Kenwood-RDM-23-Service-Manual电路原理图.pdf

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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 p

2、rod-uct safety.KENWOOD-Corp. certifies this equipment conforms to DHHSRegulations No.21 CFR1040. 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)Digita

3、l 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)AC power lead x1(E30-7240-08): X(E30-7237-08): MRemote control x1(A70-1547-08)Battery cover(A09-1243-08)FM antenna x1(T90-0891-08)AM lo

4、op 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.21EXPLODED VIEW.29PARTS LIST

5、.31SPECIFICATIONS.Back coverContentsAccessoriesTroubleshootingIftroubleoccursWhen this product issubjected tostrong externalinterference(mechanical shock, excessivestatic electricity,abnormal supplyvoltage due tolightning,etc.) or if itis operated incorrectly, itmaymalfunction.If suchaproblemoccurs,

6、dothefollowing:Caution:Thisoperation willerase alldata storedin memoryincluding clock,timer settings,tunerpreset, and CD programme.1Set the unittothe stand-by mode and turn thepower onagain.2If the unitis notrestored instep1,unplugand pluginthe unit, and then turn the power on.3Ifneither step 1 nor

7、2 restores the unit, do the following:Press the ON/STAND-BYbutton to enter the power stand-by mode.Unplug the ACpower lead from the ACINPUT socketon theunit.Whilstpressing down the MEMORY/SETbuttonandthe / button,plugthe ACpowerleadinto the ACINPUTsocket ontheunit.ACINPUTAttentionPlease contact our

8、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.CLASS1LASER PRODUCTThe marking this product has beenclassified as Class 1. It means that thereis no danger of hazardo

9、us radiatiooutside the product.RD-M233DISASSEMBLY FOR REPAIR1 Rear panel/Terminal PWB 1. Screw . (A1) x7 8-12. Socket . (A2) x23. Screw . (A3) x3 8-1,22 Top cabinet 1. Screw . (B1) x2 8-22. Hook . (B2) x53. Flat Cable . (B3) x14. Socket . (B4) x73 Tuner PWB 1. Screw . (C1) x2 9-12. Socket . (C2) x14

10、 Power PWB 1. Socket . (D1) x1 9-12. Hook . (D2) x15 Main PWB 1. Socket . (E1) x1 9-12. Screw . (E2) x86 Display PWB 1. Screw . (F1) x4 9-22. Hook . (F2) x47 CD Mechanism 1. Screw . (G1) x4 9-28 Gear Box 1. Screw . (H1) x1 9-22. Holder . (H2) x13. Lever . (H3) x14. Screw . (H4) x25. Lever . (H5) x19

11、 LED PWB 1. Screw . (J1) x1 9-2STEP REMOVAL PROCEDURE FIGURENote:After removing the connector for the optical pickup from theconnector, wrap the conductive aluminium foil around thefront end of connector remove to protect the optical pickupfrom electrostatic damage.Caution on DisassemblyFollow the b

12、elow-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 before starting to disassemble the unit.3. Take off nylon bands or wire holders whe

13、re 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 other circuits when servicing.(A1) x23 x10mm(A1) x33 x10mm(A1) x23 x10mmRear Pane

14、lTop 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 CabinetBottom CabinetFigure 8-2(C1) x13 x8mm(E2) x73 x8mm(E2) x13 x14mm(D2) x1(C1) x1

15、3 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(F2) x4Display PWBLED PWBSwitch PWBGear BoxCD MechanismTop CabinetHolder PWB(H3)

16、 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 pcs., to remove the gear boxlid.3. Remove the gears (A2) x 1 pc. and (A3) x 1 p

17、c.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) x1(A4) x22 x5mm Switch PWBCD Lid MotorCD MECHANISM SECTION (See Fig. 10-2.)Per

18、form 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 1 pc.3. Remove the stop washer (A4) x 1 pc., to remove the gear(A5) x 1 pc.4. R

19、emove 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 damage.Pickup unit(A2) x22.6 x6mm(A1) x4CD MechanismShaft(A3) x1Gear(A5) x1Stop Wash

20、er(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 CORDVOLTAGESELECTORPOWERTRANSFORMER(SUB) FROMDISPLAY PWBPOWER PWB-BCNP651SO655 SW651 IC681KIA780

21、5API 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 +BCNP652FROMDISPLAY PWB+BCD_6R2V +B2+B3+B4+B6M_12V A_12VPOWER AMP.IC901LA4282 L-CHL-CH

22、R-CHR-CHL-CH R-CHSPEAKER TERMINAL+ + SO601 HEADPHONES1 2 3 4 5 9 10J601VSS VDDIC401 LC75342M15 14 13 12 11 10 9 17 18 19 20 21 22 23 24 25 26 27 28 29168 7 6 5 4 3 2 1 CE DI30CLLOGIC TUN L CD LTUN RR-CH OUTL-CH OUTA_12VNCFUNCTION/VOLUMEEQUALIZER Q901 Q902Q908 Q907Q861Q802AUX RAUX LCD R7654321 8 9 10

23、 11 12 13 14 15CNP702CLID_SW CLID_UP CLID_PROCLID_DW BUCK BUS2 BUS0BUS1BUS3CCE CD_RES PU_IN LIGHT CD_STB DIMMER SBADFEOFENVRORFRPRFISRFGORFGCAGCIRFOGNDRFNTEOTEN2VROTEBSELLDOMDITN1TPIFPIFNIVCCSERVO PRE AMP.IC801TA2109FSERVO/SIGNAL CONTROLIC802TC9462F DOUTTERMINALPWBVSS VSS VSS AVSS XVSS TESIOO TESIN

24、TESI01 VSS VSSPXI DVSLDVSRPDO TMAXVCOREVRFI RFCTLPFNLPFOPVREVTSINVREFX80116.93MHzXOXIVDD VDD VDD VDD VDD XVDD AVDD 2VREFSELRFGCTEBCFOOTRO TEI TEZIRFRPFEI SBADP2VREFSWITCHINGMUTEVOLTAGEREGURATORVOLTAGEREGURATOR+B6R-CH L-CH SO401VIDEO/AUXINPUTCD LID MOTOR DRIVER12356 789IC805TA7291S 11 10 9 8 7 6 5 4

25、3 2 1 CECLDISDFM STDOA_12VD_GNDTUN L TUN R A_GND11 1 2 3 4 5 6 7 8 9 10 SDSTEREODO CEDICLCD +BP_MUTEP_STBD_GND A_12V +B1+B3+B6+B2+B4CNP703CNP307TOTUNER PWBFROMDISPLAY PWBFROMDISPLAY PWBLED PWBSWITCH PWBCD LIDOPEN/CLOSESW802 CD LIDOPEN/CLOSEMOTORMM801FOCUS/TRACKING/SPIN/SLED DRIVER1234567899101112131

26、6 17 18 19 21 22 23 24 25 26 27 28PO1- PO1+ VO3- VO3+ VIN3 VG3 VCC VCC BIAS VG4 VIN4 VO4+ VO4-OPO VO2-VO2+VIN2 VG2GNDGND GNDMUTEREG OTRB VG1 VIN1VO1+ VO1-IC804MM1469XHSPINDLEMOTORSLEDMOTORPICKUP INSP+ SPSP+ SLPU-IN GND FOTR+ MMCD MOTOR PWBNM802 NM801 NSW801CD_7V 5V+B2+B4+B7+B7+B7ACBFE+B7+B7+B7LDMONF

27、OCUS COIL1/2V5VTRACKING COIL PICKUP UNIT232422212019181716454038343332313028505657515248494647434244151413 121110987654321DIGITALOUT 3 2 1 J8015355FMODMO1009097969392917879BUS0BUS1BUS2BUS3BUCK/CCE/RST8582ROLO142339627680946152436 63 71 72 73 74 77 95 81 86D_GND A_GND D_GND D_GND M_GND M_GND M_GND M_

28、GND 25MAIN PWBAC 110/127/220/230240V, 50/60Hz 5 12910 11 3 7 4 2 IN2 POWER GND1VCC OUT1FIL OUT2GNDNF1 110V 127V 220V 230240VF6542A 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 DETSTEREOSDGND AM I

29、F REG AM MIX OUT ININFM IF 23 22 21 20 19 18 17 16 15 1424 13121110987654321PLL(TUNER)111098765431PDIF INAM INFM INVDDAINAOUTVSS X OUT22 21 20 19 18 17 16 15 14 13 12FMFM MUTECE DI CL DO MO/ST IF REQX INIC302 LC72131FM FRONT END1 2 3 4 56 7 98IC301 BF301BAND PASSFILTER TA7358AP1 2 3TP301456kHzX35132

30、.768kHz8MHzQ351Q360ZD3511011123458 9 67SDFM STDOCLCEDIA_12VD_GNDTUN_LTUN_RA_GNDTOMAIN PWBCNS307TUNER PWB385411 100 6757562059666564636261605853545139 46 49 50324784LCD701LCD DISPLAY123456789101112131415LIGHT BUS0BUS1BUS2BUS3BUCKCCECD_STBCLID_DWCLID_UPCLID_PROCLID_SWCD_RESPU-IN DIMMER LIGHT BUS0BUS1B

31、US2BUS3BUCKCCECD_STBCLID_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 X701X702OSC1OSC2XOXICL

32、ID_SW SW711713SW721,722SW725727SW709SW718SW710 KEY1KEY218 17 16 SYSTEM MICROCOMPUTER/FL DRIVERIC701IX0039SJ D_GND A_24V A_12V P_STB P_MUTECD+BDICECLDOSTEREOSD11109876543211110987654321CNW703CNS703CD+B STEREO SDDI CLDO CE28272625SURR PSTB PMUTE454443DISPLAY PWBQ708Q707Q709Q706ANTENNATERMINALAM BandCo

33、verage fLFM MUTELEVELAM IFFM 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 IF FM IFCF352CF351AM IFSWITCHINGSWITCHINGRESETSWITCHINGQ306Q302Q701Q702Q703VR351X3524.5MH

34、zVOLTAGEREGURATORCOM0 COM3 SEG0SEG33REMOCON 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

35、 which hasthe mark next to it.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 shoul

36、d be effective for 30 - 50 operations, 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 eve

37、nt of this happening then drink 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 function

38、When the CD section does not 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

39、follow the troubleshooting instructions.“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

40、 wipe the lens softly using a 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 cleanin

41、g disc designed for CD optical 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

42、 disc.Turn the power off and reset 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

43、 2“?YesCheck the between pattern IC701 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 sp

44、indle motor rotate normally when the CD TESTMODE changes 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 s

45、witch.Set ON condition the CDLid switch.Check the procedure 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 SOUND“NoYesCheck the procedure in“SLED MOTOROPERATING FAILURE

46、“.Does the LCD track number and time indicator work properly ? Check 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.NoYesCheck the procedure in“HF ERROR“.