Sharp XL 1700 Service Manual - Page 19

Display Pwb, Led Pwb

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Page 19 highlights

AM Band Tracking fL T302 +5V T306 AM Band Coverage fL VD301 SVC348S OUT FM AFC AM RF IN VSM AM LOW CUT FM/AM OUT FM MUTE LEVEL +5V VR351 SWITCHING Q351 24 23 22 21 20 19 18 X351 456kHz 17 16 15 14 13 R-CH OUT L-CH OUT MO/ST MPX IN IF OUT MPX VCO VCC AM MIX OUT AM OSC IN REG FM IF AM OSC PHASE (AM/FM) PHASE STEREO FM DET IC303 LA1832S FM IF DET./ FM MPX./AM IF AM IF IN GND SD IN BALUN L341 FE301 FM FRONT END 8765 4 32 1 AM GND FM 75ohms SO301 ANTENNA TERMINAL FM +B VT 1 23 456 78 9 10 11 12 CF351 FM IF FM IF FM IF AM IF AM IF +5V CF301 Q301 CF302 T351 CF352 +5V TP301 +5V FM +B ZD351 VOLTAGE REGULATOR +B Q360 X352 4.5MHz X IN X OUT VSS AOUT 22 21 20 +5V 19 18 17 16 15 14 13 12 IF REQ IF IN MO/ST FM VDD MUTE FM IN FM AM IN DO PD AIN CL DI CE 1 3456 7 8 9 10 11 XL-1700/1700C TUNER PWB SD FM ST DO CL DI CE A_12V TUN_L TUN_R D_GND A_GND TO MAIN PWB 11 10 9 8 7 6 5 4 3 2 1 CNS301 IC302 LC72131 PLL(TUNER) TO MAIN PWB DISPLAY PWB M_GND 7 7 M_12V 6 6 5 5 4 4 D_GND 3 3 P_CONT 2 2 USWD5.6V 1 1 CNW701 SW711~713 SW718~720 SW725~728 SW709 SW710 RESET Q701 LED701 LED702 GND LED704 LED703 GND LED PWB 1 4 X701 8MHz X702 32.768kHz LCD701 FL DISPLAY 5 38 CD LID MOTOR DRIVER IC804 TA7291S 123 56789 SWITCHING M801(246-6) CD LID OPEN/CLOSE M Q806 Q804 5 VLC3 6 VLC2 7 VLC1 8 VDD 9 OSC2 10 OSC1 11 VSS 12 XI 13 XO 14 MMOD 15 VREF 24 VREF+ 16 CLID_SW 17 KEY1 18 KEY2 COM0 COM3 SEG0 SEG33 41 100 67 IC701 IX0043SJ SYSTEM MICROCOMPUTER/ FL DRIVER CD-STB 66 CD-RES 65 CCE 64 BUCK 63 BUS3 62 BUS2 61 BUS1 60 BUS0 59 PU-IN 58 GVSW 33 CLID_DW 57 CLID_UP 56 DIMMER 54 LIGHT 53 VSM RESET POWER SYS_STOP REMOCON DI DO CL CE CLE SURR P-MUTE CD+B DATA ST SD B-LIGHT 47 P-CONT 23 32 37 38 39 25 26 27 28 40 43 45 46 48 49 50 51 41 44 Q807 CD-STB 10 CD-RES 9 CCE 8 BUCK 7 BUS3 6 BUS2 5 BUS1 4 BUS0 3 PU-IN 2 CD-RW 1 CNW704 LED801 LED PWB 10 9 8 7 6 5 4 3 2 1 TO CD PWB SWITCH PWB SW802 CD LID TO MAIN PWB Q702 Q703 RX701 REMOTE SENSOR Q707 Q708 Q709 SWITCHING Q706 SWITCHING P_STB 1 1 PROTECT 2 2 CNW703 CE 1 1 DI 2 2 CL 3 3 DO 4 4 STEREO 5 5 SD 6 6 VSM 7 7 DATA 8 8 CLE 9 9 D_GND 10 10 P_MUTE 11 11 CD+B 12 12 SURROUND 13 13 CNW702 Figure 19 BLOCK DIAGRAM (1/3) - 19 -

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– 19 –
XL-1700/1700C
Figure 19 BLOCK DIAGRAM (1/3)
ANTENNA
TERMINAL
AM Band
Coverage fL
FM MUTE
LEVEL
AM IF
FM 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
FM +B
+5V
FM +B
+5V
T302
T306
T351
CF301
CF302
CF352
CF351
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
14
24
13
12
11
10
9
8
7
6
5
4
3
2
1
PLL(TUNER)
11
10
9
8
7
6
5
4
3
1
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
4
3
2
1
FE301
FM
FRONT
END
TP301
456kHz
X351
Q351
Q360
ZD351
TUNER PWB
11
10
9
8
7
6
5
4
3
2
1
SD
FM
ST
DO
CL
CE
DI
A_12V
D_GND
TUN_L
TUN_R
A_GND
TO
MAIN PWB
CNS301
SWITCHING
RESET
SWITCHING
SWITCHING
Q701
Q702
Q703
COM0
COM3
SEG0
SEG33
REMOCON
P—CONT
VDD
32.768kHz
8MHz
38
5
4
1
1
100
67
66
65
64
63
62
61
60
59
58
33
57
56
54
53
39
48 49 50
32
47
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
38
37
13
12
10
9
X701
X702
OSC1
OSC2
XO
XI
CLID_SW
SW711~713
SW725~728
SW709
SW718~720
SW710
KEY1
KEY2
18
17
16
SYSTEM MICROCOMPUTER/
FL DRIVER
IC701
IX0043SJ
DATA
ST
SD
51 41 44
B-LIGHT
DI
CL
DO
CE
28
27
26
25
SURR
P-MUTE
CD+B
46
45
43
CLE
40
DISPLAY PWB
Q708
Q707
Q709
Q706
GND
LED701
LED702
GND
LED704
LED703
LED PWB
TO
MAIN PWB
TO
CD PWB
Q806
Q804
Q807
CD LID
MOTOR DRIVER
7
6
5
4
3
2
1
7
6
5
4
3
2
1
M_GND
M_12V
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
1
2
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
BUS1
BUS2
BUS3
BUCK
CCE
CD-RES
CD-STB
1
2
3
5
6
7
8
9
LED PWB
M
CD LID
OPEN/CLOSE
1
2
1
2
PROTECT
P_STB
TA7291S
CNW701
CNW702
CNW703
SW802
CNW704
IC804
LED801
M801(246-6)