck B) button 6AUTO REC LEVEL indicator 7REC LEVEL knob 8FADER button 9ARL button 10 SYNCHRO button 11 PHONES jack 12 HIGH/NOMAL bu

17、tton 13 (AMS) ) (Deck B) button 14 0 (AMS) (Deck B) button 15 (Deck B) button 16 (Deck B) button 17 REC r button Front Panel 30 18 (Eject) (Deck B) button 19 REC MUTING R button 20 PAUSE P button 21 p (Deck B) button 22 DOLBY NR OFF B/C switch 23 (Deck A) button 24 (Deck A) button 25 (Eject) (Deck A

18、) button 26 p (Deck A) button 27 (AMS) ) (Deck A) button 28 0 (AMS) (Deck A) button 29 PITCH CONTROL knob 30 PITCH CONTROL button 31 DIRECTION switch AMS is the abbreviation for Automatic Music Sensor. 1314151623242728 1112171819202122252629 10 8 9 2467135 31 5 SECTION 2 DISASSEMBLY Note : Follow th

19、e disassembly procedure in the numerical order given. 2-1. CASE 2-2. FRONT PANEL ASSEMBLY 1 Screw (BVTT 3x6) 2 Two Screws (Case 3 TP2) 3 Two Screws (Case 3 TP2) 4 Case ! Screw (BVTP 3x8) ! Screw (BVTP 3x8) ! Screw (BVTP 3x8) ! Two screws (BVTT 3x6) ! Claw ! Claw ! Front panel assy 9 CN1002 0 CN1003

20、2 CN807 1 CN5802 3 CN803 4 CNA806 5 Flat type wire (Deck A) ! CN002 6 Flat type wire (Deck B) 7 Screw (BVTP 3x8) 8Wire 6 2-3. CASSETTE LID ASSEMBLY (DECK A/B) 2-4. MECHANISM DECK ASSEMBLY (DECK A/B) 2 Four claws 1 Push the EJECT button. 3 Cassette lid assy 1 Two screws (BVTP 2.6x8) 3 Mechanism deck

21、assy 2 Two screws (BVTP 2.6x8) 7 2-5. LEAF SW (PB) BOARD (DECK A), LEAF SW (REC/PB) BOARD (DECK B) 1 Two screws (PS 2.6x6) 2 Capstan motor assy 8 Belt (capstan) 3 Wires 5 Screw (BVTT 2x4) 4 Screw (BVTT 2x4) 6 Claws Claws 7 LEAF SW (PB) board (Deck A) LEAF SW (REC/PB) board (Deck B) When installing,

22、pull the belt (capstan) put around claws. a a b b 8 2-6. PINCH LEVER (FWD)/(REV) ASSEMBLY (DECK A/B) 2-7. FLYWHEEL (FWD)/(REV) ASSEMBLY (DECK A/B) 4 Pinch lever (FWD) assy 2 Pinch lever (REV) assy 1 Claw 3 Claw 1 Belt (FR2) 3 Flywheel (FWD) assy 6 Flywheel (REV) assy 4 Washer 7 Washer 2 Stopper wash

23、er 5 Stopper washer 9 2-8. MECHANICAL BLOCK ASSEMBLY (DECK A/B) 2-9. HEAD RELAY (PB) BOARD (DECK A), HEAD RELAY (REC/PB) BOARD (DECK B) 2 Two screws (BVTT 2x3.5) 1 Torsion spring 5 Reverse slider 4 Mechanical block assy 3 Two screws (BVTT 2x3.5) 3 Tension spring (HEAD) 2 HEAD RELAY (PB) board (Deck

24、A) HEAD RELAY (REC/PB) board (Deck B) 1 Screw (BVTT 2x4) 4 Head deck assy 10 RESET0 MEMORY1 0 (AMS)2 (AMS) )3 pGrid check display (*1) 4 5 DIRECTION MODE switch A dPLAY RELAY A deck side ButtonDisplay KEY CHECK & DISPLAY CHECK MODE While pressing the (A deck) and REC MUTING R buttons with the power

25、off, press the U button to turn on the power. The fluorescent indicator tube displays the number or special message corresponding to the button pressed. The message displayed differs according to the position of the switch. SECTION 3 SERVICE MODE RESET0 MEMORY1 HIGH/NOMAL2 0 (AMS)3 (AMS) )4 pSegment

26、 check display (*2) 5 6 PAUSE P7 REC MUTING R8 REC r9 FADERA ARLb SYNCHROAll lit DOLBY NR switch OFF BPLAY C B deck side ButtonDisplay Grit check display (*1) Segment check display (*2) RMS 11 PRECAUTION 1. Clean the following parts with a denatured alcohol-moistened swab : record/playback/erase hea

27、dpinch roller rubber beltscapstan idlers 2. Demagnetize the record/playback head with a head demagne- tizer. 3. Do not use a magnetized screwdriver for the adjustment. 4. After the adjustments, apply suitable locking compound to the parts adjusted. 5. The adjustments should be performed with the rat

28、ed power sup- ply voltage unless otherwise noted. Torque Measurement SECTION 5 ELECTRICAL ADJUSTMENTS SECTION 4 MECHANICAL ADJUSTMENTS PRECAUTION 1. The adjustment should be performed in the publication. (Be sure to male playback adjustment at first.) 2. The adjustments and measurement should be per

29、formed for both L-CH and R-CH. Switch position DOLBY NR switch: OFF DIRECTION MODE switch : A Standard record position : Deliver the standard input signal level to input jack and set the REC LEVEL knob to obtain the standard output signal level as follows. Record Mode 0 dB = 0.775 V Standard Input L

30、evel Test Mode 1. While pressing the (DECK A) and REC MUTING R buttons with the power off, press the U button to turn on the power. The fluorescent display tube lights up for about one sec- ond, and the test mode is set. The test mode performs the fol- lowing two special functions. Playback speed sw

31、itching function Pressing the HIGH/NORMAL button switches the playback speed between standard/double speed. Counter RESET & MEMORY function Resets the counter when recording starts. When rewound with the 0 (AMS) button after recording, stops at the point where recording started. 2. To release the te

32、st mode, turn OFF the power switch. ModeTorque meterMeter reading ForwardCQ-102C 30 to 65 g cm (0.42 to 0.90 oz inch) Forward back tension CQ-102C DECK A : 1 to 6 g cm (0.014 to 0.083 oz inch) DECK B : 2 to 9 g cm (0.028 to 0.125 oz inch) ReverseCQ-102RC 30 to 65 g cm (0.42 to 0.90 oz inch) Reverse

33、back tension CQ-102RC 1 to 6 g cm (0.014 to 0.083 oz inch) FF/REWCQ-201B 70 to 120 g cm (0.97 to 1.67 oz inch) set + AF OSC attenuator 10 k 600 LINE IN level meter LINE OUT 47 k Standard Output Level Test Tape Input terminalLINE IN source impedance10 k input signal level0.5 V (3.8 dB) Input terminal

34、LINE IN source impedance10 k input signal level0.5 V (3.8 dB) TapeContentsUse P-4-A10010 kHz, 10 dBAzimuth Adjustment WS-48B3 kHz, 0 dBTape Speed Adjustment P-4-L300315 Hz, 0 dBPB Level Adjustment 12 Record/Playback Head Azimuth Adjustment DECK A DECK B Procedure: 1. Forward Playback Mode 2. Turn th

35、e adjustment screw for the maximum output levels. If these levels do not match, turn the adjustment screw until both of output levels match together within 1 dB. 3. Playback Mode 4. Change the reverse playback mode and repeat the steps 1 to 3. 5. After the adjustment, lock the adjustment screws with

36、 suitable locking compound. Adjustment Location: record/playback head Tape speed Adjustment DECK A DECK B Adjust DECK A first Procedure: Forward Playback Mode (High speed adjustment) 1. Press the PITCH CONTROL button to set to OFF . 2. Set to test mode. (Refer to page 11.) 3. Press the button to pla

37、yback. 4. Press the HIGH/NORMAL button to playback at double speed. 5. Adjust RV316 (DECK A), RV416 (DECK B) so that the fre- quency counter reading becomes 5,980 180 Hz. (Normal speed adjustment) 6. Press the button to playback. 7. Press the HIGH/NORMAL button to playback at normal speed. 8. Adjust

38、 RV317 (DECK A), RV417 (DECK B) so that the fre- quency counter reading becomes 3,000 90 Hz. (Pitch control adjustment) (DECK A) 9. Press the PITCH CONTROL button to set to ON . 10. Set PITCH CONTROL knob to mechanical center. 11. Press the button to playback. 12. Adjust RV318 so that the frequency

39、counter reading becomes 2,990 90 Hz. Adjustment Location: MAIN board (See page 14.) Sample value of wow and flutter W.RMS (JIS) less than 0.3% . (test tape : WS-48B) Playback Level Adjustment DECK A DECK B Procedure: Forward Playback Mode Adjust DECK A : RV111 (L-CH), RV211 (R-CH) and DECK B : RV121

40、 (L-CH), RV221 (R-CH) so the level meter read- ing becomes the adjustment limits below. Adjustment Value: LINE OUT level : 7.7 0.5 dB (0.301 to 0.338 V) Level difference between channels : within 0.5 dB Confirm that the LINE OUT level does not change in playback mode while changing the mode from pla

41、yback to stop several times. Adjustment Location: MAIN board (See page 14.) set test tape P-4-A100 (10 kHz, 10 dB) level meter LINE OUT 47 k within 1 dB within 1 dB output level R-CH peak R-CH peak L-CH peak L-CH peak screw position screw position VH Screen Pattern set In phase4590135180 goodwrong 4

42、7 k 47 k L-CH R-CH test tape P-4-A100 (10 kHz, 10 dB) LINE OUT oscilloscope forward sidereverse side adjustment screws set frequency counter 47 k LINE OUT test tape WS-48B (3 kHz, 0 dB) set test tape P-4-L300 (315 Hz, 0 dB) level meter LINE OUT 47 k 13 Bias Consumption Current Adjustment DECK B This

43、 adjustment should be performed when replacing the head assy or the bias oscillator transformer (T141, T241). Setting: REC LEVEL knob : standard recording position (See page 11.) Procedure: 1. Connect the digital voltmeter to test point TP441. 2. Set RV141 (L-CH), RV241 (R-CH) to mechanical center.

44、3. Press the button to playback. 4. Adjust T141 (L-CH), T241 (R-CH) so that the digital voltmeter reading becomes minimum. Adjustment Value: Maximum 220 mV Adjustment Location: MAIN board (See page 14.) Record Bias Adjustment DECK B Setting: REC LEVEL knob : standard record position (See page 11.) Procedure: 1. Set to test mode (See page 11.) 2. Insert a tape into deck B, press the REC r button and then press the button to start recording. 3. Record Mode Record Level Adjustment DECK B Setting: REC LEVEL knob : standard record position (See page 11.) Procedure: 1. Set to