Sharp CDC2900 Service Manual - Page 19

Block Diagram 3/3

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CD-C622/C2900 SWM3 PROOF SWM4 F.A.S SOLM1 ENOID SWM5 CAM R351 VCO ADJ MONO/ST 3 15 CO MO/ST L 9 R 10 N FM/AM 11 Q343 AM TCHING 1 IC704 3 2 AGE ATER +B4 M Q702 Q703 MM1 TAPE MOTOR FL701 DISPLAY 1 2 3 4 ~ 15 16 ~ 25 26 ~ 28 29 ~ 36 37 38 39 Q705 Q706 Q707 +B7 +B7 1 RX701 3 2 +B7 51 52 53 54 55 5657 58 59 60 6162 63 64 65 66 67 68 69 70 71 72 73 7475 76 77 78 79 80 50 81 49 82 48 83 47 84 46 VDD 85 45 86 44 87 43 IC701 88 42 IX0280AW 89 41 40 SYSTEM CONTROL 90 91 39 MICROCOMPUTER 92 38 93 37 94 36 95 35 96 34 AVDD 97 33 98 VDD 32 99 31 VDD 100 30 29 28 27 26 2524 23 22 21 2019 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 UNSWITCH +B7 MEMORY BACK UP KEY SW701 ~SW730 +B5 PHM1 +B7 XL701 Q704 4.19MHz TO CD SECTION Q960 +B1 M M901 FAN MOTOR +B5 -B4 13 R P 8 L ESSOR Q121 Q122 UTING REC T1/T2 Q601 Q603 Q602 Q604 +B1 +7.3V Q908 RL901 14 10 IC901 STK40704 POWER AMP. +B 15 -B 3 1 2 D801 VOLTAGE REGULATOR Q822 FRONT 6 L-OUT 7 R-OUT T801 POWER F802 TRONSFORMER 4A/125V F803 4A/125V JK970 HEADPHONES SO901 SPEAKER TERMINAL REAR 622 SPEAKER ONLY FRONT SPEAKER +B4 +12V(ANALOG) +B5 +12V(MOTOR) VOLTAGE REGULATOR Q824 VOLTAGE REGULATOR Q823 D803~D806 +B2 +5.6V Q821 VOLTAGE T.F ZD801 REGULATOR Q801 D807 ~D809 F805 2A/250V RL801 AC POWER SUPPLY CORD AC 120V, 60Hz BAIS +B6 +5V UNSWITCH +B7 Q802 Q803 D810~D813 T802 POWER TRONSFORMER Figure 19 BLOCK DIAGRAM (3/3) - 19 -

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– 19 –
CD-C622/C2900
Figure 19 BLOCK DIAGRAM (3/3)
Q704
3
15
9
10
11
R351
VCO
ADJ
L
R
Q343
+B4
AGE
ATER
SWM3
PROOF
SWM4
F.A.S
SOLM1
ENOID
SWM5
CAM
1 2 3 4
15
25
16
26
28
37 38 39
FL701
DISPLAY
9 8 7 6 5 4 3 2 1
IC701
IX0280AW
SYSTEM CONTROL
MICROCOMPUTER
P
ESSOR
L
R
VDD
UNSWITCH
+B7
MEMORY
BACK
UP
VDD
XL701
4.19MHz
+B5
+B7
KEY
SW701
~SW730
Q908
+B5
M
Q960
+B1
RL901
622
ONLY
TO
CD
SECTION
M901
FAN
MOTOR
JK970
HEADPHONES
SO901
SPEAKER
TERMINAL
T.F
T801
POWER
TRONSFORMER
RL801
AC POWER
SUPPLY CORD
AC
120V, 60Hz
T802
POWER
TRONSFORMER
Q803
Q802
+B6
+B7
UNSWITCH
3
IC704
1
2
BAIS
T1/T2
REC
UTING
Q121
Q122
–B4
AM
TCHING
D801
D803~D806
Q801
D807
~D809
2
3
1
+B7
RX701
Q705
Q706
Q707
2
1
3
6
7
L-OUT
IC901
STK40704
POWER
AMP.
–B
+B
R-OUT
13
8
Q601
Q602
ZD801
Q603
Q604
+B1
+B4
+B5
+B2
+7.3V
+12V(ANALOG)
+12V(MOTOR)
+5.6V
+5V
Q821
Q822
Q824
Q823
VOLTAGE
REGULATOR
VOLTAGE
REGULATOR
VOLTAGE
REGULATOR
VOLTAGE
REGULATOR
Q702
Q703
AVDD
MO/ST
CO
FM/AM
~
~
~
14
10
15
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
71
70
69
68
67
66
65
64
63
62
61
80
79
78
77
76
75
74
73
72
60
59
58
57
56
55
54
53
52
51
MONO/ST
VDD
PHM1
N
D810~D813
FRONT
FRONT
SPEAKER
REAR
SPEAKER
F802
4A/125V
F803
4A/125V
F805
2A/250V
29
36
~
M
MM1
TAPE MOTOR
+B7
+B7