Kenwood-KDC-7090-Y-Service-Manual(1) 电路图 维修手册.pdf

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1、 2001-1 PRINTED IN JAPAN B51-7714-00(S) 1954 SERVICE MANUAL CD RECEIVER KDC-7090R/Y KDC-7090R AUD PWR OFF MENU CLK ANG VOL ADJ TI NAME.S DISP EX DAB COMPACT TEXT DIGITAL AUDIO 47Wx4 LOUD K3i SCANRDMREPM. RDM PTY G KDC-7090R Antenna adaptor (T90-0523-05) (T90-0534-05) Plastic cabinet assy (A02-1497-0

2、3) DC cord (E30-4942-05) Lever (D10-4562-04) Remote controller assy (A70-0886-15) Mounting hardware assy (J21-9716-03) Knob(EJECT) (K25-1226-03) Front glass (B10-3264-01) Panel assy (A64-2161-02) Knob(VOL) (K25-1222-03) Knob(1-6) (K25-1223-03) Knob(FM/AM) (K25-1225-03) Torsion coil spring (G01-2924-

3、04) Screw set (N99-1704-05) RadioFans.CN 收音机爱 好者资料库 KDC-7090R/Y 2 BLOCK DIAGRAM PLL+B FM+B AM+B DIMMER MUTE 2WAY DET. ACC SRM BU DET. SRM DRIVER A8V SERVO SW5VBU5V P CON ANT-CON MUTE DRIVER MUTE POWER IC IC4 u-COM IC1 CD CH IC8 Q37-40 IC2 F/E MECHA E-VOL PRE OUT SP-OUT DIMMER TEL-MUTE ACC ANT-CONT P

4、-CON BACK UP 3600mV 3600mV 1372mV(E) 1800mV(K,M) 855mV(E) 600mV(K,M) DECORDER RDS IC14 Q52 Q14 Q15 Q31 Q26-29Q1,2Q3 Q9 Q30 IC15 IC2 IC1 EX.AMP CONTROL AVR RESET IC IC16 BUFFER Q36 NOISE CONTROL EX.AMP PANEL 5V Q7,8 Q10-13 Q4-6 ILLUM +B BUFFER SW14V E-VOL PREOUT PRE OUT LEVEL ATT CD MECHA CD,MD-CH FM

5、 AM CH S-METER QUAL SERVO+B MO SW STOP MUTE SW2 LO/EJ RST SW3 SW1 SDA SCL A8V BU5V SW5V RST REQ C CLK CH-CON DATA H REQ H CD AM FM MUTE PRE MUTE RESET DIMMER KEY REQ L DATAS L CE L DATAL L CLK/PANEL REMO SRM SW2 SRM SW3 SRM DET SRM SW1 RDCK RDDA QUAL SDA SCL AFSAFS S-METER A8V PLL CLK PLL DATA S-MET

6、ER SW5V DATA C BACK UP 3795mV 3795mV 2005mV 1512mV 656mV 926mV 1200mV 1200mV 896mV 850mV 207mV 207mV 470mV(K,M) 251mV(E) 230mV(K,M) 230mV(E) IFC OUT AUDIO OUT SW5V NOISE IFC OUT SRM SUB- SRM SUB+ DRIVER MUTE BU5V LEVEL DIAGRAM LCD (BACK LIGHT W-LED) LCD DRIVER G/R SW KEY MATRIX LCD TYPE (X13-999) (X

7、13-996) REMO SW RESET PANEL 5V DIMMER PWM CONTROL RadioFans.CN 收音机爱 好者资料库 KDC-7090R/Y 3 MICROCOMPUTERS TERMINAL DESCRIPTION GTerminal description PinFunctionI/ODescriptionProcessing Operation 1AM+BOAM power terminalH: During AM radio operation 2FM+BOFM power terminalH: During FM radio operation H: D

8、uring FM radio operation if with RDS, RBDS 3 AFS OSwitching terminal for noise detectionL: During AF search, FM seek H: During receive 4PLL-DATAI/OData I/O terminal to F/E 5PLL-CLKI/OCLK terminal to F/E 6Evdd-Positive power terminal 7Evss-GND terminal 8N.COOpen (not used) 9BEEPOBEEP output terminal

9、10N.COOpen (not used) 11PRE-MUTE LOL (during CD): when M MUTE L is L (low) L during momentary power down Fixed at H only during 2 zone 12PRE-MUTE ROL (during CD): when M MUTE R is L (low) L during momentary power down Fixed at H only during 2 zone 13IC2-SDAI/OIC2, IC5, CD mechanism, DATA line 14IC2-

10、SCLOIC2, IC5, CD mechanism, CLK line 15N.COOpen (not used) 16N.COOpen (not used) 17N.COOpen (not used) 18TEST-Test terminal 19P-MUTEOPower IC MUTE terminalL: During Power-OFF L: During All-OFF L: During Tell-mute 20P-STBYOPower IC STBY terminalPower IC ON: H. Power IC OFF: L. During All-OFF: H 21MUT

11、EOMUTE termianlON: Open OFF: L 22N.COOpen (not used) 23N.COOpen (not used) 24ACC-DETIACC detection terminalL: ACCH: No ACC 25DIMMERISmall detection terminalON: LOFF: H 26SW5VO5 volt power terminalON: LOFF: H 27EXT-AMP-COOExternal AMP control terminal (200ms)L 40ms: Bus boost OFF L 70ms: Bus boost LO

12、W L 100ms: Bus boost HI 28P-CONOPower control terminalPower ON: HPower OFF: L 29ANT-CONOAntenna control terminalTUNER, TI ON: H Open if no ANT-CON 30P-ONOSW14V control terminalPower ON: HPower OFF: L 31 RESET IReset IN terminalH: NormallyH: During reset 32XT1ISubclock terminalTime countOperation dur

13、ing Power-OFF 33XT2-Subclock terminal 34REGC-Capacitor output terminal for regulator inside microprocessor 35X2-Main clock terminalOscillates: During Power-ON Oscillates stop: During Power-OFF, during momentary power down 36X1IMain clock terminal 37Vss-GND terminal 38Vdd-+B terminal 39CLKOUTOInterna

14、l system clock output 40N.COOpen (not used) 41N.COOpen (not used) 42TYPE0IDestination selector port 43TYPE1IDestination selector port 44TYPE2IDestination selector port 45N.COOpen (not used) 46IC2TYPE0IIC2 destination terminalL: During default System -com: UPD703033GC053 RadioFans.CN 收音机爱 好者资料库 KDC-7

15、090R/Y 4 MICROCOMPUTERS TERMINAL DESCRIPTION PinFunctionI/ODescriptionProcessing Operation 47IC2TYPE1IIC2 destination terminalL: During default 48CH-REQHORequest output to changer 49CH-RSTOReset output to changerNormally L, after system RST reset is ”H” for 400ms and then ”L” 50CH-MUTEIMute request

16、from changerON: HOFF: L 51CH-CONOChanger control outputON: HOFF: L 52ILL-ONOFL, illumination outputON: HOFF: L 53M-MUTE LIMute request from CD mechanismON: L 54M-MUTE RIMute request from CD mechanismON: L 55BVdd-+B terminal 56BVss-GND terminal 57M-RSTOReset output to CD mechanismNormally H,L:During

17、reset Per mechanical control specs. 58M-STOPOStop request to CD mechanismStop: LH: During CD 59N.COOpen (not used) 60LO/EJI/OCD mechanism, LODING, EJECT selectorStop, Brake: Hi-z, LOADING: L, EJECT: H 61MOSWOCD mechanism, MOTOR, SWLOADING, EJECT, Brake: H 62N.COOpen (not used) 63CD-SW3ICD down SW de

18、tection terminalChucking: H 64PAN-RESETOReset output to panel microprocessorNormally H, L: During reset, momentary power down 65MC-REQ/PANI/OREQ terminal/panel detection for panel microprocessorL: During panel use 66N.COOpen (not used) 67N.COOpen (not used) 68N.COOpen (not used) 69N.COOpen (not used

19、) 70AVCONTOAD reference voltage control outputSame timing as P ONH: During operation 71Avdd-+B terminal 72Avss-GND terminal 73AvrefIReference voltage supply terminal for A/D converter 74PHONEIPHONE detection terminalTel mute: Min 1 volt, Navi mute: Max.2.5 volt 75SRM-SW3IMask mechanism position dete

20、ction inputSee 01mask mechanical position detection chart 76SRM-SW1IMask mechanism position detection inputSee 01mask mechanical position detection chart 77SRM-SW2IMask mechanism position detection inputSee 01mask mechanical position detection chart 78SRM-DETIMask mechanism detection inputL: Mechani

21、smH: No mechanism 79NOISEIFM noise detection terminal 80S-METERIS meter detection terminal 81R-DATAIRDS DECODER DATA input terminalConnect to GND: On models without RDS, RBDS 82R-QUALIRDS DECODER QUAL input terminalConnect to GND: On models without RDS, RBDS 83IFC-OUTIF/E IFC OUT input terminalL: Wh

22、en station present 84N.CIOpen (not used)Connect to GND 85N.CIOpen (not used)Connect to GND 86SRM-BOSRM mechanical submotor output terminal 87R-CLKIRDS DECODER CLK input terminalConnect to GHD: On models without RDS, RBDS 88CH-REQCIInput request from changerON: L 89SC-REQICommunication request from p

23、anel microprocessor 90CD-SW1ILOADING SW detection terminalLOADING start: L 91CD-SW2I12cm disk detection switch terminal12cm DISC: L 92SRM+BOSRM mechanical submotor output terminal 93BU-DETIMomentary power down detection terminalL: B.UH: No B.U (momentary power down) 94CH-DATACIData input terminal fr

24、om changer 95CH-DATAHOData input terminal to changer 96CH-CLKI/OCLK I/O terminal used with changer 97SC-DATAIData line from panel microprocessor 98MC-DATAI/OData line to panel microprocessor 99MC-CLKOCLK terminal to panel microprocessor 100PAN5VOPanel 5 volt control terminalL: PanelH: No panel KDC-7

25、090R/Y 5 ADJUSTMENT Test Mode 1. How to enter test mode While holding the FM key and the Preset 6 key, reset the unit. 2. How to exit from test mode. While holding down the Preset 6 key, reset the unit. Note: Does not exit from test mode ACC-OFF, Power-OFF or Momentary power down 3. Test mode reset

26、status Sources are all OFF All display segment lit up Volume at -10dB (shows 30 on display) LOUD is OFF. CRSC is OFF regardless of whether switching function is provided. SYSTEM Q is in FLAT Blank skip is OFF. (C/R model) LEDs are white, no scanning. (VLCD model) 4. Special displays in Tuner When th

27、e following displays appear in tuner mode it shows a problem with the front end. “TNE2P NG” . F/E is not aligned and EEPROM is in reset (no settings) such as when shipped. “TNCON NG” . Cannot communicate with F/E (front end). 5. K3I switching Each time the Preset 6 key is pressed in Tuner mode, swit

28、ches one at a time through the following sequence: AUTO Forced Wide Forced Middle Forced Narrow AUTO. When reset, displays the following in AUTO. AUTO . FMA Forced Wide . FMW Forced Middle . FMM Forced Narrow . FMN 6. CD receiver test mode specifications No automatic ejection during reset-start. Doe

29、s not make a CD check in reset with a CD loaded. Using the Track up key jumps to the following tracks. No.9No.15No.10No.11No.12No.13No.14and back to No. 9 Using the Track down key moves 1 track downwards from the track being played. 7. Audio items Momentarily pressing the Q key calls up audio adjust

30、ment mode. Pressing the key on the remote control calls up audio alignment mode. Continuous forward is disabled on the remote control. Bass/Middle/Treble are settable in 3 steps of MIN/ CENTER/MAX with the Track up/down keys. Balance is settable in 3 steps of Left MAX/CENTER/Right MAX with the Track

31、 up/down keys. Fader is settable in 3 steps of Rear MAX/CENTER/Front MAX with the Track up/down keys. HPF is settable in 2 steps of THRU/220Hz with the Track up/down keys. LPF is settable in 2 steps of THRU/120Hz with the Track up/down keys. Bass f/Bass Q/Bass EXT/Middle f/Middle Q/Treble f do not a

32、ppear in the audio alignment. 8. Menu items Momentarily pressing the CLK key calls up the Menu mode. The DNPP/SBF keys on the remote control calls up Menu mode. Continuous forward is disabled on the remote control. Calendar adjust, calendar display switching and calendar memo are eliminated from for

33、ward (FL model) In color alignment mode, Preset 1 is red, 2 is blue, 3 is green and 4 is white. (VLCD model). Contrast is set in 3 steps of 0, 5, 10 and the reset value is 5. (VLCD/LCD models) Brightness adjustment is set in 3 steps of 0, 5, 10 and the reset value is 10. (Normal FL model) 9. Backup

34、current measurement The MUTE terminal turns off 2 seconds (not 15 seconds) after being reset in ACC off (backup on). (The panel, CD and tape mechanisms are disabled during this time.) 10. Special displays during All-Off with all lamps on The following displays appear when the preset keys are pressed

35、 with all display segment lit up. PRESET1Version display (8 digits; Mo. Dy. Hr. Mn.) (Display) SYS XXXXXXXX system microprocessor PAN XXXXXXXX panel microprocessor PRESET2Serial No. display (8 digits) Note: CD/RK type eXcelon model (Display) SNo XXXXXXXX PRESET3Press once: Power-on time display (Doe

36、s not count during All-Off) Press long: Clears the time display during power-on. (Display) PonTim XXXXX (C/R) MAX 65535(time) PRESET4Press once: TAPE/CD/MD operating time display. Press long: Clears TAPE/CD/MD operating time. (Display) CDTime XXXXX (CD/R) TapTim XXXXX (C/R) MAX 65535(time) PRESET5Pr

37、ess once: TAPE/CD/MD eject count display. Press long: Clears TAPE/CD/MD eject count display. (Display) EjeTim XXXXXMAX 65535(count) PRESET6Press once: PANEL open/shut count display. Press long: Clears PANEL open/shut count display. (Display)PnCnt XXXXXMAX 655350(count) KDC-7090R/Y 6 ADJUSTMENT 11. O

38、thers Automatic panel close is disabled when tape or CD is inserted. (M&T model) Panel operation is disabled at Power-ON or Power-OFF. (M&T model) Panel open and closes with the ATT key. (M&T model) No displays such as “CODE OFF” during Power-ON. Pressing the TI (AUTO) key during changer operation t

39、urns on 2zone. Cancel by pressing the TI (AUTO) key again. The P/S dot is lit during 2zone. Pressing the CLK key for 1 second or more during All OFF, calls up the Mask Key (security) write mode. Security items Forced power-ON mode (all models) Even when writing is permitted by the security function

40、(mask key), Power-on can be set for a 30 minute period each time the reset key is pressed while holding down the ATT key and Preset 4 keys. After 30 minutes elapses, can only be restored by using reset. How to register the security code for EEPROM (F/E) replacement (coded security models) 1. While h

41、olding the FM key and the preset 6 key, reset the unit. 2. Call up security register mode by pressing the CLK key. 3. Enter the code with the Preset 1/2/3/4 keys. For example, to enter the number, “3510”. - Press the Preset 1 key 4 times. - Press the Preset 2 key 6 times. - Press the Preset 3 key 2

42、times. - Press the Preset 4 key 1 time. 4. Hold down the DISP key for at least 3 seconds and the message, “RE-ENTER” appears, so once again enter the code according to Step 3 above. 5. Hold down the DISP key for at least 3 seconds, and the message, “APPROVED” appears. 6. Cancel test mode. (See, 2. H

43、ow to cancel the test mode.) Note: All clear cannot be performed on the security code for this model. Simple way to clear the security code (K type only) 1. During code request mode, press the VOL UP key for at least 3 seconds while holding down the DISP key. (- will disappear) 2. Enter, “KCAR” with

44、 the remote controller as described below. (Same as on 00 model.) Press the remote controller 5 key twice, and press the Track Up key. (Enters a “K”) Press the remote controller 2 key three times, and press the Track Up key. (Enters a “C”) Press the remote controller 2 key once, and press the Track

45、Up key. (Enters an “A”) Press the remote controller 7 key twice, and press the Track Up key. (Enters an “R”) 3. Security function is canceled and unit sets to All-Off mode. 4. Code request mode appears if a mistake was made in entering the numbers. Mask key write method on initialized EEPROM 1. Whil

46、e holding the FM key and the preset 6 key, reset the unit. 2. Press the CLK key to call up mouse key register mode. The message, “TRANSMIT 1” appears. The display at this time shows “ rather than “ ”. 3. Face the mask key towards the photosensor and hold down for half a second or longer. 4. When “TR

47、ANSMIT 2” appears, again hold down the mask key for at least half a second. The first and second counter codes are not compared at this time. 5. When the message, “APPROVED” appears, the writing is complete. The demo mode is set at this time and test mode is canceled. Note: Just as with the previous

48、 model, if 30 minutes elapses and the code is not written, then an error is issued and power-OFF is triggered. How to initialize the mask key (Return to factory settings from mask key write permit status.) 1. While holding the FM key and the preset 6 key, reset the unit. 2. The message, “TRANSMIT 1”

49、 appears and mask key request mode is called up. The display at this time shows “ ” rather than “ ”. 3. Cancel the mask key on the remote control by holding down for at least 3 seconds. 4. When “TRANSMIT 2” appears, again hold down the mask key for at least 3 seconds. 5. When the message, “APPROVED” appears, the mask key is canceled, demo mode is set, test mode is canceled, and the factory settings restored. How to All-Clear the mask key 1. While holding the FM key and the preset 6 key, reset the unit. 2. Press the CLK key to call up