Kenwood-KACX-4-R-Service-Manual 电路图 维修手册.pdf

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1、 2007-4 PRINTED IN JA PAN B53-0520-00 (N) 426 KAC-PS4D KAC-X4R KAC-PS4D KAC-X4R Dressing Panel (A21-6578-01) : KAC-X4R (A21-6579-01) : KAC-PS4D Screw & Wrench Key set (N99-1795-05) Fuse (25A) (F52-0014-05) Compact disc (W01-1701-05) KAC-PS4D/X4R POWER AMPLIFIER SERVICE MANUAL This product uses Lead

2、Free solder. This product complies with the RoHS directive for the European market. RadioFans.CN 收音机爱 好者资料库 2 KAC-PS4D/X4R BLOCK DIAGRAM ISO ARCA IN ALVRAMPSE to DIF ADC Ach SE to DIFISO AAMPVR SE to DIF SE to DIF ISO A ISO A AMP AMP VR VR ADC Bch RCA IN AR RCA IN BR RCA IN BL DSP IC1IC307 15V15V15V

3、5V,3.3V DRIVERPWR FETFILTER DRIVERPWR FETFILTER DRIVER DRIVER PWR FET PWR FET FILTER FILTER FEEDBACK, DPSC, ADCS OVERCURRENT DETECTION SP OUT AL SP OUT AR SP OUT BL SP OUT BR HV,15V 12V,5V,3.3V,1.8V L/R DAC 12V REG E2PROM CURRENT DETECTOR DETECTOR-1 VOLTAGE TEMPERATURE DETECTOR DETECTOR OUTPUT DC 5V

4、-3V INTERFACE RCA OUT L/R ROTARY ENCODER DETECTOR PCON RESET IC REG 3.3V SW P/S FDFWD DAC ADC DSP USB ANTI PUMP FEED BACK SPDIF REG 1.8V SW DSP A5V REG D5V REG DAC ADC P/S FDFWD FEED BACK SPDIF ANTI PUMP FINAL FINAL FEED BACK ANTI PUMP +HV REG HV REG CONTROL PWM LC FILTER FUSE GND BATT14.4V REG BU5V

5、 SWITCH SLIDE FL DRIVER FL P/S FDFWD FEED BACK SE to DIF ISO AMP FINAL ANTI PUMP MICRO VOLTAGE DETECTOR-2COMPUTER MICRO REG +14.5V SW 5V, 3.3V IC900 15V REG IC310 IC511 IC510 IC503 IC500 IC512 IC705 Q911 IC101,102,201,202ON/OFF CONTROL TRANSFORMER*2 RadioFans.CN 收音机爱 好者资料库 3 KAC-PS4D/X4R COMPONENTS

6、DESCRIPTION PREAMPLIFIER UNIT (X08-4350-10) Ref. No.Application / FunctionOperation / Condition / Compatibility IC1AR/BRch 8dB buffer-amp IC2AL/BLch 8dB buffer-amp IC100FL driver and Key MatrixCommunicate with microcomputer (on X09 unit). AUDIO UNIT (X09-8620-10) Ref. No.Application / FunctionOperat

7、ion / Condition / Compatibility IC1 DSP (digital amplifi er processor) IC3resetdetect 3.3V VDD for DSP etc IC100,200,604buffer IC101,102,201,202MOS FET driver IC301,302,401,402Isolation amp to reduce common mode noise IC303,304,403,404Amp for differential input of AD converter IC306Buffer amp for co

8、mmon voltage of AD converter IC3074ch AD converter for analog input IC309 Low pass fi lter for Line out IC310DAC for pre-out IC500Error Amp for +/-16V regulator IC502SW power supply control IC IC50312V voltage regulator IC507buffer for sync clk IC50914.5V SW regulator IC510,511dcdc converter for 3.3

9、V and 1.8V IC5125V voltage regulator IC601Amp for differential input of AD converter IC602Buffer amp for common voltage of AD converter IC603,704,804AD Converter for feedback IC605FET driver for (Q601,602) (Anti-pump circuit) IC701,702,801,802Amp for differential input of AD converter IC703Buffer am

10、p for common voltage of AD converter IC7055V voltage regulator IC900system micro IC901control line 3.3V 5V translation buffer IC902E2PROMfor installer memory, error log. IC904Amp for sensing GND voltage Q101104,201204SW transistor for SP output line Q105108,205208Current protection detect Q109,110,2

11、09,210on/off SW of N_HB_ERR (SP out over current det.) Q111,112,114,115, Q211,212,214,215 Speaker mute TR RadioFans.CN 收音机爱 好者资料库 4 KAC-PS4D/X4R COMPONENTS DESCRIPTION Pin No.Application / FunctionOperation / Condition / Compatibility Q113,116,213,216SP Mute driver Q301,401Mute circuit of Line out Q

12、302Mete driver of Line out Q303AND circuit of SW5V & Preout Mute Q503508Driver of SW power supply Q509516SW transistor for SW regulator Q517AVR of +16V Q520AVR of -16V Q521523AVR on/off control (1.8V 3.3V on) Q524Interception circuit of VFL Q525Secondarily stage of Darlington AVR of VFL and FIL+ Q52

13、6primary stage of Darlington AVR of VFL and FIL+ Q527529Secondarily stage of Darlington AVR of FIL+ Q530primary stage of Darlington AVR of FIL+ Q531Interception circuit of VFL Q533 fi xed current supply of +/-16V Q601,602SW transistor for Anti-pump circuit Q603,604current detect for Anti-Pump circui

14、t Q605on/off SW of N_PSCURR (Anti-pump over current det.) Q901On/off SW of SW5V Q902Logo LED driver Q903inverter of +40V detect circuit Q904Interception circuit of B14V Q905On/off SW of Q904 Q906,907SP DC detect circuit Q908Interception circuit of SW5V Q909Protect circuit for Vdd5V Q910NF control fo

15、r Vdd5V Q911Interception circuit of BU5V Q912On/off SW of SW14V Q913Interception circuit of SW14V Q914,915P-con detector Q916BATT14V down detector Q917Inverter of FAN CTRL line from -con Q918On/off SW of FAN+B Q920Secondarily stage of Darlington AVR of FAN+B Q922,923On/off SW of SP MUTE Q924Inverter

16、 of OUT_OF_BOOT line 5 KAC-PS4D/X4R MICROCOMPUTERS TERMINAL DESCRIPTION SYSTEM -COM 78F0536GK011A (X09-862 : IC900) Pin No.Pin NameI/OApplicationProcessing / Operation / Description 1/P_CONIClear the stop mode by P-CON ON L: Clear the stop mode (INTP0) H: (P120) 25NCONot used Output L fi xed 6/RESET

17、IReset 7OVFI ADC overfl ow detection H: When the overfl ow is detected displays on VFD 8NCONot used Output L fi xed 9FLASH_WI Used when writing in the fl ash 10,11NCONot used Output L fi xed 12REGC- 13VSS-Connect to GND 14EVSS-Connect to GND 15VDD-Connect to VDD 16EVDD-Connect to VDD 17D2_CLKI/O D2

18、control (75kHz max)I2C BUS 18D2_DATAI/O D2 controlI2C BUS 19/N-ERRORIOver current detection L: Enter the protection mode when the over current is detected. Turn off the amplifi er power supply and display the error (E-03). Automatically recover in 200msec. 20NCONot used Output L fi xed 21/OC_DETIOve

19、r current detection Check current every 1ms, and when “L” is detected 15 times in succession the over current is detected and enter the over current protection mode. Turn off the amplifi er power supply and display the error (E-03). Automatically recover in 200msec. 22/D2_RESETOReset TENZINGL=RESET

20、23/D2_RST_DETITenzing reset detection When Low is detected at pin23 while the pin22 of the -com is High,temporarily turn off the amplifier and reboot the system. 24,25NCONot used Output L fi xed 26/PREOUT_MUTEOMute the pre-outL: MUTE ON 27/DSP_MUTEOMute TENZINGL: MUTE ON 2830 NCONot used Output L fi

21、 xed 31/SP_MUTEOMute the speaker outputL: MUTE ON 32OUT_OF_BOOTI Receive BOOT completion status from TENZING L: Tenzing BOOT completion (DSP is in its operation) 33BOOT_CTRL (Not Used)I DSP BOOT control (No -com control) L: BOOT from -com H: BOOT from EEPROM 34ROTARY_CWIEncoder pulse inputDetect pul

22、se phase difference 35ROTARY_CCWIEncoder pulse inputDetect pulse phase difference 3614V_SWOSW14V ON/OFF SW14V ON/OFF Amplifi er power supply ON: H, Initial condition L 6 KAC-PS4D/X4R Pin No.Pin NameI/OApplicationProcessing / Operation / Description 375V_SWOSW5V ON/OFF SW5V ON/OFF Power supply ON: H,

23、 Initial condition L 38VD DOWNI Detection of voltage at momentary power down H: Processing to detect voltage at momentary power down (Enter the stop mode when the P-CON is down.) 39FAN_CTRLOFAN controlH: FAN_ON 40PON_ILLUMOLOGO LED+B SWH: ON, L: OFF, Initial condition L 41PON_FLO FL power supply (Gr

24、id and Filament) control H: ON, L: OFF 42/VFD_INH (/BLK)OInhibit FL driver displayH: Display, L: No display 43VFD_CEO 44VFD_DATA_M (FVD.DI)O 45VFD_DATA_S (FVD.DO)I 46VFD_CLKO 47AVREF-DA REF voltage 48AVSS- 49AD_VIDetects BU voltage (For display)Displays the voltage and condition. 50AD_IIDetects prim

25、ary current (For display)Converts into the current and displays current value. 51TEMP6I Temperature detection 6 (at power supply side) (For display and protection) Displays the temperature and overheat protection. 52TEMP5I Temperature detection 5 (at power supply side) (For display and protection) D

26、isplays the temperature and overheat protection. 53TEMP4I Temperature detection 4 (at power supply side) (For display and protection) Displays the temperature and overheat protection. 54TEMP3I Temperature detection 3(at power supply side) (For display and protection) Displays the temperature and ove

27、rheat protection. 55TEMP2I Temperature detection 2 (at power supply side) (For display and protection) Displays the temperature and overheat protection. 56TEMP1I Temperature detection 1 (at power supply side) (For display and protection) Displays the temperature and overheat protection. 57NCONot use

28、d Output L fi xed 58E2P_SCLI/O To memorize D2 setting 59E2P_SDAI/O To memorize D2 setting 60,61NCONot used Output L fi xed 62B_DET I B voltage over voltage detection (Not Used) Plan: Enters the protection operation when the voltage is higher than a certain value. (Not Used) Software does not have a

29、detection function. Make sure to pull down/up when it is required to remove the external circuit! 63/DC_DETIOutput DC OFFSET voltage detectionL: Enters into the voltage error protection operations. 64USB_DET (Not Used)IUSB detection H: When USB is detected, do not make D2 setup from the -com. No pro

30、cessing is included. MICROCOMPUTERS TERMINAL DESCRIPTION 7 KAC-PS4D/X4R TEST MODE How to enter the test mode and how to clear the test mode How to enter In the backup connection condition (when the battery is being connected), turn ON the P_CON while keep pushing the rotary push key. * Set up SETTIN

31、G SW from the INFORMATION side. How to clear P_CON OFF or reset to clear the mode. * Do not clear the mode if the protection recovers auto- matically. Items in the test mode and test operations INFORMATION display (Display of conditions) In the test mode, the following items can be checked in additi

32、on to the normal INFORMATION display. Each item can be selected with the rotary encoder and the settings can be changed with the push key. OVER HzdB ? DIRG OVER HzdB ? Initial condition OVER HzdB ? . OVER HzdB ? OVER HzdB ? OVER HzdB ? OVER HzdB ? /TWSC OVER HzdB ? TS OVER HzdB ? OVER HzdB ? OVER Hz

33、dB ? Turn Push Turn Turn OVER HzdB ? FFO FFO OVER HzdB ? NO NO Turn OVER HzdB ? OVER HzdB ? OVER HzdB ? 003 .V 721 .F OVER HzdB ? V34 .1 OVER HzdB ? A81 OVER HzdB ? C87 Turn Turn OVER HzdB ? NAF S-LEP Push OVER HzdB ? Push OVER HzdB ? DEL Push OVER HzdB ? W/F OVER HzdB ? REV OVER HzdB ? TLOV OVER Hz

34、dB ? R TRUC OVER HzdB ? PMET OVER HzdB ? OMED . . Additional items shown in the test mode Condition display Items shown in the normal mode Segment check of FL display tube Change the display segment in the following sequence of order. All on ? GRID1 on ? GRID2 on ? GRID3 on ? All of Check of FAN swi

35、tching In the FAN switching mode, it is possible to select to rotate or stop the FAN regardless of the present temperature. L-GOE OVER HzdB ? Push OVER HzdB ? OVER HzdB ? KOC L GNC L C L-M OVER HzdB ? Push Check of LED switching In the LED switching mode, it is possible to select to turn on or off t

36、he LED. Version display It is possible to check the version of the ?-com. C 9 9 9 9 P 9 9 9 9 OVER HzdB ? OVER HzdB ? T 9 9 9 9 D 9 9 9 9 OVER HzdB ? O 9 9 9 9 OVER HzdB ? OVER HzdB ? N 9 9 9 9 S 9 9 9 9 R PRE-OUT setting Set up PRE-OUT output to be CENTER-SW and STEREO. DSP version display Display

37、the firmware version of the DSP. Display the error log. Display the time for P-CON ON. Max: 9999 hours, The time up to one hour is displayed with the step of 10 minutes. “C 50M” Output ON time (The time while the sound is being output from the speaker.) Max: 9999 hours, The time up to one hour is di

38、splayed with the step of 10 minutes. “C 50M” The number of times when the temperature protection is detected Max: Count up to 9999 times. The number of times when DC error protection is detected. Max: Count up to 9999 times. The number of times when over current error protection is detected. Max: Co

39、unt up to 9999 times. The number of times when DSP error is detected. Max: Count up to 9999 times. The number of times when the system error is detected. Max: Count up to 9999 times. Clear the error log and installer memories. Initialize EEPROM. After clearing, display the result of it. 8 KAC-PS4D/X

40、4R CIRCUIT DESCRIPTION ISO ARCA IN ALVRAMPSE to DIF ADC Ach DSP DRIVERPWR FETFILTER FEEDBACK, DPSC, ADCS OVERCURRENT DETECTION SP OUT AL L/R DACRCA OUT L/R +HV REG HV REG LC FILTER FUSE GND BATT14.4V OC DET DRIVER U-PUMP DRIVER FF IC101 Q112 D107 D103D101 D115 Q101 Q103 D105 D117 Q107 Q111 Q109 Q105

41、 D112 D109 Q113 390 R111 R105 4.7 0.1 C129 1 C105 0.1 10K R103 VCC OUTB NC8 OUTA 2 GND 3 INB 4 INA 1 NC1 7 6 5 8 0.1 C103 C101 R101 10K C111 0.47 0.033 TP185 33 C113 120nH R147 39 L103 R145 39 1/2W 1/2W 220u50 R107 TP184 TP180 C109 0.47 C107 1.2K 15uH L101 1.5K R121 47K R137 2K R123 390 R117 10K R12

42、5 1 C119 1W TP172 0.022 R109 47K 47K R138 10K R139 100P C139 0.022 TP171 C121 C123 0.1 3300P R140 C125 R113 +3.3V +HV FD-BL BL +12V +HV +3.3V HV R119 4.7K HVHV +HV +HV +3.3V HV 1W R149 0.027 TH103 22K R153 4700P C117 C115 4700P 1.2K R115 TH101 22K R151 1/2W R93 R127 100P C6382 1/2W 82 100P C65 82 R1

43、28 R95 82 1/2W 1/2W + 12 Flow of PS4D/X4R signal line and power supply controls Block diagram The signal from the pin jack is converted into the differential signal via the isolation amplifi er, variable resistor, and single end. It is converted into the digital signal in the AD converter and it is

44、signal-conditioned in the DSP so that it can be amplifi ed by the PWM digital amplifi er. It is PWM-amplifi ed to the analog signal by the driver and power MOSFET to the level that can be output from the speaker. Main signal amplifi er circuit with PWM Main signal amplifi er circuit with PWM The aud

45、io signal that is DA-converted is converted into the signal for PWM in the DSP. Its level is shifted in the IC101 and it is converted into the PWM signal whose amplitude is +/- B. The “+” side of the amplitude is controlled by Q101 of the PchMOSFET and the “-” side is controlled by Q103 of the NchMO

46、SFET. The signal right after this step is converted into the digital signal in the AD converter and is feed-backed to the DSP. The main signal is output from SP via the low pass filter. In addition, current of the main signal is monitored in the over current detection circuit and when the over curre

47、nt is detected the output level is controlled by the DSP. The signal for pre-out is output to the pin jack via the DA converter used for the pre-out. The 14V of the battery is converted to +/-40V in the SW regulator. The voltage is controlled in the feed-forward and anti-pumping circuits. Over curre

48、nt is detected by R109 and R149. The signal level is lowered in the DSP when the over current is detected. Q107 is used to detect the “+” side of the switching current and Q105 is used to detect the “-” side of the current. 9 KAC-PS4D/X4R EDCBA 1 2 3 4 5 6 7Refer to the schematic diagram for the val

49、ues of resistors and capacitors. IC1 IC2 IC100 PREAMPLIFIER UNIT X08-4350-10 A/2 (J76-0378-12) X08 B/2 13 W29 W5 W48 W6 W47 W3 W1 W2 C21 C23 C22 C24 C100C109 W41 C9 C10 C11 C12 W25 W30 W14 W42 W10 W9 W38 W40 W11 W36 W44 W4 W7 W8 W17 W16 W22 W24 W18 W12 W13 W27 W15 W19 W28 W33 W26 W34 W43 W23 W21 W20 W31 W35 W39 W37 (A/B/PRE) (SET/INFO) (B:ST/MONO) B-ch A-ch 1 2 41 42 1 3 PUSH ENCODER ROTARY (AB/A) (A:ST/MONO) 129 230 INPUT SENSITIVITY 12 1 C118 W45 C117 R29 W46 R202 R108 R33 R34 C104 R106 C101 C102 C105 C106 C107