Sharp CD-BA300 Service Manual page 25

6 87 88 89 90 91 92 93 94 95 96 97 98 99 100
1
2
–20dBATT
3
T-BIAS 4
T-T1/T2
5
REC/PLAY
6
RES OUT
7
DRF
8
WRQ
9
RESET
10
X2
11
X1 12
VPP/IC
13
IC701
XT2
IX0398AW 14
SYSTEM SPN 15
MICROCOMPUTER VDD
16
CD CLK 17
CD DI
18
CD DO
19
CD CE 20
CE
21
CLK
22
DI 23
DO
24
AVSS
25
O/C DISC NO SW
26
SPEANA3
27
SPEANA2
28
SPEANA1 R
29
SPEANA0
L 30
5 44 43 42 41 40 39 38 37 36 35 34 33 32 31
R757
10K R763 10K
R764 10K
R765 10K
R795
10K
JOG701
B A
+B
7
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HEADPHONES PWB-B2
1
2
L
3
4
R
5
CNP705
C722
47/50
C726
220/10
C725
0.022
VDD
R773 1K
R774 1K
R775 1K
R776 1K
R777 1K
R778 1K
R779 1K
R780 1K
R781 1K
C723
15P
C724
18P
XL701
4.194304MHz
R782 1K
R783 1K
R784 1K
R785 1K
R786 1K
R787 1K
R788 1K
R789 1K
R790 1K
R791 1K
R770 1K
R771 1K
R772 1K
R769 1K
+B
5V BACK UP
+B
+B
RD25 RD26 RD27 RD28
680 820 1K 1.5K
SW723 SW724 SW725
SW722
TAPE REWIND
CD
TUNING MEMORY
DOWN SET
RD13 RD14
680 820
SW714 SW715
SW716
DIMMER X_BASS
EQUALIZER
RD01 RD02 RD03 RD04 RD05
680 820 2.2K 2.7K 12K
SW703
SW701 SW702
TIMER
POWER
CLOCK
8 9
Figure 25 SCHEMATIC DIAGRAM (6/10)
TO CD SERVO PWB
P17 12-B
CNP8
JK701
HEADPHONES
9 8 7 6 5 4 3 2
9 8 7 6 5 4 3 2
+B
+B
C729
3.3/50
Q709
KRC102 M
2 3
1
+B
RD29 RD30 RD31 RD32 RD33 RD34
2.2K 2.7K 3.9K 5.6K 10K 15K
SW726 SW727 SW729 SW731
SW728
STOP
PLAY
FAST REC/
FORWARD
PAUSE
RD06 RD07 RD08 RD09
10K 18K 33K 100K
SW709 SW713
SW710 SW711 SW712
DISC 1 OPEN/CLOSE
DISC 2 DISC 3 DISC SKIP
10
– 25 –
CD-BA300
CNS703
1
1
BI703
FM SIGNAL
23
P_IN
23
+B M_+12V
22
REC/PLAY
21
T_T1 T2
20
T_BIAS
19
SP_RLY
18
–20dB ATT
17
VF1
16
–VF
15
VF2
14
–15V
13
SPAN_RCH
12
SPAN_LCH
11
CE
10
CLK
9
DI
8
DO
7
S_MUTE
6
+B +5V
5
SP DET
4
A_+10V
3
UN_SW 5V
2
D_GND
1
1
D721
DS1SS133
D720
DS1SS133
RX701
REMOTE
SENSOR
1 2 3
RD35 RD36
33K 100K
SW732 SW734
SW733
TUNER
VIDEO
TUNING
UP
11 12