Sharp XL-T300H

– 21 –
XL-T300H
Figure 21 BLOCK DIAGRAM (1/3)
ANTENNA
TERMINAL
AM Band
Coverage fL
FM MUTE
LEVEL
AM IFFM IF
FM IF
FM IF AM IF
AM Band
Tracking fL
VD301
SVC348S
FM IF DET./
FM MPX./AM IF
IC303
LA1832S
+5V
+5V
VT
+5V
+5V
+B
+B
+B
4.332MHz
X521
+B
FM +B
+5V
FM +B
+5V
T302
T306
T351
CF301 CF302 CF352
CF351
L354
LOW PASS
FILTER
SWITCHING
Q301
L341
BALUN
VR351
X352
4.5MHz
VOLTAGE
REGULATOR
AM
GND
FM
75ohms
SO301
VSM
AM RF
OUT OUT OUT OUT
IN IN
CUT
AM LOW
FM/AM
MPX VCO
MPX IN
MO/ST
L-CH
R-CH
FM AFC
AM OSC AM OSC
(AM/FM) PHASE PHASE IF OUT VCC FM DET STEREO SD GND AM IF REG AM MIX OUT IN IN FM IF
23 22 21 20 19 18 17 16 15 1424 13
121110987654321
PLL(TUNER)
111098765431
PD
IF IN
AM IN
FM IN
VDD
AIN
AOUT
VSS
X OUT
22 21 20 19 18 17 16 15 14 13 12
FM FM
MUTE
CE DI CL DO MO/ST IF REQ X IN
IC302
LC72131
8
7
6
5
4321
FE301
FM FRONT END
TP301
456kHz
X351
Q351
Q521
Q360
ZD351
TUNER PWB
16 15 14 13 12 11 10
9
1 2 3 4 5 6 7 8
14
13
12
11
10
9
8
7
6
5
4
3
2
1
RDS CLK
RDS DATA
VSM
SD
FM ST
DO
CL
CE
DI
A_12V
D_GND
TUN_L
TUN_R
A_GND
TO
MAIN PWB
LC72723M
RDS
CNS301
IC521
SWITCHING
RESET
SWITCHING
SWITCHING
Q701
Q702
Q703
COM0
COM3
SEG0
SEG33
REMOCON
P–CONT
VDD
32.768kHz
8MHz
38541
1
100 67
66
65
64
63
62
61
60
59
58
33
57
56
54
53
42
52
41
21
55
39 48 49 5032
47
TAPE SW
22
8
4
LCD701
FL DISPLAY
TO
MAIN PWB
REMOTE
SENSOR
RX701
RESET
23
VSM
VLC1
VLC2
VLC3
7
6
5
MMOD
VREF
VREF+
VSS
15
24
14
11
SYS_STOP POWER
3837
13
12
10
9
X701
X702
OSC1
OSC2
XO
XI
CLID_SW
SW711,712
SW721~728
SW709
SW710
KEY1
KEY2
18
17
16
SYSTEM MICROCOMPUTER/
FL DRIVER
IC701
IX0045SJ
DATA ST SD
51
B-LIGHT
DI
CL DO CE
28272625
REC
BIAS RUN PLS
SOL
MOT B-CAN
35 3634313029
SURR P-MUTE CD+B
464543
CLE
40
DISPLAY PWB
Q708
Q707
Q709
Q706
GND
LED701
LED PWB
TO
MAIN PWB
TO
MAIN PWB
TO
MAIN PWB
TO
MAIN PWB
Q806
Q804
Q807
LED702
LED703
CD LID
MOTOR DRIVER
FAN_CONT
M-GND
AMP_DET
SP_RLY
PROTECT
FAN_DET
M–12V
7
6
5
4
3
2
1
7
6
5
4
3
2
1
3
2
1
3
2
1
USWD5.6V
P_CONT
D_GND
13
12
11
10
9
8
7
6
5
4
3
13
12
11
10
9
8
7
6
5
4
3
2
1
CLE
DATA
VSM
D_GND
SURROUND
P_MUTE
CD+B
DI
CE
CL
DO
STEREO
SD
B-CAN
BLAS
U_CON5V
TAPE-SW
SOL
MOT
REC
RUN-PLS
1
2
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
SWITCH
PWB
CD LID
10
9
8
7
6
5
4
3
2
1
10
9
8
7
6
5
4
3
2
1
CD-RW
PU-IN
BUS0
BUS1
BUS2
BUS3
BUCK
CCE
CD-RES
CD-STB
GVSW
PU-IN
BUS0
DIMMER
LIGHT
CLID_UP
CLID_DW
AMP_DET
FAN_DET
FAN_CONT
PROTECT
SP_RLY
BUS1
BUS2
BUS3
BUCK
CCE
CD-RES
CD-STB
123 5 6789
LED PWB
M
CD LID
OPEN/CLOSE
TA7291S
CNW705
CNW701
CNW702
CNW703
SW802
CNW704
IC804
LED801
M801(243-6)