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CD-E250 (serv.man13). Block diagram - Sharp Audio Service Manual (repair manual). Page 4

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– 21 –
CD-E250E
CD-E550E
 Figure 21 BLOCK DIAGRAM (4/4)
TO  MAIN  SECTION 
TO  POWER  SECTION 
Q702,Q703,Q704
RESET
Q701
LED701
G9
VDD3
VDD2
VDD1
VDD4
G1
1
1
2
CNS405
CNS901
CD  RES
CE
ROTATE
UP_SW
DOWN_SW
OPEN_SW
DISC NO._SW
DISC 1_SW
CLOSE_SW
DRF
VWRQ
11
8
10
9
6
7
4
5
2
3
1
1
2
3
4
5
11
3
~
15
12
~
50
51
47
~
38
30
29
IRQ
28
POWER_KEY
27
19
X-BASS/DEMO
KEY2_IN
~
~
P1
P4
GND
89
GND
GND
~
P5
P20
~
31
16
32
33
~
67
68
69
70
71
73
4
5
6
7
74
75
CNS803
8
10
9
6
7
4
5
2
3
1
CNS102
2
1
4
3
6
5
7
CNS202
6
7
4
5
2
3
1
80
82
23
84
79
76
77
78
21 92 93 94 91 88 85
95 96
11 26
97 98 99 100
83
81
52
~
VF1
VF1
VF2
VF2
3.8V
3.8V
–30V
+B3
–B2
+B3
5.6V
+B3
+B3
D_GND
IC701
CD-E550E:IX0065SJ
CD-E250E:IX0058SJ
SYSTEM
MICROCOMPUTER
VFD701
FL DISPLAY
RX701
REMOTE
SENSOR
KEY
SW703~SW710
SW719~SW721
18
16
15
14
17
90
46
72
KEY1_IN
CF2
CF1
KEY
SW711~SW715
SW722~SW724
SW702
POWER
ON/STAND-BY
SW701
X-BASS
/DEMO
X702
8 MHz
DISC_NO_SW
DISC1_SW
DISC_UP_SW
CLOSE_SW
ROTATE
DISC_DOWN_SW
OPEN_SW
CD_CE 
CD_RES
CD_DRF
CD_WRQ
T1_SOL
T1_RUN_PLUS 
T2_TAPE2_SW 
CH_SW 
MOTOR 
T1_RUN_PLUS 
T2_SOL
TAPE_BIAS 
REC_PLAY
REC 
FAN_PRT
FAN_START
SP_DETECT
SP_RELAY
SIGAL_LVL
P_MUTE
CD+B
CH_SW
T2_RUN_PLUS
T1_RUN_PLUS
T2_SOL
T1_SOL
MOTOR
REC_PLAY
TAPE_BIAS
TAPE_SW
REC  SW
FAN_PRT
P_MUTE
SP_RELAY
FAN_START
CD-E550E ONLY
SIGAL_LVL
SP_DETECT
CD+B
SD
FM_ST 
CE
CL
D0
D1
D_GND
SD
FM_ST
CE
CL
D0
D1
RESET  IN  PUT
SYS_STOP
13
12
XT2
XT1
X701
32.768 kHz
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