Kenwood-RDM23-cs-sm 维修电路原理图.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
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
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