Kenwood-DMVH-7-Service-Manual 电路图 维修手册.pdf
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1、MINI DISC RECORDER DM-VH7 SERVICE MANUAL 1999-6/B51-5544-00 (K/K) 3632 70% 646 609608606 617607619 660 rec level recording eject standby enter stop rec o.t.e. on/standby mode disc loading mechanism minidisc recorder DM-VH7 20bit A/D The value shown in ( ) is the voltage measured at the moment of STO
2、P. The voltage followed by (REC) refers to the value during MD RECORD- ING. DM-VH7(K) PCBSD2,2P( 99.10.29 2:48 PM yW 1 QSUWPRTVYX Y22-8050-11 DM-VH7 )( )( 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 CE M
3、ODE2 FWE EXTAL VSS XTAL VCC STBY NMI RESET MODE1 MODE0 AVCC VREF SCL SDA VCC VSS 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 CTXD CRXD DQSY SQSY XLAT SWDT SRDT SCLK HMUTE SENS MNT3 MNT2 MNT0 MN
4、T1 XINT TX RECP XRST LDON RMS IDSW HEADPOS BITRATE DISCINSW SLTSW AVSS LOADM- LOADM+ EMPHA ADDARST MUTE POWER FRDT FWDT 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26H+5V HGND +3.3V(OUTPUT) BACKUPV CTXD CRXD BACKON CE MECHARST AINR(DATA) DGND AINL(BCK) -5V(GND) DGND GND AOUTR(L
5、RCK) A+5V AOUTL(MCK) D+5V DIN2 M+5V DIN1 M+5V MGND DOUT MGND 1234567 12 11 10 9 8 7 6 5 4 3 2 1 SDTI SCLK LRCK DIF1 DIF0 AGND VA AINL- AINL+ NR- NR+ REPH 13 14 15 16 17 18 19 20 21 22 23 24 SDTO SMUTE DEM0 DEM1 NCKI VD DGND PD CMODE AOUTL AOUTR VCOM C37 0.1 C39 4.7u25 + C35 2200P R3 150 C36 0.1 C38
6、4.7u25 + C34 2200P X2 10MHz 3.3K R176 87 88 89 90 91 92 84 R182 47K R183 47K R172 47K R181 47K 0.1 C166 1 2 3 100u6.3 C190 + 100u6.3 C187 + 32 31 6 7 8 5 2 1 4 3 39 38 10K R170 10K R171 0.1 C171 R52 10 R53 10 R4 150 +5V 10u10 + 0.1 0.1 10u10 C41 + + 10u10 R10 100 R11 100 1K R178 37 41 40 47 44 43 48
7、 R16 470K R15 470K 66 67 C170 0.1 R168 4.7K +5V +5V 76 77 R17 39 37 38 66 67 31 32 +B +B +B +B+B+B +B+B+B+B +B +B +B +B +B +B +B +B R186 470K R187 470K R173 R174 78 81 82 85 83 77 76 98 96 2.2 R2 R149 100 +5V 47K 100 99 27 28 97 47K 21 19 75 59 75 C33 C40 C32 C31 +5V 0.1 C44 1 +5V +3.3V +5V +5V +5V
8、+5V W12 +3.3V +3.3V OUT GND IN +5V +5V +5V+5V +3.3V 4.7 R160 100u6.3 C198 + +3.3V+3.3V +3.3V +3.3V+3.3V+3.3V +3.3V R13 100 +3.3V +3.3V +3.3V +3.3V+3.3V +3.3V +3.3V +3.3V +3.3V +5V 59 +5V +5V+5V+5V +B 5V5V5V5V 59 59 29 97 +B +5V +B +B IC24 IC12 IC10 IC6 DM-VH7(J/K) (1/2) A CN1 CN5 Q10 Q8 Q11 MD MECHA
9、 u-COM 3.15V AVR 3.3V AVR DA/AD CONVERTER DIGITAL REC DIGITAL IN1 IN2 DIGITAL PLAY E2PROM X25-A/3 2/2 -CN4 3.2V 3.3V 3.3V 3.3V 3.2V 0V 0V 0V 0V 0V 0V 2.0V 3.2V 0V 3.2V 3.2V 1.3V 1.5V 3.2V 3.2V 3.3V 1.8V 0.9V 3.2V 3.1V 3.1V 3.1V 1.2V 3.0V 3.2V 3.1V 3.2V 3.2V 3.2V 0V 0V 0V 3.2V 3.1V 3.1V 3.1V REC: 0.4
10、V REC: 3.2V 3.2V 0V 0V 3.3V 3.3V 2.6V 0V 5.0V 1.6V 1.0V 1.6V 3.3V 3.3V 2.5V 2.5V 2.5V 2.5V 4.9V 3.2V 3.3V 1.6V 0V 1.1V 3.2V 2.5V 0V 2.5V 3.3V5.1V (X33-1190-00) 2SA1534A DTA144EUA DTC114YUA DTC143TUA UN5119 UN5216 2SA1576A 2SA1586 2SC4116 2SD2061 FMW12SB798-DL2SD2012 DTA124EUA DTC124EUA NJM4565MBA178
11、05T UPC7805AHF UN52122SK246HD74LVC08T DA204UCXA2523ARTA8409F BH6511FSHD74UH08 SM6451AVL88M33T BD7911FV CAUTION: For continued safety, replace safety critical compo- nents only with manufacturers recommended parts (refer to parts list). indicates safety critical components. For continued protection a
12、gainst risk of fire, replace only with same type and rating fuse(s). To reduce the risk of electric shock, leakage-cur- rent or resistance measurements shall be carried out (exposed parts are acceptably insulated from the supply circuit) before the appliance is returned to the customer. DM-VH7(K) SD
13、2P( 99.10.29 3:20 PM y W 3 ZAAACAEAGAIABADAFAH 2 1 3 5 7 4 6 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 31 32 3
14、3 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 UARTB TXD UARTB RXD MECHA-RST MECHA-CE BACKUP-V-ON BACKUP-V-CHK EJECT POWER LCD BL DISP RST REM CE RXRDYA NMI VCC XIN VSS XOUT RESET NC NC CVSS BYTE DISP CLK DISP DTIN DISP DTOUT DISP CE NC VOL CLK VOL DATA VOL LEN AVCC AVREF NC AVSS PROTECT X-Y P
15、OSI.SW INI SW BUCKUP V KR2 KR1 KR0 D0 D1 D2 D3 D4 D5 D6 D7 A19 A18 A17 A16 A15 A14 A13 A12 A11 A10 A9 VCC A8 VSS A7 A6 A5 A4 A3 A2 A1 A0 SDA SCL MUTE NC NC STANDBY NC REC. UTTX1 UTRX1 NC NC UTTX2 UTRX2 SDATA SBUSY RDY(+5V) ALE(NC) HOLD(+5V) HLDA(NC) BCLK(NC) RD(NC) BHE(NC) WR(NC) NC SRAM CS(NC) UART
16、 CS(NC) PROM CS(NC) 1 2 3 4 GND SDATA SBUSY SGND 12345678910 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 H+5V HGND +3.3V BACKUP CTXD CRXD BACK-ON CE MECHA.RST AINR DGND AINL -5V DGND GND AOUTR A+5V AOUTL D+5V DIN2 M+5V DIN1 M+5V MGND DOUT MGND SGND SBUSY 4 3 GND SDATA 1 2 0.01 C108 330 R132 100K
17、 R134 330 R131 100K R133 220P C106 100K R139 R140 220P C107 100K C.T. X1 10MHz 2 1 12 100 R124 0.1 C103 47K R118 7 4 6 5 R123 47K R113 47K R114 10K C102 100P C104 0.1 R116 100 20 R127 100 21 R115 47K 22 24 R117 47K R125 47K 26 R119 47K R126 47K 28 29 100 R121 30 100 R120 R137 47K R110 47K R111 47K 4
18、.7K R112 47K 80 78 R108 90 89 R103 47K R101 47K R100 47K C113 0.01 100 R102 4.7K R104 R106 47K GND OUTIN 0.1 C15 100u10 C16 + 10K R18 0.1 C14 1000u6.3 C13 + 10K R17 330 R15 4.7K R16 1K R14 100 R13 470u16 C24 + 470 R26 100 R27 470 R29 10u16 C25 + 470u6.3 C26 + 330 R11 100u10 C10 + + 10u16 C12 VDD 3 2
19、 GND 1 OUT 0.1 C77 100u10 C79 + VDD GND 3 C78 0.1 2 OUT 1 47u10 47u10 1200P1200P R56 3.9K + 4.7K C62 47u10 100K R50 R52 C54 6.8K R54 100K R49 C53 R53 6.8K C52 820P 4 3.9K R58 6 5 3.9K R57 C56 100P 100P R60 7 6.8K C87 C86 6.8K C55 100P 0.01 R55 3.9K4.7K + C61 47u10 R51 820P 3 2 8 C51 1 R59 R67 R69 22
20、K R64 2.2K C58 R62 100K 1K R68 R61 100K 1K R66 1K 470P C60 470P C59 2.2K R63C57 1K R65 + + Q23,24 R92 100 R91 100 0.1 C76 24K 36K R32 R34 470P C32 10u16 + C34 24K R36 C36 100P 10u16 3 4 2 1 + C38 24K 36K 470P C31 R33 + 10u16 24K R35 100P C35 R31C33 10u16 6 8 5 7 + C37 R40 C46 10u16 + 1.2K R42 100K 2
21、 3 C88 100P 10u16 C45 R39 C84 0.01 + 100K 1.2K R41 6 5 15K4 C50 100P R44 1 C48 + 10u16 + 100P C49 15K R43 7 8 10u16 C47 R46 1 2 1000P + C82 C41 10u16 C43 0.01 100P 220 C85 100 C44 0.01 C42 10u16 + 9 10 11 12 13 14 15 16 8 7 6 5 4 3 2 1 RSTN ADRS1 ADRS2 DVDD LOUT LIN AVDD VRL MDT MCK MLEN DVSS ROUT R
22、IN AVSS VRR 0.01 C83 VCC GND 114 2 3 4 5 6 7 13 12 11 10 9 8 38 37 37 38 100 R129 25 30 29 26 28 OUTPUT ANALOG 100 23 95 75 92 12 19 27 19 27 19 8 8 75 12 1K R45 0.01 C80 100P C81 +7.5V +7.5V +7.5V +7.5VA+5VA+5V +5V +5V+5V +5V+5V+5V A+5VA+5VA+5VA+5VA+5V A+5V A+5VA+5V A+5V A+5V A+5V A+5VA+5VA+5V A+5V
23、A+5V A+5V +5V +5V+5V +5V+5V+5V +5V+5V +5V +5V +5V +3.3V+3.3V +3.3V+3.3V +3.3V+3.3V +3.3V+3.3V +3.3V 9.5V9.5V u+5Vu+5V u+5V u+5V u+5V u+5Vu+5V u+5V u+5V u+5V u+5Vu+5V u+5Vu+5V u+5Vu+5Vu+5V u+5V u+5Vu+5V u+5V u+5V +3.3V A+5V +5V +5V +5V +5V+5V +5V 5V5V 5V 5V5V5V5V5V5V 5V 5V5V 5V5V 5V 10K R122 R128 100
24、 R130 100 47K R105 560 R28 R10 390 INPUT 1.2V/3.3K 0.3V/47K IC11 (X25-6240-XX) (A/3) A1 A2 IC7 IC10 A J3 CN4 MD u-COM CONTROL SYSTEM D23 D21 D22 Q27 ON/OFF BACKUP D20 D19 IC4 Q7 Q6 Q3 Q4 Q13 Q14 5V AVR 5V AVR -5V AVR D3 OPTICAL DIGITAL IN IC9(2/2) IC9(1/2) Q23 Q24 Q21 MUTE MUTE DRIVE AMP IC6(1/2) AM
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