Kenwood RXD-V252 Service Manual page 16

AO AP
DISPLAY SECTION
1G 2G 3G 4G
K1 K8
J1
K2
K9
J2
K3 K10
J3
K4 K11
J4
K5 K12
J5
K6 K13
J6
K14
J8 J7 K7
K22
10G
9G
-28.7V
B
Q708 Q707 Q706
-26.0V -26.0V -26.0V
80
P10
79
VLOAD
78
P11
77
P12
76
P13
75
P14
74
P15
73
P16
72
P17
71
P18
70
P19/DIST0
69
P20/DIST1
68
P21/DIST2
67
P22/DIST3
66
HSS DO
65
HSS DI
64
HSS STB
63
HSS ACK
IC700
62
(BOTTOM VIEW)
NO USE/MPEG POW
u-COM
61
KARAOKE LATCH
60
STAND BY LED
59
DIST OUT
58
MP3 LED
57
MIC IN
56
FPB
55
FPA
54
PLAY SW B
POWER ON :
53 2.7V
PLAY SW A
52
CD CLAMP
SW
51
T2 RUN
VR701
+5V
4.8V
AQ AR
5G 6G 7G 8G
col
K15
L1
K16
L2
K17
L3
K18
L4
K19 L5
K20
L6
K21 L7
L8
11G
Q706-708
GRID
DRIVER
1
VDD +5V
2 R794 4.7K
-20dB 2
R700 R799
3 100 10K
DSA STB 4.8V
3
R701 1K
4
T-BIAS 4 L700
5 R702 1K
T T1/T2 5 100uH
R703 1K
6
REC/PLAY 6
7 R704 1K
RES OUT 7
R705 1K
8
DRF 8
9 R706 1K
WRQ 9
R707 1K
10
RESET
C705
11
X2
15P
XL700
C706
12
X1
13 18P
VPP/IC
R783 47K
14
XT2
R708 1K
15
SPN 15
16
VDD
R709 1K
17 29
CD CLK 17
18 R710 1K
CD DI 18
R711 1K
19
CD DO 19
20 R712 1K
CD CE 20
21 R713 1K
28
CE 21
R714 1K
22
CLK 22
23 R715 1K
DI 23
R716 1K
24
DO 24
R782
10K
25
AVSS
26 R717
DSA DATA 26
100
R798 10K
R788
27 100
DSA ACK 27
R797 10K
28 R791 1K
SPEANA2 28 30
R792 1K
29
SPEANA1 29
30 R793 1K
SPEANA0 30
VOLUME
4.8V
+5V
+5V
+5V
+12V
AS AT
B
BI8
9 1
8 2
20 3
19 4
18 5
17 6
7 7
52 8
9
BI905
6
B 5
4
47 3
5.7V
+5V 2
1
CNS701
21 1
22 2
23 3
24 4
5
4 6
5 7
6 8
41 9
10
11
+12V 12
12.2V
15V 13
2 14
5.0V
+5V 15
D707
4.9V
49 16
48 17
15 18
5.1V
57 19
20
REMOTE SENSOR
RESET
3.8V
4.9V RX701
5.0V
Q700
C707
3.3u50 D708
OUT IN
+ GND
36
39
IC561
R570
C565
(2/2)
12K
8 6 2700P
D514
7
5
C573
R568 0.022
220K
ZD561
R566
3 220K
C562 R561
1
270P 10K
2
D513
4
IC561
(1/2)
FW701 A
OPE AMP 1
2
IC562
C571 R579
3
(2/2)
8 0.022 15K
6
7
5
R576
3 2.2M
C568 R573
1
2 6800P 56K
D516
4
IC562
(1/2)
C572
0.022
RD09 680 RD10 820 RD11 1K RD12 1.5K RD13 2.2K RD14 2.7K RD15 3.9K
31
SW711 SW712 SW713 SW714 SW715 SW716 SW717
TUNING TUNING REC MEMORY/ TIMER
UP DOWN SET
RD04 RD05 RD06 RD07 RD08
680 820 1K 1.5K 2.2K
32
SW705 SW706 SW707 SW708 SW709 SW710
TAPE TUNER CD
RD01 RD02 RD03
680 820 1K
33
SW701 SW702 SW703 SW704
POWER VIDEO REVERSE X-BASS
MODE
AU AV
1 WRQ(DSP)
2 DRF
3 CD CE
4 CD DO
1 R - 1
5 CD DI
6 CD CLK
7 RES OUT
8 CLAMP SW
9 O/C SW
6 VF1
5 -VP
4 VF2
4 AH-6
3 AC RLY CONT
2 UN SW 5V
1 P-IN
CE
CLK
DI
DO
D GND
T BIAS
T T1/T2
REC/PLAY
SMUTE
SPA SIG
X - 1
3
A GND
M+12V
-15V
IC561,562 : KIA4558P
-20dB
IC700 : IX0415
SW 5V
SP DET
Q700,709,712 : KRC102M
SP RLY Q703 : KTA1273Y
Q704,705 : KTA1271Y
SPAN
Q706-708 : KTC3199GR
MIC IN
KARAOKE LATCH
D513-516,700,701,
706-711,717,718
: 1SS133
CAUTION: For continued safety, replace safety critical components only with man-
ufacturer's recommended parts (refer to parts list).
ponents. 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 resis-
tance 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 volt-
meter. The measurement value may vary depending on the measuring instruments
used or on the product. Refer to the voltage during PLAY unless otherwise speci-
fied; The value shown in ( ) is the voltage measured at the moment of STOP.
FW701 B
The DC voltage is an actual reading measured with a high impedance type volt-
RD17 RD18
1
10K 18K
meter as the AM/FM signal generator is specified to the conditions as shown in the
2
SW720 SW721
3 list below. The measurement value may vary depending on the measuring instru-
ments used or on the product. The value shown in ( ) is actual reading measured
DISC OPEN/ in the AM mode.
SKIP CLOSE
MODE CARRIER
FREQUENCY
FM 98MHz 1kHz
AM 1000(999)kHz 400Hz
RD16 5.6K
SW718 SW719
CLOCK EQUALIZER
RXD-V252
RXD-V252/V252-H
Y39-4060-23
AW AX
indicates safety critical com-
MODULATION
ANT INPUT
DEVIATION
STEREO 67.5kHz 7.5kHz(Pilot) 60dB
MONO 30% MOD 60dB