Kenwood-KDC-2018-Service-Manual电路原理图.pdf
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1、 2000-12 PRINTED IN JAPANB51-7701-00(S) 1752SERVICE MANUALCD RECEIVERKDC-216S/2018CRSCADJKDC-216SAUDPWR OFFLOUD SCAN RDM REP AMEAUTOCOMPACTDIGITAL AUDIO45Wx4Knob(RELEASE)(K24-3665-04)Knob(EJ)(K24-3653-04)Front glass(B10-3294-01:216S)(B10-3297-01:2018)Panel assy(A64-2202-02:216S)(A64-2209-02:2018)Kno
2、b (Q)(K24-3652-04)Knob(VOL)(K25-1256-03)Knob(1-6)(K25-1253-03)Knob(CLK)(K25-1254-03)Knob(FM/AM)(K25-1255-03)DC cord(E30-4783-05:216S)(E30-4784-05:2018)Plastic cabinet assy(A02-1486-13)Mounting hardware assy(J21-9641-03)Stay(J54-0606-04)Screw set(N99-1610-15)Lever(D10-4589-04)Screw set(N99-1632-05)l
3、KDC-216SKDC-216S/20182BLOCK DIAGRAMKDC-216S/20183COMPONENT DESCRIPTIONl SWITCH UNIT(X13-9880-13)Ref.No. Component Name Application/Function Operation/Condition/CompatibilityIC1 LC75853NE LCD driver Ready on key-matrixQ1 DTA114EK or KRA102S or key-matrix permission SW Ready on key-matrix, ON when the
4、 base goes “Lo“UN2111l ELECTRIC UNIT(X25-8690-XX)Ref.No. Component Name Application/Function Operation/Condition/CompatibilityIC1 UPD780058GC231 System m -COM.IC2 TDA7407D E-VOL. & N.C. MPXIC4 TDA7386 Power ICIC7 BA4911-V4 Power supply ICIC8 HD74HC27FP Mute gate IC 3 input NOR gate x3IC11 S-80830ANN
5、P RESET IC Detection voltage 3.0VIC12 BR24C01AF or BR24C01AF-W E2PROMM24C01-WMN6T or S-24C01BQ10 2SC4081 or 2SD1819A B.U. detection Detect BU voltageQ20 2SC4081 or 2SD1819A ACC detection Detect ACC voltageQ40 DTA124EUA or UN5112 PREOUT mute driver Mutes when base is “Lo“ (controls Q221-224)Q50 2SA10
6、36K SW 5V ON when the base is “Lo“.Q51 UMC2N SW 14V ON when the base is “Hi“ (controls Q55)Q53 UMC2N Switch for power supply IC ON when the base is “Hi“ (controls SW1 pin of powersupply IC)Q55 2SD2375 or 2SD2396 AVR for SERBO +B Output issued when SW14V is on (base is “Hi“)Q70 2SC4081 or 2SD1819A SU
7、RGE detection Detect SURGE voltageQ101 2SC4081 or 2SD1819A DSI SW DSI LED turns ON when base is “Hi“Q102 DTA114YUA or UN5114 PANEL 5V SW ON when the base is “Lo“Q223,224 DTC143TUA or UN5216 PREOUT MUTE Mute applied to PREOUT (output) when base is “Lo“Q251 DTC114YUA or UN5214 Power IC SVR SW Turns ON
8、 when base is “Hi“ and capacitor on SVRpin dischargesKDC-216S/20184MICROCOMPUTERS TERMINAL DESCRIPTIONl Terminal DescriptionPin Function I/O Description Processing Operation1 AV CONT O A/D converter reference voltage control output ”Hi”: ON / ”Lo”: OFF2 IC2 TYPE0 I IC2 setting terminal ”Lo”: Initial
9、 value3 IC2 TYPE1 I IC2 setting terminal ”Lo”: Initial value4 AVSS - Ground connection terminal connected to GND5 M MUTEL I Muting request from the MICOM. of CD mecha. ”Lo”: Mute request6 N.C O Not used7 AVREF1 I D/A converter reference voltage input8 ILLUMI O Illumination AVR ON/OFF control output
10、”Hi”: AVR ON9 L RES O Reset output to the LCD driver IC ”Lo”: Reset10 PANEL I Panel open/close detection input ”Lo”: Panel closed11 L DATAL I Data input from the LCD driver IC12 L DATAS O Data output to the LCD driver IC13 L CLK O Clock output to the LCD driver IC14 N.C O Not used15 N.C O Not used16
11、 CH-DATAC I Data input from changers17 CH-DATAH O Data output to changers18 CH-CLK I/O Clock input/output with changers19 L CE O CE output to the LCD driver IC ”Hi”: Active20 N.C O Not used21 M RST O Reset output to the MICOM. of CD mecha. ”Lo”: Reset22 M STOP O Stop request to the MICOM. of CD mech
12、a. ”Lo”: Stop23 MOSW O CD mechanism loading motor control output ”Hi”: Loading & Eject / ”Lo”: other24 PLL SCL O Clock output to the tuner pack25 AM+B O AM+B control ”Hi”: during AM reception26 FM+B O FM+B control ”Hi”: during FM reception27 M-SCL I/O Clock input/output with the MICOM. of CD mecha.2
13、8 DSI O DSI output ”Hi”: LED ON29 LO/EJ I/O CD mecha.Loading/Eject switching output ”Lo”: Loading / ”Hi”: Eject30 SW3 I Down & limit switch detection input ”Hi”: Chucking / ”Lo”: Pickup most inner position31 R DATA I Data input from RDS decoder32 R QUAL I Quality input from RDS decoder33 VSS1 - Grou
14、nd connection terminal connected to GND34 SD I SD input from the tuner pack ”Hi”: Station detected35 IC2 SCL O Clock output to the E-VOL. IC36 M-SDA I/O Data input/output with the MICOM. of CD mecha.37 PLL SDA I/O Data input/output with the tuner pack38 IC2 SDA I/O Data input/output with the E-VOL.
15、IC39 MUTE O Mute control output ”Hi”: Mute ON / ”Lo”: Mute OFF40 N.C O Not used41 AFC O AFC control output ”Lo”: during FM seek42 CH-REQH O Request output to changers ”Lo”: Request43 CH-CON O Changer control ”Lo”: Standby / ”Hi”: ON44 N.C O Not used45 P MUTE O Power IC mute control ”Lo”: Mute46 SVR
16、O Power lC reset terminal When the momentary power down, after ACCOFF/ON is detected and after POWER ON/OFF, the output goes ”Hi” temporarily.47 STBY O Power IC standby control output ”Hi”: POWER ON mode48 P CON O Power control ”Hi”: POWER ON mode except ALL OFF mode49 P ANT O Antenna control ”Hi”:
17、during FM/AM reception50 BEEP O BEEP sound output51 ACC DET I ACC detection input ”Hi”: ACC OFF / ”Lo”: ACC ON52 BU DET I Momentary power down detection input ”Hi”: When momentary power down detectedor BU OFF / ”Lo”: BU ON53 N.C O Not used5 6KDC-216S/2018MICROCOMPUTERS TERMINAL DESCRIPTIONKDC-216S/2
18、018ADJUSTMENTPin Function I/O Description Processing Operation54 N.C O Not used55 N.C O Not used56 SW5 O SW 5V control ”Lo”: POWER ON mode57 P ON O Microprocessor peripheral power supply control terminal ”Hi”: ACC ON or during CD Loading/Eject58 TYPE2 I Destination type input terminal 259 N.C O Not
19、used60 RESET I Reset input terminal ”Lo”: System reset61 REMO I Data input from the remote control light sensor62 R CLK I Clock input from RDS decoder63 CH-REQC I Request input from changers ”Hi”: Request64 SW1 I Loading detection ”Lo”: CD chucking65 KEY-REQ I Key request terminal ”Lo”: Request66 SW
20、2 I 12cm disc detection terminal ”Lo”: 12cm disc67 VSS0 - Ground connection terminal connected to GND68 VDD1 - VDD connection terminal69 X2 - Main clock resonator connection terminal70 X1 I Main clock resonator connection terminal71 IC(TEST) - Not used connected to GND72 XT2 - Sub clock resonator co
21、nnection terminal N.C.73 N.C I Sub clock resonator connection terminal connected to BU5V lines74 VDD0 - VDD connection terminal75 AVREF0 I A/D converter reference voltage input76 SMETER I S-meter input from the tuner pack77 PHONE I PHONE detection input 1V or less: TEL MUTE,2.5V or greater: NAVI MUT
22、E78 NOISE I Noise detection input79 TYPE0 I Destination type input terminal 080 TYPE1 I Destination type input terminal 1Test Mode1. How to enter test modeWhile holding the FM key and preset 6 key, reset the unit.All display segments light up when the test mode is entered.2. How to exit from test mo
23、deReset the unit.The test mode is not terminated by turning ACC off, poweroff, momentary power down or panel detaching.3. Test mode specifications of CD receiver Pressing the Track Up key jumps to tracks in the followingsequence:No.9fi No.15fi No.10fi No.11fi No.12fi No.13fi No.14fi No.9(Repeats the
24、 cycle) Pressing the Track Down key jumps to the trackimmediately before the track being played. Pressing Preset 1 key jumps to track No. 28. Forced ejection is not provided.4. Test mode specifications of cassette receiver Blank skip (B.S) is off. Pressing the ATT key ejects the cassette.5. Audio fu
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- KenwoodKDC2018ServiceManual 电路 原理图