Sharp CD-PC1881V Service Manual page 23

9 30 31 32 33 34 35 36 37 38 39
C706
1/50
3 94 95 96 97 98 99 100
1
R779 1K
ENA 2
R778 1K
DO 3
VDD
R777 1K
DI
4
R776 1K
CE 5
R775 1K
CLK
6
R774 1K
LCK1
7
R773 1K
LCK2 8
R772 1K
CD DSP RWC
9
R771 1K
RESET
10
X2
11
XL701
X1
12
4.19MHz
VPP
13
XT2
14
CD DSP WRQ
15
TROL R770 1K
VDD
16
R769 1K
TER
SBUSY
17
R768 1K
CD DSP COIN
18
R767 1K
SQOUT
19
R766 1K
CD DSP CQCK
20
R765 1K
CD DSP RES
21
R764 1K
FRF(DRF)
22
R763 1K
SLD+
23
R762 1K
SPEANA1
8 SLD– 24
TUN SM AVSS
9 25
T2 RUN SPEANA3
0 26
SPEANA2 27
28
29
30
8 37 36 35 34 33 32 31
+B
R755
10K
R756
10K
R757
10K
KEYIN3
KEYIN2
KEYIN1
+B
7
C709
+B
0.022
C710
R780
1000/6.3
10K
C707
15P(CH)
C708
18P
+B
SW_5V
+B
D715
DS1SS133
L702
100µH
R795 Q704
D717
47K KRC102 M
DS1SS133
3.3/50
2 3
R797
C723
C711
1
100K
0.1/50
0.01
RD21 RD23 D718
RD22 RD24
DS1SS133
820 1.2K 1.5K 1.8K
SW722
SW723 SW724
SW725
FAST TUNING TUNING
PLAY
FORWARD UP DOWN
RD10
RD11 RD12 RD13 RD14
820
1.2K 1.5K 1.8K
SW711 SW712 SW714
SW710
REWIND
RECORD/ MEMORY/ SW713 TUNER/
PAUSE SET STOP BAND
RD02
RD01 RD03 RD04
1.2K
1.5K 12K
820
SW704
SW701
ON-STAND-BY SW702 SW703 TIMER/
BOOK CLOCK
SLEEP
MARK
8 9
Figure 23 SCHEMATIC DIAGRAM (6/12)
C716
47/16
C717
0.022
R793 1K
LED711
R792 1K
LED712
LED713 R791 1K
LED711~LED713
:SLI342YCJ
IC702
BU2092F
INPUT/OUTPUT
EXPANDER
+B
R799
4.7K
IC704
D720
DS1SS133
KIA7042AP
+B
RESET
UNSW_5V
1 3
C712
RX701
2
REMOTE
SENSOR
1 2 3
C713
C722
C714
0.022
10/50
0.022
+B
RD32 MJ705 RD27 RD28
RD29 RD30
3.3K 2.2K
3.9K 6.8K 12K 22K
SW729
SW728
SW730
SW731
X-BASS/ EQUALI
DIMMER
PHANTOM
DEMO ZER
RD15 RD16 RD17 RD18 RD19
2.2K 3.3K 3.9K 6.8K 12K 22K
SW716
SW715 SW717 SW718 SW719
TAPE CD AUDIO PLAYBACK
VIDEO
MODE
CONTROL
FW701
6
6
RD05
6.8K
SW705
DISC 1
1
1
+B
10
– 23 –
+B
R781
10K
VSS VDD
1 18
2 DATA 17
OE
CLOCK Q11
3 6 1
R782 1K
LED721
LCK Q10
4 15
R783 1K LED720
Q0 Q9 14
5
LED719
R784 1K
Q1 Q8
6 13
LED718
R785 1K
Q2 Q7
7 12
R786 1K LED717
Q3 Q6 11
8
LED716
R787 1K
Q4 Q5
9 10
LED716,LED717,LED721:SLI342YCJ
LED719,LED720:SLI342YCE
LED718:SLI325YC
+B
+B
SWITCH PWB-A3
INPUT/OUTPUT EXPANDER
RD31
68K
SW732
SW733
NORMAL
BY PASS
RD20
68K SW721
DIGEST
SW720
ON SCREEN
DISPLAY
SW709
RD06 RD07 RD09
OPEN/
12K 22K 68K
CLOSE
SW707 SW708
SW706
DISC
DISC 3
DISC 2
SKIP
11
CD-PC1881V
IC702 LED DRIVER OUTPUT
REMARK FUNCTION COLOUR
LED711 BYPASS YELLOW
LED712 NORMAL YELLOW
LED713 PHANTOM YELLOW
LED716 STOP YELLOW
LED717 PLAY YELLOW
LED718 CD YELLOW
LED719 TUNER YELLOW
LED720 TAPE YELLOW
LED721 VIDEO YELLOW
IC703 LED DRIVER OUTPUT
REMARK FUNCTION COLOUR
1
LED701 NIGHT RIDER GREEN
2
LED702 NIGHT RIDER YELLOW
LED703 NIGHT RIDER 3 ORANGE
LED704 NIGHT RIDER 4 RED
LED705 NIGHT RIDER 5 ORANGE
LED706 NIGHT RIDER 6 YELLOW
LED707 NIGHT RIDER GREEN
7
LED708 NIGHT RIDER 8 GREEN
LED709 NIGHT RIDER 9 GREEN
1 0
LED710 NIGHT RIDER GREEN
CNS12
RWC(DSP)
1 1
WRQ(DSP)
2 2
CO IN(DSP)
3 3
SQ OUT(DSP)
4 4
CQ CK(DSP)
5 5
RES(DSP)
6 6
DRF(ASP)
7 7
D_GND
8 8
SLD+
9 9
SLD-
10 10
PUIN SW
11 11
OPEN/CLOSE
12 12
DISC NO
13 13
UP/DOWN
14 14
SBUSY
15 15
IC703
BU2092F
RS711
1.5K
18 17 16 15 14 13 12 11 10
IC703
1 2 3 4 5 6 7 8 9
12