Kenwood KRF-V7771D Service Manual page 35

DQ DR
(X07-294X-XX) (A/8)
Q Q X25-A/7
-E7
(X07-2983-00) (A/8)
3 7 6 3 1 5 1 5 0
5/6 CN1
10 10
Cch
1
9 9
Q
8 8
SRch
Q1-10
7 7
FINAL TR.
6 6
IDLE Rch
5 5
TEST
PIN
4 4
SLch
3 3
2 2
Lch
1 1
IDLE
FLch
2
Q11-14,51-54,101,102
CURRENT LIMMIT
IDLE
FRch
CN10
3
-VC 29 -VC
+VC 28 +VC
GND 27
NFB 26
Cch BIAS+ 25
BIAS- 24
GND 23
NFB 22
SLch BIAS+ 21
BIAS- 20
X25-A/7
GND 19
-CN51
NFB 18
5/6
SRch BIAS+ 17
T E
BIAS- 16
L 1 3 9 4 2 2 9 6 5 1 3
IDLE
P GND 15
SLch
NFB 14
BLSP
Lch BIAS+ 13
4
BIAS- 12
GND 11
NFB 10
Rch BIAS+ 9
BIAS- 8
GND 7
FAN
+B 6 +B
SECOND 5 5
RELAY
CS 4 4
CONT.
POWER 3 3
FAST/SLOW
2 2
FAN
CONT.
ON/OFF 1 1
IDLE
SRch
BRSP
5
X08-
CN15
3/6
IDLE
K
6 Cch
X08-
CN13
3/6
w w w
L
-VC
+VC
+B
.
7
DS DT
Q11-14,51-54,101,102
CURRENT LIMIT
R27 R35
100 1/4W D5 D11 39K
1.0V
+VC
Q1 3
64.8V
63.8V +
R1
47 1/4W
1 0V
R11 R33
4 3.3K Q11 150K
+
0.4V 2
1/4W R31
0V D9
33K
0V
5
0V
0.3V
0V
Q3 1
Q13 -1.4V
4 +
2
R3
0V
47 1/4W 5
+
-64.8V
3
-VC
1
6
R28 R36
100 1/4W D6 D12 39K
1.0V
+VC
Q2 3
64.8V
+
63.8V
R2
47 1/4W 1
0V
R12 R34
4 3.3K Q12 150K
+
0.4V 2
1/4W R32
D10
0V 33K
5
0V
0.3V
0V
Q4 1
-1.4V
Q14
4 +
2
R4
0V
47 1/4W 5
+
-64.8V
-1.0V
3
-VC
5
4
R77 R85
D55 D61
100 1/4W 39K
1.0V
+VC
Q5 3
64.8V
63.8V
R51
47 1/4W
1
0V R83
R61 150K
Q51
4 3.3K
R81
0.4V 2 D59
1/4W 33K
5
0V
0.3V
0V
Q7 1 -1.0V
Q53
4
2
R53
0V
47 1/4W 5
-64.8V
-1.0V
3
-VC
3
R78 8
D62
100 1/4W D56 R86
39K
1.0V
+VC
Q6 3
64.8V
63.8V
R52
47 1/4W
1
0V R84
R62 150K
4 3.3K Q52
R82
0.4V 2
1/4W D60 33K
0V
5
0V
0.3V
0V
Q8 1 -1.0V
Q54
4
2
R54
0V
47 1/4W 5
-64.8V
3
-VC
7
R114 10
100 1/4W D103 D106 R118
39K
1.0V
+VC
Q9 3
64.8V
+
63.8V
R101
47 1/4W
1
R106 R117
4 3.3K Q101 150K
+
0.4V 2
1/4W R116
0V D105
33K
5
0V
0.3V
Q10 1 Q102
-1.4V
+
4
2
R102
0V 9
47 1/4W 5
+
-64.8V
-1.0V
3
-VC
x a o -VC
y
+VC
i
DU DV
8
+B
C5 C7
K1
0.22 0.22
A SP.
ON/OFF
C6 C8
0.22 0.22
+B
K2
B SP.
ON/OFF
C55 C57
0.22 0.22
SURROUND SP.
ON/OFF
+B
C56 C58 K3
0.22 0.22
K4
C SP.
ON/OFF
C103 C104
0.22 0.22
+B
D254
64.1V
64.1V
D163
+
R166
PROTECTION
47K
63.8V
Q Q
63.7V
63.8V
3 7 Q163 6 3
Q164
0V
63.6V 0V
Q161
Q162 0V
Q203
+
0V
0V
R207
( 3 )
10K
( 2 )
(
1 )
30.1V Q214
FAN HI:27.2V R214 R215
FAN DRIVE
LO:13.3V 1K 1/4W 1K 1/4W
FAN
ON/OFF
FAN
FAN HI:14.2V,LO:0V
Q211
FAN ON:0V
LO:12.7V
OFF:1.4V
OFF:0.6V
FAN
Q212
+ + +
Q215 R212 HI/LO
1K
R211
1K
( HI:0V
1 )
D213
( )
2
Q213 0V
+VC +VC
+B +B
-VC
( 3 )
Q153 Q152 Q151
SUR.SP. B SP. A SP.
ON/OFF
ON/OFF ON/OFF
DRIVE DRIVE DRIVE
D251,252
CONNECT
ON/OFF
ON:0V ON:0V ON:0V ON:0V
DRIVE
OFF:30.4V OFF:30.4V OFF:30.4V OFF:30.4V
Q153 Q152 Q151
Q154
ON:1.8V
ON:1.8V
OFF:0V
ON:1.8V ON:1.8V OFF:0V
OFF:0V OFF:0V
(
4 )
( 5 )
R256 220K
u 1 6 3 R257
R255 220K 10K
+B
.
DW DX
(X25- ) (H/7)
WH1
E6
9
8
2 4
9 9 8
7
J1
6
+
5
1 Lch
4
-
3
2
A SP. 1
-
(X07-) (B/8)
2 Rch
+
FRONT SP. WH14 RED
17
+
WH16 YEL
16
3 Lch
-
WH18 BLK
15
WH17 WHT 14
B SP.
WH15 GRY 13
-
4 Rch
+
J2
+
1 Lch
-
SURROUND SP.
-
2 Rch
+
+
3
CENTER SP.
-
(X11- ) (G/7)
P1
P2
CN6 WH6
R41 Lch 3 R556
1
470 2W GND 2 10 PHONES
2
R42 R555 10
Rch 1
J21
3
470 2W
E8
(X07-) (G/8)
1 5 1 5 0 8 9 2 4
TEMP.
SW
E11 E13 (105 C)
WH11
3 3
2 2
1 1
CN7
1 1 1 C254 0.01
+VC
2 2 2 64.8V
COOLING
+
FAN
3 3 3
D251
HI:26.7V
+ ~
D251,252
+
(X07-) (H/8)
CONNECT - ~
ON/OFF
WH12
3 3
C255 0.01
-VC
2
2
TEMP.
1 SW
1 R251
C257 0.01
(65 C) 470 1W
E12 E14
K5 D252
+
-
+VC
+B
C258
-VC
-64.8V
+B
3
D201
0V
4.2V
Q202
R203
33K
4.2V TEMP.
LEVEL
+
DETECT
Q201
0V
E10
m
c o
K
DY DZ
USED (J,K,P,C) TYPE
(X07- ) (E/8)
2 5 5: (J) 100V 50/60Hz
9 9
(K,P) 120V 60Hz
(C) 220V 50Hz
3
T1
23
1 0V
22
W5
21
W4
USED (M,Y) TYPE
20
19
(X07- ) (E/8)
18
6 120V
5 0V
4 120V
3 0V
12
2 0V
11
10
(X07- ) (C/8)
C282
6800P
J11
W187
W W
30.6V
15V AVR
E6
WH6
POWER
6
FAST OFF 5
Q302
+BR 4 Q303
+B
uCOM +B 15.9V
3
+B 15.3V
uCOM GND 2
+
+BZ
9 8 2 9 1 9
5.7V
IC31 5.6V AVR
OUT IN
+ GND
WH14 RED
WH16 YEL
WH18 BLK
WH17 WHT
WH15 GRY
+ + +
~
~
-35.3
-35 AVR
-34.8V
-61.2V
0.01 R310
1
B
1/4W
Q311
POWER ON:0V
STAND BY:12.9V
CN11
Q301
R303
4.7K POWER 6 POWER
ON/OFF
5 FAST OFF
DRIVE
POWER ON:0.7V
STAND BY:0V
+B 4 +BR
+B 3 uCOM +B
2 uCOM GND
+B 1 +BZ
DIGITAL LINE
SIGNAL LINE
GND LINE
+B +B LINE
-B -B LINE