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
VDD 3
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
8 SPEANA1 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 ON-STAND-BY
7
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C709
+B
0.022
C710
R780
1000/6.3
10K
C707
15P(CH)
C708
18P
+B
SW_5V
KIA7042AP
+B
D715
DS1SS133
L702
100µH
R795 Q704
D717
C712
47K KRC102 M
DS1SS133
3.3/50
2 3
R797
C723
C711
1
100K C713
0.1/50
0.01
0.022
RD21 RD22 RD23 RD24 D718 RD32 MJ705
820 1.2K 1.5K 1.8K DS1SS133 3.3K
SW722 SW723 SW724
SW725
FAST TUNING TUNING
FORWARD PLAY
UP DOWN
RD10 RD11 RD12 RD14
RD13 RD15
820 1.2K 1.5K 2.2K
1.8K 3.3K
SW711 SW712 SW715
SW710 SW714
REWIND
RECORD/ MEMORY/ SW713 TUNER/ VIDEO
PAUSE SET STOP BAND
RD02
RD01 RD03 RD04
1.2K
820 1.5K 12K
SW701 SW704
SW702 SW703 TIMER/
BOOK CLOCK
SLEEP
MARK
8 9
Figure 23 SCHEMATIC DIAGRAM (6/12)
C716
47/16
C717
0.022
VSS
1
DATA
2
CLOCK
3
LCK
4
R793 1K
LED711
Q0
5
LED712 R792 1K
Q1
6
LED713 R791 1K
7 Q2
LED711~LED713
Q3
8
:SLI342YCJ
Q4
9
IC702
BU2092F LED716,LED717,LED721:SLI342YCJ
LED719,LED720:SLI342YCE
INPUT/OUTPUT
LED718:SLI325YC
EXPANDER
+B
+B
R799
4.7K
IC704
D720
DS1SS133
+B
RESET
UNSW_5V
1 3
RX701
2
REMOTE
SENSOR
1 2 3
C722
C714
10/50
0.022
+B
RD27 RD28 RD29 RD30 RD31
2.2K 3.9K 6.8K 12K 22K 68K
SW728 SW729
SW730
SW732
SW731 SW733
X-BASS/ EQUALI
DIMMER
NORMAL
ZER PHANTOM
DEMO BY PASS
RD16
RD17 RD18 RD19 RD20
3.9K SW721
6.8K 12K 22K 68K
DIGEST
SW716 SW717 SW718
SW719 SW720
CD AUDIO
TAPE PLAYBACK ON SCREEN
MODE
CONTROL
DISPLAY
FW701
6 6
RD05 RD07
RD06
6.8K 12K 22K
SW707
SW705 SW706
DISC 1 DISC 2 DISC 3
1
1
+B
10
– 23 –
CD-PC1881V
+B
IC702 LED DRIVER OUTPUT
REMARK FUNCTION COLOUR
R781
LED711 BYPASS
10K
LED712 NORMAL
LED713 PHANTOM YELLOW
LED716 STOP
LED717 PLAY
LED718 CD
VDD LED719 TUNER
18
17
OE
LED720 TAPE
Q11 6 1
LED721 VIDEO
R782 1K LED721
Q10
15
R783 1K LED720
Q9
14
IC703 LED DRIVER OUTPUT
LED719
R784 1K
Q8
13
REMARK FUNCTION
LED718
R785 1K
Q7 12
LED701 NIGHT RIDER
R786 1K
LED717
Q6 11
LED716
R787 1K
LED702 NIGHT RIDER
Q5 10
LED703 NIGHT RIDER
LED704 NIGHT RIDER
LED705 NIGHT RIDER
LED706 NIGHT RIDER
+B
LED707 NIGHT RIDER
LED708 NIGHT RIDER
LED709 NIGHT RIDER
LED710 NIGHT RIDER
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
SWITCH PWB-A3
IC703
BU2092F
INPUT/OUTPUT EXPANDER
RS711
1.5K
18 17 16 15 14 13 12
IC703
1 2 3 4 5 6 7 8 9
SW709
RD09
OPEN/
68K
CLOSE
SW708
DISC
SKIP
11 12
YELLOW
YELLOW
YELLOW
YELLOW
YELLOW
YELLOW
YELLOW
YELLOW
COLOUR
1
GREEN
2
YELLOW
3 ORANGE
4 RED
5 ORANGE
6 YELLOW
GREEN
7
8 GREEN
9 GREEN
1 0
GREEN
11 10