Kenwood-KDC-3025-Service-Manual(2) 电路图 维修手册.pdf

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1、 2003-11 PRINTED IN JAPAN B53-0106-00 (N) 1029 CD RECEIVER KDC-3025/325/5026/G SERVICE MANUAL Except KDC-5026G SIZE AA BATTERY Panel assy (A64-3190-02):KDC-5026G (A64-3191-02):KDC-5026 Plastic cabinet assy (A02-1486-13) Lever (D10-4589-04) x2 Screw set (N99-1730-15) DC cord (E30-6322-05) Screw set (

2、N99-1719-05) Escutcheon (B07-3083-02):KDC-5026G (B07-3098-02):KDC-325/5026 (B07-3100-02):KDC-3025 Mounting hardware assy (J22-0011-03) KDC-5026/5026G KDC-3025 KDC-325 Panel assy (A64-3183-02):KDC-325 (A64-3185-02):KDC-3025 Remote controller assy (RC-505) (A70-2040-05) CD MECHANISM EXTENSION CORD : W

3、05-0618-00 TDF PANEL INFORMATION MODELTDF PANEL No.TDF NAME KDC-325Y33-1930-60TDF-43D KRC-3025Y33-1930-61TDF-43DB MODELTDF PANEL No.TDF NAME KDC-5026Y33-1930-63TDF-5026 KRC-5026GY33-1930-62TDF-5026G RadioFans.CN 收音机爱 好者资料库 KDC-3025/325/5026/G 2 BLOCK DIAGRAM Q201 BUFFER IC1 IC2 REMOCON RESET SW ENCO

4、DER ROTARY S1 WITH LCD DRIVER KEY MATRIX IC1 LCD PANEL DET S1 EJECT SW S1 EJECT ILLUMI DSI u-COM IC2 MPX E-VOL & ACC DET TEL MUTE B.U DET PRE MUTE DRIVER MUTE IC6 POWER IC IC4 THERMAL PROTECT ACC TEL MUTE BACK UP (REAR) PRE OUT (FRONT) PRE OUT SP OUT SURGE DET SERVOSERVO+BSW 14V Q21 WIRED REMO SUPPL

5、Y IC IC3 POWER ANT CON P CON RESET IC8 SW 5V Q4 PANEL 5V Q152 SW5V ILLUMI CON DRIVER MUTE PRE MUTE KDC-3025 only S-METER AUDIO OUT IFC OUT PLL-DATA PLL-CLK SW5V AM+B A8V LOE/LIM SW 12EJE SW LOS SW MS CLK MS DATA M MUTE LO/EJ M STOP MOSW M RST SERVO+B A8V BU5V LX-DATA C LX-MUTE LX-REQ H LX-REQ C LX-C

6、LK LX-CON LX-DATA H BACK UP NOISE S-METER FM AM MP IN LEVEL CD QUAL AFS CH BU5V PANEL DET EJECT DSI L CLK L DATAS L CE L DATAL VOLUME A VOLUME B REMO ILL CON MUTE P-MUTE PHONE ACC DET B.U DET BEEP PS1-0 PS1-1 PS1-2 PS2-0 PS2-2 RST BU5V BACK UP A8V SW5V BACK UP AM+B ILLUMI A8V BU5V BU5V BU5V MODE CD

7、FM AM CH LEVEL 3600mV 1800mV 600mV 3600mV LX-RST REAR FRONT TUNER CD CH SWITCH UNIT (X16- ) DAUGHTER UNIT (X89- ) RadioFans.CN 收音机爱 好者资料库 KDC-3025/325/5026/G 3 BB BB A x2 A x2 D C E G F H J How to Disassemble (PANEL ASSY) 1) Remove four screws (A). 2) While holding the section (B) indicated with arr

8、ows, pull and remove PANEL ASSY. DISASSEMBLY FOR REPAIR 3) Pull SWITCH UNIT (C) as indicated in the diagram and re- move knob (D). (The knob (D) is attached to the rotary with hook (E) and it is not possible to remove hook (D) only.) How to install knob (SRC) 1) Place knob (F) and knob (G) in the po

9、sitions indicated in the diagram below. 2) While keeping these positions, use a piece of adhesive tape (H) to hold knobs in position, as shown in the diagarma. 3) Set the rotary (J) position as shown in the diagram. 4) While keeping the letters “SRC” horizontally in position, set it to the rotary on

10、 the panel. 5) Remove the adhesive tape (H). RadioFans.CN 收音机爱 好者资料库 KDC-3025/325/5026/G 4 SWITCH UNIT (X16-2500-xx) Ref. No.Application/FunctionOperation/Condition/Compatibility IC1LCD DriverDrives LCD IC2Remote Control ICControls the unit. Q1,Q4REMO ON SWThe power supply of IC2 is turned on when b

11、ase level goes “L”. ELECTRIC UNIT (X34-3090-xx) Ref. No.Application/FunctionOperation/Condition/Compatibility IC1System -COMControls FM/AM tuner, the changer, CD mechanism, Panel, volume, and tone. IC2E.Vol & N.C.MPXControls the source, volume, tone and FM multiplex detector. Bu5V (5V) Audio8V (8V)

12、FM+B (8V) AM+B (8V) P-CON ANT-CON IC3Power Supply IC IC4Power ICAmplifies the front L/R and the rear L/R to 50W maximum. IC6Muting logic ICControls logic for muting. IC8Reset IC“L” when detection voltage goes below 3.5V or less. Q1Surge Detection “L” when the back-up voltage becomes more than 24V (m

13、omentary power down). “H” when the back-up voltage becomes less than 24V. Q2BACK-UP Detection“L” when B.u is present. “H” when B.u is absent or momentary power down is detected. Q3ACC Detection“L” when Acc is present. Q4SW 5VON when the base is “L”. Q21Servo Regurator Q22Servo SW Q23Conrtol Power Su

14、pply IC DSI lights when the base is “L”. Q151DSI DriverDSI turns off when the base is “H”. DSI turns on and off when panel is taken off. Q152Panel 5V SW When the panel is attached, the base goes “L”, turning the Tr ON to supply 5V to the panel. When panel is taken off, panel 5Vcut off. Q153,Q154ILLU

15、MI ControlILLUMI lights when the base of Q153 is “H”. Q201Noise buffer Q351Pre Mute SWMutes the Rear Lch when the base is “H”. Q352Pre Mute SWMutes the Rear Rch when the base is “H”. Q354Pre Mute SWDrives the Pre Mute sw (Q351, 352, 355, 356) when the base is “L”. Q355Pre Mute SWMutes the Front Lch

16、when the base is “H”. Q356Pre Mute SWMutes the Front Rch when the base is “H”. COMPONENTS DESCRIPTION SW1OUT 1.53.0Audio ON 3.55.0Audio P-CON ON 7.0Audio P-CON P-ANT ON SW2 2.03.0ILLUMI FM ON 4.0ILLUMI AM ON KDC-3025/325/5026/G 5 MICROCOMPUTERS TERMINAL DESCRIPTION Pin No.Pin NameI/OApplication Trut

17、h Value Processing Operation Description Table 15N.COOPEN (Output L fixed) 6REMOIRemote control input 7N.COOPEN (Output L fixed) 8BYTEIExternal data bus width switching inputConnect to GND 9CNVSSIPull down at 1k 10XCINISub clock input 11XCOUTOSub clock output 12RESETIReset inputNormal : H, When RESE

18、T : L 13XOUTOMain clock output 14VSS-GND 15XINIMain clock input 16VCC-Power supply input (5V) 17NMIPull up (B.U5V) 18EJECTIEJECT detection inputL : EJECT 19N.COOPEN (Output L fixed) (Other than RDS model) 20LX-REQ SIReception request from external slaveL : Request 21ILL CONOIllumination output contr

19、olFLIP DET “L” during “H” 22PANEL 5VI/OPanel 5V control L : ON (Panel detect & ACC ON) Hi-Z : OFF (Panel no detect or ACC OFF) 23VOL AIVOL key input 24VOL BIVOL key input 25LOE/LIM SW (SW3)ICD DOWN SW detectionH : Chucking 26BEEPOBEEP output 27M STOPOSTOP request to CD mechanismWhen CD : H, When STO

20、P : L 28MOSWOCD mechanism MOTOR SWLOADING, EJECT, Brake : H 29PLL-CLKI/OClock output to F/E 30PLL-DATAI/OData input/output with F/E 31LX-DATA MOData output to external slaveLast retention 32LX-DATA SIData input from external slave 33LX-CLKI/OClock input and output of external slave 34LX-REQ MOTransm

21、ission request to external slaveAt request : L 35L DATASOData output to LCD driver 36L DATALIData input from LCD driver 37L CLKI/OClock output to LCD driver 38FLIP-DETIPanel collapse detectionL : Panel received, H : Panel collapse 39L CEOCE output to LCD driver 40LO/EJI/OCD mechanism LOADING, EJECT

22、switching STOP, Brake : Hi-z LOADING : L, EJECT : H 41EPMIFor flush writingPull down at 100k SYSTEM MICROCOMPUTER : M30302MC-1N4FP (X34 : IC1) KDC-3025/325/5026/G 6 MICROCOMPUTERS TERMINAL DESCRIPTION Pin No.Pin NameI/OApplication Truth Value Processing Operation Description Table 42M RSTORESET outp

23、ut to CD mechanismNormal : H, When RESET : L 43M-MUTE RIMUTE request (Rch) from CD mechanismL : MUTE ON 4412EJE SW (SW2)I12cm DISC detection inputL : 12cm disk 45M-MUTE LIMUTE request (Lch) from CD mechanismL : MUTE ON 46LX-CONOExternal slave selectionON : H, OFF : L 47LO.S SW (SW1)ILOADING SW detec

24、tion inputL : LOADING START 48DSIOEJECT key, DSI, guide ILLUMI outputILLUMI ON : L, ILLUMI OFF : H 49PANEL-DETIDetection for panel or no panelH : Panel detect, L : Panel no detect 50N.COOPEN (Output L fixed) 51IFC OUTIF/E IFC OUT inputH : Station detect 52,53N.COOPEN (Output L fixed) (Other than RDS

25、 model) 54N.COPEN (Output L fixed) 55AFSOConstant switch terminal at noise detection During FM seek, AF search : L When receiving : H 56SDAI/OData input/output to IC2, CD mechanism 57SCLI/OCLK output to IC2, CD mechanism 58MUTEOIC2 MUTE controlMUTE ON : H, MUTE OFF : L 59N.COPEN (Output L fixed) 60I

26、C2 TYPE 0I Third party/genuine switching 0 L : Third party, H : Genuine (ROLL-OFF) 61IC2 TYPE 1I Third party/ genuine swithcing1 L : Third party, H : Genuine (NOISE-CANCEL) 62VCCPower supply input (5V) 63N.COOPEN (Output L fixed) 64VSSGND 6567TYPE 0TYPE 2IDestination switching porte 68N.COOPEN (Outp

27、ut L fixed) 69SVROPower IC SVR controlMomentary power dropped : H 70P-STBYOPower IC STBY control POWER IC ON : H, OFF : L ALL OFF during : L 71P-MUTEOPower IC MUTE control When POWER OFF : L, When ALL OFF : L When TEL MUTE : L 72SW5VI/OSW5V controlON : L, OFF : Hi-z 73B.U-DETIMomentary power dropped

28、 detection inputL : B.U detect, H : B.U no detect 74ACC-DETIAcc detection inputL : Acc detect, H : Acc no detect 75N.COOPEN (Output L fixed) 7678PS1-0PS1-2OPower supply IC control terminalq 79,80PS2-0PS2-1OPower supply IC control terminalw 81LX-MUTEIMUTE request from external slaveH : MUTE ON, L : M

29、UTE OFF KDC-3025/325/5026/G 7 MICROCOMPUTERS TERMINAL DESCRIPTION Truth Value Table q PS1-0PS1-1PS1-2AUDIOP-CONP-ANT LLLOFFOFFOFF H (L)L (H)LONOFFOFF HHLONONOFF HHHONONON Truth Value Table w PS2-0PS2-1ILLUMIFM+BAM+B LLOFFOFFOFF H(L)L(H)ONONOFF HHONOFFON Truth Value Table e MODELDESTINATION TYPE 012

30、KDC-5027ELLH KDC-5027YE2LLH KDC-508ELLH KDC-3025KHLH KDC-325KHLH KDC-5026M (K)HHH KDC-5026GM (K)HHH Pin No.Pin NameI/OApplication Truth Value Processing Operation Description Table 8288N.COOPEN (Output L fixed) 89KEY-REQICommunication request from LCD driverL : Key input detect 9092N.COOPEN (Output

31、L fixed) 93S-METERIS-meter voltage input 94NOISEIFM noise detection 95N.COOPEN (Output L fixed) 96AVSS-GND 97N.COOPEN (Output L fixed) 98VREFIReference voltage inputConnect to 100 pin 99AVCC-5V 100REFCONOVREF controlWhile power ON : H KDC-3025/325/5026/G 8 1. How to enter the test mode While holding

32、 the Preset 1 and Preset 3 keys, reset the unit. 2. How to exit from the test mode Reset the unit, momentary power down, ACC OFF, power OFF, and Panel detached. (Note) The test mode cannot terminated by Panel is fall down. 3. Initial status in the test mode Sources:All OFF. Display:All segments are

33、lit. Volume:-10 dB (displayed as 30) Loudness:OFF CRSC:OFF regardless of the presence of switching function. SYSTEM Q:Flat. BEEP:When pressing any keys, the buzzer generates a beep at any time. DISPLAY TYPE:TYPE A 4. RDS automatic measurement An addition to disposal of substitute for visual check PS

34、 display as usual production lines. P-CON terminal is OFF by force, when received the PS data and in case of corrobaration PS display is “RDS_TEST”. (“_” is mean blank.) This disposal is test mode only. P-CON is switching the source or return with power onoff. 5. Special display in Tuner mode When a

35、ny of the following messages is displayed in Tuner mode, the front end may be abnormal. “TNE 2P NG”: The EEPROM is set to the default (unstable values) because the F/E was shipped without passing through the adjustment process, etc. “TNCON NG”: Communication with the F/E is not possible. 6. Forced s

36、witching of K3I Each press of the Preset 6 key in Tuner mode should switch K3I from AUTO Forced Wide Forced Middle Forced Narrow AUTO. The initial status is AUTO and the dis- play shows these modes as follows. AUTO:FMA Forced Wide:FMW Forced Middle : FMM Forced Narrow :FMN TEST MODE 7.CD Receiver Te

37、st Mode Specification When resetting to start, forced ejection of CD is prohib- ited. When a CD is in place, the CD is not recognized when reset. When this key is pressed, the mechanism jumps to the following track. No9 No15 No10 No11 No12 No13 No22 No14 No9 (Return to the first track.) When this ke

38、y is pressed, the track goes down by one from the currently played track. When a CD being played, by pressing 1 key intermittently, the mechanism can be made to jump to Track No. 28. 8. Audio-related specifications A short press of the Q key initiates the audio adjustment mode. Pressing the key on t

39、he remote initiates the audio adjustment mode. Fader is selected to the initial item. Continuous holding of a remote control key is inhibited. Bass, Middle and Treble are adjusted in 3 steps of -8/0/+8 with the Track Up/Down keys. Balance is adjusted in 3 steps of L15/0/R15 with the Track Up/Down ke

40、ys. Fader is adjusted in 3 steps of F15/0/R15 with the Track Up/Down keys. Volume Offset is adjusted in 2 steps of -8/0 with theTrack Up/Down keys. 9. Menu-related specifications A short press of the MENU key initiates the Menu mode. Except, tape source is usually press and hold 1 second to enter th

41、e menu mode and short press initiates turn over. Pressing the DNPP/SBF key on the remote initiates the Menu mode. Continuous holding of a remote control key is inhibited. Contrast is adjusted in 3 steps of 0/5/10 (5x7dot), 0/4/7 (14seg) with the Track Up/Down keys. 10. Backup current measurement Whe

42、n the unit is reset while ACC is OFF (i.e. by turning Back-Up ON), the MUTE terminal goes OFF in 2 seconds in place of 15 second. KDC-3025/325/5026/G 9 11. Special display when the display is All ON Pressing the Preset keys while the power is All OFF dis- plays the following information. 14seg 8 dig

43、its 1keyVersion display (8 digits, Month/Day/Hour/Minute) (Display) xxxxxxxx 2key 3keyShort press: View power ON time. (The All OFF period is not counted.) Long press/hold: Clear power ON time. (Display) PONxxxxxMax. 65535 (hours) 4keyShort press: Display TAPE operation time. Long press/hold: Clear

44、TAPE operation time. (Display) TPTxxxxxMax. 65535 (hours) 5keyShort press: Display TAPE ejection count. Long press/hold: Clear TAPE ejection count. (Display) EJCxxxxxMax. 65535 (times) 6keyShort press: Display Panel open/close count. Long press/hold: Clear Panel open/close count. (Display) PCxxxxxMa

45、x. 655359 (times) FM key Display ROM colection version (Display) ROM RxxxInvalid :ROM R 15x7dot 12 digits 1keyVersion display (8 digits, Month/Day/Hour/Minute) (Display) SYS_xxxxxxxx 2key 3keyShort press: View power ON time. (The All OFF period is not counted.) Long press/hold: Clear power ON time.

46、(Display) PonTim_xxxxx Max. 65535 (hours) 4keyShort press: Display TAPE operation time. Long press/hold: Clear TAPE operation time. (Display) TPTim_xxxxxMax. 65535 (hours) 5keyShort press: Display TAPE ejection count. Long press/hold: Clear TAPE ejection count. (Display) EjeCnt_xxxxxMax. 65535(times

47、) 6keyShort press: Display Panel open/close count. Long press/hold: Clear Panel open/close count. (Display) PnCnt_xxxxxxMax. 655359 (times) FM key Display ROM colection version (Display) ROM RxxxInvalid: ROM R 12. Other specifications The line mute against times are 1 second from 10 sec- onds when s

48、tarting the test mode. Security Forced Power ON mode (All models) Even when the security is approved, resetting the unit while holding the Q and 4 keys makes it possible to turn the power ON for 30 minutes.After 30 minutes have elapsed, it is not possible to return to the previous condition unless t

49、he unit is reset again. Method of registration of the security code after EEPROM (F/E) replacement (Code security model) 1. Enter the test mode. (See How to enter the test mode) 2. Press the MENU key to enter the MENU. 3. When the message “Security” is displayed, press and hold the Track Up/Down key for 1second to enter the Security registration mode. 4. Enter the code using the FM/AM/Track Down keys. FM key : Number up AM key : Number down Track Up key : Cursor right shift Track Down key : Cursor left shift 5. Hold down th