Sharp XL-70 Service Manual page 26

XL-70/70C
LED PWB-A4
CFW701
1
A
2 D709
MPG3372X
D706
MPG3372X
D703
MPG3372X
1 2
Q708
KTA1266 GR
B
SWITCHING
SWITCHING
Q709
KRC102 M
2
R7B2 R7B3
47K 2.2K
JOG SWITCH
C
PWB-A7
C705
0.001
C
SW700
A
JOG
B
C706
0.001
D
CNS705
M
M701
JOG MOTOR
E
1 1
2 2
3
3
CNS707
F
G
+B
H
• NOTES ON SCHEMATIC DIAGRAM can be found on page 18.
1
R7D8
D707
D708
R7D5
R7D3 82
MPG3372X
MPG3372X 82
82
D704
D705
R7D1
R7D9
R7D6
MPG3372X
MPG3372X
82
82
82
D702 D701
R7E1
R7D2 R7D4
MPG3372X
MPG3372X
82 82 82
+B
D736 D730
HY2043 HY2043
R794
R796
180
180
D732
D737
HY2043
3
HY2043
R795 R797
1
180
180
+B
1 1 1
2 2 2
3 3
3
IC702
LOADING MOTOR DRIVER
TA7291S
IC702
1 2 3 4 5 6
R787
2.2
1 1 (1/2W)
C772
2 2
0.1
CNP705
R798
8.2K
+B
C773
47/16
+B
+B
D723
D722
1N4148
1N4148
R7A9
3.3K
C711
RESET
3.3/50
Q701
KRC102 M
2
3
R7A6
R7A7
1K 1K
1
D721
C710
1N4148
0.01
SWITCHING
Q707
KTA1266 GR
R792
47K
2
R793
2.2K
2
Figure 26 SCHEMATIC DIAGRAM (3/6)
SW728
R705
VOLUME/JOG
5.6K
SW727
R706
FUNCTION
3.9K
SW726
R707
TUNING DOWN
2.7K
SW725
R708
STOP/ CLEAR
2.2K
SW724
R709
REC. PAUSE
1.5K
SW723
R710
BAND
1.2K
SW722
R711
BASS/TREBLE
1.2K
SW721
MEMORY/SET
SW710
CLOCK/TIMER/
R701
SLEEP
10K
SW709
R702
ON/STAND-BY
10K
+B
7 8 9
MVOL_UP
MVOL_DW
R799
2.2K
+B
+B
R7A0
1K
R7B0
R7A5
10K
10K
Q702
KTC3199 GR
SWITCHING
R7A4
120
Q703
KTC3199 GR
SWITCHING
C714
R7A8
R7A1
560P
82
1K
Q706
+B
KRC102 M
SWITCHING
3
1
3 4
– 26 –
SW713
VOLUME SELECT
SW712 R719
PLAY/CD PAUSE 1.2K
SW711
R720
TUNING UP
1.2K
R727
47K
R723
47K
+B
C703
0.022
X701
8 MHz
X702
32.768kHz
C701
22P
(CH)
R724
8.2K
+B
R7A3
RX701
100
REMOTE
SENSOR
C715
100/10
R778
47K
1 2 3
R779
47K
C713 R780
10/16 47K
R781
47K
R782
33K
R783
33K
C704
0.022
5
1 2 3 4 5 6 7 8 9 10
99 98 97 96 95 9
100
SEG0
COM3
1
2.5V
COM2
2
2.5V
COM1
3
2.5V
COM0
4
2.5V
5
VLC3 0V
R729
6
VLC2 1.7V
47K
7
VLC1 3.3V
8
VDD 5V
R728
9
OSC2 2.6V
1K
10
OSC1 2.6V
11
VSS 0V
12
XI 2.4V
13
XO 1.9V
C702
14
0V
MMOD
22P
(CH)
15
VREF 0V
R731
16
CLID_SW
1K
R732
17
KEY1 5V
1K
R733
18
KEY2 5V
1K
R734
19
MODEL 5V
1K
20
CLID_PRO
R735
1K 21
NC
TAPE_SW
22
5V
VSM
23
0.6V
+B
24 VREF+
5V
DI
25
0V
30
26 27 28 29 31
+B
+B
6
1
3