Sharp LL-171A Service Manual ▷ View online
LL-171A-W/B/LL-171G-W/B
CIRCUIT DIAGRAM & PWB LAYOUT
6 – 11
RXO0
-
LVB
0
M
RXE
C-
LVACKM
RXE2
-
LVA
2
M
RXO3
-
LVB
3
M
RXE1
-
LVA
1
M
RXE3
-
LVA
3
M
RXO2
-
LVB
2
M
RXO1
-
LVB
1
M
RXE0
-
LVA
0
M
RXOC-
LVBCKM
PB[0..9]
RXOC+
LVBCKP
LVB1
M
PB7
LVBCKM
PB3
RXE2
+
L
V
A
2P
LVACKP
PA2
LVA2
M
PA5
LVA
3P
PA0
RXO0
+
L
V
B
0P
LVBCKP
PB2
LVA
1P
PA6
LVACKM
PA3
LVB
3P
PB0
LVB
1P
PB6
LVA
2P
PA4
RXO1
+
L
V
B
1P
LVB
2P
PB4
LVB2
M
PB5
LVA1
M
PA7
LVA0
M
PA9
RXE0
+
L
V
A
0P
RXE
C
+
LVACKP
RXO2
+
LVB
2P
LVA3
M
PA1
RXO3
+
LVB
3P
LVA
0P
PA8
LVB3
M
PB1
LVB0
M
PB9
LVB
0P
PB8
RXE1
+
L
V
A
1P
PA[0..9]
RXE3
+
L
V
A
3P
VLCD
C510
0.1uF
+
C509
47uF/25V
C511
0.1uF
R502
0
1/16W
CN503
Pin Header 23
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
PA[0..9]
4
PB[0..9]
4
VLCD
2
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
5/6
5.
P
ANEL INTERF
A
C
E
LL-171A-W/B/LL-171G-W/B
CIRCUIT DIAGRAM & PWB LAYOUT
6 – 12
3
12
LED_G
LEFT
DVI-DDCSET
Standby
Mute
POWER
MODE/SEL
RIGHT
OUT-L+
Mute_key
LED_O
Mute_key
LEFT
MENU
LED_O
LED_GRN
LED_ORANGE
DVI-DSUB SELECT
MENU
DVI-DSUB SELECT
LED_G
POWER
MODE/SEL
RIGHT
OUT-L-
OUT-L+
OUT-R+
OUT-R+
OUT-R-
OUT-R-
OUT-L-OUT-L-
VCPU
VCPU
VCPU
VCPU
VCC5V
VCC12V
VCPU
VCPU
VCPU
R626
10K 1/16W
R607
10K
1/16W
CN601
Pin Header 2x7
1
2
3
4
5
6
7
8
9
10
11
12
13
14
R625
10K
1/16W
R608
100
1/16W
R640
0.5A FUSE
RN601
10K
1/16W
1
2
3
4
2
3
4
8
7
6
5
7
6
5
R633
BEAD 600
C609
0.1uF
C606
0.1uF
C605
0.1uF
R614
10K
1/16W
R634
NC
R605
10K
1/16W
U602
24C16
1
2
3
4
5
6
7
8
A0
A1
A2
GND
SDA
SCL
WP
VCC
R613
10K
1/16W
RN602
10K
1/16W
1
2
3
4
2
3
4
8
7
6
5
7
6
5
R611
470
1/16W
R621
BEAD 600
R622
BEAD 600
C601
0.1uF
R616
4.7K
1/16W
X
601
20MH
z
C608
0.1uF
R635
NC
U601
W78E65P-4
0
35
21
20
10
14
15
16
17
2
3
4
5
6
7
8
9
43
42
41
40
39
38
37
36
24
25
26
27
28
29
30
31
19
18
32
33
13
11
22
44
12
EA/VP
XTAL1
XTAL2
RESET
INT0/P3.2
INT1/P3.3
T0/P3.4
T1/P3.5
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
P2.0
P2.1
P2.2
P2.3
P2.4
P2.5
P2.6
P2.7
P3.7/RD
P3.6/WR
PSEN
ALE/P
P3.1/TXD
P3.0/RXD
VSS
VCC
P4.3
CN603
1
2
3
4
R638
NC
R636
100
1/16W
FB603
600 OHM
FB602
600 OHM
Q601
PMBS
3906
3
2
1
U203
M
A
X
810S
T
R
3
2
1
VI
RESET
GND
R602
10K
1/16W
R627
10K
1/16W
R609
100
1/16W
R641
0.5A FUSE
R612
NC
R606
10K
1/16W
R604
10K
1/16W
+
C611
1uF/0805
C217
0.1uF
R617
220
1/16W
FB601
0.47OHM 1/10W
C604
22pF
R624
BEAD 600
C615
0.1uF
Q602
PMBS
3906
3
2
1
R618
220
1/16W
C607
0.1uF
R630
BEAD 600
C602
22pF
CN602
Wafer 2x8
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
C613
0.1uF
R632
10K
1/16W
R601
10K
1/16W
R615
10K
1/16W
R619
4.7K
1/16W
R620
BEAD 600
C614
0.1uF
R623
BEAD 600
C610
0.1uF
R631
10K
1/16W
R639
100K
1/16W
R637
0
1/16W
RN603
10K
1/16W
1
2
3
4
2
3
4
8
7
6
5
7
6
5
C612
0.1uF
R610
470
1/16W
onBACKLITE
2
INT
4
4
CSZ
4
DDC_DAT
3
HWRESET
4
DDC_CLK
3
VCPU
2
onPANEL_5V/3.3V
2
VCC5V
2,3
VCC12V
2
Volume
4
RXD
3
TX
D
3
SCL
4
SDA
4
DVI-DDCSET
3
AdjBACKLITE
2
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
6/6
6.
MPU
LL-171A-W/B/LL-171G-W/B
CIRCUIT DIAGRAM & PWB LAYOUT
6 – 13
To Earphone
Jack
Audio-R
+
Audio-R-
Audio-R
+E
Audio-L+
GREEN
YELLOW
POWER
YELLOW
GREEN
Audio-R-
Audio-R
+
Audio
-L
-
Audio-L+
Audio
-L
-
Audio-L+E
POWER
YELLOW
GREEN
R101
510
1/6W
SW1
POWER
SW4
MODE
R102
510
1/6W
D101
LED
1
2
3
CN102
Wafer 2P
1
2
SW5
MENU
SW3
LEF
T
CN104
WAFER 2X7
2
4
6
8
10
12
14
1
3
5
7
9
11
13
R104
100
1/6W
R103
100
1/6W
CN103
Wafer 2P
1
2
SW2
RIGHT
CN101
NC
1
2
3
4
4
5
6
7
8
9
CN105
Phone Jack
10
11
2
3
1
4
5
6
7
8
9
CN106
wire harness 4 pin
1
2
3
4
SW6
INPUT
STANDBY
12V
MUT
E
OUT_R
OUT
_
L
VOLUME
+12V
GND
GND
GND
GND
GND
GND
GND
GND
+12V
+
C201
680uF/25V
+
C202
680uF/25V
CN204
NC
1
2
3
+
C210
1uF
R202
200K
1/16W
C203
0.1uF
C213
0.1uF
CN202
pin header2*7 2mm female
2
4
6
8
10
12
14
1
3
5
7
9
11
13
+
C205
470uF/16V
+
C209
1uF
+
C207
470uF/16V
CN201
PHONEJACK
1
4
5
2
3
R211
20K 1/
16W
C211
100pF
R203
18K
1/16W
R212
220K
1/16W
R210
20K
1/16W
C204
0.47uF/25V
R207
1K
1/16W
C212
100pF
C206
0.47uF/25V
U201
T
D
A
7496L
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
GND
GND
GND
INL
VAROUT_L
VOLUME
VAROUT_R
NC
INR
SVR
STBY
MUTE
GND
OUTR
VS
VS
OUTL
GND
GND
GND
R201
18K
1/16W
R208
1K
1/16W
+
C208
470uF/16V
C214
NC
ع
AU
D
IO
<Reference>
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
1/1
ع
KEYP
AD
LL-171A-W/B/LL-171G-W/B
CIRCUIT DIAGRAM & PWB LAYOUT
6 – 14
R910
4.7K£[
1/8W
ZD904
SML4737A/1
C901
2200P/250V
C929
0.1uF
F902
2A
250V
Q903
2SK2996
R902
330K£[
1/8W
R921
47£[
1/8W
CN901
SOCKET
1
2
3
12V
C926
0.1uF
t
NR901
NTCR
ON/OFF
TO
INVERTER
12V
D903
1N4148
+
C922
1000uF/25V
R903
100K£[
2W
C909
0.1uF
R924
2.4K£[
1/8W
Q902
2PC945P
R913
10K£[
1/4W
+
C923
1000uF/16V
GND
IC903
HTL431
SW901
MR-21
1
3
2
4
R904
1M£[
1/4W
C908
0.1uF
D911
FCQ10A06
3
2
1
2
R911
4.7K£[
1/8W
C905
0.0015uF/2KV
PR901
VARISTOR
470V
L904
O
O
O
T901
POWER
X'FMR
1
9
3
5
6
7,8
7,8
10,11
L903
Q901
2PA733P
C921
0.001uF/500V
GND
R920
47£[
1/8W
C910
4700pF
F903
3A
60V
+
C904
82uF/450V
5V
R906
750K£[
1/4W
L902
L
1
4
2
3
N.C
GND
R926
1K£[
1/8W
C911
NC
C912
0.0047uF/250V
R901
330K£[
1/8W
R905
1M£[
1/4W
R925
1K
1/8W
+
C924
470uF/16V
D910
FCH10A15
3
2
1
2
GND
R916
10K£[
1/4W
D901
FR107
SG6841
IC901
SG6841
13
4
7
2
56
8
R907
750K£[
1/4W
ZD901
RLZ22B
R915
10£[
1/4W
5V
R928
1K£[
1/8W
R908
5.1£[
1/8W
R922
33K
1%
CN102
CONN
1
2
3
4
5
6
7
8
9
10
11
12
+
C925
470uF/16V
ZD903
HZ5C1
DIM
DIMMING
ZD902
HZ12B2
R914
24K£[
1/8W]
C928
N.C
R912
100£[
1/8W
R927
0£[
1/8W
+
C906
10uF/50v
R917
0.39£[
2W
C927
0.1uF
R909
4.7K£[
1/4W
ON/OFF
R929
100£[
1/4W
FB901
BEAD
F901
2A
250V
IC902
PC123FY2
4P
1
2
4
3
C902
2200P/250V
C903
0.47uF/250V
GND
C920
0.001uF/500V
C907
0.1uF
D902
PS102R
-+
BD901
2KBP06M
1
4
3
2
R923
3.6K
1%
12V
POWER for PWPC1742HDP1
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
1/3
<Reference>
Click on the first or last page to see other LL-171A service manuals if exist.