Kenwood RXD-M31MD Service Manual page 24

AO AP
MAIN BOARD
+5V
+5V
C408
R412A 47K 100u10
+
R413A 47K
R414A 47K
+
R425A 47K
RESET
R407A 47K IC
IC402
R404A
47K
R434A
100
42
40
37
36 +5V
5.0V
35
33
RESET
31
R426A C409
1K 1u50
+
Q401
18
+5V
+5V D405
+12V +12V
C413A
100P
D404
+5V
16 15 14 13 12 11 10 9 8 7 6 5
SW401
F
AQ AR
R309A 3.3K
+
+ R305A C319 C321 C323
0.47u50 0.056 0.47u50
7.5K
4.8V 4.8V +
4.8V
C355A 49
LSELO
100P
4.8V
50
RINVIN1
C301 1u50 4.8V 51
51 R/AUX
+
C304 10u16 4.8V 52
52 R/CD
+
C305 1u50
4.8V 53
53 R/TUNER
+
C307 10u16 54
R/MD
+
C309 4.7u50
4.8V 55
R/TAPE
+
9.6V 56
+B VDD INPUT SEL.
C302 4.7u50
57 MAIN VOL.
+ TONE
L/TAPE
4.8V
SURROUND
C308 10u16
58
ATT.
+
L/MD
C306 1u50
59
L/TUNER
+
C303 10u16 60
L/CD
+
C310 1u50 61
L/AUX
+
62
LINVIN1
C348 C312A
100u16 100P 63
LSELO
+
64
LTIN
+
C320 C322 C324
R306A
0.47u50 0.056 0.47u50
7.5K + +
+
R310A
3.3K
Q302
+12V
11.9V
5.0V
+5V +5V
+5.6V
+8V
+5V
+5V
4 3 2 1 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
CN401 CN402
G
AS AT
C325 C327 C329 C333
0.027 0.056 2200P 4.7u50
+ +
4.8V
32 4.8V C335 10u16
RFCOM
+
31 4.8V
RFOUT
30 4.8V C337 10u16
+
29 4.8V C339 10u16
+
4.8V
28
27 4.8V
RVREF
+
26
VSS
C354A 470P
IC301
25
R313 1K
S.CE
1
C353A 100P
R312 1K
24
S.DI 100
C349A 100P
R311 1K
23
S.CL 80
C347 22u16
22 4.8V
VREF
+
21 4.8V C342 10u16
LVREF
+
20 4.8V
C340 10u16
19 4.8V
+
18 4.8V C338 10u16
+
17 4.8V
LFOUT
C326 C328 C330 C334
0.027 0.056 2200P 4.7u50
+ +
R328A 1K
57
R325A 1K
55
R332A R331A
TAPE
4.7K 4.7K
MUTE
Q306 Q305
+12V
+5V +5V
+5.6V
+5V +5V
+8V
AU AV
RN1406
RN2404
C346 CN405
4.7u50
17 OUT(L)
+
C345 16 A.GND
POWER
4.7u50
15 OUT(R) BOARD
+
-CN601
14 AGND TC74HCT7007AF
13 AMUTE
3/5
12 PWRO7
11.9V
+12V 11 A+12V
B
10 OP/CL
7.7V
+8V 9 CD+8V
5.6V
+5.6V 8 u+5.6V
15.9V
7 D+12V
6 M.GND
5 CDGND
4 4 VFL
3 3 FLAC
2 2 FLAC
LC75710NE
1 F.OFF
CN404
55 1 ROUT
57 2 LOUT
3 A.GND
4 RIN
+12V 5 +12V
LC75396NE
CASSETTE
6 LIN BOARD
-CN701
+5V 7 +5V
8 M.GND
3/5
9 D+12V
76 10 BIAS
C
74 11 B.1/2
66 12 A/B.1
65 13 A/B.2
68 14 SOL
67 15 CMP NJM431U
70 16 R.REC
69 17 F.REC
71 18 PACK
73 19 PLAY
97 20 PHOTO
(M) TYPE
JK302
ONLY
1
2
CAUTION: For continued safety, replace safety critical com-
+5V
C350 ponents only with manufacturer's recommended parts (refer
47u16 MD CONTROL
3
to parts list).
+ BOARD
-CN504
continued protection against risk of fire, replace only with
CN301
1 2
same type and rating fuse(s). To reduce the risk of electric
3/5
CN203
shock, leakage-current or resistance measurements shall
1 CD GND
D
be carried out (exposed parts are acceptably insulated from
2 DOUT
the supply circuit) before the appliance is returned to the
customer.
CN403
R356 3.3K
1 ROUT
R335 3.3K
2 LOUT The DC voltage is an actual reading measured with a high
MD CONTROL
impedance type voltmeter with no signal input. The mea-
BOARD
3 A.GND
-CN501
surement value may vary depending on the measuring
4 RIN
5 A.GND instruments used or on the product.
3/5
6 LIN
7 A.GND
E
18 8 MDRST
The DC voltage is an actual reading measured with a high
36 9 UART2
impedance type voltmeter as the AM/FM signal generator is
35 10 UART1
specified to the conditions as shown in the list below. The
11 u.GND
+5V 12 +5V KEY measurement value may vary depending on the measuring
BOARD
13 CE
instruments used or on the product. The value shown in ( )
-CN1001/1002
14 PRTMD
81
is actual reading measured in the AM mode.
4/5
MODE
F
FM
AM
DISPLAY
BOARD
-CN801
5/5
RXD-M31MD(E) (2/5)
G
Y39-3212-70
AW AX
LA6458S BA3126N
CXA1571M
CXD2587Q LA1837
BA5979S
LC72131
17
16
32
1
HA12219NT 2SB764
2SC1923-O
indicates safety critical components. For
MODULATION
CARRIER ANT INPUT
FREQUENCY DEVIATION
98MHz 1kHz STEREO 67.5kHz 7.5kHz(Pilot) 60dB
1000(999)kHz 400Hz MONO 30% MOD 60dB
RXD-M31MD