Kenwood-KDC-2031-SAY-Service-Manual 电路图 维修手册.pdf

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1、 2004-12 PRINTED IN JAPAN B53-0234-00 (N) 1813 CD RECEIVER KDC-2031SA/SAY KDC-2031SG/SGY SERVICE MANUAL ANTENNA ADAPTOR (T90-0523-05) SPARE TDF PANEL MAIN UNIT NAMETDF PARTS No.TDF NAME KDC-2031SA/SAYY33-2140-66TDF-2031SA KDC-2031SG/SGYY33-2140-67TDF-2031SG MOUNTING HARDWARE ASSY (J21-9716-03) PLAST

2、IC CABINET ASSY (A02-2736-03) DC CORD (E30-6413-05) LEVER (D10-4589-04) x2 ESCUTCHEON (B07-3122-01) VOL AUD FF SET UP MONOSCANRDMREP /AUTO AME PANEL ASSY KDC-2031SA/SAY/SG/SGY (A64-3461-02) This product uses Lead Free solder. RadioFans.CN 收音机爱 好者资料库 2 KDC-2031SA/2031SAY KDC-2031SG/2031SGY BLOCK DIAG

3、RAM MECHA CD or MD CHANGER J2 E-VOL IC10 & AM AGC Q501 FM AGC L506 J4 TUNER IC11 E2PROM SYSTEM u-COM IC1 IC7 RDS DECODER RST IC IC8 PRE MUTE Q351,352 IC4 POWER IC MUTE LOGIC IC6 SURGE DET BU DET ACC DET Q51 Q52 Q53 J1 PAN5V Q151 Q72,73 SERVO VFD REG IC15 POWER SUPPLY IC IC3 ED1 VFD with VFD DRIVER I

4、C1 REMOTE IC3 VOL S11 KEY MATRIX DSI Q155 . . J6 SERVO A8V BU5V AUDIO OUT AM+B ANT MPX OUT MPX IN 800mV 1200mV AUDIO OUT BU5V A8V BACK-UP SP OUT BACK-UP ACC TEL MUTE P-ANT P-CON PAN5 SERVO P-ANT SW5V AM+B A8V BU5V P-CON SW5V AM+B AUDIO+B VCC ILLUMI BU5V ILLUMI PAN5VBU5V PRE OUT KEY :CHANGER CD/MD RE

5、CEIVER FM (E Type) FM (J/K Type) AM (J/K Type) AM (E Type) : : : : : 1800mV 1372mV 600mV 855mV 3600mV 3600mV ELECTRIC UNIT (X34-) SWITCH UNIT (X16-) 7 VREF L-ch R-ch A. GND A8V D. GND BU5V LOE/LIM SW 12EJE SW LOS SW S7.5V LO/EJ MOTOR S. GND VREF VREF 2 2 4 DRV MUTEMUTE DOUT DATA 4 2 CLK MSTOP MRST M

6、UTE L MUTE R 2 2H L 12 5 2 4 3 20 21 13 15 1 14 9 7 6 8 18 12 11 10 22 19 EF A C B TR COIL FO COIL APC SERVO u-COM IC2 Q1 16.934MHz CLOCK X1 DRIVER MOTOR IC3 PROCESSOR LPF IC4 8V SW Q4 Q3 SW S3 S1 S2 D. GND RF AMP IC1 REF 5V REG D2 S. GND A. GND D. GND SLED LOADING 5V SW Q2 D. GND D. GND LOADING & S

7、LED MOTOR SPINDLE MOTOR AMP Q5,6,D3 CURR. DM1 DM2 SW +5V A+5V PICK-UP (DPU1) CD PLAYER UNIT (X32-5750-00) BOARD (X34-) MOTHER MECHA ASSY (X92-) RadioFans.CN 收音机爱 好者资料库 3 KDC-2031SA/2031SAY KDC-2031SG/2031SGY COMPONENTS DESCRIPTION ELECTRIC UNIT (X34-3412-7x) Ref. No.Application / FunctionOperation /

8、 Condition IC1SYSTEM -COMSystem control. IC3POWER SUPPLYDC5Vx2, 7.9Vx1, 8.1Vx1, 10.3V, P.CON, P-ANT output. IC4POWER ICAudio signal amplifier. IC6MUTE LOGICMute control. IC7RDS DECODERFor other models. IC8RESET“L” when detection voltage goes below 3.6V. IC10E-VOL & TUNERE-VOL, Tuner, Stereo decode.

9、IC11E2PROMSaves and writes tuner adjustment data. IC15VFD REGULATOR11.3V output voltage for LED and VFD. Q51SERGE DET“ON” when the base goes “H”. Q52BU DET“ON” when the base goes “H”. Q53ACC DET“ON” when the base goes “H”. Q71SERVO+B CONTROL SW“ON” when the base goes “H”. Q72,73SERVO+B AVROutput vol

10、tage level : 7.5V. Q74IC3 CONTROL SW“ON” when the base goes “H” (Output voltage : 10.3V). Q151PANEL 5V SW“ON” when the base goes “L”. Q155DSI ILLUMI SW“ON” when the base goes “L”. Q252IC4 STBY SW“ON” when the base goes “L”. Q330Q351, 352 MUTE DRIVER“ON” when the base goes “L”. Q351Lch PRE MUTE SWPre

11、-output is muted when the base goes “H”. Q352Rch PRE MUTE SWPre-output is muted when the base goes “H”. Q501AM RF AMPAdjusts for AM-RF gain. CD PLAYER UNIT (X32-5750-00) Ref. No.Application / FunctionOperation / Condition Generation of RF signal based on the signals from the APC circuit and pickup,

12、and IC1 RF AMPLIFIER respondinggeneration of servo error (focusing error and tracking error) signals. to CD-RWDetection of dropout, anti-shock, track crossing and off-tracking conditions, included gain control function during CD-RW. Focusing, tracking, sled and spindle servo processing. IC2 CD SIGNA

13、L PROCESSORAutomatic adjustment (focusing, tracking, gain, offset and balance) operations. built-in -COMDigital signal processing (DSP, PLL, sub-codes, CIRC error correction, audio data interpolation processing) operations, and microcomputer function. IC34ch BTL DRIVER Focusing coil, tracking coil,

14、spindle motor and sled motor driver, disc loading and eject operation. IC4L.P.F. (LOW PASS FILTER)2nd low pass filter for audio signals. Q1APC (AUTOMATIC POWER CONTROL)LD power control. Q2DIGITAL +5V SW“ON” When P. ON signal goes “L”. RadioFans.CN 收音机爱 好者资料库 4 KDC-2031SA/2031SAY KDC-2031SG/2031SGY R

15、ef. No.Application / FunctionOperation / Condition Q3Q4 SW“ON” When P. ON signal goes “L” (SW+5V is ON). Q4ANALOG +8V SW“ON” When P. ON signal goes “L” (Q3 is ON). Q5, 6CURRENT AMPCurrent driver. SWITCH UNIT (X16-294x-xx) Ref. No.Application / FunctionOperation / Condition IC1VFD DRIVER IC3REMOTE SE

16、NSOR Q1GREEN LED SW“ON” when the base goes “H”. Q2RED LED SW“ON” when the base goes “H”. Q21PAN SW5V“ON” when the base goes “H”. COMPONENTS DESCRIPTION SYSTEM -COM : IC1 on X34- (ELECTRIC UNIT) Pin No. Active Pin NameI/OApplicationProcessing Operation (H/L) 1DC ERRIDC offset detection input 2LINE MU

17、TEIPhone detectionNAVI MUTE : Over 2.5V, TEL MUTE : Below 1V 3ROTARY CWIRotary encoder input 4AVSS- 5TUN TYPE1IE-VOL setting switchRefer to “TUN TYPE” on the TRUTH TABLE 6TUN TYPE2IE-VOL setting switchRefer to “TUN TYPE” on the TRUTH TABLE 7AVREF1- 8VFD DATAFIData input from VFD driver 9VFD DATASODa

18、ta output to VFD driver 10VFD CLKOClock output to VFD driver 11LVFD RSTOReset output to VFD driver Display OFF, Key reset, TDF panel OFF : L Display ON, Key scan : H 12VFD CEOChip enable output to VFD driver 13ROTARY CCWIRotary encoder input 14LTDF DETITDF panel detectionTDF panel OFF : H, TDF panel

19、 ON : L 15PWIC BEEPOBeep output 1619NC- 20LTUN ADJIFor adjusting IC10 Adjustment=H, PS1-1,2=L, PS1-3=Hi-Z, PS2-1,2=Hi-Z, TUN DATA, CLK=Hi-Z 21TUN SDITuner search stop outputH : Station exists, L : Station does not exist MICROCOMPUTERS TERMINAL DESCRIPTION 5 KDC-2031SA/2031SAY KDC-2031SG/2031SGY Pin

20、No. Active Pin NameI/OApplicationProcessing Operation (H/L) 2224NC- 25AUD SDAI/OVolume + tuner I2C data input and output 26AUD SCLI/OVolume + tuner I2C clock input and output 27HPWIC STBYOPower IC standby outputPower IC ON : H, Power IC OFF : L 28HVOL MUTEOE-VOL mute outputL : Mute OFF, Hi-Z : Mute

21、ON 29LPWIC MUTEOPower IC mute outputPower OFF : L, Standby : L, Tel mute : L 30TUN FANC OUTOTuner block (inside the -com) checkOK : L, NG : H 31RESET2OMute for resetOutput L 32NC- 33VSS1- 34NC- 35LACC DETIACC detectionACC exists : L, ACC does not exist : H 36LBU DETIMomentary power-down detection BU

22、 exists : L BU does not exist (Momentary power-down) : H 37NC- 38PS2-2OPower supply control outputRefer to “POWER IC CONTROL” on the TRUTH TABLE 39PS2-1OPower supply control outputRefer to “POWER IC CONTROL” on the TRUTH TABLE 40PS1-1OPower supply control outputRefer to “POWER IC CONTROL” on the TRU

23、TH TABLE 41PS1-2OPower supply control outputRefer to “POWER IC CONTROL” on the TRUTH TABLE 42PS1-3OPower supply control outputRefer to “POWER IC CONTROL” on the TRUTH TABLE 43,44NC- 45CD MUTEICD mute requestL : Mute request 46LCD MSTOPOCD mecha u-com stopH : mecha -com operates, L : mecha -com is st

24、opped 47CD LOE LIM SWICD detection (chucking switch)H : Loading is finished, L : Disc does not exist 48CD LOEJI/OCD motor control Refer to “CD MECHA CONTROL OPERATION” on the TRUTH TABLE 49CD MOTOROCD motor control Refer to “CD MECHA CONTROL OPERATION” on the TRUTH TABLE 50NC- 51LCD MRSTOCD mecha -c

25、om resetH : Normal condition, L : Reset 52CD SCLI/OCD mecha I2C clock output 53CD DISC12 SWI12cm CD detection 54CD LOS SWICD loading detection 55CD SDAI/OCD mecha I2C data input and output 56OEM DISP CEI/OExternal display chip enableExternal display 57OEM DISP CLKI/OExternal display clockExternal di

26、splay 58OEM DISP DATAI/OExternal display chip dataExternal display 59DSIODSI controlDSI ON : H, DSI OFF : L, TDF DET=H (DSI blinks) 60LRESETI MICROCOMPUTERS TERMINAL DESCRIPTION 6 KDC-2031SA/2031SAY KDC-2031SG/2031SGY Pin No. Active Pin NameI/OApplicationProcessing Operation (H/L) 61NC- 62LPON FLOVF

27、D power supply ON VFD ON : H, VFD OFF : L TDF DET H (DSI blinks) : L, TDF DET L : H 63KEY REQICommunication request from VFD driverL : Key input 64NC- 65REMOTEIRemote control input 66NC- 67VSS0- 68VDD1- 69X2- 70X1- 71TEST- 72XT2- 73XT1- 74VDD0- 75AVDD- 7678TYPE 3TYPE 1IDestination switch 79NC- 80TUN

28、 SMETERITuner S-meter input MICROCOMPUTERS TERMINAL DESCRIPTION TRUTH TABLE TUN TYPE TYPE 1TYPE 2 General models commercially-designated as pure KENWOOD brand (Initial value) LL Initial value setting POWER SUPPLY IC (IC3) CONTROL SEL1 (Pin No. 11) PS1-2PS1-3PS2-1ILLUMIP-CONP-ANT LLLOFFOFFOFF LLHONOF

29、FOFF HLHONONOFF HHHONONON SEL2 (Pin No. 12) PS1-1PS2-2AUDIOSW5AM LLOFFOFFOFF HLONONOFF HHONONON CD MECHA CONTROL OPERATION CD LOEJCD MOTORCD MECHA OPERATION LHLoad HHEject Hi-ZLStop Hi-ZHBrake 7 KDC-2031SA/2031SAY KDC-2031SG/2031SGY CD MECHANISM -COM : IC2 on X32- (CD PLAYER UNIT) Pin No. Active Pin

30、 NameI/OApplicationProcessing Operation (H/L) 1TVDOTraverse drive output (PWM output). 2SPLOSpindle motor drive output (PWM output). 3NC-No connection. 4PWMOMultipurpose PWM output. 5TBALOTracking balance adjustment output (PWM output). 6FBALOFocusing balance adjustment output (PWM output). 7NRFDETI

31、RF detection signal input.L : Detection 8OFTIOff-tracking signal input.H : Detection 9BDOIDrop-out signal input.H : Detection 10LDONOLaser-on signal output.H : Focus ON 11DSLBODSL balance output. 12DVDD1-Power supply for digital circuit. 13DVSS1-GND for digital circuit. 14AVSS2-GND for analog circui

32、t.For DSL, PLL and A/D converter 15DSLFI/OLoup filter for DSL and bias output for ARF. 16ARFIRF signal input. 17RFSWIDSL circuit time constant switch. 18PLLFI/OLoup filter for PLL. 19PLLF2I/OLoup filter character switch for PLL. 20IREFIReference current input. 21RFENVIRF envelope signal input. 22TRC

33、RSITracking cross signal input. 23TEITracking error signal input. 24FEIFocusing error signal input. 25AVDD2-Power supply for analog circuit.For DSL, PLL and A/D converter 26AVSS1-GND for analog circuit.For Lch/Rch audio output 27OUTRORch audio output. 28AVDD1-Power supply for analog circuit.For Lch/

34、Rch audio output 29OUTLOLch audio output. 30DVSS3-GND for digital circuit. 31CSEL- 32NC-No connection. 33ASEL- 34MSEL0- 35MSEL1- 3639NC-No connection. 40VREFP-Reference power supply input for A/D converter. 41HOT- MICROCOMPUTERS TERMINAL DESCRIPTION 8 KDC-2031SA/2031SAY KDC-2031SG/2031SGY MICROCOMPU

35、TERS TERMINAL DESCRIPTION Pin No. Active Pin NameI/OApplicationProcessing Operation (H/L) 428EJE SW- 4312EJE/SDET SW- 44LOE/LIM SWI Loading-end detection /H : Loading-end detection Pick-up inner circumference detection.L : Pick-up inner circumference detection 4549NC-No connection. 50DVDD2-Power sup

36、ply for digital circuit. 51X1IMain clock input. 52X2OMain clock output. 53DVSS2-GND for digital circuit. 54XSUB1- 55NC-No connection. 56TEST1-Test terminal.Normal condition : “H” fixed 57TEST2-Test terminal.Normal condition : “H” fixed 58,59NC-No connection. 60DRV MUTEODriver mute control.L : Mute O

37、N, H : Mute OFF 61LMUTE LOAudio Lch mute output. 62LMUTE ROAudio Rch mute output. 63LRSTILSI reset input. 64OCD CLK- 65LMSTOPIStandby detection. 66DATAI/OI2C bus data line (Communication line to system -com).During serial writer is connected. 67SBIOIData input.During serial writer is connected. 68LC

38、LKI/OI2C bus clock line (Communication line to system -com).During serial writer is connected. 69TXODigital audio interface signal output. 70NC-No connection. 71XSEL- 72MCNTILoading control / Eject control.L : OFF (Host control), H : Mecha -com control 73P. ONOAudio & Servo power supply control.L :

39、Power supply ON. H : Power supply OFF 74,75NC-No connection. 76CD-RWOCD-RW control.H : CD-RW, L : Normal disc 77NC-No connection. 78DVDD3-Power supply for digital circuit. 79FODOFocusing drive output (PWM output). 80TRDOTracking drive output (PWM output). 9 KDC-2031SA/2031SAY KDC-2031SG/2031SGY TEST

40、 MODE How to enter the test mode While simultaneously press PRESET “1” key and PRESET “3” key, press “RESET” button. How to release the test mode Press “RESET” button. (The release cannot be achieved in the conditions of POWER OFF and ACC OFF.) Initial conditions of the test mode The source is “STAN

41、DBY”. The displays all lit up. The volume is at 10dB (The display shows “30”.) LOUD is “OFF”. SYSTEM Q is “NATURAL”. BEEP is sounded at all time with the key depressed for less than 1 second. Special displays when all indicator lights are lighted When “PRESET” keys are pressed while all indicators f

42、or the STANDBY sources are lighted, the following displays will ap- pear. PRESET Version display (4 digits : month, date) “1” key(4digits : hour, minute) (Display) : XXXX xxxx PRESET Serial number display (4 digits) (4 digits) “2” key(Display) : XXXX xxxx PRESET When pressed for less than 1 second :

43、 POWER ON “3” keytime display (STANDBY source time is not counted.) (Display) : _ _ _ X xxxxMAX 60,000 (hours) * The display is cleared by pressing the key for more than 2 seconds. PRESET When pressed for less than 1 second : CD operation “4” keytime display (Display) : _ _ _ X xxxxMAX 60,000 (hours

44、) * The display is cleared by pressing the key for more than 2 seconds. PRESET When pressed for less than 1 second : CD EJECT “5” keynumber display (Display) : _ _ _ X xxxxMAX 60,000 (times) * The display is cleared by pressing the key for more than 2 seconds. PRESET When pressed for less than 1 sec

45、ond : Panel open/ “6” keyclose number display (Display) : _ _ _ X xxxxMAX 600,000 (times) * The display is cleared by pressing the key for more than 2 seconds. “FM” ROM CORRECTION version display key(Display) Effective : Rxxx (x : number) Not effective (When not able to read) : R Not effective (When

46、 version is different) : R “AM” IC10 adjustment status (Refer to “ADJUSTMENT” on keythe following page.) (Display) Adjustment complete : E2OK Adjustment not completed : E2ER Communication error : ICER * When other than “E2P _ OK _ _” , Pin No. 30 will become “H”. “” Mechanism error detection status

47、key Communication error Error No. 1 Error No. 2 Error No. 3 Communication error (Error No. 1 is the most recent error.) (Display) Communication OK : ICOK Communication error : ICER Not detected : En (n : 13) Detected : En ( : error code) * The display is cleared by pressing the key for more than 2 s

48、econds. 10 KDC-2031SA/2031SAY KDC-2031SG/2031SGY ADJUSTMENT DC offset error detection confirmation mode Confirmation mode : While depressing PRESET “3” key and PRESET “6” key simultaneously, press on the “RESET” button. (Display) Detected : DCER Not detected : DCOK * By pressing “CLK” key while “DCE

49、R” is being displayed, detection status is cleared. This will result in the display of “DCOK”. Release Method : Press “RESET” button. Mechanism memory clear confirmation mode Confirmation mode : While depressing “ATT” key and “Q” key simultaneously, press “RESET” button. (Display) : MCLR * Two seconds after the confirmation mode boots up, Mecha- nism memory clear as a result is displayed. (Display) Clear status display normal completion : CD _ O Clear status display abnormal completion : CD _ Release Method : Press “RESET” button. A