Kenwood KRF-V7772D Service Manual
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Kenwood KRF-V7772D Service Manual

Kenwood KRF-V7772D Service Manual

Audio video surround receiver
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AUDIO VIDEO SURROUND RECEIVER
KRF-V7772D
QQ
3 7 63 1515 0
VR-3080

SERVICE MANUAL

Indicator
(B12-0326-04)
POWER
ON/STANDBY
Panel escutcheon
TE
L 13942296513
(B01-0533-21)
Knob
(K29-6858-12)
Lock terminal board
(E70-0052-05)
Phono jack
(E63-1084-05)
AM
PHONO CD1
GND
FM
75Ω
ANTENNA
www
.
Knob
Indicator
(K29-6855-03)
(B12-0333-04)
CLIP INDICATOR
SPEAKERS
PHONES
Front glass
(B10-2418-03)
Phone jack
(E11-0271-05)
Cylindrical receptacle
(E56-0011-05)
Phono jack
(E63-0162-05)
S VIDEO
PRE OUT
FRONT
CENTER
SURROUND
VIDEO1
VIDEO2
MONITOR
REC
PLAY
PLAY
OUT
OUT
IN
IN
SUBWOOFER
VIDEO
AUDIO
CD2/TAPE2
MD/TAPE1
MONITOR
VIDEO1
VIDEO2
REC
PLAY
REC
PLAY
REC
PLAY
PLAY
OUT
IN
OUT
IN
OUT
IN
IN
x
ao
y
Phono jack
(E63-0141-15)x2
Phono jack
i
(E63-0139-15)
8
Front glass
Knob
(B10-2451-03)
(K29-6855-03)
DOLBY DIGITAL
DTS
VOLUME
INPUT SELECTOR
A
MUTE
DISPLAY MODE
B
DOWN
UP
Q Q
Indicator
Cylindrical receptacle
3
6 7
1 3
(B12-0331-04)
(E56-0012-05)
Knob
Knob
(K29-6858-12)
(K29-6852-04)
Miniature Phone jack
(E11-0291-05)
Optical receiving module
(W02-1181-05)
Phono jack
(E63-1028-05)
DIGITAL IN
VIDEO3
VIDEO4
IR RECEIVER
IR OUT
IN
LCD
PLAY
PLAY
VIDEO2
VIDEO3 VIDEO4
CD1
DC12V 15mA
REMOTE
IN
IN
OPTICAL OPTICAL COAXIALCOAXIAL
FRONT SPEAKERS
(6-16Ω)
VIDEO3
VIDEO4
PLAY
PLAY
IN
IN
Screw terminal board
u163
(E70-0095-05)
Miniature Phone jack
.
(E11-0389-05)
2 9
9 4
2 8
© 1999-3/B51-5511-00 (K/K) 1841
Panel *
(A60-)
CD2/TAPE2
MONITOR
S VIDEO
V AV AUX L-AUDIO-R
Foot
1 5
0 5
8
2 9
9 4
(J02-1405-03)
Phono jack
(E63-1030-05)
Miniature Phone jack
(E11-0293-05)
Miniature phone jack
(E11-0360-05)
Slide switch
Power cord bushing
(S31-2132-05)
(J42-0083-05)
IR REPEATER
OUT
SYSTEM
SL16
CONTROL
TEXT
SL16 XS8
SURROUND SPEAKERS
CENTER
SPEAKER
SWITCHED
(6-16Ω)
(6-16Ω)
TOTAL 100W MAX.
m
Screw terminal board
co
(E70-0096-05)
AC outlet *
(E03-)
*Refer to parts list on page37~.
9 9
2 8
9 9
AC power cord*
(E30-)

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Summary of Contents for Kenwood KRF-V7772D

  • Page 1: Service Manual

    AUDIO VIDEO SURROUND RECEIVER KRF-V7772D 3 7 63 1515 0 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...

  • Page 2: Table Of Contents

    KRF-V7772D/VR-3080 3 7 63 1515 0 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...

  • Page 3: Controls

    KRF-V7772D/VR-3080 3 7 63 1515 0 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...

  • Page 4: Disassembly For Repair

    KRF-V7772D/VR-3080 3 7 63 1515 0 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...

  • Page 5: Block Diagram

    VIDEO 4 Q611,612 Q353,355 SELECTOR MUTE Q623 (FRONT) Q621,622 MONITOR AV AUX Q354,356 Q641 (OSD) V-MUTE MUTE VIDEO 1 EACH (J TYPE) INPUT Q651,652 C-TERMMNAL u 1 6 3 Q653, Q655 IC67 V-MUTE u-COM MONITOR OUT DETECTOR VR-3080 Q642 KRF-V7772D Q643...

  • Page 6: Circuit Description

    KRF-V7772D/VR-3080 3 7 63 1515 0 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.
  • Page 7 KRF-V7772D/VR-3080 3 7 63 1515 0 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)
  • Page 8 KRF-V7772D/VR-3080 3 7 63 1515 0 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.
  • Page 9 KRF-V7772D/VR-3080 3 7 63 1515 0 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.
  • Page 10 KRF-V7772D/VR-3080 3 7 63 1515 0 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...
  • Page 11 KRF-V7772D/VR-3080 3 7 63 1515 0 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...

  • Page 12: Adjustment

    KRF-V7772D/VR-3080 3 7 63 1515 0 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...

  • Page 13: Wiring Diagram

    0-21 Rch 2 AUSTRALIA 0-71 (X09- ) (B/5) JAPAN 0-01 SL16 Lch 3 TEXT USED USED Rch 4 KRF-V7772D (M,Y) TYPE VR-3080/ VIDEO2 (X09- ) (X09- ) KRF-V7772D(Y) TYPE REPEATER (C/5) (D/5) OPTICAL Lch 1 VIDEO3 DIGITAL IN Rch 2...

  • Page 14: Pc Board

    PC BOARD (Component side view) 3 7 63 1515 0 TUNER UNIT X05-5030-10 (J70-1284-01) L 13942296513 TUNED u163 ANTENNA Refer to the schematic diagram for the value of resistors and capacitors.
  • Page 15 PC BOARD (Component side view) 3 7 6 3 1 5 1 5 0 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)
  • Page 16 PC BOARD (Component side view) X09 C/5 X09 D/5 3 7 6 3 1 5 1 5 0 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...
  • Page 17 CANADA UNLOCK POWER 1/16,1/17 4bits DIVIDER 11.3V T.MUTE DETECTOR RESET DRIVE 5.0V 10.6V 1.2K T. MUTE KRF-V7772D (X05-503X-XX) +15V PLL DT DESTINATION C26, C30, C79, CF1,2 UNIT No. DATA SHIFT REGISTER LATCH UNIVERSAL COUNTER B I/F COUNTRY ABB. PLL CLK CH.SPACE...
  • Page 18 SURROUND UNIT 3 7 6 3 1 5 1 5 0 (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...

  • Page 19: Schematic Diagram

    3 7 6 3 1 5 1 5 0 (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...
  • Page 20 (X08- ) (I/10) 3 7 6 3 1 5 1 5 0 (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...
  • Page 21 0-10 E63-1028-05 E63-1084-05 E63-0162-05 20db SEL SURROUND CANADA DRIVE MUTE MUTE MUTE DRIVE DRIVE DRIVE DRIVE DRIVE 3.0V KRF-V7772D (X08-297X-XX) 16.0V 16.0V 16.0V DESTINATION DTC124ESA 14.6V 16.0V UNIT No. R701 R702 R703 R704 R705 R706 R755 R772 R773 C190 J61,62 Q461 -16.5V...
  • Page 22 MAIN UNIT (X09-62XX-XX) (A/5) 16.9V +17V R109 3 7 6 3 1 5 1 5 0 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...
  • Page 23 R159 WH11 C181 CN16 CN15 25.5V C161 C162 0.047 R160 CENTER SP. 1000u35 470u35 3.3 1/4W MA142WA 1SS301 USED KRF-V7772D (Y,M TYPE) C333 C335 0.22 0.22 MA142WK (X09- ) (D/5) -28.4V C331 0.1 C170 UN5212 100u25 R164 WH13 110-120V~ WH19...
  • Page 24 FL DISPLAY UNIT (X08-297X-XX) (D/10) 3 7 6 3 1 5 1 5 0 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...
  • Page 25 VR-3080 (X08-2970-10) R945 47K DESTINATION R667, UNIT No. Q661 J65,66 ABB. COUNTRY U.S.A. R943 47K 0-10 E56-0011-05 CANADA R942 47K KRF-V7772D (X08-297X-XX) R941 47K LA1837 TC7WU04FU DESTINATION R667, R940 47K J65,66 UNIT No. Q661 COUNTRY ABB. R939 47K 2-91 0-21...
  • Page 26 J 1 J 2 J 3 J 4 J 5 J 7 (E/5) CD2/TAPE2/ FRONT VIDEO1 SPEAKERS POWER (D/10) (E/10) CHANNEL SPACE DE-EMPHASIS (1/2) ANTENNA (F/10) X09-6270-21 (7P) (A/5) (13P) VIDEO AV AUX (H/10) J67 J63 X05-5630-21 (2/2) INPUT SELECTOR SPEAKERS MUTE DISPLAY MODE u 1 6 3 KRF-V7772D/VR-3080...
  • Page 27 Desti- Desti- Ref. No Parts No. Description Ref. No Parts No. Description ress Parts nation marks Parts nation marks ress KRF-V7772D/VR-3080 J61-0098-05 WIRE BAND A01-3690-01 METALLIC CABINET K27-2248-04 KNOB (BUTTON) A09-1115-08 BATTERY COVER K29-6852-04 KNOB A60-1620-02 PANEL K29-6855-03 KNOB A60-1621-02...
  • Page 28 3 7 6 3 1 5 1 5 0 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 3 7 6 3 1 5 1 5 0 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 3 7 6 3 1 5 1 5 0 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 3 7 6 3 1 5 1 5 0 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 3 7 6 3 1 5 1 5 0 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 3 7 6 3 1 5 1 5 0 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 3 7 6 3 1 5 1 5 0 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 3 7 6 3 1 5 1 5 0 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.

  • Page 36: Exploded View

    3 7 6 3 1 5 1 5 0 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

    3 7 6 3 1 5 1 5 0 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.
  • Page 38 3 7 6 3 1 5 1 5 0 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.

  • Page 39: Specifications

    KRF-V7772D/VR-3080 3 7 63 1515 0 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: ......1.6µV (75Ω) / 15.2dBf (75kHz dev., sinad 30dB) 100 watts per channel minimum RMS, both channels driven, at 6 Ω...

  • Page 40: Specifications

    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:

Vr-3080

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