Sony-TCTX333-tape-sm 维修电路原理图.pdf

1 TC-TX333MICROFILMUS ModelAEP ModelUK ModelE ModelTourist ModelSERVICE MANUALSPECIFICATIONSRecording system4-track 2-channel stereoFrequency response(DOLBY NR OFF)50 14,000 Hz ( 3 dB),using Sony TYPE Icassettes50 15,000 Hz ( 3 dB),using Sony TYPE IIcassettesInputTAPE IN (phono jacks):impedance 47 kilohmsOutputTAPE OUT (phono jacks):voltage 550 mVimpedance 47 kilohmsGeneralPower requirementsUS model:120 V AC, 60 HzAEP, UK model:220 230 V AC, 50 / 60 HzE, Tourist model:110 120 V or 220 240 VAC, 50 / 60 HzAdjustable with thevoltage selectorPower consumption12 WDimensionsApprox. 215 60 195mm (w / h / d)incl. projecting parts andcontrolsMassApprox. 2.5 kgSupplied accessories:Audio connecting cords(2)Design and specifications are subject to changewithout notice.Model Name Using Similar MechanismTC-TX313/TX515Tape Transport Mechanism Type TC-TX333 is the stereo cassette deckthat can be used only with sectionDHC-MD333.STEREO CASSETTE DECKSAFETY-RELATED COMPONENT WARNING!COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINEWITH MARK ! ON THE SCHEMATIC DIAGRAMS AND INTHE PARTS LIST ARE CRITICAL TO SAFE OPERATION.REPLACE THESE COMPONENTS WITH SONY PARTS WHOSEPART NUMBERS APPEAR AS SHOWN IN THIS MANUAL ORIN SUPPLEMENTS PUBLISHED BY SONY.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.Dolby noise reduction manufactured under license from Dolby Labo-ratories Licensing Corporation.“DOLBY” and the double-D symbol a are trademarks of DolbyLaboratories Licensing Corporation.RadioFans.CN 收音机爱 好者资料库 2 TABLE OF CONTENTS1. GENERALParts and Controls. 32. TEST MODE2-1. Checking the Items of Test Mode . 43. DISASSEMBLY3-1. Top Cover. 53-2. Front Panel Assy . 53-3. Front Board . 63-4. Back Plate . 63-5. Bracket (Power Trans). 73-6. Main Board . 73-7. TCM Assy . 83-8. Deck Board. 83-9. Lever. 93-10. Tension Spring. 93-11. Housing . 103-12. Chassis . 103-13. Motor (A)/(B) Assy . 113-14. Head Plate . 113-15. Pinch Roller Assy. 123-16. Bracket (Head Unit) . 124. MECHANICAL ADJUSTMENTS. 135. ELECTRICAL ADJUSTMENTS. 136. DIAGRAMS6-1. Circuit Boards Location . 166-2. Printed Wiring Board Deck Section. 176-3. Schematic Diagram Deck Section. 186-4. Printed Wiring Boards Main Section . 206-5. Schematic Diagram Main Section. 236-6. Printed Wiring Board Front Panel Section. 276-7. Schematic Diagram Front Panel Section. 296-8. IC Pin Description. 307. EXPLODED VIEWS7-1. Top Cover Section . 327-2. Front Panel Section . 337-3. Chassis Section . 347-4. TCM Assy Section . 358. ELECTRICAL PARTS LIST. 36RadioFans.CN 收音机爱 好者资料库 3 SECTION 1GENERALParts and Controls1 1 / u (POWER) switchOnly the power to this set is turn on.2 Cassette slotWith a cassette inserted, the cassetteindicator is illuminated red when thepower is turned on.3 (eject) button4 (lower side play)/ (upper side play) buttonEven without cassette, the power tothis set and the DHC-MD333 will be turnedon when one of these buttons is pressed.5 (pause) button6 p (stop) button7 0/) (fast forward, fast backward/AMS)button8 r REC (recording) button9 CD SYNC (CD synchro) buttonThis button allows CD synchro recordingto be executed as this set is interlockedwith the DHC-MD333.0 DIRECTION switch! DOLBY NR (Dolby Noise Reduction) switchCassetteindicator 4 SECTION 2TEST MODE2-1. CHECKING THE ITEMS OF TEST MODEThe set allows you to check the items of the test mode although thismay not be directly related with the adjustment.1 Setting/Releasing the Test Mode:1) SettingWith 1 / u (POWER) OFF, short between test pin 1 and pin2 of CN09 on the LOW-VOLTAGE board. (See page 15.)Then, turn 1 / u (POWER) ON to enter the test mode.2) ReleasingOpen between pin 1 and pin 2 of CN09.2 Items of Test Mode1) Memory Stop1-1) In side A record mode, press the REW ( 0 ) button.The tape is rewind to the start point of recording and stopped.1-2) In side B record mode, press the FF ( ) ) button.The tape is rewind to the start point of recording and stopped.2) Memory Play2-1) In side A record mode, press the FWD Auto Play( ” + 0 ) buttons simultaneously. The tape is rewind tothe start point of recording and FWD played.2-2) In side B record mode, press the REV Auto Play( “ + ) ) buttons simultaneously. The tape is rewind tothe start point of recording and REV played.3) All LED FlickeringWhen no tape is inserted, all LED indicators are flickering.4) Aging OperationWhen tape with record erase preventing claw is inserted forboth sides A and B, enter the aging operation start commandby pressing p and CD SYNC simultaneously. The systemwill change the direction to one side and perform thefollowing operations:1 Rewind in REW mode until side A of tape is stopped.2 Playback tape in FWD mode for 1 minute.3 Pause mode.4 Record tape for 3 minutes.5 Forward tape in FF mode to the end of side A of tape.6 Shut off and switch to side B.7 Playback tape in REV mode for 1 minute.8 Pause mode.9 Record tape for 3 minutes.! Forward tape in FF mode to the end of side B of tape.! Shut off and switch to side A.! Repeat the procedure from 2 to !.! Pressing the STOP ( p ) button will release the set fromthese operations. 5 SECTION 3DISASSEMBLYNote : Follow the disassembly procedure in the numerical order given.3-1. TOP COVER3-2. FRONT PANEL ASSY1 screws (case 3 TP2)3 top cover2 screws (case 3 TP2)1 CN062 BVTT 3x83 claw4 claw5 front panel assy 6 3-3. FRONT BOARD3-4. BACK PLATE3 BVTP 3x84 claws1 BVTP 3x102 BVTP 3x85 back plate1 BVTP 2.6x82 BVTP 2.6x83 BVTP 2.6x84 FRONT board6 REC button5 PLAY button7 EJECT button8 POWER button 7 3-5. BRACKET (POWER TRANS)3-6. MAIN BOARD1 bind type (A)2 bracket (power trans)7 BVTP 3x86 BVTP 3x85 BVTP 3x104 BVTP 3x82 REC board1 PC board holders8 MAIN board3 connector 8 3-7. TCM ASSY3-8. DECK BOARD2 BVTP 3x101 BVTP 3x104 TCM assy3 BVTP 3x102 P 2x61 connector3 DECK board 9 3-9. LEVER3-10. TENSION SPRING3 BVTP 3x81 BVTP 3x84 tape guide (R)2 tape guide (L)6 Turn the loading motor and down the cassette holder.598712 10 3-11. HOUSING3-12. CHASSIS34214 belt (B)5 belt (A)3126789 11 3-13. MOTOR (A)/(B) ASSY3-14. HEAD PLATE4 motor (B) assy2 motor (A) assy13A31B2Note : On install, set the portions A and B. 12 3-15. PINCH ROLLER ASSY3-16. BRACKET (HEAD UNIT)3 bracket (head unit)212453 pinch roller assy (R)6 pinch roller assy (F)1 13 PRECAUTION1.Clean the following parts with a denatured-alcohol-moistenedswab :record/playback/erase headpinch rollerrubber beltscapstanidlers2.Demagnetize the record/playback/erase head with a headdemagnetizer. (Do not bring the head demagnetizer close to theerase head.)3.Do not use a magnetized screwdriver for the adjustments.4.After the adjustments, apply suitable locking compound to theparts adjusted.5.The adjustments should be performed with the rated powersupply voltage unless otherwise noted.Torque MeasurementModeTorque MeterMeter Reading35 80 g cmFWDCQ-102C(0.49 1.11 oz inch)FWD1 7 g cmBack tension(0.012 0.097 oz inch)35 80 g cmREVCQ-102RC(0.49 1.11 oz inch)REV1 7 g cmBack tension(0.012 0.097 oz inch)more than 40 g cmFF, REWCQ-201B(more than 0.56 oz inch)SECTION 5ELECTRICAL ADJUSTMENTSSECTION 4MECHANICAL ADJUSTMENTSPRECAUTION1.The adjustment should be performed in the publication.(Be sure to male playback adjustment at first.)2.The adjustments and measurement should be performed for bothL-CH and R-CH. Switch positionDOLBY NR switch : OFFDIRECTION switch : AStandard Input LevelInput terminalTAPE INsource impedance10 kinput signal level0.49 V ( 4 dB)Standard Output LevelOutput terminalTAPE OUTload impedance47 koutput signal level0.49 V ( 4 dB)Test TapeTypeSignalUsed forWS-48A3 kHz, 0 dBTape Speed AdjustmentP-4-L300315 Hz, 0 dBPB Level Adjustment0 dB = 0.775 V 14 Adjustment Limits : normal speedReading on frequency counter2,910 to 3,090 HzConfirm that the deviation between tape top and tape end is within3%.Adjustment Location : Capstan motor volume (See page 15.)Sample Value of Wow and flutterW. RMS (JIS) within 0.3%(test tape : WS-48A)Playback Level AdjustmentProcedure :1.Mode: FWD playback2.Adjust SFR03 (L-CH) and SFR04 (R-CH) on MAIN boardso that the reading on level meter meets the adjustment limitsbelow.TAPE IN315 Hz, 0.49 V ( 4 dB)TAPE IN1) 315 Hz2) 10 kHz43.6 mV ( 25 dB)TAPE OUTRecord Bias AdjustmentSetting :Set to the TEST mode. (See page 4.)Procedure :1.Mode: Recordfrequency counter47 k settest tapeWS-48A(3 kHz, 0 dB)Tape Speed AdjustmentProcedure :1.Mode: FWD playbackAdjustment Limits :TAPE OUT levelLevel differencebetween channels 4 2 dB (0.39 to 0.62 V)within 2 dBCheck that the TAPE OUT level does not change even if Playbackand Stop operation is repeated several times.Adjustment Location : MAIN board (See page 15.)TAPE OUTlevel meter47 k settest tapeP-4-L300(315 Hz, 0 dB)2.Mode: Playback3.Confirm playback the signal recorded in step 1 becomeadjustment level as follows.4.If these levels do not adjustment level, adjust SFR01 (L-CH)and SFR02 (R-CH) on REC board to repeat step 1 and 2.Adjustment Level :Difference of playback output of 10 kHz toplayback output of 315 Hz : 0 0.5 dBAdjustment Location : REC board (See page 15.)Record Level AdjustmentSetting :Set to the TEST mode. (See page 4.)Procedure :1.Mode: Record2.Mode: Playback3.Confirm playback the signal recorded in step 1 becomeadjustment level as follows.4.If these levels do not adjustment level, adjust SFR11 (L-CH)and SFR12 (R-CH) on REC board to repeat step 1 and 2.Adjustment Level :Playback output level of 315 Hz : 4 2 dB (0.39 to 0.62 V)Adjustment Location : REC board (See page 15.)TAPE OUTTAPE OUTlevel meter47 k setrecorded portionAF OSCattenuator10 k set600 blank tapeCS-123AF OSCattenuator10 k set600 blank tapeCS-123level meter47 k setrecorded portion 15 IC02CN03CN11_CN03_CN10CN05SFR04PLAYBACKLEVELADJ(R-CH)SFR03PLAYBACKLEVELADJ(L-CH)SFR11RECORDLEVELADJ(L-CH)SFR12RECORDLEVELADJ(R-CH)M1CAPSTAN/REELMOTORCN09TEST MODETAPESPEEDADJM2LOADINGMOTORMECHANISMDECKSFR02RECORDBIASADJ(R-CH)SFR01RECORDBIASADJ(L-CH)Adjustment Location : MAIN board (component side) LOW-VOLTAGE board (component side) REC board (component side) 16 SECTION 6DIAGRAMS6-1. CIRCUIT BOARDS LOCATIONTRANSFORMER boardSLIDE SW board (Singapore, Malaysia,Hong Kong model)LOW-VOLTAGE boardAMS boardREC boardMAIN boardMOTOR boardFRONT boardDECK boardPOWER board 30 6-8. IC PIN DESCRIPTION IC04 PD75108GF-N14-3BE (SYSTEM CONTROL)Pin No.Pin NameI/OPin Description1RVS REC RELAYORVS REC relay control output (Not used in this set.)2FWD REC RELAYOFWD REC relay control output (Not used in this set.)3RVS PLAY RELAYORVS PLAY relay control output (Not used in this set.)4FWD PLAY RELAYOFWD PLAY relay control output (Not used in this set.)5POWER OUTOPower output (Not used in this set.)6AMS OUTOAMS gain control output (Not used in this set.)7RESETIReset input (L : Reset)8XTALOscillator circuit (4.19 MHz)9XTALOscillator circuit (4.19 MHz)10NR OUTONoise reduction signal output (Not used in this set.)11REC/PBOREC/PB select output (H : REC, L : PB)12F/RORVS/FWD select output (H : RVS, L : FWD) (Not used in this set.)13BIASOBias oscillation control output (H : ON, L : OFF)14LINE MUTEOLine mute control output (H : OFF, L : ON)15PB.MUTEOPB mute control output (H : OFF, L : ON)16REC.MUTEOREC mute control output (H : OFF, L : ON)17TAPE 4OREC equalizer select output (H : METAL) (Not used in this set.)18TAPE 2OREC equalizer select output (H : CrO2)19TAPE 1OREC equalizer select output (H : NORMAL)20M.FWDOReel motor forward direction rotation output21M.REVOReel motor reverse direction rotation output22H.SPEEDOTape speed control output23L+OLoading motor forward direction rotation output24L-OLoading motor reverse direction rotation output25AU BUS OUTOAU BUS signal output26VSSGround27F.RECIMechanism deck FWD REC PROOF claw detection signal input (H : REC inhibit)28R.RECIMechanism deck RVS REC PROOF claw detection signal input (H : REC inhibit)29PACK INILoading detection signal input30AU BUS INIAU BUS signal input31AMS INIAMS signal input32KEY 1IKey switch input 133KEY 0IKey switch input 034S.PLAY MODEIMechanism deck tape position detection signal input35F.REELIMechanism deck FWD reel sensor detection signal input36R.REELIMechanism deck RVS reel sensor detection signal input37MODE SELIConnect to Ground in this set.38CrO2IMechanism deck CrO2 switch input39TAPE INIMechanism deck HALF switch input40TEST PINIInput for test mode. (L : Test mode)41NCIConnect to Ground in this set.42, 43NCONot used in this set.44POWER DOWN INIPower detection input45NR.LEDONR LED output (Not used in this set.)46PB.LEDOPLAYBACK LED output (Not used in this set.)47TAPE.LEDOCassette indicator LED output48CD SYC.LEDOCD SYNC LED output49REC.LEDOr REC LED output50.LEDO) LED output51.LEDO” LED output54.LEDO“ LED output55POWER(GRN)LEDO1 / u (POWER) LED output56POWER(RED)LEDO1 / u (POWER) LED output (Not used in this set.)57NCNot used in this set.58VDDPower supply pin59 61NCNot used in this set.62REC/PBOREC/PB select output (H : REC, L : PB)63, 64NCNot used in this set. 32 Ref. No.Part No.DescriptionRemarkRef. No.Part No.DescriptionRemarkSECTION 7EXPLODED VIEWSNNNOTE: The mechanical parts with no referencenumber in the exploded views are not supplied. Items marked “*” are not stocked sincethey are seldom required for routine service.Some delay should be anticipatedwhen ordering these items. -XX and -X mean standardized parts, sothey may have some difference from theoriginal one. Color Indication of Appearance PartsExample :KNOB, BALANCE (WHITE) . (RED)Parts Color Cabinets Color Accessories and packing materials aregiven in the last of this parts list.The components identified bymark ! or dotted line with mark.! are critical for safety.Replace only with part numberspecified.7-1. TOP COVER SECTION1336252478 AbbreviationSP: Singapore modelMY : Malaysia modelHK: Hong Kong modelJE: Tourist model17-685-872-09SCREW +BVTT 3X8 (S)24-951-620-01SCREW (2.6X8), +BVTP33-363-099-51SCREW (CASE 3 TP2)* 43-031-218-01TAPE GUIDE (L)* 53-031-219-01TAPE GUIDE (R)* 63-021-541-01TOP COVER73-031-313-01EVA CUSHION83-021-574-01EVC SPACER 33 7-2. FRONT PANEL SECTIONRef. No.Part No.DescriptionRemarkRef. No.Part No.DescriptionRemark61616059585754526356665165626453675561513-031-202-01FRONT PANEL523-031-205-01DOLBY KNOB533-031-309-01DOOR HOLDER543-031-203-01DOOR CASSETTE553-031-201-01DOOR SPRING563-031-204-01POWER BUTTON573-031-207-01EJECT BUTTON583-031-215-01REC.BUTTON593-031-206-01PLAY BUTTON BLOCK* 60A-2007-809-A FRONT BOARD, COMPLETE614-951-620-01SCREW (2.6X8), +BVTP623-020-401-01FOOT (FRONT)633-031-311-01PVC SHEET644-962-708-01EMBLEM (4-A), SONY653-022-176-01BRACKET (FLEXIBLE D)663-031-310-01KNOB PAD673-031-312-01PVC SHEET (B) 34 7-3. CHASSIS SECTIONRef. No.Part No.DescriptionRemarkRef. No.Part No.DescriptionRemark* 101A-2007-767-A MAIN BOARD, COMPLETE (SP,MY,HK,JE)* 101A-2056-691-A MAIN BOARD, COMPLETE (AEP,UK,US)1027-685-647-79SCREW +BVTP 3X10 TYPE2 N-S* 1033-020-425-01DECK CHASSIS (L)* 1043-020-434-01DECK CHASSIS (R)1057-685-646-79SCREW +BVTP 3X8 TYPE2 N-S* 1063-032-126-01BACK