Kenwood VR 3080 - Dolby Digital Receiver Service Manual

Audio video surround receiver
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AUDIO VIDEO SURROUND RECEIVER
KRF-V7772D
VR-3080
SERVICE MANUAL
Indicator
Knob
(B12-0326-04)
(K29-6855-03)
POWER
ON/STANDBY
Panel escutcheon
(B01-0533-21)
Knob
(K29-6858-12)
Lock terminal board
(E70-0052-05)
Phono jack
(E63-1084-05)
PRE OUT
FRONT
SURROUND
AM
MD/TAPE1
REC
PHONO CD1
OUT
GND
FM
75
ANTENNA
Phono jack
(E63-0141-15)x2
Indicator
(B12-0333-04)
CLIP INDICATOR
DOLBY DIGITAL
A
SPEAKERS
B
PHONES
Indicator
Front glass
(B12-0331-04)
(B10-2418-03)
Phone jack
Knob
(E11-0271-05)
(K29-6858-12)
Cylindrical receptacle
Optical receiving module
(E56-0011-05)
(W02-1181-05)
Phono jack
(E63-0162-05)
S VIDEO
CENTER
VIDEO1
VIDEO2
VIDEO3
VIDEO4
MONITOR
REC
PLAY
PLAY
PLAY
PLAY
OUT
OUT
IN
IN
IN
IN
SUBWOOFER
VIDEO
AUDIO
CD2/TAPE2
MONITOR
VIDEO1
VIDEO2
VIDEO3
VIDEO4
PLAY
REC
PLAY
REC
PLAY
PLAY
PLAY
PLAY
IN
OUT
IN
OUT
IN
IN
IN
IN
Phono jack
(E63-0139-15)
© 1999-3/B51-5511-00 (K/K) 1841
Front glass
Knob
(B10-2451-03)
(K29-6855-03)
DTS
VOLUME
INPUT SELECTOR
MUTE
DISPLAY MODE
DOWN
UP
S VIDEO
Cylindrical receptacle
(E56-0012-05)
Knob
(K29-6852-04)
Miniature Phone jack
(E11-0291-05)
Miniature phone jack
(E11-0360-05)
Phono jack
(E63-1028-05)
DIGITAL IN
IR RECEIVER
IR REPEATER
IR OUT
IN
LCD
OUT
VIDEO2
VIDEO3 VIDEO4
CD1
DC12V 15mA
REMOTE
SL16
TEXT
OPTICAL OPTICAL COAXIALCOAXIAL
SURROUND SPEAKERS
FRONT SPEAKERS
(6-16 )
(6-16 )
Screw terminal board
Screw terminal board
(E70-0095-05)
(E70-0096-05)
Miniature Phone jack
(E11-0389-05)
*Refer to parts list on page37~.
Panel *
(A60-)
CD2/TAPE2
MONITOR
V AV AUX L-AUDIO-R
Foot
(J02-1405-03)
Phono jack
(E63-1030-05)
Miniature Phone jack
(E11-0293-05)
Slide switch
Power cord bushing
(S31-2132-05)
(J42-0083-05)
SYSTEM
CONTROL
SL16 XS8
CENTER
SPEAKER
SWITCHED
(6-16 )
TOTAL 100W MAX.
AC power cord*
(E30-)
AC outlet *
(E03-)

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  Summary of Contents for Kenwood VR 3080 - Dolby Digital Receiver

  • Page 1 AUDIO VIDEO SURROUND RECEIVER KRF-V7772D VR-3080 SERVICE MANUAL © 1999-3/B51-5511-00 (K/K) 1841 Indicator Front glass Knob Knob Indicator Panel * (B12-0326-04) (K29-6855-03) (B12-0333-04) (B10-2451-03) (K29-6855-03) (A60-) CLIP INDICATOR DOLBY DIGITAL POWER VOLUME INPUT SELECTOR ON/STANDBY SPEAKERS MUTE DISPLAY MODE DOWN CD2/TAPE2 PHONES MONITOR...
  • Page 2: Table Of Contents

    KRF-V7772D/VR-3080 CONTENTS / ACCESSORIES Contents CONTENTS/ACCESSORIES/CAUTIONS....2 WIRING DIAGRAM ............13 CONTROLS ..............3 PC BOARD ..............14 DISASSEMBLY FOR REPAIR........4 SCHEMATIC DIAGRAM ..........19 BLOCK DIAGRAM ............5 EXPLODED VIEW .............36 CIRCUIT DESCRIPTION ..........6 PARTS LIST...............37 ADJUSTMENT ............12 SPECIFICATIONS .............49 Accessories Batteries AM Loop Antenna (T90-0833-05) Antenna PowerPad Remote...
  • Page 3: Krf-V7772D/Vr

    KRF-V7772D/VR-3080 CONTROLS Except for USA and Canada CLIP INDICATOR DOLBY DIGITAL POWER VOLUME ON/STANDBY INPUT SELECTOR POWER ON/STANDBY SPEAKERS MUTE DISPLAY MODE DOWN CD2/TAPE2 PHONES MONITOR S VIDEO V AV AUX L-AUDIO-R Power On/Standby button Volume control knob Power indicator light 10.
  • Page 4: Disassembly For Repair

    KRF-V7772D/VR-3080 DISASSEMBLY FOR REPAIR HOOK [Check the audio PCB(X09)] 1. Remove the 9 screws (1,2,3). 2. Remove the 4 hooks(4,5) and remove the audio PCB(X09),then stand the set with left side downward. 3. Connect between the chassis of the set and the rear panel with an alligator clip lead wire X09- (6).
  • Page 5: Block Diagram

    (SIGNAL STAGE) (u-COM STAGE) IC71 (X09) (X08) (X08) IC91 (ANALOG) LEDx7 PHONO L2,R2 PHONO 2.5mV/ MI-COM 4.7K LINE BUFFER BUFFER (X05) REMOTE L1,R1 L8,R8 INPUT ATT TUNER 8 CONTROL TUNER IC15 AUDIO SEL. 3 L7,R7 OTHER L5,R5 DPS 10 IR REPEATER TONE OFF Q1,2 Q3,4...
  • Page 6: Circuit Description

    KRF-V7772D/VR-3080 CIRCUIT DESCRIPTION 1. The back up item and initialization condition 1-1 Back up • FRONT SP. : LARGE • POWER ON/OFF : OFF • CENTER SP. : NORMAL • VOLUME LEVEL : -66dB • SURROUND SP. : NORMAL/WIRED • AUDIO INPUT • SELECTOR : TUNER •...
  • Page 7: Circuit Description

    KRF-V7772D/VR-3080 CIRCUIT DESCRIPTION Push key I N P U T SELECTOR S P A S P B MUTE DISPLAY MODE P. CALL P. CALL AUTO/STEREO MANUAL/MONO TUNER STEREO DOWN (DOLBY DIGITAL LED : OFF TONE (TUNED) STEREO +10 (light on) OFF (light off) MD/TAPE1 STEREO...
  • Page 8 KRF-V7772D/VR-3080 CIRCUIT DESCRIPTION 4-2 Pin description Pin No. Name I/O Connect Description REM_D0-D7 P.D. LCD REMOTE DATA OUT-7 10-13 TSW3-0 TUNER DESTINATION SWITCH3-0 ENC_A VOLUME ENCODER INPUT A ENC_B VOLUME ENCODER INPUT B P.D. Not used T_MUTE P.U. TUNER MUTE PLL_CLK P.D.
  • Page 9 KRF-V7772D/VR-3080 CIRCUIT DESCRIPTION Pin No. Name I/O Connect Description DSP_SO P.D. DSP(YSS912), CODEC(CS4226)DATA OUT DSP_SCK P.D. DSP(YSS912), CODEC(CS4226)CLOCK TEXT_RX P.D. CD TEXT UART COMMUNICATION DATA IN TEXT_TX P.D. CD TEXT UART COMMUNICATION DATA OUT DSP_IC P.D. DSP(YSS912) INITIAL CLEAR FL_RST P.D.
  • Page 10 KRF-V7772D/VR-3080 CIRCUIT DESCRIPTION 4-3 Circuit control (a) Selector IC (1:H , 0:L) NJU7313AL(X09:IC4), NJU7312AL (X09:IC5) NJU7313AL NJU7312AL *3 PIN No.(Lch) PIN No.(Rch) SW No. (Lch) SW No. (Rch) TUNER MD/ T A PE1 VIDEO1 VIDEO2 VIDEO3 VIDEO4 A V AUX PHONO CD2 /T A PE2 o f f CD2 /T A PE2 on...
  • Page 11 KRF-V7772D/VR-3080 CIRCUIT DESCRIPTION (d) CODEC:CS4226(X08:IC3) (PIN No.: MAIN UCOM PIN No.) FREQ0 ( 55 PIN ) /FREQ1 ( 5 4 PIN ) 3 2 kHz 4 4 .1 kHz 4 8 kHz Reserved FREQ1 FREQ0 A UDIO ( 58 PIN ) C a n n el S t a tus Bi t0 A U DI O C ODEC _ AC 3 (4 8 PIN )
  • Page 12: Adjustment

    KRF-V7772D/VR-3080 ADJUSTMENT I N P U T OUTPUT RECEIVER ALIGNMENT I T E M ALIGN FOR F I G . N o . S E T T I N G S S E T T I N G S S E T T I N G S P O I N T S FM SECTION : SELECTOR : FM...
  • Page 13: Wiring Diagram

    TUNER UNIT K,Y,M.X 24.5V/6 20V/4 (X05-503X-XX) VR-3080 (X05-5030-10) A SP S VIDEO DESTINATION UNIT No. COUNTRY ABB. MONITOR U.S.A. (X08- ) 0-10 CANADA (C/10) FRONT SP. FM 75 KRF-V7772D (X05-503X-XX) Lch 1 VIDEO1 DESTINATION UNIT No. VIDEO 2 COUNTRY ABB. AM ANT PLAY IN PLAY...
  • Page 14: Pc Board

    PC BOARD (Component side view) TUNER UNIT X05-5030-10 (J70-1284-01) TUNED ANTENNA Refer to the schematic diagram for the value of resistors and capacitors.
  • Page 15 PC BOARD (Component side view) PRE OUT VIDEO1 DIGITAL IN VIDEO4 VIDEO3 VIDEO2 SURROUND UNIT CENTER PLAY PLAY PLAY PLAY MONITOR VIDEO3 VIDEO2 VIDEO4 WOOFER SURROUND FRONT SL16 SYSTEM SL16 CONTROL TEXT X08-2970-10 A/10 (J70-1297-01) X08 I/10 C391 C392 C291 C292 C191 C192...
  • Page 16 PC BOARD (Component side view) X09 C/5 X09 D/5 120V AUDIO UNIT X09-6270-10 A/5 (J70-1293-01) Q107 Q101 Q103 Q109 Q110 Q102 Q104 Q106 Q105 LSch RSch Q108 CN23 CN21 CN22 CN24 CN25 R236 R237 R238 R137 R337 R138 W130 IDLE.ADJ. IDLE.ADJ.
  • Page 17 TUNER UNIT (X05-503X-XX) LA1837 : DA204U or : LC72131 MA143A or MC13028AM 1SS302 D3,6 : RD8.2ES(B2) or Q1,3,4,8,9 : 2SC4177(L5,L6) or MTZJ8.2(B) or FM TUNING 2SC4116(Y,GR) RD5.1ES(B2) or LEVEL Q2,12,14,15 : 2SA1611(M5,M6) or MTZJ5.1(B) or 2SA1586(Y,GR) RD2.7ES(B2) or 0.01 Q10,11 : 2SD1757K MTZJ2.7(B) or D7,8,13,16...
  • Page 18 SURROUND UNIT (X08-297X-XX) (A/10) +17V +17V +17V 16.9V C107 3300P FLch R101 C103 R103 R107 3.9K 2.2u50 4.7K R113 DIGITAL RESET 3.3K DATA IC11 DIGITAL(LS,RS) 4.4V DETECTOR (1/2) R109 (6/6) 14 8 4.2V 1.8K 4700P DIGITAL(C,SW) 21KHz LPF DIGITAL(FL,FR) 2.4V VIDEO2 AOUT2(R) R110...
  • Page 19: Schematic Diagram

    (X08-297X-XX) (A/10) +17V +17V +17V +17V +13.7V R743 +5.8V +5.8V R755 R722 47K R723 47K D855 R853 330 R724 47K R855 100K R725 47K R856 100K R726 47K D856 R854 330 SYSTEM CONTROL R727 47K R851 100K BUSY R744 3.3K R728 47K DATA R852 100K...
  • Page 20 (X08- ) (I/10) (X08-297X-XX) (A/10) 17.1V +17V +17V +17V R466 D452 +17V 1/4W Q462 16.9V IC1(1/2) -17.1V C457 10u50 100u10 4.7K -16.5V -16.5V Q3,4 R15 100 3.8V R469 -6dB 3.3K Q1,2 BUFFER -3dB +17V -16.5V R467 R125 C121 R131 C123 0.056 0.047 IC12,13...
  • Page 21 X09-A/5 2SA1123 2SC2878 -CN6 2SA1534A 2SC3940A 2SA992 2SD863 2SC1845 2SC2003 (X08-297X-XX) (A/10) VR-3080 (X08-2970-10) 2SC2631 DESTINATION R701,703,705, R702,704, UNIT No. C190 J61,62 COUNTRY ABB. 755,773 706,772 16.1V +17V U.S.A. Q460 Q452 Q454 Q456 Q458 -6dB -3dB 0-10 E63-1028-05 E63-1084-05 E63-0162-05 20db SEL SURROUND CANADA...
  • Page 22 MAIN UNIT (X09-62XX-XX) (A/5) 16.9V +17V R109 Q101-110 56.6V R119 220 FINAL TR. +56V (1/2) PHNO EQ AMP 0.6V 2.2K 10u50 1/4W R121 R147 Lch 1 C15+ 220 1/4W 42.7V 42.1V 1.1V Q101 100 1/4W R143 4.7u35 1.2V 55.2V C117 Q11-15 3.3K R133...
  • Page 23 (X09-62XX-XX) (A/5) (X08-2970-10) (B/10) VR-3080 (X09-6270-10) R157 560 2W DESTINATION W214, WH11, WH7, CN11, UNIT No. J1,2 J11-13 COUNTRY ABB. R158 560 2W R92 2.2 U.S.A. 3.15A R91 2.2 0-10 E03-0148-05 L07-2320-05 CANADA 125V 125V C132 0.1 DESTINATION C131,132, C133-136,196, C157, R117,118, R123-126,...
  • Page 24 FL DISPLAY UNIT (X08-297X-XX) (D/10) MUTE TUNED (X08-297X-XX ) (C/10) -22.3V Q661 -19.8V S1 SIGNAL -22.3V R667 -19.7V -19.6V -13.4V R668 C653 Q641 C693 C692 C691 C690 4.9V R666 1M R655 0.01 1000P 1000P 1000P 1000P S VIDEO -32.2V C658 100P R698 R697 R696...
  • Page 25 CAUTION: For continued safety, replace safety critical components only (X08-297X-XX) (D/10) with manufacturer's recommended parts (refer to parts list). indicates safety critical components. For continued protection against risk of fire, replace only with same type and rating fuse(s). To reduce the risk of IC65,66 : BA7626F electric shock, leakage-current or resistance measurements shall be...
  • Page 26 DIGITAL IN S VIDEO SL 16 SYSTEM PRE OUT VIDEO PLAY IN OPTICAL COAXIAL IR OUT IR IN IR OUT TEXT CONTROL J 2 J61 J62 A 1 J84 J85 J82 S 1 J81 SL18 XS8 AC 110- AC220- 120V~ 240V~ X09- (B/5)
  • Page 27 New Parts New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 28 New Parts New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 29 New Parts New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 30 New Parts New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 31 New Parts New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 32 New Parts New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 33 New Parts New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 34 New Parts New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 35 New Parts New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. & Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 36: Exploded View

    New Parts New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 37: Parts List

    New Parts New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. ¡ ™ Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 38 New Parts New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. £ ¢ Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 39: Specifications

    KRF-V7772D/VR-3080 SPECIFICATIONS KRF-V7772D FM Tuner Section Audio Section Tuning Frequency Range ....... 87.5MHz~108MHz Rated Output Power during stereo operation Usable Sensitivity (Mono) For US Military: ......1.6 V (75 ) / 15.2dBf (75kHz dev., sinad 30dB) 100 watts per channel minimum RMS, both channels driven, at 6 from 20Hz to 20kHz with no more than 0.05% 50dB Quieting Sensitivity...
  • Page 40 14-6,Dogenzaka 1-chome, Shibuya-ku, Tokyo, 150-8501 Japan ation under differing local conditions. This manual is based on Gener- KENWOOD SERVICE CORPORATION al market(M) standard, and provides information on regional circuit P.O BOX 22745, 2201 East Dominguez St., Long Beach, CA 90801-5745, U.S.A.

This manual is also suitable for:

Krf-v7772dVr-3080