Krf-V7771D/V8881D/Vr - Kenwood KRF-V7771D Service Manual

BS BT
Q Q
3 7 6 3 1 5 1 5 0
+B
( 14 )
+5V +5V
( 12 )
D110
+5V
R659 47K
R660 47K
R661 47K
R662 47K
R663 47K
R664 47K
R665 47K
R666 47K IC67
0V 15 14
(
86 ) D0
0V 16 13
( 87 ) D1 RESET
0V 17 12
(
88 ) D2 GND
0V 18 2.3V
0V
( 89 ) D3
0V 19
11
100 ( )
90 D4
V-STB XIN
0V 20 2.5V
R669
99 0.4V ( 91 ) D5
S MUTE 99
0V 21
10
98 5.0V 100 ( )
92 D6
V-MUTE XOUT
5.0V
0V 22
97 0V ( 93 ) D7
9
20dB ATT 97
VDD
96 4.9V
8
SW-MUTE
REM
95 0V
7
MUTE B 95
94 4.6V
23 6
MUTE A
93 0V
24 5
SMK D7 93
PTREN
92 0V
25 4
D6 92
PWR
91 0V
26 3
D5 91
RWRREQ
90 0V
27 2
D4 90
89 0V 28 1
D3 89
88 0V
D2 88
0V
87
D1 87
86 0V
D0 86
REMOTE
0V R680 100
85
RWR 85 u-COM
84 0V R681 100 T E
ENB L 84 1 3 9 4 2 2 9 6 5 1 3
5.0V C615
83
REQ 83 0.1
82 5.0V
STROBO
C614
0V
81
10u50
DIN SEL2
+
R695 47K
R697 47K
R698 47K
R699 47K
R693 47K
IC68
X5
4.332MHz
R694 47K RDS
DATA
R696 47K
DEMODULATOR
R919 47K
+5V +5V
R918 47K
5.0V
R917 47K
R916 47K
IC68
C944 1000P
R701 47K
R914 47K
R702 47K
R703 47K
+
B
w w w
.
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 13 12 11 10 9
CN14 CN13
J
BU BV
D54
+B
R587 47K
R586 47K
R585 47K
R584 47K
R583 47K
R582 47K
R581 47K
4.9V
83
C616
0.1
X6
3.63MHz
R658 100
0V 61
( 61 ) AUD
+5V
R657 100 0V 62
0V
( 62 ) AC3
82
R656 100
0V 63
( 63 ) DTS
5.0V 64
( 64 ) GPI0
0V
84 R655 47K 0V 65
0V DATA IN
85 R654 47K
0V 66
5.0V NC
R653 47K 0V 67
NC
5.0V 68
+B VDD
2.8V 69
X4 X2
5MHz
2.3V 70
X1
71
IC(VPP)
72
XT2
73
XT1
5.0V 74
+B AVDD
75
AVREF
0V 76
( )
76 HREQ1
R652
0V 77
( 77 ) SS1
100 5.0V 78
( )
78 RES1
0V 79
( 79 ) HRED2
5.0V R651 80
( ) SS2
80
100
R646 47K
R645 47K
R913 47K
R644 47K
R643 47K
R642 47K
R641 47K
+B
0V
Q63,67
0.7V
INVERTER
Q63
Q67
5.7V
4.9V
R991
10K
+B
+12V
B
x a o
y
i
8 7 6 5 4 3 2 1 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
CN15
L K
BW BX
IC52
IC53
IC54,72
IC55,58
8
IC56
IC57,63,73
IC59
IC60,71,89
IC61,64,65
IC62
IC66
IC67
IC68
IC69
IC70
KRF-V7771D (X08-2XXX-XX)
DESTINATION
COUNTRY
GENERAL MARKET
KRF-V8881D (X08-2XXX-XX)
DESTINATION
COUNTRY
+B
GENERAL MARKET
VR-2080 (X08-2850-10)
DESTINATION
COUNTRY
R601 47K CANADA
R602 47K
VR-2090 (X08-2850-11)
R603 47K A
DESTINATION
R604 47K COUNTRY
R605 47K
CANADA
D108
+12V
40 0V R606 47K
NC
R607 47K GND
39 5.0V
NC
38 5.0V R608 47K
NC
R609 47K R
37 5.0V
NC
36 5.0V R610 47K
NC
R611 47K 455K
35 0V
NC
ENC1
34 0V R612 47K
AUX
33 ENC2
VSS
IC66
32 R613 47K
V-1
0V
R614 220K
SUB 31
V-2
u-COM
30 R615 220K
V-3
R616 220K
29
V-4
Q Q
28 R617 220K
WIDE 3 7 6 3
R903 100
27
P LEV
26 R618 47K
NC
5.0V
R619 47K
25
NC
24 R620 47K
NC
23 R621 47K
NC
22 R622 47K
NC
21 R623 47K
NC
R908 100
1
A
R907 100
2
R906 100
3
R905 100
4
R904 100
5
S
R624 47K
+B
R625 47K
R626 47K
R627 47K
R628 47K
R629 47K
R630 47K
R631 47K
R632 47K
R633 47K
(
35 )
u 1 6 3
.
SIGNAL LINE
GND LINE
+B
+B LINE
VR-2080/2090(K) (3/6)
-B -B LINE
KRF-V7771D/V8881D(M) (3/6)
BY BZ
: DSPI56009FJ88 IC74,76,78,80 : NJM4565M Q51,53,68 : UN5112 or
: TC7W04FU IC85 : TC7S04F DTA124EUA
: TC74HCU04AF IC86 : N341256SJ-15 or Q52,54,63,67
: LH64256CK-70 W24257AJ-15 or : UN5212 or
2 4
9 9
: DSPF56009FJ88 N341256SJ-12 or DTC124EUA
: LM2940CT-5.0 W24257AJ-12 Q55 : 2SB1424(Q,R)
: DSPB56007FJ88 IC87 : 27C1000MC-12 Q56,58,60,64
: TC74HC153AF IC90 : TC74HC393AF : 2SC4081(R,S) or
: TA7805S IC92 : TC74HC123AF 2SC4116(Y,GR)
: CS4226KQC Q57,65 : UN5219 or
: UPD78058GC-A74 DTC113ZUA
: UPD17215GT-737 Q66 : 2SA1576A(R,S) or
: TDA7479D 2SA1586(Y,GR)
: UPD78078GF-080
: S-806D-Z
R695,712, R698,699,
UNIT No. R697 R918 CN19 W1 W2
A B C D E F
ABB. 916,917 914,919
JAPAN J 850-01 NO YES YES YES NO
The DC voltage is an actual reading measured with a
PX Y1 852-91 NO NO
M1 YES NO NO NO
NO YES
850-21 YES
YES YES high impedance type voltmeter with no signal input.
CHINA C1
CHINA C1 903-00
The measurement value may vary depending on the
measuring instruments used or on the product.
R695,697,914, R698,699,712,
UNIT No. A C F B D E CN19 W1 W2
916,917 918,919
ABB.
M2
850-22
CHINA C2 YES NO YES NO YES NO YES
CHINA C2 903-01
DOLBY and the double-D symbol are trademarks of
R695,697- R914,916-
UNIT No. A B C D E F CN19 W1,2 Dolby Laboratories Licensing Corporation. Noise
699,712 919
ABB.
U.S.A. K
850-10 YES NO NO NO NO
reduction circuit made under license from Dolby Lab-
P1
oratories Licensing Corporation.
R695,698,712 R697,699,914,
UNIT No. CN19 W1,2
A B C D E F
ABB. 916,918 917,919
U.S.A. K2
850-11 NO YES YES YES NO
P2
(X11- ) (D/7) (X11- ) (F/7)
E6 WH5
1 ENC2
( 5 )
2 ENC1
( 4 )
WH4 E5 R290
1K
1 3 +5V
+12V +12V +5V
2
IR
REMOTE
TRANSMIT
12.5V
R294
3 390
Q42
12.5V
4
R293
4
390
Q41
5
5
4 GND
(X11- ) (E/7)
1 5 1 5 0 8 9 2
VR-2090(K,P) ONLY
J12
RELAY
CONTROL
12V 20mA
WH3 E4 R99
D32
1.5K
1
+12V +12V +12V
2
R96
RELAY CONT1
3 1.5K
GND
14.1V
4
14.1V
RELAY CONT2
5
Q14
GND Q14
TV
6
TV POWER
REP. OUT ON/OFF
Hi:ON
7 0V SENSOR
0V
IR IN
5V 10mA
8 R91
IR OUT 1K
Q13
9
TV SENSOR
J13
R97
100 IR
RECEIVER
R79 1.5K IN
12V 20mA
R80 1.5K
R81 1.5K
R94
100 IR OUT
LCD
REMOTE
W999
R38 1.5K
J14
R39 1.5K
R40 1.5K
R82 1.5K
IR
REPEATER
R83 1.5K
OUT
R84 1.5K
W317 m
VR-2090(K,P) ONLY
c o

KRF-V7771D/V8881D/VR-2080/2090

Y05-3570-10
CA CB
A1,2 : W02-1181-05 X25-A/7
-E2
A3 : W02-1114-05
5/6
D51-53,62,72,75,76,109
2
8 9 9
: DA204U or
1SS302 or
I
MA143A
D54,59,110 : DAP202U or
1SS300 or
MA142WA
D58 : DAN202U or
1SS301
D60,61,63,108,111
: MA111
D64,65,103
U1BC44
:
E7
1
2
R89
S1 220
R90
3
+5V 220
VOLUME
(ENCODER)
4
4 9 8 2 9 9
Q13 : 2SC4081(R,S) or
2SC4116(Y,GR)
Q14 : UN5119 or
DTA113ZUA
Q41,42 : 2SC3940A(R,S)
D21-24 : B30-2519-05
D31 : UDZ5.6B
D32 : MA111
D34 : UDZ5.1B
D35 : RD5.1ES(B2) or
HZS5.1N(B2)
X11-A/7
-E1
4/6
G
X25-A/7
-E5
5/6
J
X07-A/8
-E10
6/6
K
X25-C/7
-CN33
6/6
L