Sharp CD-BA300 Service Manual page 25

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