Kenwood-KRFV7771D-avr-sm2 电路图 维修手册.pdf

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1、(E,T type) AUDIO VIDEO SURROUND RECEIVER KRF-V7771D/V7771DE SERVICE MANUAL 1999-1/B51-5498-00 (K/K) 1612 PHONES INPUT SELECTOR VOLUME MPEGCinema Re-EQDOLBY DIGITALCLIP INDICATOR POWER ON/STANDBY A B SPEAKERS MUTE DOWNUP DISPLAY MODE S VIDEOVL-AUDIO-R CD2 / TAPE2 MONITOR ON OFF AV AUX SYSTEM CONTROL

2、FRONT SPEAKERS (4-16 ) CENTER SPEAKER (4-16 ) SURROUND SPEAKERS DIGITAL IN VIDEO 2 COAXIAL VIDEO 3 COAXIAL VIDEO 4 OPTICAL CD 1 OPTICAL SL 16XS 8 ( SL 16 )( XS 8 ) (4-16 ) SWITCHED TOTAL 90W MAX. LR A LRL C R B SL 16 TEXT LR R ANTENNA AM -FM 75 GND CD1 PHONO MD/ TAPE 1 REC OUT PLAY IN REC OUT PLAY I

3、N PLAY IN PLAY IN CD2 / TAPE 2 MONITOR MONITOR OUT FRONT FRONT SURROUND SURROUND CENTER CENTER SUB WOOFER SUBWOOFER L LR LR VIDEOS VIDEO PRE OUTVIDEO4 6CH. INPUT AUDIO VIDEO 3 VIDEO 4 PLAY IN VIDEO 2 VIDEO 1 LRAUDIO PLAY IN REC OUT + - 6CH 2CH VIDEO 4 INPUT Knob (K27-2248-04) AC power cord* (E30-) A

4、C outlet* (E03-) Phono jack (E63-1008-05) Phono jack (E63-1028-05) Lock terminal board (E70-0052-05) Miniature Phone jack (E11-0374-05) Phono jack (E63-1030-05) Panel (A60-1580-12) Knob (K29-6858-12) Knob (K29-6855-03) Led holder (J19-5876-04) Knob (K29-6855-03) Knob (K29-6852-04) Phono jack (E63-02

5、00-05) Phono jack (E63-0136-15)x2 Phono jack (E63-0139-15)x2 Slide switch (S62-0034-05) Front glass (B10-2418-03) Indicator (B12-0326-04) Front glass (B10-3455-03) Screw terminal board (E70-0095-05) Screw terminal board (E70-0096-05) *Refer to parts list on page52. This manual is available for repai

6、r in the Europe and England markets. Please refer to the original manual (B51-5426-00) if need the information in the USA and Canada and other markets. Cylindrical receptacle (E56-0011-05)x2 Phono jack (E63-0162-05)x2 Power cord bushing (J42-0083-05) Miniature phone jack (E11-0360-05) Phono jack (E6

7、3-1077-05) Cylindrical receptacle (E56-0012-05) Phone jack (E11-0271-05) Indicator (B12-0333-04) Optical receiving module (W02-1181-05) RadioFans.CN 收音机爱 好者资料库 KRF-V7771D/V7771DE 2 CONTENTS / ACCESSORIES / CAUTIONS CONTENTS / ACCESSORIES / CAUTIONS.2 CONTROLS .3 DISASSEMBLY FOR REPAIR.5 BLOCK DIAGRA

8、M .6 CIRCUIT DESCRIPTION.7 ADJUSTMENT. 13 WIRING DIAGRAM.14 PC BOARD .15 SCHEMATIC DIAGRAM .23 EXPLODED VIEW .51 PARTS LIST.52 SPECIFICATIONS .67 Contents FM (T90-0836-05) indoor antenna (1) Remote (A70-1269-05) (RC-R0807) Battery cover(A09-1115-08) control unit (1) Loop antenna stand (1) Batteries(

9、R6/AA) (4)AM loop antenna (1) (T90-0833-05) (J19-3645-05) How to reset the microcomputer The microcomputer may malfunction (impossibility of operation, erroneous display, etc.) when the power cord is unplugged and plugged in again while the unit is in ON mode or due to other external causes. In this

10、 case, execute the procedure on the right to reset the microcomputer and return the unit to the normal condi- tion. ?Resetting the microcomputer clears the memory you entered and returns it to the initial condition when the unit left the factory. 1With the power cord plugged in, turn the POWER key t

11、o OFF. 2While holding down the (ON/STANDBY) key, press the POWER key. Please note that the following items will be deleted from this units memory if the power cord is disconnected from the AC outlet for approximately three days. Memory backup function ?The frequency setting is cleared and 87.5 MHz i

12、s selected. ?The preset station memory is cleared. ?The surround setting is cleared and reset to the initial condition. ?The input selection is cleared and the “Tuner” input is selected. ?The volume setting is cleared and the volume is set to “-66 dB”. ?The receiving band setting is cleared and the

13、“FM” band is selected. Accessories Cautions RadioFans.CN 收音机爱 好者资料库 KRF-V7771D/V7771DE 3 CONTROLS PHONES INPUT SELECTOR VOLUME MPEGCinema Re-EQDOLBY DIGITALCLIP INDICATOR POWER ON/STANDBY A B SPEAKERS MUTE DOWNUP DISPLAY MODE S VIDEOVL-AUDIO-R CD2 / TAPE2 MONITOR ON OFF AV AUX 2 37546 #%$&9801 ST.ST

14、. TUNED MUTE TUNED MUTE ! Standby mode 1POWER key Press to switch the main power ON and OFF. 2ON/STANDBY ()key Press to switch the power mode between STANDBY and ON. 3Standby indicator Lights in standby mode. 4Remote sensor Receives signals transmitted from the re- mote control unit. 5PHONES jack Us

15、e for listening to audio through headphones. 6SPEAKERS keys Press each key to switch the SPEAKERS A or SPEAKERS B ON and OFF. 7Indicators CLIP INDICATOR : Lights when the input is clipped during analog to digital signal conversion. DOLBY DIGITAL : Lights when Dolby Digital is activated. Stereo indic

16、ator MUTE indicator TUNED indicator Multi-mode display While the standby indicator of the unit is lit, a small amount of current is flowing into the units internal circuitry to back up the memory. This condition is referred to as the standby mode of the unit. While the unit is in the standby mode, i

17、t can be turned ON from the remote control unit. Display MPEG : Lights when the MPEG is activated. Cinema Re-EQ : Lights when the Re-EQ is activated. 8MUTE key Press to mute the audio temporarily. 9Remote transmitter Sends signals to the remote control unit. 0Communication indicator Lights when sign

18、al is input from or output to the remote control unit. !VOLUME control knob Rotate to adjust the volume. S VIDEO input jack (AV AUX) Connect the S VIDEO output jack of an AV component. #VIDEO input jack (AV AUX) Connect the composite video output (RCA) jack of an AV component. $AUDIO (L, R) input ja

19、cks (AV AUX) Connect the audio output (RCA) jacks of an AV component. %CD2/TAPE2 MONITOR indicator Lights when the CD2/Tape2 (Monitor) input is used. DISPLAY MODE key Press to switch the display on the receiver. Press for more than 2 seconds to switch the recording mode. &INPUT SELECTOR key Press to

20、 switch the input as shown below. TUNER CD1 MD/Tape1 VIDEO1 VIDEO2 VIDEO3 VIDEO4 AV AUX PHONO RadioFans.CN 收音机爱 好者资料库 KRF-V7771D/V7771DE 4 CONTROLS Perform “Model Type Setup” of the remote control before using it. The following menu display ap- pears after the batteries are loaded for the first time

21、. ON/STANDBY MUTE VOLUME ENTER Setup Surround SP Level SP Distance SP Selection TunerCD1 Video2Video3Video4Video1TV1 Phono TV2 CD2 MD/ Tape1 CD2/ Tape2 Input Digital Input Analog AV AUX Macro Remote Mode Main Menu CONFIRM 1 2 345 6 7 8 9 0 NoteNoteNote 1Segment screen The fixed icons are displayed i

22、n this area. ?Main Menu icon : Select to display the Main Menu screen. ?Phono icon ?CD 1 icon ?Tuner icon ?MD/Tape 1 icon ?CD 2/Tape 2 icon ?Video 1 icon ?Video 2 icon ?Video 3 icon ?Video 4 icon ?AV AUX icon ?TV 1 icon ?TV 2 icon ?Macro icon : Select to control macro operation. ?Input Digital icon

23、: Select to play a digital input. ?Input Analog icon : Select to play an analog input. ?Remote Mode icon : Select to switch the remote control operation mode without changing the selected input. Select to switch input and control the se- lected input. ( Phono and AV AUX : Input selection only ) Sele

24、ct to control TV. 2Menu screen Control key icons and control levels are displayed in this area. 3Communication status display Shows the communication status. 4Joy stick This key is used to select an icon. This key can be controlled in 4 directions. 5ENTER key Press to enter the selection of an icon.

25、 6VOLUME (up, down) key Press to control the volume. 7CONFIRM key Press to confirm the currently selected items. 8MUTE key Press to mute the audio temporarily. 9(ON/STANDBY) key Press to turn the receiver and the components connected to it through system cords between ON and STANDBY modes. 0Return (

26、 )icon Select to return to the previous menu screen. Model Type Setup Model 2 Model 1 KRF-V7771D/V7771DE 5 DISASSEMBLY FOR REPAIR 6 6 3 4 4 9 9 3 3 2 11 12 1 4 3 5x2 9x5 8x2 3x2 7 13 13 13 14 14 15 10 1 2 2 2 1 x3 2x3 2 2 x2 x5 2x2 2 3 3 3 3 1 3 x29 Remove the bottom plate. Make use of the changing

27、final transistor etc. 1. Remove the 19 screws (1, 2) and PCB support, then remove the bottom plate. Check the vertical PCB 1. (Exist bottom plate) Remove the hook of rear panel(1). 2. Remove the 29(Exist bottom plate: 34) screws(2), then remove the rear panel. 3. Connect the GND of the phono termina

28、l, the GND of antenna shield board,the GND of coax., the GND of system control shield board, the GND of SP terminal shield board and the chassis with 5 wires connected alli- gator chips(3). Remove the escutcheon (operation panel) 1. Remove the knob(1), the nut (2), the 11 screws(3, 4, 5) and 2 hooks

29、 (6), then remove the front panel assy. 2. Remove the lead wire(7), the 2 screws(8 : except K,P type) and 7 screws(9) then remove the PCB. 3. Remove the under front glass(0, -), then remove the front panel(=) from the sub panel. 4. Remove the 2 under escutcheon sides() by screw driver and the 2 hook

30、s(!) then remove the escutcheon(). Fig. 3 Fig. 1 Fig. 2 VIDEO 1 AV AUX (FRONT) VIDEO 4 VIDEO 3 VIDEO 2 VIDEO 1 COMP VIDEO PLAY COMP REC VIDEO Q52 SN761200N IC51 IC52(2/2) OUT Q55 (OSD) 1Vp-p/75 (VISUAL) VIDEO 1 VIDEO 2 VIDEO 3 VIDEO 4 (FRONT) AV AUX REC PLAY (S1-VIDEO) 1Vp-p/75 MONITOR OUT Q15 Q31 Q

31、16 Q30 Q12 VIDEO 1 Q14 SN761200Nx2 IC11,12 CD1 VIDEO1 VIDEO2 VIDEO3 VIDEO4 MD/TAPE1 VIDEO1 VIDEO2 TAPE2 VIDEO3 VIDEO2 VIDEO4 AVR IC31 +5.6V GND D301-304 FINAL TR. FINAL TR. GND PRE DRIVE GND PRE DRIVE D251 D252 Q154 RELAY DRIVER -17V GND +17V D81 Q84 AVR Q83 AVR Q86 AVR Q85 AVR To VIDEO To VIDEO +5.

32、0V GND IC84 AVR D88 Q311 AVR -35V FIL FIL STROKE SW K6 Q301 RELAY DRIVER AC OUTLET D312 K5 T1 D86 IC83 AVR IC82 AVR AVR IC6,33-35 +30V GND D82 CD1 L8 R7 R8 L7 L6,L7 L3,L5 L2,L4 L1,R8 L1 MONITOR L4 MD/TAPE1 L2 R1,R7 R2,R4 R3,R5 L8,R6 R2 R4 R1 R3 L3 IC3 BUFFER REC OUT L7,R7 L5,R5L3,R3 R5 IN L4,R4 LINE

33、 BUFFER IC21(1/2) TUNER 2.5mV/ PHONO IC27 IC1(2/2), IC2(2/2) IC4 IC1(1/2), IC2(1/2) IC23 IC1 EQ (ANALOG) L2,R2 L1,R1 INPUT ATT IC21(2/2) IC49 BUFFER BUFFER DOLBY DIG. PROLOGIC CONVERTER FORMAT 5V CS4226 DIR AD/DA IC25 IC30 IC31 IC28 21kHz LPF 21kHz LPF 21kHz LPF 21kHz LPF IC50 IC52(2/2) IC54 IC52(1/

34、2) SUB CENTER LS,RS, FL,FR INV IC49 CONFIG-2 IC47,48 LOW BOOST DIRECT L2,R2 L3,R3 L1,R1 L6,R6 TONE IC43 IC44 L4,R4 L8,R8 L7,R7 VOLUME VOLUME VOLUME VOLUME IC21 IC25(1/2) IC23 IC25(2/2) IC51 (1/2) IC53 IC52 (2/2) IC53 Q10 Q9 -20dB Q5,6 Q1,2 ATT -20dB ATT -20dB ATT -20dB ATT (1/2) IC26 (2/2) IC24 IC26

35、 IC22 AMP BUFFER Q12 Q7,8 Q11 Q3,4 MUTE MUTE MUTE MUTE -20dB ATT A-MUTE SW-MUTE MUTE Q35,47 45,46 MUTE Q36,48 MUTE 43,44 MUTE K3 K4 K1 (X25)(X07) 29dB POWER AMPLIFIER (X25)(X07) 29dB POWER (X25)(X07) 29dB POWER K2 BUFFER IC31(1/2) IC30 BUFFER IC31(2/2) BUFFER RELAY A RELAY CS RELAY B A-MUTE S-MUTE S

36、W-MUTE FRONT SW SL,SR C L,R FRONT B SL,SR C PHONES L,R FRONT A SPEAKERS PRE OUT PRE OUT 1.0V/500 LED PEAK LEVEL LED (X25) IC61 FL DRIVER (X25) ED1 FL KEY MATRIX (X25) A1 REMOTE SENSOR SUB u-COM DATA-OUT MAIN u-COM (X08) IC3 (X08) IC1 RDS u-COM REMOTE (X08) IC4 (X11) D21-24 IR LED REMOTE OUT SIRIAL/

37、PARALEL (X07) Q211-215 FAN DRIVERFAN 7 (X08) IC5 PROTECTION TONE CONT. VIDEO SYNC WIDE V-MUTE DIGITAL INPUT SEL. VIDEO SEL. FAN RELAY 8 4 4 3 TUNER9 2 5(A,B,CS,TR,POWER) TUNER DAC/ADC10 DATA-IN SL16 TEXT (X08) J1 (X08) J2 SYSTEM CONTROL (X08) J3 SYSTEM CONTROL 200mV/47K 200mV/220 IN OUT OTHER TC9164

38、AF-2 TC9163AF-2 MAX:1.0Vrms IC42 TC9163AF-1 TXRX SDATASBUSY CONFIG D/A,A/D Re-EQ FAN ON/OFF FAN FRST/SLOW AMPLIFIER AMPLIFIER DIGITAL 5ch SP. OUTPUT KRF-V7771D(E,T) IC53 (X25) S1 CD2/TAPE2 PLAY IN SW LS.RS C 6ch INPUT VIDEO4 AV AUX IN (FRONT) REC OUT COAXIAL IN OPTICAL IN IC26 (AC3) MPEG 3.3V COMFIG

39、. Re-EQ IC22 ROM IC29 1M DRAM IC21 Q49,50 MUTE Q48 MUTE Q47 MUTE Q45,46 MUTE IC51 (2/2) IC55 (1/2) IC53 IC53 L8 L3,R1 L6 L1,R3 L5 L7 (1/2) IC19 IC20 IC19 (2/2) L,R IC29 BUFFER DIR +3.3V IC37 AVR 4.7K PHONO Q31,32, 20.0V/4 A2 A1 L5 IC18 Q33,34, MONITOR SUB MUTE V-MUTE Y C C Y Y C C Y C Y V-MUTE Y C C

40、 Y + + + SE-RLY + + + POWER-RLY To u-COM To POWER ANALOG To SUB-uCOM DSP TUNER MPEG ROM DOLBY DIG. To FAN + STB CLK DATA DATA CLK CDOUT CCLK CS CDIN .FREQ1.ERR .AC-3.FREQO .PDN .AUDIO SCK/SCL RESET SS MOSGPI02 GPI00 HREQ MISO/SDA HREQ MOS RESET GPI00 HREQ MISO/SDA SCK/SCL SS 7 51 5 6 DATA OUT CLK DA

41、TA IN .RESET .STB 13 6 5 MISO/SDA SREQ MDT MREQ MCK SDT RESET KRF-V7771D(E,T) (X25) (X11) (X11) (X08) (X25) (X25) (X07) (X25) (X25) (X07) KRF-V7771DE(E2) (X08-) (X08) (SIGNAL STAGE)(u-COM STAGE) KRF-V7771D/V7771DE 6 BLOCK DIAGRAM 7 KRF-V7771D/V7771DE CIRCUIT DESCRIPTION (0 : Pull down, 1 : Pull up)

42、TYPEBAND Reception frequency Channel IF PLL standard Diode sw space frequencyDSW3DSW2DSW1DSW0 K1 FM87.5MHz108.0MHz100kHz+10.7MHz25kHz 0000 1700 AM530kHz1700kHz10kHz+450kHz10kHz K2 FM87.5MHz108.0MHz100kHz+10.7MHz25kHz 0001 1610 AM530kHz1610kHz10kHz+450kHz10kHz K4 FM87.5MHz108.0MHz100kHz+10.7MHz25kHz

43、1010 1700 RBDS AM530kHz1700kHz10kHz+450kHz10kHz E1 FM87.5MHz108.0MHz50kHz+10.7MHz25kHz 0011 AM531kHz1602kHz9kHz+450kHz9kHz E3 FM87.5MHz108.0MHz50kHz+10.7MHz25kHz RDSAM531kHz1602kHz9kHz+450kHz9kHz 0101 FM L65.0MHz74.0MHz10kHz+10.7MHz5kHz Q1 FM H87.5MHz108.0MHz50kHz+10.7MHz5kHz 1011 RDS AM531kHz1602kH

44、z9kHz+450kHz9kHz M K2/E1 is switched with only the setting of DSW1 (X11 : S601). 00X1 (DSW1 = 0 : K2 type, 1 : E1 type) 77767574 1. The back up item and initialization condition 1-1 Back up POWER ON/OFF: OFF VOLUME LEVEL: -66dB AUDIO INPUT SELECTOR: TUNER VIDEO INPUT SELECTOR: VIDEO1 SPEAKER A: ON S

45、PEAKER B: OFF CD2/TAPE2 MONITOR: TAPE2 OFF TONE: OFF LOUDNESS: OFF DISPLAY MODE: DEVICE+DGTL/ANLG RDS DISPLAY MODE: FREQUENCY DIMMER: DIMMER 1 (LIGHTEST) SURROUND MODE: STEREO Re-EQ: OFF DSP MODE: ARENA WALL TYPE: Med EFFECT LEVEL: 3 MIDNIGHT MODE: OFF DISTANCE: FL/FR : 10ft (3m) : C : 10ft (3m) : R

46、S/LS : 5ft (1.5m) : SW : 10ft (3m) FRONT SP.: LARGE CENTER SP.: NORMAL SURROUND SP.: NORMAL/WIRED SUB WOOFER: ON SW Re-Mix: OFF INPUT LEVEL: 0dB CH. LEVEL: 0dB BASS PEAK LEVEL: OFF TONE BASS: 0dB TONE TREBLE: 0dB TUNING MODE: AUTO PRESET MEMORY: TEST MEMORY FREQUENCY (Same value with KR-V999D/1090VR

47、) LAST BAND: FM FM LAST FREQUENCY: 87.5MHz AM LAST FREQUENCY: 531kHz (CH. SP 9kHz) : 530kHz (CH. SP 10kHz) LAST P. ch: - -ch PTY SELECT MODE: OFF PTY SEARCH MODE: OFF TP SEARCH MODE: OFF RDS DISPLAY MODE: FREQUENCY MODE 1-2 The initial setting While pressing POWER key, plug the AC power cord into an AC outlet (K,P type) or turn on the AC POWER switch. 2. Condition by the destination or model 3. TEST MODE setting method While pressing INPUT SELECTOR key, plug the AC power cord into an AC outlet (K, P type) or tu