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Grundig RCD 1420 MP3 Service Document page 4

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CN713
C1
R704
1
C2
R793
10K
2
C3
4K7
3
C4
4
S1
5
S2
6
R703
S3
7
R794
S4
4K7
8
10K
S5
9
S6
10
S7
11
S8
12
S9
13
PUH SELECT
AREA=GEN2
TO KEY BOARD CN501
TO CD DOOR SW
R795
10K
CN708
DOOR SW
1
R796
22K
GND
2
L710
D704
R792 10K
R802
47uH
R801
4148
+
10K
C713
10K
220u
100u
C702
C701
D702
220u
4148
L709
47uH
CN710
1
2
3
4
TO KEY BOARD CN502
R812
R811
47K
47K
TO TUNER MAIN BOARD
LCD701
18 : 8. 8
TO CD BOARD CN7 13
CN501
CN502
R520
+7V
1
390
DGND
2
D501
AD2
3
AD1
4
LED
2K7
2K
1K5
R503
R502
R501
K504
K503
K502
K501
UP/FF
DOWN/REW
PLAY/PAUSE
STOP/BAND
2K7
2K
1K5
R513
R512
R511
K514
K513
K512
K511
DIR/M.DN
DIR/M.UP
MODE
PROG/MEM
16.93MHz
C785 100P
R790
R737
560
X701
C799
2K7
15P
R791
10K
C723
C724
15P
15P
C784 100n
C780 15P
X702 75KHz
C783
C782
R738
100u
C1
2K
100n
C2
C3
C781
C4
100n
R789
C786
10
10n
S1
1
80
S1
X+5V
S2
2
79
S2
XO
S3
3
78
S3
XI
S4
4
77
S4
XGND
S5
5
76
S5
GND
S6
6
75
S6
+5V
S7
7
74
S7
SEL
S8
8
73
S8
2VREF
S9
9
72
S9
DMO
10
71
S10
FMO
11
70
S11
TEBC
12
69
S12
RFGC
13
U701
68
S13
VREF
14
67
LRCK
TRO
TC94A09F-209
15
66
BCK
FDO
16
65
DATA
TEZI
17
64
DOOR-SW
TEI
18
63
INNER-SW
SBAD
19
62
+5V
FEI
20
61
GND
RFRP
21
60
C787
POWER OUT
RFZI
22
59
47u
CDRW/STEREO
RFCT
23
58
FUNCT A
A+5V
24
57
FUNCT B
RFI
25
56
EQ1
SLCO
26
55
KEY-AD1
AGND
27
54
KEY-ED2
VCOF
28
53
TUNER BAND
RVREF
29
52
PUH SELECT
LPFO
30
51
REQ
LPFN
L=FUNC IN
R705
10K
R783
R784
47P
10K
C768
C771
C769
C770
+
+
10n
47u
47u
R752
10K
R753
2K2
R785
2K2
330n
C734
270
C735
100n
R746
R748
2M2
R747
10K
C737
R749
C738
100n
100n
4K7
C733
100n
10K
C736
R750
1
RESET
GND
2
100n
MIMD
io1
3
AD0
io0
4
AD1
AD15
5
SDA
AD16
6
SCL
WR
7
AD2
U702
AD14
8
3V3T
AD13
9
SDo
TC94A02F-007
VSS
C740 100n
10
AD3
REQ
11
AD4
AD6
12
SDIo
AD7
13
BCKiO
AD8
14
LRCKiO
3V3T
15
AD5
AD9
16
CE
AD10
R712
3V3
R751
100n
10K
C712
+
R710 220
R709
+
+
C711
C705
47u
C710
2n2
100n
C708
C725
C709
2n2
47u
R708
220
C746
47n
R798
220
C777
47n
U706
MM1469PH
C776
47n
C775
47n
C774
47n
R804
3K3
220
R803
470P
C773
C772
10n
470P
C778
+
C759
TEO
47u
T4
R780
10K
T2
FEO
R774
33K
C748
220n
C747
220n
C764
4n7
T5
REGO
C794
2n7
C765
R775
C745
220
RFO
100n
C739
+
T3
10n
C744
C766
C762
47u
10n
R778
2P
18K
C763
47u
C760
R779
R777
1K
2K2
56P
T1
VREF
47K
C761
+
R797
47u
10K
AD16
AD14
AGND(PLL)
AD12
AD07
AD06
IO7
AD05
IO6
AD04
IO5
AD03
IO4
AD02
IO3
AD01
IO2
AD00
IO1
IO0
IO0
IO1
IO2
48
47
46
45
AD15
44
AD16
43
AD17
42
AD14
41
AD13
40
C730
+
39
47u
38
AD06
37
AD07
36
AD08
35
34
AD09
L706
33
AD10
R736
L705
10K
3V3
C727
C714 100n
+
+
C726
AD11
47u
47u
10K
AD12
R711
L704
10K
47uH
220
C703
R807
C704
R702
10u
68K
2n2
10K
C707
R701
2n2
10u
68K
10K
C706
R707
R808
220
Q701
8550C
C788
+
C751
10n
470u
CN709
6
SLT-
5
SLT+
4
FM+
3
FM-
R788
2
DM-
1
DM+
22K
C722
R799
6PINS
220u
220
TO CD MECHANISM
C750
+
100u
Q706
R773
1K
9015C
C749 4n7
TA2153FN
L708
U703
10uH
16
15
R770
FEO
SBAD
17
14
WIRE
FEN
TEO
18
13
SEB
TEN
19
12
VRO
2VRO
20
11
R768
68K
RERP
TEB
21
10
R767
68K
BTC
SEL
22
9
R766
68K
RFCT
LDO
23
8
R765
68K
PKC
MDI
24
7
R764
62K
RFRP IN
TNI
25
6
RFGO
TPI
100n
26
5
GVSW
FPI
27
4
AGCIN
FNI
28
3
10uH
RFO
GMAD
29
2
L713
GND
RFGC
30
1
RFN2
VCC3
R776
C743
+ C742
43K
C741
10n
47u
10n
IO(0-7)
AD(00-19)
3V3
128K X 8 (15ns )
1M SRAM (SOJ)
U705
1
32
NC
3V3
2
31
AD16
AD15
3
30
AD14
CE2
4
29
AD12
WE
5
28
AD7
AD13
6
27
AD6
AD8
7
26
AD5
AD9
8
25
AD4
AD11
9
24
AD3
OE
10
23
AD2
AD10
11
22
AD1
CE1
12
21
AD0
IO8
13
20
IO1
IO7
14
19
IO2
IO6
15
18
IO3
IO5
16
17
GND
IO4
100n
C732
47u
C731
R715
L707
33
R716
C728
L703
Q707
10K
+
C729
47uH
47uH
TL431
+
220u
C720
100n
47u
3V3
IN
OUT
47uH
R713
U708
L702
33
B1117N
47uH
47uH
R714
Q708
10K
+
TL431
+
C721
C719
47u
10u
+7V
R-CH
AGND
L-CH
7V+
R786
+
47K
C752
R706
100u
1K
Q702
9014C
10K
R787
TO CD P UH(SANYO DA11V)
CN702
16
FC-
15
TR-
14
TR+
13
FC+
12
PD
11
VR
10
LD
9
GND
8
F
7
C
6
B
5
A
4
D
3
E
2
VCC
1
VC
AD15
AD17
AD13
AD08
AD09
AD11
AD19
AD10
AD18
IO7
IO6
IO5
IO4
IO3
U709
7805
OUT
IN
100n
100n
C717
C718
C715
C716
100u
220u
12-Oct-2004

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