Block Diagram - Sharp XL 1700 - Executive Microsystem Service Manual

AM Band
Tracking fL
T302
VD301
SVC348S
+5V T306
AM Band
Coverage fL
FE301
FM FRONT END
BALUN
7
8 6 5 4 3 2 1
L341
FM +B
AM
GND
FM
75ohms
VT
SO301
ANTENNA
TERMINAL
SW711~713
SW718~720
SW725~728
M_GND
7 7
M_12V
SW709
6 6
5 5 SW710
4 4
D_GND
3 3
P_CONT
2 2
USWD5.6V
1 1
CNW701
RESET
Q701
LED701 LED702
GND
LED704 LED703
GND
LED PWB
FM MUTE
LEVEL
+5V
24 23 22
VR351
1 2 3
FM IF FM IF AM IF
CF301 Q301 CF302
T351
+5V
TP301
+5V
22 21 20 19 18 17 16 15
X352
4.5MHz
1 3 4 5 6 7
LCD701
FL DISPLAY
1 4
VLC3
5
6 VLC2
7 VLC1
8
VDD
OSC2
9
10 OSC1
X701
11
VSS
8MHz
XI
12
X702
13 XO
32.768kHz
14
MMOD
15 VREF
24 VREF+
16 CLID_SW
17 KEY1
18 KEY2
47 P—CONT
23
Q702
Q703
RX701
REMOTE
SENSOR
Q707
SWITCHING
Figure 19 BLOCK DIAGRAM (1/3)
SWITCHING
Q351
X351
456kHz
21 20 19 18 17 16 15 14
4 5 6 7 8 9 10 11
+5V
AM IF
CF352
ZD351
VOLTAGE
REGULATOR
+5V
+B
Q360
FM +B
14 13 12
8 9 10 11
5 38
SWITCHING
Q806
4 1 100 67
IC701
IX0043SJ
SYSTEM MICROCOMPUTER/
FL DRIVER
37 38
32 39 25 26 27 28 40 43 45 46 48 49 50
Q708
Q709
SWITCHING
Q706
– 19 –
XL-1700/1700C
TUNER PWB
13
12
D_GND A_GND
DISPLAY PWB
CD LID
MOTOR DRIVER
IC804
TA7291S
1 2 3 5 6 7 8 9 M801(246-6)
CD LID
OPEN/CLOSE
M
Q804
Q807
LED PWB
CD-STB
66
CD-STB 10
CD-RES
65
CD-RES 9
CCE
CCE 64 8
BUCK
BUCK 63 7
BUS3
BUS3 62 6
BUS2
BUS2 61 5
BUS1
BUS1 60 4
BUS0
3
BUS0 59
PU-IN
PU-IN 58 2
CD-RW
1
GVSW 33
CLID_DW 57
CNW704
CLID_UP 56
DIMMER 54
LIGHT 53
SWITCH PWB
51 41 44
P_STB
1
PROTECT
2
CNW703
CE
1
DI
2
CL
3
DO
4
STEREO
5
SD
6
VSM
7
DATA
8
CLE
9
D_GND
10
P_MUTE
11
CD+B
12
SURROUND
13
CNW702
SD
11
FM ST
10
DO
9
CL
8
DI
7
CE
6
5
A_12V
4
TUN_L
3
2
TUN_R
1
CNS301
LED801
10
9
8
7
6
5
4
3
2
1
SW802
CD LID
1
2
1
2
3
4
5
6
7
8
9
10
11
12
13