Kenwood KRF-V7771D Service Manual page 25

K L
Q Q
3 7 6 3 1 5 1 5 0
D6
BUFFER
( 2 )
1.0V
Q609
1.6V
8.1V
+
C656
1000P
R344
470K
( 1 )
( 3 )
C340
100P
R343
470K
17V
T E
L CN11 1 3 9 4 2 2 9 6 5 1 3
15 DET
14 S-LEVEL
13 SD
12 STEREO
11 Rch
ROOM B
E. VOL.
W606 IC27
10 GND
(BOTTOM VIEW)
( 4 )
9 Lch
+17V 8 +17V
17V 7 -17V
6 T. MUTE
( 4 ) 5 PLLDATA
+17V
( 5 ) 4 PLLCLK
( )
3 3 PLLCE
17V
(
6 ) 2 PLLDO
1 DE-ENPH
VR-2090(K,P) ONLY
WH601
VR-2080 (X11-3800-10)
DESTINATION
UNIT No. A B C D E
COUNTRY ABB.
U.S.A. K
00-10 NO
CANADA P1
VR-2090 (X11-3800-11)
DESTINATION
UNIT No. A C B D E
COUNTRY ABB.
U.S.A. K2
00-11 YES NO
CANADA P2
KRF-V7771D (X11-38XX-XX)
DESTINATION
w w w
UNIT No. A C B D
COUNTRY ABB.
JAPAN J 00-01 NO YES
PX Y1
GENERAL MARKET M1 00-21 NO
YES NO
CHINA C1
CHINA C1 13-00
KRF-V8881D (X11-38XX-XX)
.
DESTINATION
UNIT No. A C B D
COUNTRY ABB.
GENERAL MARKET M2
00-21
CHINA C2 NO YES NO
CHINA C2 13-00
M N
R311 C341
1K 10u50
+
R301
680K
C303 C301
0.015 0.068
R313
390K
17V 17V
TONE
+17V
IC44
IC43 16.3V
(1/2)
LADDER RESISTOR LADDER RESISTOR 8 5
7
ANALOG SW ANALOG SW 6
R317
180K
C315
13bit LATCH CIRCUIT 13bit LATCH CIRCUIT
27P
AMP
CODE DETECT
20bit SHIFT REGISTER CIRCUIT
CIRCUIT
C316
ANALOG SW ANALOG SW
27P
LADDER RESISTOR LADDER RESISTOR
R318
180K
2
1
C314 3
0.01
IC43
4
16.3V
R314 (2/2)
+17V
390K
-16.5V
C304 C302
0.015 0.068
R302
680K
R312 C342
1K 10u50
+
17V 17V 17V
+17V +17V +17V
ROOM B
IC28
Lch
16.3V
R266 (1/2)
-16.5V
C254
100K 10u50 3 C260
8
D5 + 1 22u16
+ 2
- +
R256 11K
C258 R272
22P 100
AMP
C257 R271
22P 100
R255 11K
6 C259
C253 - 7 22u16
10u50
5
+ +
+ 4
IC28
ROOM B
16.3V
(2/2)
Rch
R265 -16.5V
100K
+17V
17V
C608, C626,670, C630, C679, R615, R627, R672,
C624 C625 C649 R614 R623 R625 R640 R653
688 671,682,687 631 680 682 628
NO 390P 150P YES 0.033 2.2u50 3900P 100 YES 11K 18K 4.7K NO 2.2K 3.9K
C608, C626,670, C630, C679, R615,640, R627, R672,
C624 C625 C649 R614 R623 R625 R653
688 671,682,687 631 680 682 628 673
NO 390P 150P YES 0.033 2.2u50 3900P 100 YES 11K 18K 4.7K 2.2K 3.9K
C626, C670, C630, C679, R615, R627,
E C608, C624 C625 C649 R614 R623 R625 R653
687,688 671,682 631 680 640,682 628
820P 0.01 NO 0.015 4.7u50 6800P NO 1K
YES x NO a o 270 NO 3.3K 8.2K
390P 270P YES 0.018 2.2u50 3300P 15K 2.2K
y
i
C608,626, C670, C630, C679, R615, R627, R672,
E C624 C625 C649 R614 R623 R625 R653
687,688 671,682 631 680 640,682 628 673
YES 390P 270P NO 0.018 2.2u50 3300P 270 NO 3.3K 15K 8.2K 2.2K 8.2K
O P
2SA1123
2SA992
8
2SC1845
2SC2003
2SC2631
CN5
( ) 2SC3244
1 15 TONE OUT Rch
(
2 ) 14 GND 2SC3940A
( 3 ) 13 TONE IN Rch
( 4 ) 12 GND
11 TONE IN Lch
X11-A/7
10 GND -E2
9 TONE OUT Lch
4/6
17V 8 +17V
+17V 7 -17V
A
6 B-MUTE
FLch
C321 R325
1u50 8.2K
5 DGND
+
4 VOLUME-STB
3 TONE-STB
2 VOLUME. TONE-CLK
TC74HC4051AP
1 VOLUME. TONE-DATA LA1837
LA1838 TC9413P
C322 R326
1u50 8.2K
+
LM2940CT-5.0
FRch
CN7
X25-A/7
9 B-Rch IN
-CN29
TC7S04F
8 GND
Q Q 5/6
7 B-Lch IN
3 7 6 3
6 GND
B
5 B-Rch OUT
4 GND
3 B-Lch OUT
2 GND
1 B-MUTE
UPC7905AHF
GND
X08-
E3
3/6
C
W611,656,682, L604- CF601,
W606 W688 CF603 A601 IC601 CN12 D614 WH601
683,686
673 607 602
NO NO YES YES L72-0596 NO W02-2622 LA1837 YES NO NO
W611,656,682, L604- CF601,
W606 W688 CF603 A601 IC601 CN12 D614 WH601
683,686 607 602
NO NO YES YES L72-0596 NO W02-2622 LA1837 YES NO NO
R672, W611, W682, L604- CF601,
W606 W656 W688 CF603 A601 IC601 CN12 D614
673 686 683 607 602
18K YES YES NO W02-2621 YES
u 1 6 3 YES YES NO L72-0531 YES LA1838 NO
8.2K NO NO YES W02-2622 NO
.
W611, W682, L604- CF601,
W606 W656 W688 CF603 A601 IC601 CN12 D614 WH601
686 683 607 602
NO NO YES YES YES NO L72-0531 YES W02-2622 LA1838 NO NO YES
VR-2080/2090(K) (1/6)
KRF-V7771D/V8881D(M) (1/6)
Q R
DTC124ESA UN5119
2SA1048 UN5219
2 4
9 9
2SC2458 2SA1586
2SC4081
2SC4116
2SB1375 2SD1757K NJM4558D
2SD2012 NJM4565D
NJU3713D SN761200N
DAN202U UPC7805AHF
SI-3082V 1SS301 TC74HC123AF
TC74HC153AF
1 5 1 5 0 8 9 2
TC9412AP LC72131
OUTPUT
INPUT
CAUTION: For continued safety, replace safety critical components only with
manufacturer's recommended parts (refer to parts list).
components. For continued 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 carried out (exposed parts are acceptably
insulated from the supply circuit) before the appliance 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 measurement value may vary depending on the measuring
instruments used or on the product. The value shown in (
measured in the AM made.
MODE CARRIER
m
WH601 FREQUENCY
NO
FM 98MHz
c o
YES
AM 1000(999)kHz
KRF-V7771D/V8881D/VR-2080/2090
Y05-3570-10
S T
2SA1535 UN4212
2SB1370 UN4219
2
8 9 9
2SD2061 2SA1309A
2SC3311A
TC9184AP
NJM2058D
NJM4580L MC14577CF
NJM4565M
NJM4580ED
TC7W04FU
DAP202U MA142WA
DA204K UN5212
DA204U
TC9162AF TC74HCU04AF
TC9163AF
4 9 8 2 9 9
TC9164AF
TA7805S TA79005S NJM4565L
indicates safety critical
) is actual reading
MODULATION
ANT INPUT
DEVIATION
1kHz STEREO 67.5kHz 7.5kHz(Pilot) 60dB
400Hz MONO 30% MOD 60dB