Sharp CD-XP300H Service Manual page 21

9 8 7 6 5
19 18 17 16 15 14 13 12 11 10
85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100
-20dBATT
0 S12 VDD 1
T-BIAS
T_T1/T2
T-REC/PLAY
CD RESOUT
CD_WRQ
RESET
X2
X1
IC701
VPP/IC
IX0524AW
SYSTEM
CD_DRF
MICROCOMPUTER
VDD
CD CLK
CD DI
CD DO
CD CE
CE
CLK
T2_PLAY SW/
28
FPA/FPB SW
DI
29
PROTECT
52
T1 RUN
DO
T2 RUN LVL_DET 30
51
AVSS
DISC_NO SW
TUN SM
46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31
R765
R756
80
4.7K 4.7K
K
R761
10K
LED701
SLR342VCJ
R768
10K
R767
10K
R766
10K
7
R795
1
C701
1/50
C702
C703
220/10
0.022
+B
1
R763 1K
2
3
R702 1K
4
R703 1K
5
R704 1K
6
R705 1K
7
R706 1K
8
9
R708 1K
10
C704 15P
11
C705
12
18P
XL700
13
4.194304 MHz
14
R769 1K
15
+B
16
R709 1K
17
R710 1K
18
R711 1K
19
R712 1K
20
R713 1K
21
R714 1K
22
R715 1K
23
R716 1K
24
25
R717 100
26
R737 100
27
R791
R739 1K
28
4.7K
29
30
R759
5.6K
R773
10K
+B
+B
KEY 2
KEY 1
KEY 0
8
Figure 29 SCHEMATIC DIAGRAM (8/10)
1.5
+B
5V BACK UP
+B
RD19 RD20 RD21
680 820
1K
SW721 SW722 SW723
VOLUME
VOLUME DISC
UP DOWN SKIP
RD10 RD11
RD12
680
820 1K
SW711 SW712 SW713
TUNER
CD TAPE
(BAND)
RD01 RD02
680 820
SW701
SW702
FAST
ON/STAND-BY
REWIND/
PRESET DOWN
9 10
– 29 –
DISPLAY PWB-B2
DISC_NO SW
O/C_SW
CLAMP SW
RES OUT
CD CLK
WRQ(DSP)
AC_RLY CON
D712
DS1SS133
UN_SW5V
L701
D713 DS1SS133
100 H
D714
DS1SS133
RX701
RESET
REMOTE SENSOR
R781
Q709
C714
47K
KRC102 M
3.3/50
2 3
1 2 3
+B
R782
C715
1
100K
0.01
RD22 RD23 RD24 RD25 RD26
1.5K 2.2K 3.9K 5.6K
2.7K
SW724 SW725 SW727 SW728 SW729
EQUALIZER DISPLAY
OPEN/ PTY TI
ASPM
/X-BASS/DEMO MODE
CLOSE SEARCH
RD13
RD14 RD16 RD17
RD15 RD18
1.5K 2.2K 5.6K
2.7K 3.9K 10K
SW714 SW715 SW716 SW717 SW718 SW719
RECORD
VIDEO TIMER/ TUNING/ MEMORY
TUNING
PAUSE
/AUX SLEEP TIME UP /SET
/TIME
DOWN
RD03 RD04
1K 1.5K
SW703 SW704 SW705
FAST
PLAY/
FORWARD STOP
REPEAT
/PRESET UP
11
CD-XP300H
CNS701
10 10
9 9
TO CD
8 8
SERVO
PWB
7 7
P31 12 - B
6 6
CNP8
CD DI
5 5
CD DO
4 4
CD CE
3 3
DRF
2 2
1 1
BI701
CNS705
TO
VF2
POWER
1
1
PWB
–VF
2
2 P27 7 - F
P_IN
CNP802
3 3
VF1
4
4
5
5
BI705
D711
DS1SS133
R783
100
C717
47/25
SW720
CLOCK
12