Sharp CD-C478, Service Manual

Page: 23 / 80

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CD-C478/478C
Figure 23 BLOCK DIAGRAM (3/3)
R
L
IN
OUT
L
R
8
4
SYSTEM MICROCOMPUTER
ICF01
1
7
3
5
SPE1~5
IX0235AW
~
~
~
VSS
~
FL DRIVER u
CONTROLLER
FL DIPLAY
REMOTE
SENSOR
RES
+B6
CQCK
COIN
SQ OUT
WRQ
RWC
CD SL+
CD-PUIN
CD-DRF
+B4 (5V BACK UP)
+B3
VDD
+5V
UNSWITCH
+B2
MEMORY
BACK UP
VSS
+B4
RESET
OSC
4.19MHz
X201
SYSTEM STOP
P.FAIL DET
+B3
RESET IN
CD SL-
4
1
+B2
VDD VEE
-VP
JOG SW
~
NJM4565M
+B7
QP03
POWER
ON/STB
POWER
SWITCHING
+ L-CH
M
FAN
FAN
MOTOR
POWER AMP.
+B6
PROT
RELAY
H/P SW
SP DET
L-IN
R-IN
POSISTOR
1
2
(AC)
(AC)
62
KEY MATRIX
KEY IN
TO CD UNIT
-B +B
Q907
ICP11
STK407-250
ICV01
R-OUT
L-OUT
C-OUT
- GND
+ R-CH
- GND
+
- GND
C-CH
QV14
QV20
QV21
QY12
QV22
QV13
QY11
REGULATOR
VOLTAGE
SWITCHING
REGULATOR
VOLTAGE
+12V(ANALOG)
+12V(MOTOR)
UN-SWITCHED
+B2
+B6
+B7
-15V
REGURATER
-B6
VOLTAGE
REGULATOR
+7.3V(CD)
TO CD UNIT
VOLTAGE
T.F
VF1 VP
(AC) (AC)
VOLTAGE
REGULATOR
TRANSFORMER
POWER +B -B
10A
10A
D991
F995
F996
T991
2.5A
1.6A
Q951
F998
F997
D992~D995
F990
5A
REGULATOR
VOLTAGE
D996~D999
Q911
Q910
+5V(DOLBY)
Q904
Q903
Q902
Q901
Q906
Q905
+B8
+B9
Q909
Q908
+4.6V
POWER AMP.
-B +B
STK407-250
SL-OUT
SR-OUT
SW-OUT
SL-IN
SR-IN
C-IN
SW-IN
+
SPEAKER
TERMINAL
- GND
+
- GND
+
- GND
SW-CH
TMV01
JV91
HEADPHONES
TMV01
TERMINAL
SPEAKER
FD01
F1
F1
F2
F2
VF1
VF2
5
ICD01
IX0234AW
RXD01
4
SWD01 SWD02
~
LEDD01~
LEDD28
DAT
COM
SCK
SWD03~SWD06
SWD12~SWD17
SWD23~SWD48
SWD50~SWD54
QY12
RELAY -B6
STB
RES
TUNER MUTE
TU-DO
TU-SD
T1 CrO
2
T1 RUN
T2 RUN
T2 A FP
T2 B FP
2
T2 CrO
CAM-SW
TAPE SOL
TA MOT
HIGH SP
FR SP
BIAS
TA R/P
PB EQ
REC EQ
REC MUTE
REC MUT
T1/T2
PB MUTE
FAN
SP DET
POSISTOR
H/P SW
PROT
FRONT RELAY
SURROUND RELAY
CENTER RELAY
S-W RELAY
S-MUTE
POWER
S-W-MUTE
CENTER-MUTE
SURROUND-MUTE
QG01
QG02
QG03
ZDF01
FUNC A
CE
STB SCK DAT STB RES SCK DAT COM
AD RES SW ON/OFF
DIGITAL1
DIGITAL2 AC32RES AC32SS
AC32SI AC32SO
AC32SCK
V1/V2
DEM 0
DEM 1
DOLBY SECTION
CD U/D
CD O/C
CD DNO
TU CL
VOLTAGE
REGULATOR
QZ01 +B10
-B10 QZ02
REGULATOR
VOLTAGE
REGULATOR
VOLTAGE
SL-CH
SR-CH
ICX01
QY52
RLYV11
RLYY11
RLYY51
RLYX11
RELAY
QX13
QX14
QY51
QP04
QP16
S-MUTE C-MUTE
SR-MUTE
SW-MUTE
LOW BOOST
AMP.
QP15
QP13
QP14
57
43
~
43 5
29
12
1
95
96
97
21
26
28 27
14
51 90
72
46
18
13 89 15
10
8
88 79
91
94
99
5
3
11
100
2
1
14
13
18
56
90
15
57
89
12
16
17
27
86
85
84
68
49
67
56
82 24 26 27 49 50 51 52 54 63 64 65 66 76
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
19 23 62 61 60 78 79 87 88 91 92 93 94 95 96 97 98 6
7
8 9 10 7 8
9 ~
7
9
8
20 1
5
3
10
12
18
10
12
18
7
9
QV18 QV19
QX51
QX16
VF2
8
20 1
5
3
31 28 31 17
AC POWER CORD
AC120V 60Hz
ICC01
LU1035M
DOLBY PRO LOGIC
DECORDER
2
65M
AMP.
R
L
IN
OUT
8
4
1
7
3
5
NJM4565M
+B7
ICP12
-B6
LOW BOOST
AMP.