Kenwood-RDM23-cs-sm 维修电路原理图.pdf

《Kenwood-RDM23-cs-sm 维修电路原理图.pdf》由会员分享，可在线阅读，更多相关《Kenwood-RDM23-cs-sm 维修电路原理图.pdf（30页珍藏版）》请在收音机爱好者资料库上搜索。

1、70%COMPACT AUDIO SYSTEMRD-M23SERVICE MANUAL(For M,X type) 2001-9 PRINTED IN KOREAB51-5756-00 (K/K) 547Front cabinet (A60-2147-08)Knob (K29-8085-08)Clear panel(DISK) (B10-3764-08)In compliance with Federal Regulations, following are repro-duction of labels on, or inside the product relating to laser

2、prod-uct safety.KENWOOD-Corp. certifies this equipment conforms to DHHSRegulations No.21 CFR 1040. 10, Chapter 1, subchapter J.DANGER : Laser radiation when open and interlock defeated. AVOID DIRECT EXPOSURE TO BEAM.Plate (B03-3900-08)CD lid(J19-6268-08)Knob (K29-8084-08)Rear panel (A80-4203-08)Digi

3、tal out jack (W02-2878-08)Bottom cabinet (A10-3564-08)Socket (E03-0384-08)Terminal (E21-0040-08)Terminal (E70-0149-08)Headphone jack (E11-0944-08)Socket (E63-1228-08)RadioFans.CN 收音机爱 好者资料库AC power lead x1(E30-7240-08): X(E30-7237-08): MRemote control x1(A70-1547-08)Battery cover(A09-1243-08)FM ante

4、nna x1(T90-0891-08)AM loop antenna x1(T90-0890-08)AAA size battery(UM-4, R03, HP-16 or similar)x2RD-M232CONTENTS / ACCESSORIESCONTENTS / ACCESSORIES . 2DISASSEMBLY FOR REPAIR.3BLOCK DIAGRAM .5TROUBLE SHOOTING.7TEST MODE .10ADJUSTMENT.13WAVR FORM.15PARTS DESCRIPTIONS .16PC BOARD . 17SCHEMATIC DIAGRAM

5、 . 21EXPLODED VIEW .29PARTS LIST.31SPECIFICATIONS .Back coverContentsAccessoriesTroubleshootingIf trouble occursWhen this product is subjected to strong external interference(mechanical shock, excessive static electricity, abnormal supplyvoltage due to lightning, etc.) or if it is operated incorrect

6、ly, it maymalfunction.If such a problem occurs, do the following:Caution:This operation will erase all data stored in memory including clock,timer settings, tuner preset, and CD programme.1Set the unit to the stand-by mode and turn the power on again.2If the unit is not restored in step 1, unplug an

7、d plug in the unit, and then turn the power on.3If neither step 1 nor 2 restores the unit, do the following:Press the ON/STAND-BY button to enter the power stand-by mode.Unplug the AC power lead from the AC INPUT socket on the unit.Whilst pressing down the MEMORY/SET button and the / button, plug th

8、e AC power lead into the AC INPUT socket on the unit.AC INPUTAttentionPlease contact our KENWOOD Service Department in your side if you want the service information; Circuit Description. FullDescribed Parts list and so. Information is available to you by internet from us.CLASS 1LASER PRODUCTThe mark

9、ing this product has beenclassified as Class 1. It means that thereis no danger of hazardous radiatiooutside the product.RadioFans.CN 收音机爱 好者资料库RD-M233DISASSEMBLY FOR REPAIR1Rear panel/Terminal PWB1. Screw . (A1) x78-12. Socket . (A2) x23. Screw . (A3) x38-1,22Top cabinet1. Screw . (B1) x28-22. Hook

10、 . (B2) x53. Flat Cable. (B3) x14. Socket . (B4) x73Tuner PWB1. Screw . (C1) x29-12. Socket . (C2) x14Power PWB1. Socket . (D1) x19-12. Hook . (D2) x15Main PWB1. Socket . (E1) x19-12. Screw . (E2) x86Display PWB1. Screw . (F1) x49-22. Hook . (F2) x47CD Mechanism1. Screw . (G1) x49-28Gear Box1. Screw

11、 . (H1) x19-22. Holder. (H2) x13. Lever . (H3) x14. Screw . (H4) x25. Lever . (H5) x19LED PWB1. Screw . (J1) x19-2STEPREMOVALPROCEDUREFIGURENote:After removing the connector for the optical pickup from theconnector, wrap the conductive aluminium foil around thefront end of connector remove to protec

12、t the optical pickupfrom electrostatic damage.Caution on DisassemblyFollow the below-mentioned notes when disassemblingthe unit and reassembling it, to keep it safe and ensureexcellent performance:1. Take compact disc out of the unit.2. Be sure to remove the power supply plug from the walloutlet bef

13、ore starting to disassemble the unit.3. Take off nylon bands or wire holders where they need tobe removed when disassembling the unit. After servicingthe unit, be sure to rearrange the leads where they werebefore disassembling.4. Take sufficient care on static electricity of integratedcircuits and o

14、ther circuits when servicing.(A1) x23 x10mm(A1) x33 x10mm(A1) x23 x10mmRear PanelTop Cabinet(A2) x2(A3) x23 x10mmRear PanelTerminal PWBFigure 8-1(B1) x22.5 x8mm(B4) x2(A3) x13 x8mmLug(B4) x4(B3) x1Hook(B2) x3HOOK(B2) x2(B4) x1CD MechanismMain PWBPower PWBHookUpSlideBottom CabinetTop CabinetTop Cabin

15、etBottom CabinetFigure 8-2(C1) x13 x8mm(E2) x73 x8mm(E2) x13 x14mm(D2) x1(C1) x13 x6mm(D1) x1(E1) x1Power PWBHolder PWBTuner PWBMain PWB(C2) x1Tuner PWB(C2) x1Main PWBHookBottom CabinetFigure 9-1Figure 9-2(G1) x42.5 x10mm(H1) x13 x8mm(H2) x1(H5) x1(H4) x22.5 x10mm(J1) x12.5 x10mm(F1) x42.5 x10mmHook

16、(F2) x4Display PWBLED PWBSwitch PWBGear BoxCD MechanismTop CabinetHolder PWB(H3) x1BracketRD-M234DISASSEMBLY FOR REPAIRHow to remove the CD lid (See Fig. 10-1.)Perform steps 1,2 and 8 of the disassembly method to removethe gear box.(See page 8,9)1. Remove the switch PWB.2. Remove the screws (A1) x 4

17、 pcs., to remove the gear boxlid.3. Remove the gears (A2) x 1 pc. and (A3) x 1 pc.4. Remove the screws (A4) x 2 pcs., to remove the motor.Caution:Be careful so that the gear is not damaged.(The damage gear emits noise during searching.)Figure 10-1Figure 10-2(A1) x12.5 x10mm(A1) x32.5 x12mm(A2) x1(A3

18、) x1(A4) x22 x5mmSwitch PWBCD Lid MotorCD MECHANISM SECTION (See Fig. 10-2.)Perform steps 1,2 and 7 of the disassembly method to removethe CD mechanism.(See page 8,9)1. Remove the mechanism cover, paying attention to thepawls (A1)x 4 pcs.2. Remove the screws (A2) x 2 pcs., to remove the shaft (A3)x

19、1 pc.3. Remove the stop washer (A4) x 1 pc., to remove the gear (A5) x 1 pc.4. Remove the pickup.Note:After removing the connector for the optical pickup from theconnector, wrap the conductive aluminium foil around thefront end of connector remove to pretect the optical pickupfrom electrostatic dama

20、ge.Pickup unit(A2) x22.6 x6mm(A1) x4CD MechanismShaft(A3) x1Gear(A5) x1Stop Washer(A4) x1Mechanism CoverREMOVING AND REINSTALLING THE MAIN PARTSRD-M235BLOCK DIAGRAM2 1 VOLTAGEREGULATOR3 1 3 4 2 1 USWD_5R6VP_CONTD_GND3 2 1 AC INPUTSOCKETAC 110/127/220/230240V, 50/60Hz AC POWER SUPPLY CORDVOLTAGESELEC

21、TORPOWERTRANSFORMER(SUB) FROMDISPLAY PWBPOWER PWB-BCNP651SO655 SW651 IC681KIA7805API D6881N4004RLY601CNP707T681D681D684Q683Q6814 3 2 1 4 3 2 1 3 5 5 7 7 9 9 1 POWERTRANSFORMER(MAIN) TFT651T2.5A L 250VCNP801F651T1.25A L 250VF653Q606Q607D651D654D657D660Q801Q101Q102Q601Q602Q605Q603Q604Q608Q609CD +BCNP6

22、52FROMDISPLAY PWB+BCD_6R2V +B2+B3+B4+B6M_12V A_12VPOWER AMP.IC901LA4282 L-CHL-CHR-CHR-CHL-CHR-CHSPEAKER TERMINAL+ + SO601 HEADPHONES1 2 3 4 5 9 10J601VSS VDDIC401 LC75342M1514131211109 1718192021222324 2526272829168 7 6 5 4 3 2 1 CEDI30CLLOGIC TUN L CD LTUN RR-CH OUTL-CH OUTA_12VNCFUNCTION/VOLUMEEQU

23、ALIZER Q901Q902Q908Q907Q861Q802AUX RAUX LCD R765432189 10 1112 13 14 15CNP702CLID_SW CLID_UP CLID_PROCLID_DW BUCKBUS2BUS0BUS1BUS3CCE CD_RESPU_IN LIGHT CD_STBDIMMER SBADFEOFENVRORFRPRFISRFGORFGCAGCIRFOGNDRFNTEOTEN2VROTEBSELLDOMDITN1TPIFPIFNIVCCSERVO PRE AMP.IC801TA2109FSERVO/SIGNAL CONTROLIC802TC9462

24、F DOUTTERMINALPWBVSS VSS VSS AVSS XVSS TESIOOTESINTESI01VSSVSSPXIDVSLDVSRPDO TMAXVCOREVRFI RFCTLPFNLPFOPVREVTSINVREFX80116.93MHzXOXIVDD VDD VDD VDD VDD XVDD AVDD 2VREFSELRFGCTEBCFOOTRO TEI TEZIRFRPFEI SBADP2VREFSWITCHINGMUTEVOLTAGEREGURATORVOLTAGEREGURATOR+B6R-CH L-CH SO401VIDEO/AUXINPUTCD LID MOTOR

25、 DRIVER12356789IC805TA7291S 11 10 9 8 7 6 5 4 3 2 1 CECLDISDFM STDOA_12VD_GNDTUN LTUN RA_GND11 1 2 3 4 5 6 7 8910 SDSTEREODOCEDICLCD +BP_MUTEP_STBD_GND A_12V +B1+B3+B6+B2+B4CNP703CNP307TOTUNER PWBFROMDISPLAY PWBFROMDISPLAY PWBLED PWBSWITCH PWBCD LIDOPEN/CLOSESW802 CD LIDOPEN/CLOSEMOTORMM801FOCUS/TRA

26、CKING/SPIN/SLED DRIVER12345678991011121316 17 18 1921 22 23 24 25 26 27 28PO1-PO1+VO3-VO3+VIN3VG3VCCVCCBIASVG4VIN4VO4+VO4-OPOVO2-VO2+VIN2VG2GNDGNDGNDMUTEREG OTRBVG1VIN1VO1+VO1-IC804MM1469XHSPINDLEMOTORSLEDMOTORPICKUP INSP+ SPSP+ SLPU-IN GND FOTR+ MMCD MOTOR PWBNM802 NM801 NSW801CD_7V 5V+B2+B4+B7+B7+

27、B7ACBFE+B7+B7+B7LDMONFOCUS COIL1/2V5VTRACKING COIL PICKUP UNIT232422212019181716454038343332313028505657515248494647434244151413121110987654321DIGITALOUT 3 2 1 J8015355FMODMO1009097969392917879BUS0BUS1BUS2BUS3BUCK/CCE/RST8582ROLO142339627680946 15 243663 71 72 73 74 77 9581 86D_GND A_GND D_GND D_GND

28、 M_GND M_GND M_GND M_GND 25MAIN PWBAC 110/127/220/230240V, 50/60Hz 51291011 3 7 4 2 IN2 POWERGND1VCCOUT1FILOUT2GNDNF1 110V127V220V230240VF6542A 250VTFAMGNDFM75ohmsSO301 VSM AM RF OUT OUT OUT OUT ININCUT AM LOWFM/AM MPX VCO MPX INMO/ST L-CHR-CHFM AFCAM OSCAM OSC(AM/FM) PHASE PHASE IF OUTVCC FM DETSTE

29、REOSDGND AM IF REG AM MIXOUT ININFM IF 232221201918171615142413121110987654321PLL(TUNER)111098765431PDIF INAM INFM INVDDAINAOUTVSS X OUT22 21 20191817 16 1514 13 12FMFMMUTECEDICLDOMO/ST IF REQX INIC302 LC72131FM FRONT END123456798IC301 BF301BAND PASSFILTERTA7358AP123TP301456kHzX35132.768kHz8MHzQ351Q

30、360ZD3511011123458 9 67SDFM STDOCLCEDIA_12VD_GNDTUN_LTUN_RA_GNDTOMAIN PWBCNS307TUNER PWB385411100675756205966656463626160585354513946 49 50324784LCD701LCD DISPLAY123456789101112131415LIGHT BUS0BUS1BUS2BUS3BUCKCCECD_STBCLID_DWCLID_UPCLID_PROCLID_SWCD_RESPU-IN DIMMER LIGHT BUS0BUS1BUS2BUS3BUCKCCECD_ST

31、BCLID_DWCLID_UPCLID_PROCD_RESPU-IN DIMMER B-LIGHT123456789101112131415TOMAIN PWBTOMAIN PWBTOPOWER PWBTOMAIN PWBCNS702CNW702REMOTESENSORRX701 3 2 1 3 4 2 1 2 1 CNW707CNS707CNS652RESET VLC1VLC2VLC37 6 5 MMODVREFVREF+VSS 15 24 14 11 SYS_STOPPOWER 383713 12 10 9 X701X702OSC1OSC2XOXICLID_SW SW711713SW721

32、,722SW725727SW709SW718SW710KEY1KEY218 17 16 SYSTEM MICROCOMPUTER/FL DRIVERIC701IX0039SJ D_GND A_24V A_12V P_STB P_MUTECD+BDICECLDOSTEREOSD11109876543211110987654321CNW703CNS703CD+BSTEREOSDDICLDOCE28272625SURRPSTB PMUTE454443DISPLAY PWBQ708Q707Q709Q706ANTENNATERMINALAM BandCoverage fLFM MUTELEVELAM I

33、FFM IFAM Tracking fLFM RFVD301VD303VD302FM IF DET/FM MPX/AM IFIC303LA1832S +5V+5VVT+5V+5V+BFM +B+5VFM +B+5VT302T306T304T351CF303L302FM ANT.FM BandCoverage fLFM +BFM +BL303FM OSC.CF302FM IFFM IFCF352CF351AM IFSWITCHINGSWITCHINGRESETSWITCHINGQ306Q302Q701Q702Q703VR351X3524.5MHzVOLTAGEREGURATORCOM0COM3S

34、EG0SEG33REMOCON P_CONTUSWD_5R6VD_GNDPCONTVDDGND LED701 LED702LED PWBRD-M236BLOCK DIAGRAMRD-M237Cleaner LiquidCleaning DiscPARTS CODE: UDSKA0004AFZZHOW TO USE1. Using the brush in the cleaner cap, apply 1 or 2 drops of the cleaning fluid to the brush on the CD cleaner disc which hasthe mark next to i

35、t.2. Place the CD cleaner disc onto the CD disc tray with the brush side down, then press the play button.3. You will hear music for about 20 seconds and the CD player will automatically stop. If it continues to turn, press the stop button.CAUTIONThe CD lens cleaner should be effective for 30 - 50 o

36、perations, however if the brushes become worn out earlier then pleasereplace the cleaner disc.If the CD cleaner brushes become very wet then wipe off any excess fluid with a soft cloth.Do not drink the cleaner fluid or allow it to come in contact with the eyes. In the event of this happening then dr

37、ink and / orrinse with clean water and seek medical advice.The CD cleaner disc must not be used on car CD player or on computer CD ROM drives.All rights reserved. Unauthorized duplicating, broadcasting and renting product is prohibited by law.When the CD does not functionWhen the CD section does not

38、 operate when the objective lens of the optical pickup is dirty, this section may not operate. Cleanthe objective lens, and check the playback operation. When this section does not operate even after the above step is taken,checkthe following items.Remove the cabinet and follow the troubleshooting i

39、nstructions.Track skipping and/or no TOC (Table Of Contents) may be caused by build up of dust other foreign matter on the laser pickuplens. Before attempting any adjustment make certain that the lens is clean. If not, clean it as mentioned below.Turn off the power, and wipe the lens softly using a

40、cleaning paper moistened with commercially available cleaning solution soas not to damage it.Be careful not to touch the lens with bare hands.Dust gradually accumulates on the objective lens during use, and it may degrade performance.To avoid this problem, use a cleaning disc designed for CD optical

41、 pickup lenses.Make sure that the disc is normal, and set the CD TEST MODE (STEP 1).Is the measured voltage as specified in circuit diagram?Check the main unit power supply circuit.NoYesNoIs Er-CD01 displayed?YesMove the pickup to most internal circumference side of disc.Turn the power off and reset

42、 the CD TEST MODE (STEP 1).Is PU ERROR not displayed?YesCheck the PWB pattern between pin 59 (CD_RES) of IC701 andpin 100 (/RST) of IC802.NoIs +5V applied to pin 100 (/RST) of IC802?YesIs CD Lid switch SW802ON condition ?NoDoes the CD TEST MODE advance from STEP 2?YesCheck the between pattern IC701

43、and SW802 If OK.Check the main unit power supply circuit.NoDoes the laser come on in CD TEST MODE STEP 2?Check the procedure in LASER FAILURE.YesDoes the CD TEST MODE advance from STEP 3 to STEP4?Check the procedure in FOCUS FAILURE.YesYesDoes the spindle motor rotate normally when the CD TESTMODE c

44、hanges from STEP 4 to STEP 3?YesIs the HF output on pin 38 of IC802 in CD TEST MODE STEP 5?Check the procedure HF ERROR.YesNoNoNoNoCheck the pattern between pin 58 (PU_IN) of IC701 andCNW803/CNS803.Check the between CNW803/CNS803 and PU-IN switch.Set ON condition the CDLid switch.Check the procedure

45、 in SPINDLE MOTOR CLV SERVOFAILURE.NoDoes the sled motormove ?NoDoes the sound heard when the optical pickup move to theselected play by the FF /REW key.Check the procedure NO SOUNDNoYesCheck the procedure inSLED MOTOROPERATING FAILURE .Does the LCD track number and time indicator work properly ?Che

46、ck the pattern between IC701 and LCD701.YesNoIs Er-CD01 displayed ?NoTurn the power off and then back on.Does the unit initialize properly and start playback when PLAYkey is pressed?Check the pattern between pin 58 (PU_IN) of IC701and CNW803/CNS803. Check the between CNW803/CNS803 and PU-IN switch.N

47、oYesCheck the procedure inHF ERROR.YesDoes the unit play in order in the FF mode?Check the procedure in TRACK SEARCH FAILUR.YesDoes playback continue for 30 seconds after the start ofplayback ?Check the procedure in SLED SERVO FAILURE.YesNormalNoNoYesTROUBLE SHOOTINGRD-M238Check the PWB pattern betw

48、een emiter of Q607 and emiter ofQ861. Laser failure.Is 0V applied to the pin 57 (SEL) of IC802 ?YesNoDoes the laser come on when pattern cut between pin 8 (SEL) ofIC801 and pin 57 (SEL) of IC802 ?Check the PWB pattern between IC701 and IC802 (BUCK/CCE/BUS03)YesYesNoCheck the peripheral parts of IC80

49、1 and Q801. If it is normal, theoptical pickup is faulty.NoCheck CNP802/CNW3. If it is normal, the optical pickup isfaulty.Is approx. 2V applied to the collector of Q801. Focus failure.Does the optical pickup move up and down when the disc isremoved?Is the following waveform ouput at the pin 43 (FEI

50、) of IC802when the disc is set?Is the waveform shown above input at the pin 44 (SBAD) ofIC802?YesYesNoNoThe optical pickup is faulty.Check as stated in item FOCUS SERVO SAWTOOTH WAVEFAILURE.YesCheck the periphery of IC801 and CNP802/CNW3. Is it normal?NoCheck the pattern between pin 13 of IC801 and