Kenwood VR 3080 - Dolby Digital Receiver User manual

AUDIO VIDEO SURROUND RECEIVER
KRF-V7772D
VR-3080
SERVICE MANUAL © 1999-3/B51-5511-00 (K/K) 1841
POWER
ON/STANDBY
CLIP INDICATOR DOLBY DIGITAL DTS
SPEAKERS
A
BMUTE
VOLUME
DOWN UP
INPUT SELECTOR
DISPLAY MODE
PHONES S VIDEO V AV AUX L-AUDIO-R CD2/TAPE2
MONITOR
PRE OUT
FRONT
SURROUND CENTER
SUBWOOFER
AM
GND
FM
75Ω
ANTENNA
AUDIO
PHONO CD1
MD/TAPE1
REC
OUT PLAY
IN
VIDEO1
REC
OUT PLAY
IN
VIDEO2
PLAY
IN
VIDEO3
PLAY
IN
VIDEO4
PLAY
IN
CD2/TAPE2
MONITOR
REC
OUT PLAY
IN
FRONT SPEAKERS
(6-16Ω)
SURROUND SPEAKERS
(6-16Ω)
CENTER
SPEAKER
(6-16Ω)
SWITCHED
TOTAL 100W MAX.
S VIDEO
VIDEO
MONITOR
OUT
VIDEO1
REC
OUT PLAY IN
VIDEO2
PLAY
IN
VIDEO3
PLAY
IN
VIDEO4
PLAY
IN
DIGITAL IN
SL16
TEXT SYSTEM
CONTROL
VIDEO2
OPTICAL OPTICAL COAXIALCOAXIAL
VIDEO3 VIDEO4 CD1
IRRECEIVER
IN
DC12V 15mA
IRREPEATER
OUT
IROUT
LCD
REMOTE
SL16 XS8
Panel *
(A60-)
Panel escutcheon
(B01-0533-21)
Knob
(K29-6855-03) Indicator (B12-0333-04) Knob
(K29-6855-03)
Front glass
(B10-2418-03)
Indicator
(B12-0326-04) Front glass (B10-2451-03)
Cylindrical receptacle
(E56-0012-05) Foot (J02-1405-03)
Phone jack
(E11-0271-05)
Knob
(K29-6858-12)
Indicator
(B12-0331-04)
Knob
(K29-6858-12) Knob (K29-6852-04)
AC power cord*
(E30-)
Slide switch
(S31-2132-05)
Phono jack
(E63-1028-05)
Cylindrical receptacle
(E56-0011-05) Phono jack
(E63-0162-05)
Phono jack
(E63-0141-15)x2
Screw terminal board
(E70-0096-05)
*Refer to parts list on page37~.
Power cord bushing
(J42-0083-05)
Phono jack
(E63-1084-05)
Screw terminal board
(E70-0095-05)
Miniature phone jack
(E11-0360-05)
Miniature Phone jack
(E11-0291-05)
Optical receiving module
(W02-1181-05)
Lock terminal board
(E70-0052-05)
AC outlet *
(E03-)
Miniature Phone jack
(E11-0389-05)
Phono jack
(E63-0139-15)
Miniature Phone jack
(E11-0293-05)
Phono jack
(E63-1030-05)
KRF-V7772D(K)COVER1,1( 99.10.2910:11AM y[W 2

PowerPad
(A70-1191-05) : RC-R0907
Battery cover(A09-1115-08)
Remote
ENTER
VOLUME
CONFIRM
MUTE
ON/STANDBY
Batteries AM Loop Antenna (T90-0833-05)
AC
(E03-0115-05)
plug adapter
FM
(T90-0841-05)
Antenna
Use to adapt the plug onthe
power cord to the shape of the
wall outlet.
(Present only for regions where
use is necessary.)
AM Antenna Base
KRF-V7772D/VR-3080
2
CONTENTS / ACCESSORIES
CONTENTS/ACCESSORIES/CAUTIONS...................2
CONTROLS.................................................................3
DISASSEMBLY FOR REPAIR.....................................4
BLOCK DIAGRAM.......................................................5
CIRCUIT DESCRIPTION.............................................6
ADJUSTMENT...........................................................12
WIRING DIAGRAM....................................................13
PC BOARD ................................................................14
SCHEMATIC DIAGRAM............................................19
EXPLODED VIEW .....................................................36
PARTS LIST...............................................................37
SPECIFICATIONS.....................................................49
Contents
Accessories
RESET
Resetting ReceiverPowerPad
If you want to reconfigure PowerPad, you can reset
it. You do not need to do this unless you experience
a problem.
1. Open the cover and remove the batteries,
2. Use a pen or other thin-tipped object to press
the blue button in the center of the battery case:
OPEN
3. Reinstall the batteries and follow the instruc-
tions in this chapter to set up PowerPad again.
If none of the above solutions work, reset the micro-
processor:
(For USA and Canada)
1. Turn the receiver off.
2. Unplug the receiver.
3. Plug it back in while pressing and holding the
Power button (you may need someone else to
help you do this)
4. Continue to hold the Power button for more than
1 second.
(For Other Countries)
1. Turn the receiver off. (The Power button is OFF
position.)
2. Press ON/STANDBY button while pressing and
holding the Power button.
3. Continue to hold the Power button for more than
1 second.
KRF-V7772D(K)COVER1,1( 99.10.2910:11AM y[W 3

KRF-V7772D/VR-3080
3
CONTROLS
POWER
ON/STANDBY
CLIP INDICATOR DOLBY DIGITAL DTS
SPEAKERS
A
BMUTE
VOLUME
DOWN UP
INPUT SELECTOR
DISPLAY MODE
PHONES S VIDEO V AV AUX L-AUDIO-R CD2/TAPE2
MONITOR
POWER
ON/STANDBY
ON OFF
9. Volume control knob
10. Display Mode button
11. Input selector button
12. AV AUX S VIDEO jack
13. AV AUX composite video jack
14. AV AUX audio jacks
15. CD2/Tape 2 Monitor indicator light
1. Power On/Standby button
2. Power indicator light
3. Display panel
4. Speaker selector buttons
5. Headphone jack
6. Mute button
7. IR indicator
8. IR transmitters
Except for USA
and Canada
ENTER
VOLUME
CONFIRM
MUTE
ON/STANDBY
1. LCD display screen
2. Joystick
3. Enter button
4. Volume up button
5. Volume down button
6. Confirm button
7. Mute button
8. On/Standby button
KRF-V7772D(K)COVER1,1( 99.10.2910:11AM y[W 6

6
6
3
4
4
9
9
3
3
2
11
12
1
43
5x2
9x5
8x2
3x2
7
13
13 13
14
14
15
10
KRF-V7772D/VR-3080
4
DISASSEMBLY FOR REPAIR
1
4
5
6
x2
3x4
2
X09-
x3
HOOK
HOOK
14
6
6
6
6
x2
3
2x2
2x7
X08-
X08-
1
1
4
4
46
65
B side
[Remove the escutcheon (operation
panel)]
1. Remove the knob(1), the nut (2), the 11
screws(3, 4, 5) and 2 hooks (6), then
remove the front panel ass'y.
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 hooks(!) then
remove the escutcheon(@).
[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
(6).
[Check the B side of the DSP PCB
(X08)]
1. Remove the 11 screws(1,2).
2. Remove the X08(C/10)(J/10) (3), then
remove the X08(A/10) (4).
3. Solder the pin 1(-17V), the pin 4 (+17V) and
the pin 6(GND) between CN1 on the
X08(A/10) and CN2 on the X08(I/10) with 3
lead wires (5).
4. Connect between the each GND of J1, J62,
J61, J2 on the X08(A/10)and the rear panel
with 4 alligator clip lead wires (6).
Fig. 2
Fig. 1
Fig. 3
KRF-V7772D(K)COVER1,1( 99.10.2910:11AM y[W 7

VIDEO 1
AV AUX
(FRONT)
VIDEO 4
VIDEO 3
VIDEO 2
VIDEO 1
COMP
VIDEO
PLAY
COMP
REC
VIDEO
Q611,612
BA7626F
IC61
Q621,622
OUT Q623
(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
Q643
Q653,
Q655
Q642
Q641
VIDEO 1
Q651,652
BA7626F
IC65,66
CD1
VIDEO1
VIDEO2
VIDEO3
VIDEO4
MD/TAPE1
TAPE2
VIDEO1
VIDEO3
VIDEO2
VIDEO4
AVR
IC8
+5.7V
GND
D17-20
FINAL TR.
FINAL TR.
GND
PRE DRIVE
GND
PRE DRIVE
D2
D1
Q100
RELAY
DRIVER
-17V
GND
+17V D3-6
Q2
AVR
Q1
+5.0V
GND
Q16
AVR D13-16
Q7 AVR
-35V
FIL
FIL
STROKE SW
Q8
RELAY
DRIVER
AC OUTLET
D9
K6
T1
AVR
IC5
CD1
L3,R3
L2,R2
L1,R1
L8,R8
L7,R7
L6,R6
L5,R5
L5,R5
MONITOR
L6,R6
MD/TAPE1 L4,R4
L3,R3
IC2
BUFFER
REC OUT
L1,R1 L8,R8
L7,R7
IN L2,R2
LINE
BUFFER
IC3
TUNER
2.5mV/
PHONO
IC6
IC5
IC4
IC1
EQ
(ANALOG)
INPUT ATT IC1
BUFFER
DAC
DIR
IC3 21kHz LPF
21kHz LPF
21kHz LPF
21kHz LPF
IC11
IC21
IC31(1/2)
IC31(2/2)
SUB
CENTER
LS,RS,
FL,FR
CONFIG-2
IC12,13
FILLTER
TONE OFF
L7,R7
L6,R6
L5,R5
L2,R2
TONE
IC41
IC42
L1,R1
L8,R8
L3,R3
VOLUME
VOLUME
VOLUME
VOLUME
IC16
IC26
IC36(1/2)
IC36(2/2) Q352
Q251,252
-20dB
Q351
Q151,152
ATT
-20dB
ATT
-20dB
ATT
-20dB
ATT
IC37
(2/2)
(1/2)
IC27
IC17
AMP
Q15
Q13,14
Q11,12
MUTE
MUTE
MUTE
A-MUTE
MUTE
Q253-256
Q353,355
MUTE
Q354,356
MUTE
MUTE
K5
K4
K2
POWER
AMPLIFIER
POWER
POWER
K3
RELAYA
RELAY CS
RELAY B
A-MUTE
S-MUTE
SW-MUTE
FRONT
SW
L,R
FRONT B
C
LS,RS
PHONES
L,R
FRONTA
SPEAKERS
PRE OUT
1.0V/1K
u-COM
IC71
CONTROL
REMOTE
A91
PROTECTION
S1 DETECTOR
V MUTE
SP.RELAY
SW MUTE
S MUTE
A MUTE
200mV/47K
200mV/2.2K
IN
OUT
OTHER
IC15
AMPLIFIER
AMPLIFIER
DIGITAL
PHONES1.3Vrms/32 S1
CD2/TAPE2
PLAY
IN
AV AUX IN
(FRONT)
REC
OUT
COAXIAL
IN
OPTICAL
IN
(2/2)
IC32
L,R
+5.7V IC62
AVR
4.7K
PHONO
Q153-156
1.1Vrms/32
A2
A1
L4,R4
MONITOR
Q3,4Q1,2
654
IC37
C
LS,RS
A/C
CONVERTER
CS4226
DSP
SRAM
IC51
IC52
X51
IC56,57
-6dB
ATT
IC32
(1/2)
L4,R4
TUNER 8
AUDIO SEL. 3
DPS 10
DIR DAC,ADC 9
TONE.VOL. 3
20dB ATT
3
6 (J TYPE)
OUT
IR REPEATER
J85
IN
IR RECIEVER
J84
OUT
IR RECIEVER
J83
IR LED
REMOTE OUT
D571-574
SYSTEM
J81
SYSTEM
CONTROL
J82
TEXT
SL16
FL
ED1
LEDx7
FL
MI-COM
IC91
38kHz
FILTER
856,857
Q851,852,
455kHz
FILTER
Q853-855
CONTROL
IC72
REMOTE
MI-COM
X8
RX
BUSY
TX
DATA,
D30
D10
AVR
IC54
+3.3V
AVR
J
K,Y,M,X
20.0V/4
24.5V/6K,Y,M,X
J
5ch SP. OUTPUT
DETECTOR
S1
IC67
J1
J2
-20dB ATT
K1
V-MUTE
Y
C
C
Y
Y
C
C
Y
C
Y
V-MUTE
Y
C
C
Y
+
+
+
SE-RLY
+
+
+
POWER-RLY
to
u-COM
to
POWER
SELECTOR
to
SRAM
CODEC
VOLUME
-3dB ATT -6dB ATT
-144
R141
ST
RST
CK
DI
DO
51
to
u-COM
FL
TONE
TUNER
PRE AMP
to DSP
to
to
VIDEO
SELECTOR
u-COM
EACH
INPUT
C-TERMMNAL
VR-3080
(X09) (X08)
(X09)
(X09)
KRF-V7772D
(X08)
(X05)
(X08)
(X08)
(J TYPE)
(X08)
(SIGNAL STAGE) (u-COM STAGE)
KRF-V7772D/VR-3080
5
BLOCK DIAGRAM
KRF-V7772D(K)COVER1,1( 99.10.2910:11 AM y[W 10

KRF-V7772D/VR-3080
6
CIRCUIT DESCRIPTION
(0 : Pull down, 1 : Pull up)
TYPE BAND Reception
frequency Channel IF
PLL standard
Tuner sw
space frequency TSW3 TSW2 TSW1 TSW0
K1 FM 87.5MHz~108.0MHz 100kHz +10.7MHz 25kHz 0000
1700 AM 530kHz~1700kHz 10kHz +450kHz 10kHz
K2 FM 87.5MHz~108.0MHz 100kHz +10.7MHz 25kHz 0011
1610 AM 530kHz~1610kHz 10kHz +450kHz 10kHz
K4 FM 87.5MHz~108.0MHz 100kHz +10.7MHz 25kHz 1010
1700 RBDS AM 530kHz~1700kHz 10kHz +450kHz 10kHz
E1 FM 87.5MHz~108.0MHz 50kHz +10.7MHz 25kHz 0001
AM 531kHz~1602kHz 9kHz +450kHz 9kHz
E3 FM 87.5MHz~108.0MHz 50kHz +10.7MHz 25kHz
RDS AM 531kHz~1602kHz 9kHz +450kHz 9kHz 0101
FML 65.0MHz~74.0MHz 10kHz +10.7MHz 5kHz
Q1 FMH 87.5MHz~108.0MHz 50kHz +10.7MHz 5kHz 1011
RDS AM 531kHz~1602kHz 9kHz +450kHz 9kHz
MK2/E1 is switched with only the setting of DSW1 (X11 : S601). 00X1
(DSW1 = 0 : K2 type, 1 : E1 type)
10 11 12 13
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
• SPEAKER B : OFF
• CD2/TAPE2 MONITOR : TAPE2 OFF
• TONE : OFF
• LOUDNESS : OFF
• DISPLAY MODE : DEVICE+DGTL/ANLG
• DIMMER : DIMMER 1 (LIGHTEST)
• SURROUND MODE : STEREO
• ROOM SIZE : Med
• WALL TYPE : Med
• EFFECT LEVEL : 3
• MIDNIGHT MODE : OFF
• DISTANCE : FL/FR : 10ft
: C : 10ft
: RS/LS : 5ft
: SW : 10ft
• FRONT SP. : LARGE
• CENTER SP. : NORMAL
• SURROUND SP. : NORMAL/WIRED
• SUB WOOFER : ON
• SW Re-Mix : OFF
• INPUT LEVEL : 0dB
• CH. LEVEL : 0dB
• TONE BASS : 0dB
• TONE TREBLE : 0dB
• TUNING MODE : AUTO
• PRESET MEMORY : TEST MEMORY FRE-
QUENCY (Same value with KR-V999D/1090VR)
• LAST BAND : FM
• FM LAST FREQUENCY : 87.5MHz
• AM LAST FREQUENCY : 531kHz (CH. SP 9kHz)
: 530kHz (CH. SP 10kHz)
• LAST P. ch : [- -ch]
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.
3. TEST MODE
[setting method]
While pressing INPUT SELECTOR key, plug the AC
power cord into an AC outlet (K, P type) or turn on the
AC POWER switch. When a set is set up in test mode
condition a set becomes the following condition.
Automatic POWER ON. All indicator tube (FL) and
CLIP INDICATOR LED are lighted. The other LED are
flashed.
A backup at the thing except ON/OFF of POWER is
initialized.
[cancel method]
The power supply is turned off.
2. Condition by the destination or model
KRF-V7772D(K)COVER1,1( 99.10.2910:11AM y[W 11

KRF-V7772D/VR-3080
7
CIRCUIT DESCRIPTION
(X08)IC16 (X08)IC15
(X08)IC26 (X09)IC5
(X08)IC36 (X09)IC4
(X08)IC42
(X08)S91-96 (X08)S97 (X08)IC71 (X08)IC3
(X08)IC91 (X08)IC51
(X09)ED1
(X09)K2-5
(X05)
(X08)J81
(X08)IC72 (X08) (X08)A91 (X08)J84
MAIN UCOM
µPD784214GF-527
TACT KEY ROTARY-
ENCODER
FLDRIVER
uPD780204
DESTYINA
FL TI
ON SW
LCD REMOTE
TRANSMIT IC
VOLUME IC
TC9412
VOLUME IC
TC9412
VOLUME IC
TC9412
SELECTOR IC
TC9162
SELECTOR IC
NJU7312AL
SELECTOR IC
NJU7313AL TONE CONTROL IC
TC9184
CODEC
CS4226
DSP
YSS912
SP.RELAY
MUTETUNERUNIT
IR RECEIVER
DESTINATION IRREMOTE IR RECEIVER
SYSTEM
CONTROL
uPD17215
4. Main microprocessor: uPD784214GF-527(X08: IC71)
4-1 Microprocessor periphery block diagram
Push key INPUT SELECTOR SP A SP B MUTE DISPLAY MODE
TUNER STEREO P. CALL
UP P. CALL DOWN
ATT
OFF ON FM
AUTO/STEREO MANUAL/MONO
(DOLBY DIGITAL LED : OFF ON)
(Press the key for 2 secs)
CD1 STEREO TONE (TUNED)
+10 (light on) OFF (light off)
ANALOG DIGITAL
MD/TAPE1 STEREO
IR RECEIVER A(ON) OFF
VIDEO1 PRO LOGIC
VIDEO2 3 STEREO
DISPLAY VIDEO3 STEREO
VIDEO4 DSP
ARENA JAZZ CLUB
THEATER STADIUM
CATHEDRAL
AV AUX STEREO TAPE2
OFF ON
PHONO STEREO INPUT LEVEL
0dB -3dB -6dB
KRF-V7772D(K)COVER1,1( 99.10.2910:11AM y[W 14

KRF-V7772D/VR-3080
8
CIRCUIT DESCRIPTION
Pin No. Name I/O Connect Description
1-8 REM_D0-D7 O P.D. LCD REMOTE DATA OUT-7
9 VDD - - +5V
10-13 TSW3-0 I - TUNER DESTINATION SWITCH3-0
14 ENC_A I - VOLUME ENCODER INPUT A
15 ENC_B I - VOLUME ENCODER INPUT B
16 - I P.D. Not used
17 T_MUTE O P.U. TUNER MUTE
18 PLL_CLK O P.D. PLL(LC72131) CLOCK
19 PLL_DATA O P.D. PLL(LC72131) DATA
20 PLL_DO I P.D. PLL(LC72131) DO
21 PLL_CE O P.D. PLL(LC72131) CE
22 TEST/VPP - - GND
23 PLL_SD I P.U. PLL(LC72131) SD
24 PLL_STEREO I P.U. PLL(LC72131) STEREO
25-28 WIDE_V1-4 I P.U. VIDEO1-4 S1 WIDE DETECTOR
29 WIDE_AUX I P.U. AV AUX S1 WIDE DETECTOR
30 WIDE_OUT O P.D. MONITOR OUT S1 WIDE INPUT
31 VIDEO_MUTE O P.D. VIDEO MUTE (mute on:H)
32 TONE_ST O P.D. TONE(TC9184) STROBE
33 VOL_ST O P.D. VOLUME(TC9412) STROBE
34 VOL_DATA O P.D. VOLUME(TC9412), TONE(TC9184) DATA
35 VOL_CLK O P.D. VOLUME(TC9412),TONE(TC9184)CLOCK
36 CE I P.D. CHIP ENABLE
37 VDD - - +5V
38 X2 - - 12.5MHz
39 X1 I - 12.5MHz
40 VSS - - GND
41,42 XT2,1 - - Not used
43 RESET I - RESET
44 REM0 I P.D. REMOTE CONTROLLER SIGNAL INPUT 0 (FRONT PANEL)
45 REM1 I P.D. REMOTE CONTROLLER SIGNAL INPUT 1 (IR RECEIVER)
46 CODEC_CS I P.D. CODEC(CS4226) CHIP SELECT
47 CODEC_ERR I P.D. CODEC(CS4226) ERROR DETECT
48 CODEC_AC3 I P.D. CODEC(CS4226) AC-3(DOLBY DIGITAL, DTS, MPEG DETECT
49 DSP_DTS I P.D. DSP(YSS912) DTS DETECT
50 DSP_AC3 I P.D. DSP(YSS912) AC-3 DETECT
51 AVDD - - +5V
52 AVREF0 - - GND
53 DATA_DET I P.D. DIR DATA DETECT
54 CODEC_FREQ1 I P.D. CODEC(CS4226) CHANNEL STATUS FREQ. BIT 1
55 CODEC_FREQ0 I P.D. CODEC(CS4226) CHANNEL STATUS FREQ. BIT 0
56,57 Not used I - GND
58 CODEC_AUDIO I P.D. CODEC(CS4226) non AUDIO DETECT
59 DSP_NPCM I P.D. DSP(YSS912) non PCM DETECT
60 DSP_SENC I P.D. DSP(YSS912) SURROUND ENCODE DETECT
61 AVSS - - GND
62 DSP_CS_A O P.D. DSP(YSS912) CHIP SELECT
63 DSP_CS_B O P.D. DSP(YSS912) SUB DSP CHIP SELECT
64 AVREF1 - - +5V
65 DSP_SI I P.D. DSP(YSS912), CODEC(CS4226)DATA IN
4-2 Pin description
KRF-V7772D(K)COVER1,1( 99.10.2910:11AM y[W 15

KRF-V7772D/VR-3080
9
CIRCUIT DESCRIPTION
Pin No. Name I/O Connect Description
66 DSP_SO O P.D. DSP(YSS912), CODEC(CS4226)DATA OUT
67 DSP_SCK O P.D. DSP(YSS912), CODEC(CS4226)CLOCK
68 TEXT_RX I P.D. CD TEXT UART COMMUNICATION DATA IN
69 TEXT_TX O P.D. CD TEXT UART COMMUNICATION DATA OUT
70 DSP_IC O P.D. DSP(YSS912) INITIAL CLEAR
71 FL_RST O P.D. FL DRIVER(uPD780204) RESET
72 FL_STB O P.D. FL DRIVER(uPD780204) STROBE
73 FL_DI I P.D. FL DRIVER(uPD780204) DATA IN
74 FL_DO O P.D. FL DRIVER(uPD780204) DATA OUT
75 FL_CLK O P.D. FL DRIVER(uPD780204) CLOCK
76 8/16 I/O - SERIAL XS8/SL16 CHANGEOVER(SL16:L)
77 S_DATA I/O P.D. SERIAL DATA
78 S_BUSY I P.D. SERIAL BUSY
79 SW_MUTE O P.D. SUBWOOFER MUTE
80 ATT-20dB O P.D. 20dB AMP CHANGEOVER (AMP on:H)
81 SUR_MUTE O P.D. SURROUND ch MUTE
82 MAIN_MUTE O P.D. MAIN MUTE
83,84 SP_A,B O P.D. SPEAKER A,B RELAY
85 SP_CS O P.D. CENTER,SURROUND SPEAKER RELAY
86 POWER O P.D. POWER RELAY
87 SECOND O P.D. POWER RELAY 2
88 I_PROT I P.D. PROTECTION CURRENT DETECT
89 V_PROT I P.D. PROTECTION VOLTAGE DETECT
90 IR_RCV I - IR RECEIVER DISTINCTION(IR RECEIVER EXIST:H)
91 SEL_CLK O P.D. SELECTOR(NJU7312,NJU7313,TC9162) CLOCK
92 SEL_DATA O P.D. SELECTOR(NJU7312,NJU7313,TC9162) DATA
93 SEL_ST O P.D. SELECTOR(NJU7312,NJU7313,TC9162) STROBE
94 IN_ATT3 O P.D. INPUT ATTENUATOR -3dB
95 IN_ATT6 O P.D. INPUT ATTENUATOR -6dB
96 TAPE2_LED O P.D. TAPE2 LED
97 REM_RWR I P.D. LCD REMOTE RWR
98 REM_ENB I P.D. LCD REMOTE ENABLE
99 REM_REQ O P.D. LCD REMOTE REQUEST
100 VSS - - GND
KRF-V7772D(K)COVER1,1( 99.10.2910:11AM y[W 18

TC9162AF(X08:IC15) (1:H , 0:L)
PIN No.(L ch) 2 3 5689
PIN No.(R ch) 27 26 24 23 21 20
SW No. (L.R ch) L1,R1 L2,R2 L3,R3 L4,R4 L5,R5 L6,R6
TONE on 1 0
TONE o ff 0 1
SPEAKERS B on 1 0
SPEAKERS B o ff 0 1
ANALOG THROUGH 1 0
D/ A OUT (LOW BOOS T on *1) 0 1
D/ A OUT (LOW BOOS T o ff) 0 0
11
18
L7,R7
0
0
1
*1: SW off
NJU7313AL(X09:IC4), NJU7312AL (X09:IC5) (1:H , 0:L)
NJU7313AL NJU7312AL *3
PIN No.(Lch) 2 3 4 5 7 8 10 11 2 3 4 6 7 8
PIN No.(Rch) 27 26 25 24 22 21 19 18 27 26 25 23 22 21
SW No. (Lch) L1 L2 L3 L4 L5 L6 L8 L9 L1 L2 L3 L4 L5 L6
SW No.(Rch) R1 R2 R3 R4 R5 R6 R7 R8 R1 R2 R3 R4 R5 R6
*1 TUNER 1 0 0 0 0 0 1 1 1 0 0 0
CD1 000010 111000
MD/TAPE1 000100 011000
VIDEO1 0 0 0 0 0 0 1 1 0 0 1 0
VIDEO2 0 0 0 0 0 0 1 1 1 0 0 1
VIDEO3 0 0 0 0 0 0 1 1 1 0 0 0
VIDEO4 0 0 0 0 0 0 1 1 1 0 0 0
AVAUX 000000 111100
PHONO 0 1 0 0 0 0 1 1 1 0 0 0
CD2 /TAPE2 o ff 0 1
CD2 /TAPE2 on 1 0
*2 00100000111000
10 11
19 18
L7 L8
R7 R8
00
00
00
00
00
10
01
00
00
00
KRF-V7772D/VR-3080
10
CIRCUIT DESCRIPTION
4-3 Circuit control
(a) Selector IC
(b) Selector IC
(VIDEO SELECTOR, DIGITAL/ANALOG INPUT DISTINCTION) (1:H , 0:L)
PIN No. 32 33 34 35 36 37 38
P0 P1 P2 P3 P4 P5 P6
VIDEO1 0 0 0 0 0 0
VIDEO2 1 0 1 0 0 0
VIDEO3 1 1 1 1 0 0
VIDEO4 0 1 0 1 0 0
AVAUX11111 0
DIGI TAL IN 00
ANALOG IN 10
39
P7
0
0
0
0
0
0
0
(c) DSP:YSS912 (X08:IC51)OUTPUT PORT :OPORT0~7
*1: ANALOG INPUT or DIGITAL INPUT with except STEREO mode
*2: DIGITAL INPUT with STEREO mode
*3: CD2/TAPE2 MONITOR is set CD2 position and L2,R2(REC OUT of CD2/TAPE2) of NJU7312AL is always
used by '0'.
KRF-V7772D(K)COVER1,1( 99.10.2910:11AM y[W 19

KRF-V7772D/VR-3080
11
CIRCUIT DESCRIPTION
FREQ0
FREQ0
(55 PIN)/FREQ1
FREQ1
( 54 PIN )
32 kHz 44 .1kHz 48 kHz Reserved
HLLH
HLHL
AUDIO (58 PIN)
Cannel Status Bit0 0 1
AUDIO L H
CODEC _ AC 3 (4 8 PIN )
AC -3/MPEG Data Stream input EXIST NON
AC-3,MPEG,dts(DVD) H L
(d) CODEC:CS4226(X08:IC3) (PIN No.: MAIN UCOM PIN No.)
KRF-V7772D(K)COVER1,1( 99.10.2910:11AM y[W 22

KRF-V7772D/VR-3080
12
ADJUSTMENT
PRE OUT
FRONT
SURROUND CENTER
SUBWOOFER
AM
GND
FM
75Ω
ANTENNA
AUDIO
PHONO CD1
MD/TAPE1
REC
OUT PLAY
IN
VIDEO1
REC
OUT PLAY
IN
VIDEO2
PLAY
IN
VIDEO3
PLAY
IN
VIDEO4
PLAY
IN
CD2/TAPE2
MONITOR
REC
OUT PLAY
IN
FRONT SPEAKERS
(6-16Ω)
SURROUND SPEAKERS
(6-16Ω)CENTER
SPEAKER
(6-16Ω)
SWITCHED
TOTAL 100W MAX.
S VIDEO
VIDEO
MONITOR
OUT
VIDEO1
REC
OUT PLAY IN
VIDEO2
PLAY
IN
VIDEO3
PLAY
IN
VIDEO4
PLAY
IN
DIGITAL IN
SL16
TEXT SYSTEM
CONTROL
VIDEO2
OPTICAL OPTICAL COAXIALCOAXIAL
VIDEO3 VIDEO4 CD1
IRRECEIVER
IN
DC12V 15mA
IRREPEATER
OUT
IROUT
LCD
REMOTE
SL16 XS8
(A)
(B)
(C)
FM SG
FM SG
AG
MPX AG
AC voltmeter
Dummy antenna
Oscilloscope Distortion meter
SYSTEM CONNECTIONS
No. ITEM INPUT
SETTINGS OUTPUT SETTINGS RECEIVER SETTINGS ALIGNMENT POINTS ALIGN FOR FIG.
1 DISCRIMINATOR
(A)
98.0MHz 1kHz,
±40kHz dev.
70dBf (ANT. input)
Connect a
DC voltmeter
between CN2 1
and CN2 2(X05)
MONO
98.0MHz L4 (X05-) 0V (a)
2DISTORTION
(MONO)
(A)
98.0MHz 1kHz,
±40kHz dev. MONO
70dBf (ANT. input)
(B) MONO
98.0MHz L5 (X05-) Minimum distortion (a)
3DISTORTION
(STEREO)
(C)
98.0MHz 1kHz,
±40kHz dev.
Selector : L or R Pilot
: ±6kHz dev.
70dBf (ANT. input)
(B) AUTO
98.0MHz IFT(RF
FRONTEND
: A1)
(X05-)
Minimum
distortion
(L or R) (a)
4 TUNING LEVEL
(A)
98.0MHz MONO
1kHz, ±40kHz dev.
25dBf (ANT. input)
(B) MONO
98.0MHz VR1 (X05-)
Adjust VR1
and stop at the
point where ED1
(TUNED) goes
on.
(a)
FM SECTION : SELECTOR : FM *Adjust NO.1 and NO.2 repeat.
AUDIO SECTION SPEAKER : A PREOUT : OFF PROLOGIC : ON
<1> IDLE CURRENT —
Connect a DC
voltmeter across
each T.P.
CN21 : L
CN22 : R
CN23 : LS
CN24 : RS
CN25 : C
(X09-)
(FRONT 2ch
MODE)
Volume:0
VR1(L)
VR2(R)
VR5(LS)
VR4(RS)
VR3(CENTER)
(X09-)
10mV
KRF-V7772D(K)COVER1,1( 99.10.2910:11AM y[W 23

V
V V
V
V
V
VV
VV
V V
VVV
V
F2
F1
V
V
V V
V
1
4
E1
0-01
0-21
GENERAL MARKET
AUSTRALIA J
Y
UNIT No.
DESTINATION
COUNTRY ABB.
JAPAN X
PX M
ABB.COUNTRY
U.S.A.
CANADA
DESTINATION
P
K0-10
UNIT No.
0-71
15
1
15
1
P9
COUNTRY
CANADA
U.S.A. ABB.
P
K
DESTINATION
COUNTRY ABB.
DESTINATION
GENERAL MARKET
JAPAN
PX
J
M
Y
AUSTRALIA X
(K,P)
(Y,M)
(X)
(J)
: AC120V 60Hz
: AC110-120V/220-240V~
50/60Hz
: AC240V~ 50Hz
: AC100V 50Hz/60Hz
8
1
YES
J1,2
YES
J11-13
J1,2
YES NO
J11-13
NO YES
9
1
9
1
11 11
11
WH7 RED
WH15 ORG
WH8 BLK
WH12 BLK
WH11 RED
WH14 VIOL
WH13 YEL
F5
F4
F3
AC220-
240V~
AC110-
120V~
WH17 WHT
WH16 BLU
WH18 RED
WH19 BRN
2
1
WH4 ORG
WH3 BLU P3
P4
8
1
1
1
33
SL16 XS8
2-91
AUSTRALIA
JAPAN J
X
ABB.
ABB.COUNTRY
DESTINATION
GENERAL MARKET
PX M
Y
DESTINATION
U.S.A.
COUNTRY K
UNIT No.
UNIT No.
CANADA P 0-10
0-21
0-71
0-01
13
13
1
1
21 21
11
7
1
7
1
77
11
77
11
1313
11
5
1
5
1
3
1
3
1
1
4
1
4
16
1
16
1
16
1
16
1
P1
WW
GND
FM 75
J1
AM ANT
KRF-V7772D (X05-503X-XX)
VR-3080 (X05-5030-10) CN1 CN4
DE-EMPHASIS
S1 CH. SPACE
Rch 2
Lch 1
PHONO
CD1
Rch 4
Lch 3
RECRch 2
Lch 1
PLAYRch 4
Lch 3
J1
J2
Lch 3
PLAY IN
Rch 4
REC OUT
Rch 2
Lch 1
VIDEO1
J3
Rch 4
Lch 1
Rch 2
Lch 3
Rch 6
Lch 5
1 R
3 L
FRONT SP.
A SP
J4
AV AUX
J63
(FRONT)
J91
PHONES
MD/TAPE
J11
J12
J13
J14
1
2
3
4
5
6
7
8
2
1
3
6
5
4
7
8
CD2/TAPE2
MONITOR
PLAY IN
Rch 4
Lch 3
REC OUT
Rch 2
Lch 1
VIDEO 2
PLAY IN
VIDEO 3
PLAY IN
VIDEO 4
PLAY IN
4 L
B SP
2 R
3
2 L
CENTER SP.
SURROUND SP.
1 R
J5
J67
(X09-6270-10)
(X09-627X-XX)
K,Y,M.X 24.5V/6
J 20V/4
SP.
Rch
Lch
AUDIO
S VIDEO
1.1Vrms/32J 1.3Vrms/32K,Y,M.X
PHONE
AUDIO
KRF-V7772D
VR-3080
WH61
E61
P3
E5 WH6 E6
E4E3 WH5
S2
CN5
S1
POWER
CN3
E9 WH9 CN7
VIDEO4
CD
COAXIAL
VIDEO2
OPTICAL
VIDEO3
DIGITAL IN
IR OUT
J83 LCD
REMOTE
J84 IN
DC12V 15mA
IR RECEIVER
J85
J82
REPEATER
OUT
IR
SL16
TEXT
S1
SYSTEM
CONTROL
VR-3080 (X08-2970-10)
KRF-V7772D (X08-297X-XX)
VIDEO
1
2J61
3
1
J62
2
3
OUT
MONITOR
REC
OUT
IN
PLAY
VIDEO1
PLAY IN
VIDEO2
PLAY IN
VIDEO3
VIDEO4
PLAY IN
FRONT
1
J2
2
4
3
6
5
R
L
PRE
SURROUND
R
L
CENTER
WOOFER
SUB
OUT
A2
A1
J1
J81
CONTROL SW
SYSTEM
CN10
WH2
E2
CN1 CN5
CN8 CN4
CN6 CN3 CN2 CN1
CN92CN91
WH53 E53
CN93 E54 WH54 E55
E91 WH91 E92
PLAY
VIDEO1
REC J65
OUT
IN
OUT
MONITOR
S VIDEO
J66
S VIDEO
PLAY IN
VIDEO2
PLAY IN
VIDEO3
VIDEO4
PLAY IN
CN64 CN61 CN62
CN63
J7
J7
J7
TUNER UNIT
KRF-V7772D(M,Y) TYPE
USED
(X09-62XX-XX) (A/5)
(X08- ) (H/10)
(X08- ) (B/10)
(X09- ) (B/5)
EXCEPT USED
USED
KRF-V7772D (M,Y) TYPE
KRF-V7772D
(M,Y) TYPE
(C/5)
(X09- ) (X09- )
(D/5)
(X09- )
(E/5)
KRF-V7772D(M,Y,X)
USED
MAIN UNIT
VR-3080/
USED
KRF-V7772D(Y) TYPE
(X08- )
(I/10)
(X08- )
FL DISPLAY UNIT
(D/10) (E/10)
POWER SW (TACT)
(X08- )
(G/10)
(F/10)
MAIN VOL.
(X08- ) (X08- )
IR LED
VR-3080/
KRF-V7772D
(C/10)
(X08- )
(X08- )
(J/10)
SURROUND UNIT
(X08-297X-XX)
(A/10)
(X05-503X-XX)
VR-3080
USED
VR-3080(K,P)/
USED
KRF-V7772D(Y,J)
KRF-V7772D(M)
USED
KRF-V7772D(X)
USED
KRF-V7772D(M,Y)
USED
KRF-V7772D/VR-3080
13
WIRING DIAGRAM
KRF-V7772D(K)COVER1,1( 99.10.2910:11 AM y[W 26

Q2
Q1
D1
Q11 Q10
IC3
D7
D16
D13
D11
Q9
Q8
Q12
Q6
Q3
Q4 D8
Q14
Q15
Q7
R75
C84
C92
C93
C88
R89
C91
C89
C90
C35
C83
C87
R32/W60
R29
C8
C58
C56
C57
C61
C60
C36
R43
R48
R66
R63
R62
R69
R67
R68
R18
R19
R34
R33
R20
C69
C63
W85
W59
W81
W86
C81
C5
R84
C6
C1
C2
C3
C82
C78
C75
C11
C12
C39
C25
C26
C24
C42
C41
C30
C22
C52
C45
C47
C50
C51
C18
C20
C43
C44
R55
R79
R56
R53
R54
R57
R51
R52
R49
R42
R80
R82
R11
R14
W56
R12
R15
R16
R17
R10
R4
R1
R5
R8
R9
R6 R7
R35
R39
R38
R23
R28
R25
R76
W83
R74
R78
R47
W84
R45
R46
W61
R27
C31
C76
C79
W51
R31
R36
W55
R83
C77
W62
R64
R65
R60
R59
R58
W52
R30
C80
R72C71
R73
C70
C34
C33
W82
C64
R37
W80
W54
R88
R85
C86
C85
R86
R87 C74
C40/R90
EB
EB
EB
EB
EB
EB
EB
EB
EB
EB
EB
EB
EB
18
16 9
E1
ANTENNA
CN1
D6
A1
IC1
D4
D3
D9
D5 IC2
CN2
J1
X05-5030-10 (J70-1284-01)
S1
ON
OFF
W5
W6
W7
W4
W19
W22
W21
W20
W14
W17
W10
W1
W3
AM RF
(G)
(W)
MPX.FIL.
FM
TUNED
FM DET MPX
AM STEREO
FM IF
PLL
VT
C17
W24
C28
C38
C29
C37
W9
W16
VR1
CF1
CF2
C10
W13
W23
CF3
L9
L2
R50
R44
R71
C49
C46
C72
C32
C14
C15 C67
C68
C55
W25
L3
C62
C66
C65
W2
W8
W11
W15
L1
C73
C7
R81
C27
C16
C19
C21
C23
L6
L7
L5
C48
R41
L4
R70
R40
R77
R61
C54
C59
C53
R2
X2
X1
151
1
15
16
30
1
2
1
11
12 22
8
1
14
ABDCE
2
1
3
5
7
4
6
Refer to the schematic diagram for the value of resistors and capacitors.
PC BOARD (Component side view)
TUNER UNIT
KRF-V7772D(K)COVER1,1( 99.10.2910:11AM y[W 27

D801
D802
Q460
Q461
Q462
Q256
Q255
Q351
Q353
Q352
Q251
Q156
Q252
Q254
Q253
Q354
Q455
Q454
Q456
Q458
Q457
Q356
Q355
Q451
Q453
Q452
Q459
Q151
Q154
Q155 Q153
Q152
D41
D803
D910
D911
Q11
D708
D61
D851
D852
D912
D501
D502
D611
D592 D591
D651
C701
C710
C709
C703
C801
C714
C37
C36
C267
C34
C32
C31
C253
C254
C54
C52
C255
C263
C264
C256
C257
C258
C305
C306
C309 C310
C3
C302
C268
C5
C8 C7
C6
C4
C291C292
C301
C145
C146
C147
C155
C156
C157
C148
C153
C154
R103 R104
R468
C158
C209
C202
C205 C206
C210
C57
C56
C58
C201
C167
C159
C163
C164
C168
C191
C192
C423
C411
C412
C410
C407
C408
C409
C420
C419
C605 C607
C613 C603
C601
C634
C623
C633
C61
C316
C101
C355
C65
C353
C102
C312
C110
C109
C311
C106
C105
C313 C314
C62
C368
C367
C392
C403
C404
C391
C357
C356
C364
C363
C358
D101
R726
R727
R728
R722
R723 R725R724
R739 R738
R741
R740
R737
R733
R732
R708
R710
R709
R711
R718
R719
R713
R712
R714
R742
R768
R770
R769
R771
R781 R780
R783
R782
R744
R745
R615
R614
R617
R612
R611
R618
R629
R628
R630
R622
R621
R784
R818
R820
R815
R791
R790
R786
R785
R787
R804 R800
R803
R164
R163
R166
R165
R161 R158
R157
R160 R173
R174
R170
R169
R156
R153
R152
R155
R154
R151
R145
R254
R253
R256
R255
R252
R251
R266
R269
R265
R258
R257
R264
R263
R186
R185
R184
R183
R201 R202
R31
R41
R40 R43
R42 R39
R36
R38
R37
R2
R1
R4 R3
R14
R13
R108
R107
R101 R102
R57
R56 R46
R45
R54
R53
R68
R67
R62
R61
R63
R270
R461
R460
R463
R462
R459
R456
R455
R458
R457
R465
R464
R454
R421
R414
R413
R416
R415 R427
R453
R452
R423
R422
R424
R604
R601 R603
R602
R412
R308
R307
R352
R351
R354
R353
R316
R315
R318
R283
R274
R273
R302R301
R285
R284
R286
R355
R402
R401
R385
R384R386
R409
R408
R411
R410
R407
R404
R403
R406
R405
R383
R366
R365
R364
R357
R356
R363
R358
R374
R373
R370
R369
R303 R304
R469
R141
R142
R143
R144
C907
C904
R945
R947
R946
R943
R940
R939
R942
R941
R948
R955
R954
R957
R956 R953
R950
R949
R952
R951
R925
R922
R936
R935
R938
R937
R934
R985
R984
R987
R986
R983
R982
R988 R989
R960
R959
R962 R961
R909 R916
R918 R917
R914
R911
R910
R913
C341
C342
C343
C354
C141
C142
R958
C712 R774
R748
R749
R750
R751
R752
R797
R796
R749
R747 R776
R743
R753
C705
R755 C706
R754
R544
R506
R507
R509
R528
R545
R525
R526
R527
R505
R74
C71
R71
R72
R70
C43
C44
C527
C525
C524
L52
R519
C528
C519
R518
C522
L51
C523
C518
C520
L83
C866
L84
R55 R44
R608
R610 R607
R609 R606
R524
C501
C502
R513
R543
R542
R541
C533
C853
C851
C852
C855
C854
C865
C863
C864
C862
R883
R861
C861
R515
R529
R872
R926
C903 R930
C901
R928 C902
R929
R906
R905
R904
C905
C911
R907
R908
R578
R573 R571
C573
C908
R903
R901
R902
R927
R931
R920
R932
R933 C904
R990
R992
R994 R996
R919
R963
R964
R965
R966
R967
R968 R969
R970
R971
R972
R973 R974
R975 R976
R977 R978
R979
R980
R991
R993
R995
R997
EB EB
EB EB
EB EB EB EB
EB EB EB EB
EB EB
EB
EB
EB
EB
EB
EB EB
EB EB
EB
EB EB
EB
EB
EB
EB
EB
R92
C92C91
R91
C600 R598
C597
R597 C598 C599 R591
C591
R596
C596
R599
R593 R594
R592
C592
R675
C663
R674
R686
R688
R687
R665
R664
C657
R666
C658 C666
R657
C654
R658
C655 R678
R659
R680
R679
R660
R653
R654
R671
R672
R677
C653
R646
C646
R643
C643
R642
C642
C671
C641
R641
R645
C645
C672
R644
C644
R649
C649
R648
C648
C673
R647
C647
R651
C651
C674
R650
C650 C652
R652
IC56
IC55
IC61
D452
D453
IC72
IC7
IC81
D853
D857
Q852
Q853
Q854
Q801
Q851
Q622
Q612
Q621
Q623
Q857
Q855
Q856
Q611
Q2
Q1
Q3
Q4
Q631
IC6
D854
D858
D861
D860
D1
D2
D705
D704
D703
D707
D706
D702
D701
D855
D856
IC1
IC27
IC32
IC21
IC37
IC41
IC11
IC1
IC31
IC13
IC12
IC15
IC91
IC16
IC26
IC36
IC51
IC3
IC52
IC57
IC71
Q501 IC54
D909
D804
Q904
Q905
Q907
Q911
Q906
Q901
Q903
Q902
(J70-1297-01)
WH54
WH91
WH91
WH53
E95
E96
E57
IC5
IC62
J82
IC42
E54
E53
Q571
Q572
A2A1
J83 J81
J85
J62
J61
J1
J2
J84
D574
D571
D907
D903
D901
D902
E92
E91
E1
D906
A91
D904
D905
CN92
CN93
S1
CN61
CN91
CN4
CN1
CN3
CN2
CN10
S93
S92
S91
S94
S95
S96
CN5
VOLUME
TONE CONT.
MI-COM
CODEC
VIDEO SEL
CONFIGURATION
INPUT AMP.
INDICATION
WH9
E9
J91
P9
CN63
CN62
S97
E55
WH54
AUX INPUT
J67
WH61
E61
J63 D908
VIDEO SEL (S) CN64
Q643
Q655
S1 DET
Q654
IC67
Q652
Q661
J65
IC65
Q641
Q642
Q653
Q651
C
IC66
Y
VOLUME
CONTROL
X08 G/10
X08 H/10
S-VIDEO VIDEO L R
AUDIO
X08 F/10 X08 C/10 IN
PLAY PLAY
IN IN
PLAY
PLAY
IN OUT
REC MONITOR
OUT
VIDEO4 VIDEO3 VIDEO2 VIDEO1
S-VIDEO
PHONES
X08 D/10
X08 J/10
X08 E/10
X08 B/10
X08 I/10
X08-2970-10 A/10 CONTROL
SYSTEM XS8 SL16 TEXT
SL16 CD1 VIDEO4 VIDEO3
DIGITAL IN
VIDEO2 IN
PLAY PLAY
IN PLAY IN PLAY IN REC OUT MONITOR OUT
VIDEO4 VIDEO3 VIDEO2 VIDEO1
SUB
WOOFER SURROUND FRONT
CENTER
PRE OUT
L81
L82
C856
C858
C857
C708
C704
C711
C713
C38
C39
C35
C20
C19
C10
C266
C212
C265
C9
C307
C124
C123
C121 C122
C308
C269
C270
C277
C278
R113
R114
C320
C207
C208
C55
C211
C59
C165
C166
C178
C169
C170
C177
C514C515
C517
C510
C415
C421
C422
C416
C417
C418
C636
C632
C521
C526
C60
C72
C317
C318
C112
C111
C107
C108
C369
C365
C366
C63
C370
C377
C378
C64
R729
R721
R730
R736
R735
R706
R701
R704
R703
R702
R705
R717
R720
R716
R715 R767
R766
R763 R762
R765
R764
R777
R773
R775
R759
R758
R761
R760
R757
R756
R637
R634
R633 R636R635
R616
R613
R632
R627
R626
R623
R817
R819 R816
R813 R812
R814
R853
R852
R855
R854
R851
R789
R788
R806
R805
R811
R807
R801
R802
R856
R880
R863
R862
R866
R864
R858
R857
R860
R859
R867
R877
R876
R879
R878
R869
R868
R871
R870
R159
R175
R168
R167
R132
R131
R176
R211
R210
R212
R267
R268
R209
R187
R189
R188
R182
R181
R206
R205
R208
R207
R190
R126
R32
R34
R33
R26
R25
R35
R7
R6
R9
R8
R5
R16
R15
R18
R17
R11
R10
R12
R106
R105
R123
R122
R125
R124
R121
R110
R109
R112
R111
R73
R60
R59 R66
R65
R504
R503
R502
R501
R419
R418
R420
R417
R426
R425
R508
R577
R572
R605
R517
R516
R521
R310
R309 R312
R311 R305 R306
R320
R319
R281
R276
R282
R275
R290 R289
R288 R287 R390 R389 R388
R387
R368
R367 R375
R382 R381
C532
R530
W1
C319
R128
R127
R129 R130
C915
R924
R921
R923
R915
R912
C906
C531
R313
R314
L1
R64
R58
L53
L54
124
13
12
24
13
12
1
124
13
12
B
EB
E
EBEB
E
BE
B
EB
BE
B
E
BE
EB
BE
BEBE
EB
BEBE
BE
BE
1
3
5
4
EB
EB
EB
EB
EB
EB
EB
EB
T
G
R
SGND
BUSY
SDATA
GND
SGND
BUSY
SDATA
GND
DSW HLHLHL
DSP
12.288MHz
12.5MHz
3.64MHz
LSch
GND
SI
SO
CK
CSA
CSB
DTS DIGITAL
DOLBY
INDICATOR
CLIP
SPEAKER A
SPEAKER B
STANDBY
DISPLAY
MODE
SELECTOR
INPUT
5.0MHz
RSch SWch
MUTE
J83 J84
ED1
X72
X71
R510
R467
R466
R511
R522
R520
R49
R48
R47
R50
R75
R52
R51
R865
R808
R882
R881
R619
R631
R580
R638
C376
C375
C275 C276
C176
C175
C572
C571
C513
C516
C455
C456
C602
C608
C609
C604
C606
C406
C413
C402
C405
C414
C453
C454
C451
C452
C611
C802
C804
C631
C635
C621
C624
C401
C152
C161
C151
C103
C104
C172
C162
C171
C18
C33
C17
C2
C1
C51 C53
C45
C40
C41
C304
C351
C303
C352
C372
C371
C361
C362
C272
C251
C252
C203
C204
C261 C271
C262
C612
C622
C803
X91
D572
R981
R898
1
13
R900 R899
C457
C910
C900
C459
C458
TS
R
S
R
T
X51
CchRchLch
MUTE CONT
D573
17
18
9
16
1
13
IGO
1
51
3
TEST PIN
15 1131 21
IGO
116
1
7
5
1
4
1
1
4
1
7
17
31
62 1
14
58
58
14
41
58
5
8
14
14
85
I
G
O
28 15
141
8
5
41
18
16 914
58
14
58
30 1
31 100
81
50 51 80
14
58
14
58
14
58
23 33
1
11
12 44
34
22
17
8
14
16 9
18
13
45
41
85
80
81
50
51
1
30
31 100
114
15 28
81
100
5031
1
30 51
80
1
16
32
17
I
G
O
54 81
31
16
1
1
16
31
P3
1
8
C659
16 1
B
B
R662
R690
R684
R683
R843
R842
E
1
7
R841
8
C695
14
R844
R676
R845
R656
E
C662
R668
R685 BE
C665
BE
R667
R663
EB
C682
C693
C679
C678
C681
C680
C677
R669
R661
R681
EB
EB
C656
C676
R670
C664
16
1
C661
R673
R655
EB
EB
C685 1
C684
R682
C683
9
8
16
C675 C686
C690
R695 R691 R696
C691
J66
R692 R697
C692
R693 R698
8
9
R694
R699
C694
B
B
E
E
FHJLNGIKMO
2
1
3
5
7
4
6
Refer to the schematic diagram for the value of resistors and capacitors.
PC BOARD (Component side view)
SURROUND UNIT
15 16

CN9
CN12
CN10
CN11
WH16
Q82
IC1
Q97Q98
Q100
Q99
Q79
Q80
Q5
Q3
Q10
Q9
D17
D18
D16
D14
D15
D19
D37
D35
D20
D25
D13
D5
D4
D3
D10
D30
D6
IC3 IC2
Q21
Q14
Q15
Q24
Q23
Q22
Q8
Q4
Q13
Q12
Q11
Q31 Q71 Q73
Q63
Q54
Q61
Q84
Q83
Q85
Q87
Q86
Q41
Q42
Q34
Q32
Q33 Q52 Q53Q51
Q43
Q44
Q45
Q26
Q46
Q30
Q27
Q28
Q29
Q65
Q67
Q69
Q50
Q47
Q48
Q49
Q7
Q25
IC8
J4J3
E3
E5
D77
D78
D76
D74
D75
D98 D99
D96
D97
D100
D106
D95
D81
D82
D79 D80
D90 D93
D94
D91
D92
D73
D38
D36
D52
D51
D57
D34
D23
D22
D21
D32 D31
D24
D53
D61
D60
D59
D72
D71
D62
D58
D56
D55
D54
D108
D8
D7
D12
D11
D101
D9
D33
D102
D103
D1
D2
IC5
IC4
J2
J1
Q2
Q1
Q89
D109
Q105 Q107 Q101 Q103 Q109 Q110 Q102 Q104 Q106 Q108
WH2
J14J13J12J11
WH6
WH5
CN6
D29
Q6
Q16
Q88
CN5
J5
CN7
Q18
CN3
J10
CN21 CN25 CN24
CN23 CN22
CN4
WH7 WH17
CN8
J7
WH18
WH11
P4
WH12
WH19
WH8
Q81
D107
E2
P5
D28
D27
D26
Q17
D105
CN1
P6
D104
+5.6V
DC PROTECT
Rch Cch Lch
LSch
MUTE CONT OFF
FAST
-17V +17V
+8V
BUFFER REC AMP
SELECTOR
INPUT
AMP
PHONO
WH4
WH3
S1
WH6
CN16
CN18
E6
CN17 CN15
E4
CN13
WH5
CN14
WH15WH14 WH19 WH13
S2
WH17WH16 WH18
WH13
WH11 WH8
WH15
WH7
WH14
WH12
X09 C/5 X09 D/5
X09 B/5
E/5
X09
X09-6270-10 A/5 (J70-1293-01)
POWER
CD1PHONO REC
OUT IN
PLAY
MD/TAPE1
PLAYREC
OUT
CD2/TAPE2
IN
MONITOR VIDEO1
OUT
REC IN PLAY PLAY
IN
VIDEO2
IN
VIDEO3
PLAY IN
VIDEO4
PLAY
R
A
L
B
RL
FRONT SPEAKERS
SURROUND SPEAKERS
RLC
CENTER SPEAKER
AC OUTLET
IDLE.ADJ. IDLE.ADJ. IDLE.ADJ. IDLE.ADJ. IDLE.ADJ.
LIMTER
PROTECT.
RSch
ORG
BLU
W175
K6
R234
R371
R372
R373
R361
R149
R150
R147
R148
R241
R347
R349
R236
R235
R182
R181
R162
R221
R220
R219
R228
R233
R374
R227
R161
R222
R248
R249
R343
R119
R122
R121
R120
R327
R321
R319
R250
R341
R335
R333
R141
R136
R243
R142
R242
R144 R143
R133
R128
R127
R247
R135
R244
R134
C331
C132C232
C131 C231
W6
C218
C217
C242
C341
C317
C352
C241
C141
C142
C117
C118
W95
C143C144
C381
C380
C56
C168
C167
C350
C172
C351
C169
C353
C55
C113
C123
C124
C50
C49 C114
C48
C102
C101
C47
C3
C4
C194
C195
C201
C7
C301
C41
C8
C16
C214
C213
C202
C15
C224
C223
C313
C42
C323
C171
C191
C371
C372
C161
C182
C368
C367
C374
C166
C65
C66
C107
C106
C104
C105
C208
C111
C108
C51
C103
C52
C53
C206
C207
C54
C112
C303
C311
C221
C222
C46
C1
C204
C45
C307
C122
C212
C62
C211
C2
C205
C321
C121
C305
C203
C6
C44
C43 C325
C315
C190
C216
C215
C226
C225
C5
C61
C115
C125
C126
C116
W23
R156
R157
R90
R155
R255
R256
R158
R355
W57
C11
C12
W83
C155 C156
C154
C152
C153
C79
C158
C157
R110
R204
R205
R193
R191
R201
R112
R111
R202
R203
R213
R212
R211
R216
R215
R214
R109
R207
R206
R210
R209
R208
R172
R116
R115
R118
R117
R139
R140
R137 R138
R129
R130 R126
R125
R124
R123
R165
R167
R163
R164
R170
R171
R168
R169
R145
R146
R114
R113
R154
R353
R151
R152
R217
R153
R351
R345
R360
R370
R363 R362
R325
R323
R317 R329
R339
R337
R383
W129
R392
R391
R378
R376
R375
R379
R382
R381 R380
R315
R237
W126
R238
R245
R240
R239
R224
R223
R218
R225
R230
R229
R226
R305
R303
R301
R307
R313
R311
R309
R252
R251
R246
R253
R261
R254
R108
R41
R40
R39
R42
R45
R44
R43
R34 R33
R32 R35
R38
R37
R36
R55
R54 R53 R56 R59 R58
R57
R48
R47
R46
R49
R52
R51
R50
R31
R10 R9
R8
R11
R14 R13
R12
R3
R2
R1
R4
R7
R6 R5
W109 W108
R24
R27
W107
W47
R28
W11
R16
R15
W18
R23
R22
R93
R91
R92
W124
R94
R106
R104
R105 R107
R65
R99
R102
R98
R101
R60
R63
R96
R95
R103
R64
C192
C193
C335 C333C236
C134C133 C136C135
C233
C234
C235
C14 C13
W142
C188
R190
W96
P1
K1
K3
K2 K5
K4
W200
W131
W149
W210
W137 W144
W156
W112
W162
W161
W113
W189
W151
W152
W184
W54
W145
W26
W150
W167
W90
W28
W185
W61
W134
W165
W14
W15
W215
W16
W44
W214
W166
W136
W157
W196
W1
W48
W50
W31
W34
W3
W127
W132
W81
W62
W64
W128
W49
W55
W19
W52
W21
W67 W69
W63 W66
W80
W4
W8
W5
W37
W42
W36
W76
W25
W71
W123
W70
W60
W199
W115
W114
W174
W188
W141
W106
W51
W12
W77
W143
W82
W209
W181
W172
W160
W197
W204
W17
W211
W212
W169
W20
W190
W206
W208
W194 W207
W205
W203
W87
W89
W92
W110
W97
W104
W102
W94
W118
W117
W116
W122
C382
R385
R386
R387
W68
W182
W148
W130
W138
W105
W86W75 W121W56 W111
W171
W158
W101 W103
W74
W99
W59
W65W41
W100
W91
W79
W40
W43
W24 W58 W85W72W38
W2 W13
W93
W30 W53
W32
W9
W10
W139 W146
W153
W163 W168
W133
W140
W147
W154 W159 W164W170
W120
W178
W191
W180 W195
W202
W179
W192
W193
W88
W7
W22 W39
W98
W78
W73
W45
W46 T1
BRN
BLK BLK
RED
BLU
RED
RED
HOT
COLD
WHT
POWER
SUPPLY
F1
F2
LSch
W84W177
C227
C173
C164
C127
C327
C128
C228
C30
W125
W35
W29
C165
C163
R159
R192
C129
C229
C329
W186
C130
R21
R69
R67
R68
R77
R75
R70
R76
R100
R61
R62
R97
C184
C28 C24 C23
C32 C27
C31
VR1 VR4
VR5 VR2VR3
R196
W183
W176
W173
W135
R194
R384
C189
C29
W213
C183
C170
L3
L4
L1
C9C10
C149
R83
R74
R73
R84
R29
L2
R85
L5 C181
R88
C147
C119
C145
C309 C319
C345
C349
C150 C347
C148
C120
C146
C110
C210 C250
C248
C220
C246
C247
C249 C209 C219
C245
C18
R66
C17
R30
R17
R18
C59
C60
R82
R25
R26
R81
R71
R72
C57 C58
W33
R86
R87
C162
C109
R197
R89
W155
R263
W187
C369 C373
C159
C230
Lch Rch RSch
P3
ORG
BLU
W27
W119 R160
C160
C151
ORG
F4
F5
VIOL BRN YEL
120V
W201
F3
WHT
W198
BLU RED
135
YEL
RED BLK
ORG
RED
67
VIOL
BLK
511515155115
Cch 1515 5115
1
3
1
2
1
2
1
2
1
2
1
2
1
8
9
1
21 1
1
9
11
1
1
13
15
1
71
1
11
I
G
O
2
1
114
15
28
15
14 8
5
414
58
1
1
28
18
7
1
B
BE EB EB
BB
B
EB
B B
EB
B
BE
BE
BE
BE BE
B B
E
E
E E
B
B
E
E
EB
EB
E
B
E
B
E
E
E
E
B
B
BE
E
E
E
B
B
BE
BEBEBEBE
E
E
B
E
E
B
B
B
E
B
B
B
E
E
EB
E
E
D
ESG
B
EB
EBEB
EB
E
B
BE
E
BBE
B
E
BE
E
B
BE
EB
EB
BEBEBEE
BBEB
E
E
B
B
E
BE
AUDIO UNIT
PQSUWYRTVX
2
1
3
5
7
4
6
Refer to the schematic diagram for the value of resistors and capacitors.
PC BOARD (Component side view)
1817
KRF-V7772D(K)PCB1,2P( 99.10.2910:24AM y[W 2

ACEGIBDFHJ
2
1
3
5
7
4
6
TR3
1T362
: HVU202 or
: 2SC2413
D1-3
TR2,3
: 2SK302
: 2SC2714TR1
FET
D3
TR2
OSC
BUFFER
OSC
DISTORTION(ST)
D1
FET
D2
RF AMP TR1
MIX
GND
FM 75
J1
FM FRONT-END
Q1
D1
LEVEL
FM TUNING
Q3
Q4
EMPHASIS
75uF: ON
50uF: OFF
B
PLL
D4
FM +B
Q14
FM MPX
AM SYSTEM
CN2
MUTE
CN1
FM DE MPX
Q2
IF AMP
D3
D8
D9
Q10
Q11
Q12
DRIVE
T.MUTE
D5
IC1 :
IC2 : LC72131
Q1,3,4,8,9 : 2SC4177(L5,L6) or
Q2,12,14,15 : 2SA1611(M5,M6) or
Q10,11 : 2SD1757K
D1 : DA204U or
D3,6 : RD8.2ES(B2) or
D7,8,13,16 : MA111
RD5.1ES(B2) orD4 :
RD3.3ES(B2) orD9 :
RD2.7ES(B2) orD5 :
A1 :
D13
AM ANT
KRF-V7772D (X05-503X-XX)
-CN4
X09-A/5
3/4
GND LINE
SIGNAL LINE
B LINE
B LINE
MTZJ3.3(B) or
MTZJ2.7(B) or
MTZJ8.2(B) or
MTZJ5.1(B) or
MA143A or
2SC4116(Y,GR)
2SA1586(Y,GR)
1SS302
VR-3080 (X05-5030-10)
TR3
D4 : HSU277 or
1SS356
1T363
: HVU202 or
: 2SC2413
D1-3
TR2,3
: 2SK302
: 2SC2714TR1
FET
D3
TR2
OSC
BUFFER
OSC
DISTORTION(ST)
D1
D4
FET
D2
RF AMP TR1
MIX
Q15
AM +B
E
DECODER
AM STEREO
BUFFER
D16
D7
D
Q8
D6
Q9
S1
CH.SPACE
DE-EMPHASIS
LA1837
IC3 MC13028AM:
GND
GND
ANT2
ANT1
4
3
2
1
100
100
R12
680K
R11
100K-
680-2.2K
R6
8P
0-8P
2-6P
C20
150P
R9
L6
C12
R10
10K
C15
27P
27P
C14
C16
3.9K
C13
R8
10K
R7
C17
100P 8OUT
IF-OUT 7
C10
33K
L3
0-100
100K
0-8P
C18
C1
180P
L1
L2
10P
R1
C2
C6 4P
C3 0-8P
1.2M
470K-
1000P
180P
0.1
C9
68
R14
C19
C5
R5
L5
L4
3P
R13
680
C7
27P
R3
R2 C4
R4
33K
0.1
+B 6
VT
IFT
C8
0.1
5
OSC
270
R44
100
0.01
C3 33
3.3K
R7
820
680
R4
CF1 CF2
R12
100
1/4W
4P
C75
R41
100K
L1
10K
R42
0.01
C36
1uH
L2
S-METER
DRIVE
TUNING
FM AM/FM
S-CURVE
1
2
FM IF
S-METER
FM
DET
IF-BUFF
3
4
GND
5
AM
OSC
BUFF
ALC
30
29
SD
COMP AM
AM IF
RF.AMP
AM
MIX
REG
28
AM
AGC
27 26
VCC
8 6 7
DRIVE
STEREO
9
12 10
11
13 15
14
MUTE
DET
25
24
23 22
38K304KHz
VCO FF 2
19K
FF
DECODER
ANTI-BIRDIE
P-DET
21
SW
STEREO
20
19
PILOT
DET
FF
19K 8
18 17 16
47P
0.047
C20
10u10
C19
+
0.047
C22
3.3u35
C21
+
R25 C26
10u50
C23
+
4.7u25
C27 C25
VR1
10K
6.8K 6.8K
2.2u50
C29
+
2.2u50
C28
+
C31
C79
C30 C80
10u50
C38
+
10u50
C37
+0.01
C34
C33
0.01
560
R30
47K
R31
0.047
C12 22
R16
R1433K
R15
10u50
C14
+
R17 3.6K
C45 22P
+
C15
1u50
3.9K
3K
R18
0.47u50
C16
+
R19
C17
1u50
+
8.2K
L4
1
C81
L3
0.047
C11
47u16
C10
+
21
R23
47P C76
C41
47P
21
C
DIVIDER
REFERENCE
3 2
1
4
5
2
22 14
SWALLOW COUNTER
1/16,1/17 4bits
ON
DETECTOR RESET
DATA SHIFT REGISTER LATCH
6 7 8
10
9
11
POWER
CHARGE PUMP
PHASE DETECTOR
UNLOCK
20 19 18 17 16
UNIVERSAL COUNTER
12bits PROGRAMABLE
DIVIDER
1/2
15 13 12
7.2MHz
X1
C42 22P
1.2K
R59
R58
12K
R49 10K
R48 1K
R47 3.3K
R46 3.3K
R45 3.3K470P
C44
47u16
C48
+
10u50
C46
+
1000P
+
0.022
R531K
R54
R51
5.6K
100
R52
470
R50
C47
1/4W
1K
R56
100P
C52 1K
R57
470P
C51
100P
C50
33K
R55
R43
220
VCC
2
1
4
3
E1
C1
3300P
C18
L5
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
DET
S-LEVEL
SD
STEREO
Rch
GND
Lch
+15V
-15V
T. MUTE
PLL DT
PLL CLK
PLL CE
PLL DO
CH.SPACE
R82
2.7K
1u50
C72
+
47u16
C73
+
R1
R5
R6 220
0.01
C5 R11
C6
0.01
390
R9 1K
R10
C82 0.01
C7 47u16
+
150
R81
1W
4.7u50
C32
+
W82
W83
820
8.2K
R75
1K
1.8K
R76
R78
R77
47K
R74
W56
6
3
5
4
3
5
4
6
R84 3.3K
1K
1K
R72R73
C78
C49
R85
33K
33K
R86 R87
33K
3300P
C85
3300P
C84
56K
R88
3300P
C88
33K R89
R20
C91 1
R79 3.3K
R33
R34
W60
VREF T.METER
0-01
0-21
GENERAL MARKET
AUSTRALIA J
Y
UNIT No.
DESTINATION
COUNTRY ABB. C26,
DBE 78 31
0.022
C30,
YES
R29
B
+B
JAPAN X
PX M
C74
1000P
L72-0596
(MS2)
CF1,2
W02-2622
A1
ABB.COUNTRY
U.S.A.
CANADA
DESTINATION
NO
P
K0-10
UNIT No. DBE W56
NONO
R29
4.7K
R23 78
YES
C26, S1
NO0.033 NO
31
C30, C77
B I/F
+B
+B
+B
+B
+B
+B
+B
+B
+15V
+15V
+15V
15V
+15V
+B
+B
+B
+B
+B
+B
+B
+15V
+15V
+15V
GND
GND
ANT2
ANT1
4
3
2
1
100
100
R12
680K
R11
100K-
680-2.2K
R6
8P
0-8P 2-6P
C20
180P
R9
L6
C12
R10
10K
C15
18P
27P
C14
C16
3.9K
C13
R8
10K
R7
C17
100P OSC
IF-
C10
33K
L3
0-100
100K
3-10P
C18
C1
180P
L1
L2
15P
R1
C2
C6 4P
C3 3-10P
1.2M
470K-
1000P
180P
0.1
C9
68
R14
C19
C5
R5
L5
L4
5P
R13
680
C7
27P
R3
R2 C4
R4
33K
0.1
VCC 6
VT
IFT
C8
0.1
5
7
OUT
8
+B
1.2K
R60
R61
12K
1000P
C55
C56
R63
C65
10u10
10K
C63
0.47
R70
C62
10u10
W86
C66
10u10
W81
+
W11 0.01
C64
DETECTOR
+
7 8 6
QUALITY
SIGNAL
+
4 5 3 1 2
AM STEREO
DETECTOR
1/8
IF
AMP
PILOT
DETECTOR
R69
680K
VCO
AGC
10 9
11
R71
220
13 12
14
15 16
C67 C68
0.47u50
10u50
C69 0.22
++
C61 33P
47u16
C59
C57 2200P
R66 9.1K
C58 2200P
R67 9.1K
R68
47
+
C60 10P
X2
5.6K
R62
+
10u50
R64
20K
C54
5.6K
0.1
0.1
C53
20K
R65
100P
C77
FM: 100kHz 75uS
AM: 10kHz
AM: 9kHz
FM: 50kHz 50uS
1K
R29
R8
33
100
R27 R28
C24
33K33K
1000P
C92
1000P
C93
0.01818K
680
R90
W61
2.2K
R53 C24
330P
C25
180P
C49
2.2u50 1000P
80
C79,
0-71 NO
NO
YES
YES
NO
YES
NO
R25
560
2.2K
R53
0.01
C24
330P
C25
330P
820P
YES
NO 4.7u50
2.2u50
C49
NO
YES
C77
1200P
1500P
C79,
80
W02-2622
A1
W02-2621 (MA5)
CF1,2
L72-0531
S1W56
YESYES
NO NO
YES
R25
4.7K
6.8K
R23
4.7K
1/4W
Q10,11
1K
R83
27P C43
+B
+B +B
+B
+B
+B
A1 (W02-2622-05)
(K,P,Y,M,X) TYPE
IC2
IC1
TUNER UNIT (X05-503X-XX)
A
KRF-V7772D (1/4)
VR-3080 (1/4)
A1 (W02-2621-05)
(J) TYPE IC3
3.6V
(3.6V)
8.2V
(8.2V)
(0V)
0V
(8.2V)
8.2V
(1.3V)
1.3V
(2.3V)
0V
(0.2V)
0V
(7.0V)
7.0V
(9.2V)
8.8V
(0V)
4.3V
(3.9V)
7.0V
(1.7V)
1.8V
(3.6V)
3.7V
(1.3V)
0V
(1.4V)
0V
(0.9V)
3.6V
(3.4V)
3.4V
4.3V
(4.3V)
(4.3V)
4.3V
4.3V
(4.3V)
(3.4V)
3.4V
(2.9V)
2.9V
3.7V
(3.6V)
(3.6V)
3.7V
2.8V
4.0V
1.1V
5.2V
2.6V
0V
0V
0V
2.6V
0V
0V
0V
4.3V
(0V)
11.3V
(11.3V)
0V
7.2V
0V
[0.6V]
0V
0V
0V
1.8V
10.6V
11.2V
11.3V
[75uS]
50uS
0V
0V
(0V)
0V
1.1V
(3.6V)
3.6V
(3.6V)
3.6V
(5.0V)
0V
8.2V (8.2V)
(3.6V)
3.7V
6.2V
1.1V
6.8V
1.3V
-2.2V
0V
0V
0V
-2.2V 3.4V
5.0V
0V
-2.2V
10.7V
11.4V
11.3V
0.9V
8.1V
1.0V
0.7V
0V
1.0V
0V
1.0V
0.4V
0.4V
0.9V
1.0V
0.9V
0V
8.1V
1.6V
0.7V
1.6V
1.6V
1.6V
8.1V
0.9V
KRF-V7772D/VR-3080
Y05-3850-10
MODE CARRIER MODULATION ANT INPUT
FREQUENCY DEVIATION
FM 98MHz 1kHz STEREO 67.5kHz 7.5kHz(Pilot) 60dB
AM 1000(999)kHz 400Hz MONO 30% MOD 60dB
CAUTION: For continued safety, replace safety critical components only with manufactur-
er's recommended parts (refer to parts list). indicates safety critical components. For con-
tinued protection against risk of fire, replace only with same type and rating fuse(s). To
reduce the risk of electric shock, leakage-current or resistance measurements shall be car-
ried out (exposed parts are acceptably insulated from the supply circuit) before the appli-
ance is returned to the customer.
The DC voltage is an actual reading measured with a high impedance type voltmeter as the
AM/FM signal generator is specified to the conditions as shown in the list below. The mea-
surement value may vary depending on the measuring instruments used or on the product.
The value shown in ( ) is actual reading measured in the AM mode.
KRF-V7772D(K)SD2,2P( 99.10.2910:17AM y[W 2

KLNPRTMOQS
2
1
3
5
7
4
6
33 32 31 30 29 28 27 26 25 24 23
22
21
20
19
18
17
16
15
14
13
12
1
2 3
4
5 6 7 8
9
10
11
34
35
36
37
38
39
40
41
42
43
44
SDIN2
SDIN3
CLKOUT
ERR
XTO
XTI
DEM
AOUT6(SW)
AOUT5(C)
AOUT4(RS)
AOUT3(LS)
AOUT2(R)
AOUT1(L)
AGND1
VA+
AGND2
FILT
CMOUT
AINAUX
AINIL
AINIR
FREQ1
RX4 HOLD CCLK CDOUT CDIN CS SPI PDN AUDIO AC3 FREQ0
SDIN1
SDOUT2
SDOUT1
LRCK
SCLK
DGND2
VD+
DGND1
RX1
RX2
RX3
8 7 6 5 4 3 2 1
GND
2Rx/Cx
2Cx
2Q 1Q
ICLR
1B
1A
9
10
11
12 13
14
15 16
2A 2B 2CLR 2Q 1Q 1Cx 1Rx/Cx VCC
C71
0.1 R71
100K
10
R75
1/4W
0.1
C72
47K
R72
3.3K
R74
OUT
GND
VDD
2
3
1
VDD 3
1
OUT
GND 2
47u10
C51
+
4700P
C59 1K
R58
R64
1K4700P
C63
22P C62
82
R63 82
R57
22P C58 47u10
C53
+10
R51
10
R52
R59 8.2K
C60 10P
R60 150K
R61
1.8K
1.8K
R67
C64 10P
R65 8.2K
R66 150K
0.1
C55
10
R50
1/4W
1.8K
R55
R46
3.3K
R32
47K
33P C35
4700P
C61
R62
1K
R68
1K
1K
R56
C57
4700P
R54
1K
R53
1.8K 4700P
C56
3.9 1/4W
R48
0.1
C39
46
67
65
66
58
48
55
R39 3.3K R38 3.3K R37 3.3K
54
R43 47K
R44 47K
C36 1000P
R42 47K
R40 47K
R41 47K
R70 3.3K
C37 1000P
R45
3.3K
10u50
C17
+
10u50
C18
+
1K
R26
1K
R25
0.1
C40
+
0.22
C31
C32 0.022
3K
R31
C34 0.01
C33 1u50
+
C19 2200P C20 2200P
VD+
1
2
3GND
VDD 5
4
10 1/4W
R520
10K
R530
C521
0.1
R33 220
R34 220 L1
R35 220
59
RAMD3
RAMD7 79
80
VSS1
RAMD5 77
78
RAMD6
75 76
RAMD4
67
RAMD1 73
74
RAMD2
71 72
RAMD0
69 70
VDD1
RAMA2
68
SCK
SI
63 65 66
SO
CSA
64
CSB
RAMA3
61 62
TEST
IC
60
RAMA4
VSS2
58
RAMA5 RAMA6 57
SDBCKO
SDWCKO
81
82 VDD2
83
84 SDBCKO
92
88
86
85 SDIA0
SDIA1
87 RAMA1
RAMA0
90
89 RAMWEN
RAMOEN
91 VSS
VDD2
94
93 IPORT7
IPORT6
95 IPORT5
IPORT4
96
97 IPORT3
IPORT2
98
99 IPORT1
IPORT0
100 VSS
SDOB2(LS,RS)
SDWCK1 49
50
VSS1
SDOB0(FL,FR) 47
48
SDBCK1
45
46
SDOB1(C,SW)
37
RAMA8 43
44
RAMA7
41
42
RAMA9
39
40
VDD2
VSS2
38
OPORT7
OPORT6
33
35
36
OPORT5
OPORT4
34
OPORT3
OPORT2
31
32
OPORT1
OPORT0
VDD1
RAMCEN
1
2VDD1 3
4RAMA16
12
8 6 5RAMA15
SDIB0
7SDIB1
SDIB2
10
9XI
XO
11 VSS1
AVDD
14
13 SDIB3
TEST
15 TEST
OVFB
16 17
DTSDATA AC3DATA
18
19 SDOB3
CPO SDOA1
20
21 AVSS
VDD2
22 23 SDOA2
24 SDOA0
RAMA14
25 28 27 26 30
29
VSS2 RAMA12 RAMA13 RAMA11 RAMA10
SURENC 56
VDD2
53
MUTE
KARAOKE 54
55 51
NONPCM
CRC 52
+5V
77
76
70
89
61
64
58 88
59
75
74
73 72
78
86
79
4
3
87 43 42 25
29
28 26 27
79
78 77 75 76
74
73 72
82
83
A1
D3 15
16
VSS
D1 13
14
D2
11 12
A0
3
A3 9
10
A2
7 8
A4
5 6
A5 A6
4
A7
A12
1 2
A14
A16
NC
D5
17 18 D4
19
20 D6 28
24
22
21 D7
D8
23 CSI
A10
26 25 OE
A11
27 A9
A8
30
29 A13
WE
31 CS2
A15
32 VDD
4
3
87
86
89
88
59
58
61
64
70
67 68 62 65 63
R509 47K R508 47K
R528 220
R507 47K R506 47K R505 47K
70
R527 3.3K 60 R526 3.3K 59
29
28 26 27 25
42
43
44
C510
0.1
C533 100P C532 100P
C531 0.01
GND
OUT IN
R47 3.9
36
35
34
32
33
R529 3.3K
R610 3.3K
R608 3.3K
R609 3.3K
R607 3.3K
R502 100
R503 100
R504 100
3
2
1
4GND
VDD 7
8
6
5
R513
100
GND
3
4
2
1
6
5
VDD 7
8
0.1
C44
10u50
C45
+
0.1
C43
2.2
R49
1/4W
R36 220
1/4W
56P
C524
47P
C525
270
R519
22P
C528
39P
C519 220
R517
R516 1M
1000P
C520
39P
C518
47P
C522 560 R518
R515 1M
12.288MHz
L51
L52
22P
C527 C523
47P
X51
1/4W
1
R511
10u50
C515 0.1
+
IN
GND
OUT
C514
0.1
10u50
+
C501 0.1 C502 0.1
4.7 1/4W
R510
+3.3V
0.01
C517
10 1/4W
R522
R606 3.3K
50
49
L54
1uH
L53
10uH
14 8
97
56
13 12 11 10
123 4
1/4W1/4W
4700P
C65
220
R73
3.3K
R525
3.3K
R524
470P C526 10K
R521
R501
1M
3
2
81
6
547
R109
12K
R114
150
12K
R110
1K
R108
4.7K
R104
2
3
81
5
64
7
2.2u50
C104
+
R102
3.9K
R101
3.9K 2.2u50
C103
+
R103
4.7K R107 1K R113
150
C107 3300P
C108 3300P
100K
R105
100K
R106
2700P
C102 2700P
C101
1800P
C105
1800P
C106
0.022
C110 C109
0.022
0.01
C111
100P
C112
R111
22K22K
R112
C207 120P
C208 120P
R208
1.8K
R209 22K
R210 22K
R212
100
C211
C209
0.027
0.01
C212
100P
C210
0.027
3.3K
R201
+
47u25
C203 R205
3.9K R207 1.8K
C204 R206
+
47u25 3.9K
R202
3.3K
4700P
C201
4700P
C202 C206
8200P 8200P
C205
22K
R311
C304R302
4.7K 2.2u50
+
C302
6800P
7
R304 R308
4.7K 10K 5
C308 6800P 4
R312
100K
R306
0.012
C306
15K
6
8.2K
R310
R314
220
C318 C310
0.033
R301
2.2K
C301
2200P
C303
2.2u50
+1
100K
R305
1800P
C305
4.7K
R303 1.2K R307
10K
R309
2
38
C307 3300P
0.033
C309
R313
220
C317
7
4
6
5
R316 10K
1
R315 100
2
38
C312
100P
4.7K
R318 C311
100P
100
R319
100
R320
C314
100P
C313
100P
C316 22P
C319
C320
0.01
100P
0.01
100P
100
R211
VDDVDD
VDD2
VDD2
VDD1
VDD1
VDD2
VDD2
VDD1
AVDD
VDD2
+3.3V +3.3V +3.3V
+5V
+5V
+5V+5V
+5V
VDD
VDD
+3.3V+3.3V+3.3V
+3.3V+3.3V+3.3V
+3.3V +3.3V
+5V+5V
+5V +5V
+5V
+5V+5V+5V
+5V+5V+5V
+5V
+5V+5V+5V
+5V+5V
VDD
VDD
+5V
82
83
+5V
+5V+5V
+5V+5V
C513 C516
+5V
+17V
+17V
+17V+17V
+17V
+17V+17V
+17V
+17V+17V
+17V
84
84
34
33
32
44
31
32 33
C38
10u50
53
47
17V
17V17V
17V17V17V
17V
17V17V
17V
R69
2.2
39P
C66
39P C67
39P C68
39P
C69
R523 100
+5V
+5V +5V
+5V
IC3
IC51
IC52
IC7
IC56
IC57
IC5
IC55
IC54
(X08-297X-XX) (A/10)
SURROUND UNIT
0V
5.1V
0V
5.0V
4.4V
4.2V0V
4.1V 4.2V
2.3V 2.4V 0.8V
2.4V 0.8V
2.3V
0V
0V
0V
0V
0V
2.4V
4.9V
2.4V
2.4V
2.5V
2.5V
0.8V
4.9V
2.5V
4.9V
2.3V
1.9V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
5.0V
0V
0V
0V
4.7V
2.4V 4.9V
0V
2.4V
0V
2.4V
0V
4.9V
0V
2.4V
2.4V
0V
4.4V
4.6V
0V
0V
4.8V
0V
0V
0V
0V
0V
4.8V
0V
2.4V
0V
0V
1.9V
0V
4.9V
4.9V
1.9V
2.4V
4.9V
2.1V
2.2V
4.4V
5.0V
3.1V
0V
3.1V
1.8V
4.9V3.3V
4.9V
0.8V
1.9V
2.3V
0V
0V
0V
3.3V
3.3V
3.3V
0V
2.4V
2.5V
2.5V
4.5V
2.4V
4.9V
4.4V
4.8V 0V 0V
2.3V
4.9V
0V
0V
0V
0V
0V
0V
2.1V
2.1V
0V
0V
0V
2.5V
2.5V
2.5V
3.3V
4.9V
2.5V
2.5V
2.5V
2.5V
2.5V
0V
0V
3.3V
1.7V
0V
3.3V
2.5V
2.5V
0V
0V
2.5V
2.5V
4.9V
7.3V
16.9V
-16.6V
16.9V
-16.6V
16.9V 16.9V
-16.6V -16.6V
DIR
DIGITAL
AMP
CONVERTER
BLOCK DIAGRAM
: KRF-V7020D
BLOCK DIAGRAM
: KRF-V7020D
DAC A/D
DETECTOR
DIGITAL
DATA
D61
Q11
IC7
RESET
2
1
J1
VIDEO4
CD1
COAXIAL
IC6
(4/6)
IC6
(5/6)
(2/6)
IC6
(1/6)
IC6
DIGITAL(LS,RS)
DIGITAL(C,SW)
D2 D1
CLOCK
ON/OFF
CLOCK
AMP
SRAM
5V AVR
CONT.
CLOCK
Q501
3.3V
INVERTER
PRO LOGIC 3ST.)
(DTS,DOLBY DIGITAL
DSP
VIDEO2
OPTICAL
VIDEO3
DIGITAL IN
A1
A2
IC6
(3/6)
IC6
(6/6)
DIGITAL(FL,FR)
DIGITAL OUT
DIGITAL
DIGITAL
21KHz LPF
FLch
IC11
(1/2)
IC11
(2/2)
FRch
21KHz LPF
IC21
(1/2)
LSch
RSch
IC21
(2/2)
SWch
IC31
21KHz LPF
(2/2)
Cch
IC31
(1/2)
(2/2)
IC32
IC32
(1/2)
BUFFER
AVR
D501
D502
KRF-V7772D(K)SD2,2P( 99.10.2910:18AM y[W 3

ADUWYAAACVXZAB
80 79 78 77 76 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
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
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 26 27 28
29
30
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
20dB
AMUTE SW
SYNC BUSY
SYNC DATA
SYNC 8/16
FL CK
FL DI
FL DO
FL ST
FL RST
DSP IC
TEXT TX
TEXT RX
SCK
SI
SO
AVREF1
DSP CSB
DSP CSA
AVSS
DSP SURRENC
DSP NONPCH
CODEC AUDIO
NO USE
NO USE
CODEC FREQ0
CODEC FREQ1
DATA DET.
AVREFO
AVDD
DSPAC3
DSP DTS
CODEC AC3
CODEC ERR/OVR
CODEC CS
REM1
REM0
RESET
XT1
XT2
VSS
X1
X2
VDD
CE
VOL. CK
VOL. DA
VOL. ST
TONE ST
V MUTE
IR D0 IR D1 IR D2 IR D3 IR D4 IR D5 IR D6 IR D7 VDD TSW3 TSW2 TSW1 TSW0 RENC A RENC B NO USE T MUTE T CK T DA T D0 T CE VPP T SD T STEREO S1 V1 S1 V2 S1 V3 S1 V4 S1 AUX S1 OUT
AMUTE S
AMUTE MAIN
RELAY SPA
RELAY SPB
RELAY SPC&S
RELAY POWER
RELAY SECOND
PROTECTION I
PROTECTION V
Ir RECEIVER ON/OFF
SEL CK
SEL DA
SEL ST1
ATT3
ATT6
TAPE2 LED
IR RWR
IR REN
IR REQ
VSS
CODEC
DSP
X71
12.5MHz
35
34
33
32
46
48
47
49
50
R717
3.3K
C709 100P C710 100P
R721 47K R720 47K R718 47K R719 47K
R873 100K
53
54
55
60
59
58
62 63 65
R728 47K
R727 47K
R726 47K
R725 47K
R724 47K
R723 47K
R722 47K
R730 220 R729 220
98
99
97
D7
7
3
2
11
2
7
6
4
5
REQ
RER
REN
6
26
28
27 27
28
25
26
23
24
25
24
22
23
12
11
9
8
10
REMO
VDD
XOUT
XIN
14
13
WDO
GND
RST
17
D5
D6
D3
D4 19
20
21
18
D0
D1
D2
15
16
8
6
7
4
5
1
3
2
R715
3.3K
4700P
C711 R716
1M
5
4
3
2
1
CLK
SCK
SO
SI
GND
25 26 28 27
29
30
24
23
20
21
19
18 17
R815
47K
R714 33K
R713 33K
R711 33K
R712 33K
R820 33K
R818 33K
R710 33K
R775
3.3K
R819 3.3K R817 3.3K
1
2 3
4
5 7
6
8
R767 100
R766 100
R765 100
R764 100
R760 100
R761 100
R763 100
R762 100
R758 100
R759 100
R757 100
97
98
99
X72
3.64MHz 0.1
C708
C712
0.01
100
R756
R774
1M
C714 100P
15
14
C713 100P
R768 3.3K R770 3.3K
R705 10K
R708 47K
R706 47K
R704 47K
R703 10K
12
R701 10K
R702 47K
R771 10K
R769 10K
R773
R811 3.3K R812 3.3K
R814 470
R813 3.3K R816 3.3K
R709 47K
RST
VPP3
VDD2
1
31
4.7
R808
1
C703
R801
820
1K
R800
C804 100u10
+
0.047F5.5
C803
+
R806
1K
R805
10K
1K
R803
100K
1u50
C802
+
R802
10K VDDVDD
VDD VDDVDD
VDD
100P
C704
10K
R807
GND
OUT IN
0.01
C801
1/4W
74
73
75
C862
100P
L82 100uH
C858
330P
1K
R871
1000P
C857
1K
R868
R866 22K
1K
R867 R870
10K
4.7K
R869
R872
R863
1K
C856
0.082
L81 100uH
R865
470
1/4W
C861 100P
R861 47K
R862
1K
R883 1K
12K
R877
R879
1K
R876
2.7K
100
R878
22K
470 1/4W
R881
470 1/4W
R882
100P
C863
100P
C864
0.1
C866
C854
220P
C855
220P
R864
10K
100
0.01
C865
TX
RX
L83
L84
DATA
GND
BUSY
C853 0.1
SL16 XS8
78
68
69
220P C852 220P
C851
77
76
66 67
70
66 65 67
R777 470
R789 3.3K
R788 3.3K
R797 1K
R796 1K
R752 1K
R750 470
R751 1K
R747 3.3K
R748 1K
R749 1K
R746 3.3K
R772
C705 0.01
R753 10K R754 10K
C706 0.01
R776 3.3K
R744 3.3K
R745 3.3K
95
94
93
92
91
89
88
87
85
86
84
82
83
82a
81
80
79
R732 220 R733 220 R736 220 R735 220
R737 3.3K 71
72
R738 3.3K R739 3.3K 73
74
75
R742 3.3K R741 3.3K
96
75
74
73
1K
330
100K
R859
R860 100K
R855 100K
R854 330
R853 330
R851 100K
R852 100K
R856 100K
78
68
69
76
77
R880
R804
77
76
69
68
77 76 69
68
R857 R858
VDD VDD
VDD
10K
R743
R740 47K
+5.8V
+13.7V
+5.8V
+13.7V+13.7V
+13.7V
+13.7V
+5.8V+5.8V+5.8V
VDD
VDD
VDD
VDD
VDD VDD
VDD
VDD
VDD
VDD
VDD
VDDVDD
VDD
VDD
VDD
VDDVDD
AVREF
VDD
VDDVDD
VDD
44
Q853
VDD
+5.8V
+13.7V
+5.8V+5.8V
VDDVDD
VDD VDD
47K
R755
10K
100
17V
+17V
17V
+17V
17V
+17V
17V
+17V
IC71
IC72
IC81
5.1V
0V
0V
4.8V
0V
4.7V
4.9V
4.9V
4.2V
0V
0V
4.8V
0V
0V
0V
0V
4.9V
0V
4.6V
0V
0V
0V
0V
4.5V
4.9V
4.9V
0V
0V
4.7V
0V
0V
4.8V
4.7V
0V
0V
0V
0V
0V
0V
0V
4.9V
0V
5.1V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
4.9V
0V
0V
0.5V
0V
0V
0V
0V
4.9V
0V
0V
4.2V
0V
5.1V
5.1V
5.6V
5.6V
5.6V
5.6V
5.5V
4.9V
0V
0V
0V
0V
5.1V
0V
2.6V
4.9V
2.3V
5.0V
0V
5.0V
4.9V
4.4V
0V
0V
0V
5.1V
5.1V
0V
5.0V
0V
0V
0V
0V
0V
0V
0V
0V
2.3V
2.5V
5.1V
0V
5.1V
13.4V
13.4V
13.4V 0V
0V
0V
0V
13.4V
0V
4.8V
0V
0V
5.3V
0V
5.3V
5.3V
0V
D704
D703
D701
D702
u-COM
REMOTE
SYSTEM u-COM
TEST PIN
D708
D803
Q801
RESET
BACK UP CON.
D801
D802
RESET IC
IR OUT
J83
LCD
REMOTE
A
D861
J84
IN
DC12V 15mA
IR RECEIVER
IR INPUT AMP
Q853
Q854
Q855
Q851
D860
Q852
J85
J82
D804
AMP
Q856
Q857
REPEATER
OUT
IR
SL16
TEXT
REPEATER
OUTPUTAMP
S1
J81
SYSTEM
CONTROL
AMP
IR INPUT
D852
D851
D706
D707
D705
D854
D858
D853
D857
D855
D856
(X08-297X-XX) (A/10)
KRF-V7772D(K)SD2,2P( 99.10.2910:18AM y[W 6

AE AF AH AJ AL ANAG AI AK AM
VDDVDD
27 16 15 CLK 18 17
19
21
20 22 23
24
26 25
GND
DIR/DSP
(LPF)
(FRONT)
13 14 11 12 10
ON
8 9 6 7 4 5 3
28 VDD VSS 1
2
STDATA
(SURR.)
ON
TONE
OFF OFF
ON
OFF
9
13
11
10 12
14
16 15
VDD VSS
8
COM
TREBLE+
TREBLE-
BASS- BASS+
4 7 6 5 3 2 1
DATA CLK STB GND
3
2
4
1
7
85
68.2K
R401
1u50
C401
+
120K
R405 43K
R407 120K
R406
43K
R408
R411 390K
R421 3.9K
R409 180K
C407 27P
C405 1u50
+
R412 390K
R422 3.9K
C408 27P
R410 180K
C406 1u50
+
R403 2K
C421 0.01
560P C403
C422
560P
C404
1u50
C402
+
R404 2K 8.2K
R402
5600P
C412 3.9K
R416 10u50
C414
+0.068
C418
0.015
C416
R420 680K
16K
R418
5600P
C411
3.9K
R415
10u50
C413
+
R417
16K
R419 680K
C415
0.015 C417 0.068
0.018
C409R413
820 0.018
C410 R414
820
R427 10K
C423 100P
+17V
17V
C147 100P
R145 100K
R144 4.7K R143 4.7K
R141 4.7K
R142 4.7K
820P C420
22K
R424
R426 1K
1K
R425
22K
R423
820P
C419
17V
+17V
MUTE VDD MUTE VDD
3.3K
R469
68K
R465
10u50
C459
+
10u50
C456
+
10u50
C455
+
4.7
R466
1/4W
100u10
C457
+
1/4W
4.7
R467
8
R15 100
12
3
75
6
4
R16 100
100P
C8 100P
C7
100P
C6 100P
C5
C3 100PC4 100P
R13 220KR14 220K
C10 100P
C9 0.01
10u50
C1
+
10u50
C2
+
R3 5.6KR4 5.6K
10K
R11
10K
R12
2.4K
R10 2.4K
R9
R5
5.6K
R6
5.6K
R8
10K
10K
R7
R2
4.7K
R1
4.7K
Q3,4
Q1,2
5
64
7
3
21
8
6
57
4
3
21
8
22K
R131 0.047
C123
0.056
C121
22K
R125
R123 22K R129 22K
22K
R132 0.047
C124
0.056
C122
22K
R126
R124 22K R130 22K
11K
R128
11K
R127
R122
11K
R121
11K
0.01
C141
C142 100P
C623
100P 100K
R630
75
R629
1000u6.3
C622
+
100K
R628
C613
100P 100K
R618
1000u6.3
C612
+
22u35
C601
100P
75
R601
+
C602
22u35
C603
100P
R602
75
+
C604
22u35
100P
C605
75
R603
+
C606
22u35
C607
100P
R604
75
+
C608
10
R623
8.2K
R621
180
R614
4.7
R619
R622 39K
47
R615
C624 10u50
+
47K
R632
47
R626
10K
R627
C611 47u25
+
R612 39K
8.2K
R611
10
R613
C621 47u25
+
47
R616
1/4W
MONI
1IN1 16
2GND A15
4
3
GND IN5 VCC
OUT1
13 14
6 5IN4 7E
IN3
B
OUT2
IN2 11
12 10
8D
C9
10
R638
1/4W
100P
C636 22u35
C609
+
1
R631
GND
OUT IN
10u50
+
C634 0.1 C633 0.1
1/4W
12345678910
GND
VDD
AUX C
AUX Y
S1 V4
S1 AUX
S1 OUT
S1 V3
S1 V1
S1 V2
1213141516
CONT D
CONT E
V MUTE
CONT B CONT C
11
CONTA
2
TAPE2
1
VS C
VS Y
V COMP.
V GND
TCH
4365
TDO
TCE
TCK
TDA
T MUTE
9871110
T
TSD
1312
ENCA
IR VDD
IR GND
21
TX REM
ENCB
435
IR GND
7
CLK
DO
REM
RST
21
DI
ST
4365
u-COM
12
-B
F1
F2
IR VDD
981110
u-COM
13
SEL CK
SEL ST
SEL DA
231
POWER
SECOND
SPA
SPB
SP C&S
54786
-B
F1
13
FAST
u-COM
u-COM
1091211
VPROT
IR VDD
F2
1514
DSP GND
DSP VDD
MUTE
A MUTE
1816 17 2019
IPROT
21
R633 100 R634 100 R636 100 R635 100 R637 100 R782 100 R781 100 R780 100 R785 100 R784 100 R783 100 R786 100 R787 100
2.2
R605
A
B
C
D
E
E
D
10u50
C631
+
B
C
A
36
35
34
32
33
Q853
R791 100 R790 100
7654321
123456 7
123456 7
AVSS RECR AVCC RECL LT AGND RT
0.01 144
R141-
C148
+17V
17V
+17V
+17V
17V
17V
+17V
17V
17V
+17V
+5.8V
B
VDD
MUTEVDD
+13.7V
VDD
+5.8V
+13.7V
B
+5.8V
+13.7V
VDD
+5.8V +13.7V+13.7V
Q623,631
Q611,612,621,622
R617
75
100
R18
100
R17
IC12,13
100P
VDD
GND
OFF
VDD
GND
VDD
STEREO
IND
SPACE
C635
HH
H
H
L
L
MONITOR
INPUT VIDEO1
REC OUT
L16
12
7
5
3 AVAUX
VIDEO4
VIDEO3
VIDEO2
VIDEO1
OUTPUT 1
14
H
H
L
H
L
DC
AB15
9
11
86B
H or L
31
25 26 27 28
29
30 96
12
20
21
18
19
17
24
23
15
14
32
93
91
92
44
71
72 73
74
75
83
84
85 86 87
82a
89
88 33
34
35
C145 0.01
C146
100P
17V
+17V
+5.8V +13.7V +5.8V +13.7V
C150 39P 39P
C149
+B
+B
+B +B
+B
+B
IC15
IC42
IC61
IC62
(I/10)
(X08- )
-17.1V
17.1V
3.4V
5.7V
3.8V 4.1V
4.1V
3.8V
5.4V
1.7V
0V
4.1V
4.1V
1.7V
3.4V
1.1V
2.4V
3.8V
5.0V
3.8V
3.8V
5.0V
5.0V
5.0V
3.8V
5.6V
2.4V
5.0V
3.7V
5.7V
5.7V
0.7V
7.9V
16.9V 16.9V
-16.6V -16.6V
16.9V
-16.6V
-16.5V -16.5V
-16.5V
-16.5V
-16.6V
16.9V
-16.6V
-16.6V16.9V
16.9V
-16.5V
17V
+17V
FLch
IC41
(2/2)
(1/2)
IC41
D41
FLch
FRch
TONE AMP
D453
Q462
D452
-6dB
ATT
IC1(1/2)
IC1(2/2)
Q3
Q4 Q2
Q1
ATT
-3dB
(2/2)
IC13
(1/2)
IC13
(2/2)
IC12
IC12
(1/2)
VIDEO
1
2
J61
3
1
J62
2
3
OUT
MONITOR
REC
OUT
IN
PLAY
VIDEO1
PLAY IN
VIDEO2
PLAY IN
VIDEO3
VIDEO4
PLAY IN
D611
Q623
Q621
Q622
Q611
Q612
Q631
CN61 CN10 CN93 CN91 CN5
CN3
CN2
CN1
D101
TONE
LPF
ON/
5.7V
AVR
VIDEO
SEL.
VIDEO MUTE
VIDEO AMP
TONE
ATT
-6dB
DEHFG
CONFIS2
FILLTER
LSch
OFF
Cch
IC61 TRUE TABLE
BUFFER
(X08-297X-XX) (A/10)
KRF-V7772D(K)SD2,2P( 99.10.2910:18AM y[W 7