Kenwood-RDM23-cs-sm 电路图 维修手册.pdf

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1、70% COMPACT AUDIO SYSTEM RD-M23 SERVICE MANUAL (For M,X type) 2001-9 PRINTED IN KOREA B51-5756-00 (K/K) 547 Front 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

2、 to laser prod- uct safety. KENWOOD-Corp. certifies this equipment conforms to DHHS Regulations 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 pane

3、l (A80-4203-08) Digital 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): M Remote control x1 (A70-1547-08)

4、Battery cover(A09-1243-08) FM antenna x1 (T90-0891-08) AM loop antenna x1 (T90-0890-08) AAA size battery (UM-4, R03, HP-16 or similar)x2 RD-M23 2 CONTENTS / ACCESSORIES CONTENTS / ACCESSORIES . 2 DISASSEMBLY FOR REPAIR.3 BLOCK DIAGRAM .5 TROUBLE SHOOTING.7 TEST MODE .10 ADJUSTMENT.13 WAVR FORM.15 PA

5、RTS DESCRIPTIONS .16 PC BOARD . 17 SCHEMATIC DIAGRAM . 21 EXPLODED VIEW .29 PARTS LIST.31 SPECIFICATIONS .Back cover Contents Accessories Troubleshooting If trouble occurs When this product is subjected to strong external interference (mechanical shock, excessive static electricity, abnormal supply

6、voltage due to lightning, etc.) or if it is operated incorrectly, it may malfunction. 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

7、the power on again. 2If the unit is not restored in step 1, unplug and 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 u

8、nit. Whilst pressing down the MEMORY/SET button and the / button, plug the AC power lead into the AC INPUT socket on the unit. AC INPUT Attention Please contact our KENWOOD Service Department in your side if you want the service information; Circuit Description. Full Described Parts list and so. Inf

9、ormation is available to you by internet from us. CLASS 1 LASER PRODUCT The marking this product has been classified as Class 1. It means that there is no danger of hazardous radiatio outside the product. RadioFans.CN 收音机爱 好者资料库 RD-M23 3 DISASSEMBLY FOR REPAIR 1Rear panel/Terminal PWB1. Screw . (A1)

10、 x78-1 2. Socket . (A2) x2 3. Screw . (A3) x38-1,2 2Top cabinet1. Screw . (B1) x28-2 2. Hook . (B2) x5 3. Flat Cable. (B3) x1 4. Socket . (B4) x7 3Tuner PWB1. Screw . (C1) x29-1 2. Socket . (C2) x1 4Power PWB1. Socket . (D1) x19-1 2. Hook . (D2) x1 5Main PWB1. Socket . (E1) x19-1 2. Screw . (E2) x8

11、6Display PWB1. Screw . (F1) x49-2 2. Hook . (F2) x4 7CD Mechanism1. Screw . (G1) x49-2 8Gear Box1. Screw . (H1) x19-2 2. Holder. (H2) x1 3. Lever . (H3) x1 4. Screw . (H4) x2 5. Lever . (H5) x1 9LED PWB1. Screw . (J1) x19-2 STEPREMOVALPROCEDUREFIGURE Note: After removing the connector for the optica

12、l pickup from the connector, wrap the conductive aluminium foil around the front end of connector remove to protect the optical pickup from electrostatic damage. Caution on Disassembly Follow the below-mentioned notes when disassembling the unit and reassembling it, to keep it safe and ensure excell

13、ent performance: 1. Take compact disc out of the unit. 2. Be sure to remove the power supply plug from the wall outlet before starting to disassemble the unit. 3. Take off nylon bands or wire holders where they need to be removed when disassembling the unit. After servicing the unit, be sure to rear

14、range the leads where they were before disassembling. 4. Take sufficient care on static electricity of integrated circuits and other circuits when servicing. (A1) x2 3 x10mm (A1) x3 3 x10mm (A1) x2 3 x10mm Rear Panel Top Cabinet (A2) x2 (A3) x2 3 x10mm Rear Panel Terminal PWB Figure 8-1 (B1) x2 2.5

15、x8mm (B4) x2 (A3) x1 3 x8mm Lug (B4) x4 (B3) x1 Hook (B2) x3 HOOK (B2) x2 (B4) x1 CD Mechanism Main PWB Power PWB Hook Up Slide Bottom Cabinet Top Cabinet Top Cabinet Bottom Cabinet Figure 8-2 (C1) x1 3 x8mm (E2) x7 3 x8mm (E2) x1 3 x14mm (D2) x1 (C1) x1 3 x6mm (D1) x1 (E1) x1 Power PWB Holder PWB T

16、uner PWB Main PWB (C2) x1 Tuner PWB (C2) x1 Main PWB Hook Bottom Cabinet Figure 9-1 Figure 9-2 (G1) x4 2.5 x10mm (H1) x1 3 x8mm (H2) x1 (H5) x1 (H4) x2 2.5 x10mm (J1) x1 2.5 x10mm (F1) x4 2.5 x10mm Hook (F2) x4 Display PWB LED PWB Switch PWB Gear Box CD Mechanism Top Cabinet Holder PWB (H3) x1 Brack

17、et RadioFans.CN 收音机爱 好者资料库 RD-M23 4 DISASSEMBLY FOR REPAIR How to remove the CD lid (See Fig. 10-1.) Perform steps 1,2 and 8 of the disassembly method to remove the gear box.(See page 8,9) 1. Remove the switch PWB. 2. Remove the screws (A1) x 4 pcs., to remove the gear box lid. 3. Remove the gears (

18、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 10-1 Figure 10-2 (A1) x1 2.5 x10mm (A1) x3 2.5 x12mm (A2) x1 (A3) x1 (A4) x2 2 x5mmSwitch PWB CD Lid Motor

19、 CD MECHANISM SECTION (See Fig. 10-2.) Perform steps 1,2 and 7 of the disassembly method to remove the CD mechanism.(See page 8,9) 1. Remove the mechanism cover, paying attention to the pawls (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

20、(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 the connector, wrap the conductive aluminium foil around the front end of connector remove to pretect the optical pickup from electrostatic damage. Pickup unit (A2) x2 2

21、.6 x6mm (A1) x4 CD Mechanism Shaft (A3) x1 Gear (A5) x1 Stop Washer (A4) x1 Mechanism Cover REMOVING AND REINSTALLING THE MAIN PARTS RD-M23 5 BLOCK DIAGRAM 2 1 VOLTAGE REGULATOR 3 1 3 4 2 1 USWD_5R6V P_CONT D_GND 3 2 1 AC INPUT SOCKET AC 110/127/220/ 230240V, 50/60Hz AC POWER SUPPLY CORD VOLTAGE SEL

22、ECTOR POWER TRANSFORMER (SUB) FROM DISPLAY PWB POWER PWB-B CNP651 SO655 SW651 IC681 KIA7805API D688 1N4004 RLY601 CNP707 T681 D681D684 Q683 Q681 4 3 2 1 4 3 2 1 3 5 5 7 7 9 9 1 POWER TRANSFORMER (MAIN) TF T651 T2.5A L 250V CNP801 F651 T1.25A L 250V F653 Q606 Q607 D651D654 D657D660 Q801 Q101 Q102 Q60

23、1 Q602 Q605 Q603 Q604 Q608 Q609 CD +B CNP652 FROM DISPLAY PWB +B CD_6R2V +B2 +B3 +B4 +B6 M_12V A_12V POWER AMP. IC901 LA4282 L-CH L-CH R-CH R-CH L-CHR-CH SPEAKER TERMINAL + + SO601 HEADPHONES 1 2 3 4 5 9 10 J601 VSS VDD IC401 LC75342M 1514131211109 1718192021222324 252627282916 8 7 6 5 4 3 2 1 CE DI

24、 30 CL LOGIC TUN L CD L TUN R R-CH OUT L-CH OUT A_12V NC FUNCTION/VOLUME EQUALIZER Q901Q902 Q908Q907 Q861 Q802 AUX R AUX L CD R 765432189 10 1112 13 14 15 CNP702 CLID_SW CLID_UP CLID_PRO CLID_DW BUCK BUS2 BUS0 BUS1 BUS3 CCE CD_RES PU_IN LIGHT CD_STB DIMMER SBAD FEO FEN VRO RFRP RFIS RFGO RFGC AGCI R

25、FO GND RFN TEO TEN 2VRO TEB SEL LDO MDI TN1 TPI FPI FNI VCC SERVO PRE AMP. IC801 TA2109F SERVO/SIGNAL CONTROL IC802 TC9462F DOUT TERMINAL PWB VSS VSS VSS AVSS XVSS TESIOO TESIN TESI01 VSS VSS PXI DVSL DVSR PDO TMAX VCOREV RFI RFCT LPFN LPFO PVREV TSIN VREF X801 16.93MHz XO XI VDD VDD VDD VDD VDD XVD

26、D AVDD 2VREF SEL RFGC TEBC FOO TRO TEI TEZI RFRP FEI SBAD P2VREF SWITCHING MUTE VOLTAGE REGURATOR VOLTAGE REGURATOR +B6 R-CH L-CH SO401 VIDEO/AUX INPUT CD LID MOTOR DRIVER 1 23 5 67 89 IC805 TA7291S 11 10 9 8 7 6 5 4 3 2 1 CE CL DI SD FM ST DO A_12V D_GND TUN L TUN R A_GND 11 1 2 3 4 5 6 7 8910 SD S

27、TEREO DO CE DI CL CD +B P_MUTE P_STB D_GND A_12V +B1 +B3 +B6 +B2 +B4 CNP703CNP307 TO TUNER PWB FROM DISPLAY PWB FROM DISPLAY PWB LED PWB SWITCH PWB CD LID OPEN/CLOSE SW802 CD LID OPEN/CLOSE MOTOR M M801 FOCUS/TRACKING/ SPIN/SLED DRIVER 123456789 9 10111213 16 17 18 1921 22 23 24 25 26 27 28 PO1- PO1

28、+ VO3- VO3+ VIN3 VG3 VCC VCC BIAS VG4 VIN4 VO4+ VO4- OPO VO2- VO2+ VIN2 VG2 GND GND GND MUTE REG O TRB VG1 VIN1 VO1+ VO1- IC804 MM1469XH SPINDLE MOTOR SLED MOTOR PICKUP IN SP+ SP SP+ SL PU-IN GND FO TR + + M M CD MOTOR PWB NM802 NM801 NSW801 CD_7V 5V +B2 +B4 +B7 +B7 +B7 A C B F E +B7 +B7 +B7 LD MON

29、FOCUS COIL 1/2V 5V TRACKING COIL PICKUP UNIT 23 24 22 21 20 19 18 17 16 45 40 38 34 33 32 31 30 28 50 56 57 51 52 48 49 46 47 43 42 44 15 14 1312 11 10 9 8 7 6 5 4 3 2 1 DIGITAL OUT 3 2 1 J801 5355 FMO DMO 100 90 97 96 93 92 91 78 79 BUS0 BUS1 BUS2 BUS3 BUCK /CCE /RST 85 82RO LO 14 23 39 62 76 80 94

30、 6 15 243663 71 72 73 74 77 9581 86 D_GND A_GND D_GND D_GND M_GND M_GND M_GND M_GND 25 MAIN PWB AC 110/127/220/ 230240V, 50/60Hz 51291011 3 7 4 2 IN2 POWER GND1 VCC OUT1 FIL OUT2 GND NF1 110V 127V 220V 230240V F654 2A 250V TF AM GND FM 75ohms SO301 VSM AM RF OUT OUT OUT OUT IN IN CUT AM LOW FM/AM MP

31、X VCO MPX IN MO/ST L-CH R-CH FM AFC AM OSC AM OSC (AM/FM) PHASE PHASE IF OUT VCC FM DET STEREO SD GND AM IF REG AM MIX OUT IN IN FM IF 232221201918171615142413 121110987654321 PLL(TUNER) 111098765431 PD IF IN AM IN FM IN VDD AIN AOUT VSS X OUT 22 21 20191817 16 1514 13 12 FM FM MUTE CE DI CL DO MO/S

32、T IF REQ X IN IC302 LC72131 FM FRONT END 123456798 IC301 BF301 BAND PASS FILTERTA7358AP 123 TP301 456kHz X351 32.768kHz 8MHz Q351 Q360 ZD351 10 11 1 2 3 4 5 8 9 6 7 SD FM ST DO CL CE DI A_12V D_GND TUN_L TUN_R A_GND TO MAIN PWB CNS307 TUNER PWB 38541 110067 57 56 20 59 66 65 64 63 62 61 60 58 53 54

33、51 3946 49 5032 47 8 4 LCD701 LCD DISPLAY 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 LIGHT BUS0 BUS1 BUS2 BUS3 BUCK CCE CD_STB CLID_DW CLID_UP CLID_PRO CLID_SW CD_RES PU-IN DIMMER LIGHT BUS0 BUS1 BUS2 BUS3 BUCK CCE CD_STB CLID_DW CLID_UP CLID_PRO CD_RES PU-IN DIMMER B-LIGHT 1 2 3 4 5 6 7 8 9 10 11 12 13 14

34、 15 TO MAIN PWB TO MAIN PWB TO POWER PWB TO MAIN PWB CNS702CNW702 REMOTE SENSOR RX701 3 2 1 3 4 2 1 2 1 CNW707 CNS707CNS652 RESET VLC1 VLC2 VLC3 7 6 5 MMOD VREF VREF+ VSS 15 24 14 11 SYS_STOP POWER 3837 13 12 10 9 X701 X702 OSC1 OSC2 XO XI CLID_SW SW711713 SW721,722 SW725727 SW709 SW718 SW710KEY1 KE

35、Y218 17 16 SYSTEM MICROCOMPUTER/ FL DRIVER IC701 IX0039SJ D_GND A_24V A_12V P_STB P_MUTE CD+B DI CE CL DO STEREO SD 11 10 9 8 7 6 5 4 3 2 1 11 10 9 8 7 6 5 4 3 2 1 CNW703 CNS703 CD+B STEREO SD DI CL DO CE 28272625 SURR PSTB PMUTE 454443 DISPLAY PWB Q708 Q707 Q709 Q706 ANTENNA TERMINAL AM Band Covera

36、ge fL FM MUTE LEVEL AM IF FM IF AM Tracking fL FM RF VD301 VD303 VD302 FM IF DET/ FM MPX/AM IF IC303 LA1832S +5V +5V VT +5V +5V +B FM +B +5V FM +B +5V T302 T306 T304 T351CF303 L302 FM ANT. FM Band Coverage fL FM +B FM +B L303 FM OSC. CF302 FM IF FM IF CF352 CF351 AM IF SWITCHING SWITCHING RESET SWIT

37、CHING Q306 Q302 Q701 Q702 Q703 VR351 X352 4.5MHz VOLTAGE REGURATOR COM0 COM3 SEG0 SEG33 REMOCON P_CONT USWD_5R6V D_GND PCONT VDD GND LED701 LED702 LED PWB RD-M23 6 BLOCK DIAGRAM RD-M23 7 Cleaner Liquid Cleaning Disc PARTS CODE: UDSKA0004AFZZ HOW TO USE 1. Using the brush in the cleaner cap, apply 1

38、or 2 drops of the cleaning fluid to the brush on the CD cleaner disc which has the 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 co

39、ntinues to turn, press the stop button. CAUTION The CD lens cleaner should be effective for 30 - 50 operations, however if the brushes become worn out earlier then please replace the cleaner disc. If the CD cleaner brushes become very wet then wipe off any excess fluid with a soft cloth. Do not drin

40、k the cleaner fluid or allow it to come in contact with the eyes. In the event of this happening then drink and / or rinse 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, broa

41、dcasting and renting product is prohibited by law. When the CD does not function When the CD section does not operate when the objective lens of the optical pickup is dirty, this section may not operate. Clean the objective lens, and check the playback operation. When this section does not operate e

42、ven after the above step is taken,check the following items. Remove the cabinet and 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 pickup lens. Before attempting any adjustment make certain

43、 that the lens is clean. If not, clean it as mentioned below. Turn off the power, and wipe the lens softly using a cleaning paper moistened with commercially available cleaning solution so as not to damage it. Be careful not to touch the lens with bare hands. Dust gradually accumulates on the object

44、ive lens during use, and it may degrade performance. To avoid this problem, use a cleaning 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 circu

45、it. No Yes No Is Er-CD01 displayed? Yes Move the pickup to most internal circumference side of disc. Turn the power off and reset the CD TEST MODE (STEP 1). Is PU ERROR not displayed? Yes Check the PWB pattern between pin 59 (CD_RES) of IC701 and pin 100 (/RST) of IC802. No Is +5V applied to pin 100

46、 (/RST) of IC802? Yes Is CD Lid switch SW802 ON condition ? No Does the CD TEST MODE advance from STEP 2? Yes Check the between pattern IC701 and SW802 If OK. Check the main unit power supply circuit. No Does the laser come on in CD TEST MODE STEP 2? Check the procedure in LASER FAILURE. Yes Does the CD T