Kenwood-EZ-500-Service-Manual 电路图 维修手册.pdf

《Kenwood-EZ-500-Service-Manual 电路图 维修手册.pdf》由会员分享，可在线阅读，更多相关《Kenwood-EZ-500-Service-Manual 电路图 维修手册.pdf（32页珍藏版）》请在收音机爱好者资料库上搜索。

1、 2004-8 PRINTED IN JAPAN B53-0196-00 (N) 793 CD RECEIVER EZ500 SERVICE MANUAL Size AA battery (Not supplied) Plastic cabinet assy (A02-2735-03) Lever (D10-4589-04) x2 Screw set (N99-1719-05) Mounting hardware assy (J22-0011-03) CD MECHANISM EXTENSION CORD (24P) : W05-0934-00 MODELTDF PANEL No.TDF NA

2、ME EZ500Y33-2110-11TDF-EZ500 TDF PANEL INFORMATION Panel assy (A64-3418-12) DC cord (E30-6294-05) Screw set (N99-1730-15) Remote controller assy (RC-505) (A70-2059-05) Escutcheon (B07-3117-02) RadioFans.CN 收音机爱 好者资料库 2 EZ500 BLOCK DIAGRAM Q201 BUFFER IC1 IC2 REMOCON RESET SW ENCODER ROTARY S1 WITH L

3、CD DRIVER KEY MATRIX IC1 LCD PANEL DET EJECT SW S1 EJECT ILLUMI DSI SYSTEM MICROPROCESSOR IC2 MPX E-VOL & EXT AMP DIMMER ACC DET TEL MUTE B.U DET PRE MUTE PRE MUTE DRIVER MUTE IC6 POWER IC IC4 THERMAL PROTECT PRE OUT (REAR/NF) EXT.AMP.CON DIMMER ACC MUTE BACK UP AUX IN (FRONT) PRE OUT SP OUT SERGE D

4、ET SW REGCD MECHA+B SERVOSERVO+BSW 14V Q21 IC9 SUPPLY IC IC3 POWER ANT CON P CON RESET IC8 SW 5V Q4 PANEL 5V Q152 SW5V S-METER AUDIO OUT IFC OUT PLL-DATA PLL-CLK SW5V AM+B A8V SW3 SW2 SW1 MS CLK MS DATA M MUTE L SW4 M MUTE R LO/EJ M STOP MOSW M RST SERVO+B A8V BU5V CD MECHA+B DATA C CH MUTE CH RST R

5、EQ H REQ C CH CLK CH-CON 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 VOL A VOL B REMO PRE MUTE MUTE P-MUTE EXT.AMP.CON DIMMER PHONE ACC DET B.U DET BEEP PS1-0 PS1-1 PS1-2 PS2-0 PS2-2 RST FREE FRONT BU5V BACK UP A8V AUX SW5V BACK U

6、P AM+B FM+B ILLUMI A8V BU5V BU5V BU5V MODE CD,MP3 FM AM CH OUTPUT 3600mV 1800mV 600mV 3600mV TUNER CD CH SWITCH UNIT (X16- ) DAUGHTER UNIT (X89- ) Q351,352 Q355,356 Q32 Q31 Q3 Q2 Q1 Q22 SWITCH UNIT (X16-2960-10) Ref. No.Application / FunctionOperation / Condition / Compatibility IC1LCD DriverDrives

7、LCD IC2Remote Control ICControls the unit Q2REMO ON SWThe power supply of IC2 is turned on when base level goes “L” Q3Key Illumination SW (Red)Lights Red key-illumination when base level goes “H” Q4Key Illumination SW (Green)Lights Green key-illumination when base level goes “H” Q5Dimmer ControlLigh

8、ts LCD Back Light when base level goes “H” COMPONENTS DESCRIPTION RadioFans.CN 收音机爱 好者资料库 3 EZ500 ELECTRIC UNIT (X34-3080-14) Ref. No.Application / FunctionOperation / Condition / Compatibility IC1System -COMControls FM/AM tuner, the changer, CD mechanism, Panel, volume and tone. IC2E.Vol & N.C.MPXC

9、ontrols the source, volume, tone and FM multiplex detector. Bu5V (5V), Audio8V (8V), 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 bel

10、ow 3.6V or less. IC9SW RegulatorPower Supply for MP3 Q1Serge Detection “L” when the back-up voltage becomes more than 24V (momentary 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 detecte

11、d. Q3ACC Detection“L” when Acc is present. Q4SW 5VON when the base is “L”. Q21Servo Regulator Q22Servo SW Q23Control Power Supply IC Q31Dimmer ControlDimmer ON when the base is “H”. Q32EXT.AMP ControlControls Ext.AMP by pulse width. Q41SW Regulator Control DSI lights when the base is “L”. Q151DSI Dr

12、iverDSI 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 5V cut off. Q153,154ILL ControlILL lights when the base of Q153 is “H”. Q20

13、1Noise buffer Q350 Pre and NF Mute SW Drives the Pre and NF Mute sw (Q351,355) when the base is “L”. (not always Pre and NF) Q351Pre / NF Mute SWMutes the Pre Rear Lch or NF Lch when the base is “H”. Q352Pre / NF Mute SWMutes the Pre Rear Rch or NF Rch when the base is “H”. Q354 Pre and NF Mute SW D

14、rives the Pre and NF Mute sw (Q352,356) when the base is “L”. (not always Pre and NF) Q355Pre Mute SWMutes the Front Lch 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 SW2OUT 2.

15、03.0ILL FM ON 4.0ILL AM ON RadioFans.CN 收音机爱 好者资料库 4 EZ500 SYSTEM MICROCOMPUTER : UPD703030GC052 (X34 : IC1) Pin No.Pin NameI/OApplication Truth Processing Operation Description value table 1PLL CLKI/OCLK output terminal to F/E 2Not usedO 3PANEL-DETIPanel DET terminalNo panel DET : L, Panel DET : H

16、4IC2 SDAI/ODATA input/output terminal with E-VOL 5IC2 SCLI/OCLK output terminal to E-VOL 6VDD- 7VSS- 8FLIP-DETIFlip DET terminalL : Panel DET, H : Panel flippable 9BEEPOBEEP output terminal 10REMOIRemote control input 11,12Not usedODestination other than E and E2 13L CEOCE output terminal for LCD dr

17、iver 14,15Not usedONon variable illumination switch destination 16DSII/O EJECT KEY ILL, GUIDE ILL,FLIP-DET “H” and PANEL-DET is “L” : “H” / “L” DSI control terminalFLIP-DET “H” and PANEL-DET is “H” : “L” 17DIM CONODimmer control terminal50ms interval : “H” / “L” 18TEST- 19ILL CONODuring FLIP DET ILL

18、+B OFFDuring FLIP DET “L” : H 20VOL AIVolume key inputWhen looking at VOL, also look at FLIPDET 21VOL BIVolume key inputWhen looking at VOL, also look at FLIPDET 22MOSWOCD mechanism MOTOR IC SWLoading, Eject, Brake : H 23LO/EJI/OCD mechanism LOADING, EJECT switchingSTOP, Brake : Hi-Z, Loading : L, E

19、ject : H 24M STOPOSTOP request to CD mechanism 25M RSTOReset output terminal to CD mechanismNormal : H, Reset : L 26MUTEI/OMUTE terminalHi-Z : Mute ON, L : Mute OFF 27LOE/LIM SWICD DOWN SW DET terminalH : Chucking 28M-MUTE LIMUTE request terminal from CD mechanismL : Mute request 29M-MUTE RIMUTE req

20、uest terminal from CD mechanismL : Mute request 30PANEL 5VI/OPanel 5V control terminalPanel DET : L, Detached, Momentary power down : H 31RESETINormal : H, Reset : L 32XT1I32kHz 33XT2I32kHz 34REGC-Connect 1F condenser to GND 35X2I20MHz 36X1I20MHz 37VSS- 38VDD- 39CLKOUT- MICROCOMPUTERS TERMINAL DESCR

21、IPTION 5 EZ500 Pin No.Pin NameI/OApplication Truth Processing Operation Description value table 40IC2 TYPE1IE-VOL setting switching terminal 41IC2 TYPE0IE-VOL setting switching terminal 4244TYPE2TYPE0IDestination switching terminale 45CD MECHA+BI/OPower supply control terminal for MP3ON : L, OFF : H

22、i-Z 46SW5VI/OControl terminal for SW5VON : L, OFF : Hi-Z 47,48PS2-0, PS2-1OControl terminal for power supply ICw 4951PS1-0PS1-2OControl terminal for power supply ICq 52B.U-DETIMomentary power down DET terminalBU DET : L, BU no DET (momentary power down) : H 53ACC-DETIACC DET terminalACC DET : L, ACC

23、 no DET : H 54DIMMERISmall DET terminalON : L, OFF : H 55BVDD- 56BVSS- 57EXT AMP CONO 58(SVR)OPOWER IC SVR control terminalMomentary power down : H 59P-MUTEOPOWER IC MUTE output terminalDuring POWER OFF : L, During ALL OFF : L, When TEL MUTE : L 60P-STBYOPOWER IC STBY output terminalWhen POWER IC ON

24、 : H, OFF : L 61Not usedO 62PRE MUTE RORch PRE MUTE output When momentary power down : L, M-MUTE R : L (during CD), 2 zone : H fixed 63PRE MUTE LOLch PRE MUTE output When momentary power down : L, M-MUTE L : L (during CD), 2 zone : H fixed 64AFSOConstant switching terminal at noise DETDuring FM seek

25、 and AF search : L, During reception : H 65O-DATAI/ONot used 66O-CLKI/ONot used 67O-CEI/ONot used 68LX_RSTOReset output to external devices Normally : L, System RST return, then after 400msec or more : H then L 69LX_CONOControl output to external devicesON : H, OFF : L 70AVCONTOAD reference voltage

26、control outputWhile in operation : H 71AVDD- 72AVSS- 73AVREF-AD reference voltage control inputConnect to 70 pin 74PHONEIPHONE DET terminal TEL MUTE : 1V or lower, NAVI MUTE : 2.5V or higher 75TYPE3IDestination switching terminal 7681Not usedI 82S-METERIS-meter DET terminal 83NOISEIFM noise DET term

27、inal 84IFC-OUTIF/E IFC OUT input terminal MICROCOMPUTERS TERMINAL DESCRIPTION 6 EZ500 Pin No.Pin NameI/OApplication Truth Processing Operation Description value table 85LX_MUTEIMUTE request from external devicesH : MUTE ON, L : MUTE OFF 86LX_REQ_MORequest output to external devicesRequest DET : L 87

28、Not usedONon RDS destinationOutput L fixed 88LX_REQ_SIRequest input from external devicesRequest DET : L 89KEY-REQICommunication request from LCD driverL : KEY input 90LO.S SWILoading start SW DET terminalLoading start : L 9112EJE SWI 12cm DISC EJECT position DET SW terminal 12cm DISC : L 12 or 8cm

29、DET 92EJECTIEJECT DET terminalL : KEY input 93Not usedOOutput L fixed 94LX_DATA_SIDATA input terminal from external devices 95LX_DATA_MODATA output terminal for external devicesLast retention 96LX_CLKI/OCLK input/output terminal with external devices 97L DATALIData input from LCD driver 98L DATASODA

30、TA output terminal to LCD driver 99L CLKOCLK output terminal to LCD driver 100PLL DATAI/ODATA input/output terminal with F/E MICROCOMPUTERS TERMINAL DESCRIPTION Truth value table q PS1-0PS1-1PS1-2AUDIOP-CONP-ANT LLLOFFOFFOFF H (L)L (H)LONOFFOFF HHLONONOFF HHHONONON w PS2-0PS2-1ILLUMIFM+BAM+B LLOFFOF

31、FOFF H (L)L (H)ONONOFF HHONOFFON e TYPE MODELDESTINATION 012 KDC-X579KLLL EZ500KLLL KDC-MP425KHLL KDC-MPV525KLHL KDC-MPV5025KLLL KDC-WV6027EHLH KDC-W6027ELLH KDC-W6027YELLH KDC-MPV7026MHHL KDC-MP6026MLHH 7 EZ500 1. How to enter the test mode While holding the Preset 1 and Preset 3 keys, reset the un

32、it. 2. How to exit from the test mode Reset the unit, ACC OFF, Power OFF, and Panel detached. (Note) The test mode cannot terminated by momentary power down. 3. Initial status in the test mode Sources:All OFF Display:All segments are lit Volume:-10 dB (displayed as 30) Loudness:OFF CRSC:OFF regardle

33、ss of the presence of switching function SYSTEM Q:Flat. BEEP:When pressing any keys, the buzzer generates a beep at any time AUX: ON MENU SYSTEM Q : OFF Variable model: Default is white 4. Special display in Tuner mode When any of the following messages is displayed in Tuner mode, the front end may

34、be abnormal. “TNE2P 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 pos- sible. 5. Forced switching of K3I Each press of the Preset 6 key in Tuner mode should swit

35、ch 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 6. CD Receiver Test Mode Specification When resetting to start, forced ejection of CD is prohib-

36、 ited. When a CD is in place, the CD is not recognized when reset. When the Track up key is pressed, the mechanism jumps to the following track. No.9 No.15 No.10 No.11 No.12 No.13 No.22 No.14 No.9 (Return to the first track.) TEST MODE When the Track down key is pressed, the track goes down by one f

37、rom the currently played track. When the number of total tracks of the MP3 disc is less than 9, 1st track is played. When a CD being played, by pressing Preset 1 key inter- mittently, the mechanism can be made to jump to Track No. 28. 7. Audio-related specifications A short press of the Q key initia

38、tes the audio adjustment mode. Pressing the key on the remote controller initiates the audio adjustment mode. Fader is selected to the initial item. Continuous holding of a remote controller key is inhibited, and workings are short press of any keys. Bass, Middle and Treble are adjusted in 3 steps o

39、f -8 / 0 / +8 with the Track Up/Down keys (Default : 0). Balance is adjusted in 3 steps of L15 / 0 / R15 with the Track Up/Down keys (Default : 0). Fader is adjusted in 3 steps of R15 / 0 /L15 with the Track Up/Down keys (Default : 0). HPF is adjusted in 2 steps of OFF / 170Hz with the Track Up/Down

40、 keys (Default : OFF). LPF is adjusted in 2 steps of OFF / 120Hz with the Track Up/Down keys (Default : OFF). Bass f, Bass Q, Bass EXT, Middle f, Middle Q and Treble f are not dealt with by the audio adjust. 8. Menu-related specifications A short press of the PLAY/PAUSE key initiates the Menu mode.

41、Pressing the DNPP key on the remote controller initiates the Menu mode. Continuous holding of a remote controller key is inhibited, and workings are short press of any keys. Contrast is adjusted in 3 steps of 0 / 5 / 10 with the Track Up/Down keys (Default : 5). 9. Backup current measurement When th

42、e 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. (The CD mechanism is not acti- vated at this time.) 8 EZ500 10. Special display when the display is All ON Pressing the Preset keys while the power is All OFF dis- plays the

43、following information. 1 keyVersion display (8 digits, Month/Day/Hour/Minute) (Display) SYS xxxxxxxx 2 keySerial number display (8 digits) (Display) SNo xxxxxxxx 3 keyShort press : View power ON time. (The All OFF period is not counted.) 2 seconds long press : Clear power ON time. (Display) PonTim x

44、xxxxMax. 60000 (hours) 4 keyShort press : Display CD operation time. 2 seconds long press : Clear CD operation time. (Display) CDTim xxxxxMax. 60000 (hours) 5 keyShort press : Display CD ejection count. 2 seconds long press : Clear CD ejection count. (Display) EjeCnt xxxxxMax. 60000 (times) 6 keySho

45、rt press : Display Panel open/close count. 2 seconds long press : Clear Panel open/close count. (Display) PnCnt xxxxxxMax. 600000 (times) FM keyDisplay ROM collection version. (Display) ROM RxxxInvalid : ROM R 11. Other specifications Only during the changer operation, two-zone ON/OFF is achieved by

46、 pressing Preset 1 key. When ON, P/S dot is turned on all the time. No displays such as “CODE OFF/ON” during power ON. The line mute against times are 1 second from 10 sec- onds when starting the test mode. OEM display output is not stop if OEM display not connec- tion on the test mode. 12. Switchin

47、g the frequency span (K/M type) While holding the Preset 1 key and Preset 5 key, reset the unit. 13. OEM compatible setting (Electronic volume destination setting) Models equipped with S03F/E can become OEM model compatible by using the No. 2 pin of the microcomputer. The setting methods are shown b

48、elow. For actual data values, please refer to the Application Document IC2V-05. IC2-TYPE0 IC2-TYPE1 Contents (41 pin)(40 pin) LowLowq Model on the market (default) LowHighwModel on the market CRSC changed HighLoweOEM model compatible CRSC changed HighHigh r OEM model compatible CRSC and de-emphasis

49、changed 14. Security Forced Power ON mode (All models) Even when the security (Simple security and Code secu- rity) is approved, resetting the unit while holding the Q key and Preset 4 key 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 the unit is reset again. (Security code is doing not clear at this mode. Put the power on fill-in.) Method of registration of the security code after EEPROM (F/E) replacement