System Control - Sharp CDC2900 - 3-CD Compact Stereo System Service Manual

SWM3
PROOF
SWM4
F.A.S
SOLM1
ENOID
M
SWM5
CAM
MM1
TAPE MOTOR
R351
VCO ADJ
MONO/ST
15
3
CO
MO/ST
L
9
R 10
N FM/AM
11
Q343
AM
TCHING
IC704
1 3
2
AGE
ATER
+B4
–B4
R
13
P
8
L
ESSOR
REC
Q121
Q122
UTING
T1/T2
BAIS
DISPLAY
Q702
1 2 3 4 ~
15 16
Q703
51 52 53
54 55 56 57 58
50
49
48
47
+B7
46
VDD
45
44
43
42
41
40
39
38
37
+B7 36
35
1
34 AVDD
33
RX701
3
32
2
31
+B7 30 29 28
27 26 25 24 23
+B5
KEY
SW701
PHM1
~SW730
Q601 Q603
Q602 Q604
VOLTAGE
REGULATOR
+7.3V
+B1
Q822
+12V(ANALOG)
+B4
Q824
+12V(MOTOR)
+B5 Q823
+5.6V
+B2 Q821
ZD801
+5V
+B6
UNSWITCH
+B7
Figure 19 BLOCK DIAGRAM (3/3)
FL701
~ ~ ~
25 26 28 29 36 37 38 39
59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76
IC701
IX0280AW

SYSTEM CONTROL

MICROCOMPUTER
VDD
22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
+B7
Q704
XL701
4.19MHz
Q908
IC901
14
FRONT
STK40704
L-OUT
10 6
POWER AMP.
7 R-OUT
+B
15
3
–B
2
1
D801
VOLTAGE
REGULATOR
D803~D806
VOLTAGE
REGULATOR
VOLTAGE
REGULATOR
D807
Q801
~D809
Q802
Q803
– 19 –
CD-C622/C2900
Q705
Q706
Q707
77 78 79 80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
UNSWITCH
+B7
99
MEMORY
100
BACK UP
+B1
TO CD
SECTION
M901
M
Q960
FAN MOTOR
+B5
JK970
HEADPHONES
RL901
SO901
SPEAKER
TERMINAL
T801
POWER
TRONSFORMER
F802
4A/125V
F803
4A/125V
T.F
F805
2A/250V
T802
POWER
TRONSFORMER
D810~D813
622
REAR
ONLY
SPEAKER
FRONT
SPEAKER
RL801
AC POWER
SUPPLY CORD
AC 120V, 60Hz