Read Sharp LL-171ME (serv.man3) Service Manual online
LL-171ME
CIRCUIT DIAGRAM & PWB LAYOUT
7 – 7
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
7/15
KEY
INPUT
Volume/Brightness Control -
Set
Volume/Brightness Control
+
Chanel down
OSD Menu
Chanel up
PORTC1
D3
D2
PORTC0
D7
PORTC0
D5
D1
PORTC7
PORTC7
PORTC1
PORTC2
D6
PORTC3
PORTC1
D0
PORTC2
D4
PORTC2
PORTC3
PORTC0
D11
PORTC11
PORTC9
D8
PORTC10
D15
PORTC14
D10
PORTC12
PORTC13
D13
PORTC8
D9
PORTC15
D12
D14
PORTC6
PORTC5
PORTC6
PORTC5
PORTC6
PORTC4
PORTC4
PORTC5
PORTC4
PORTC15
PORTC10
PORTC10
PORTC9
PORTC12
PORTC11
PORTC9
PORTC8
PORTC13
PORTC15
PORTC8
PORTC14
PORTC14
PORTC12
PORTC11
PORTC13
GND
PORTC3
KPAD3
KPAD6
KPAD2
KPAD5
KPAD4
KPAD1
KPAD0
V33
V33
V33
V50
V33
V33
V33
V33
V33
V33
V33
V33
V33
LED1
(1)
LED2
(1)
HW-PW
(1
)
D[0:7]
(4,5)
RDN
(4)
SYNC-SPD
(2)
CS1N
(4)
D[8:15]
(4,5)
CSON
(4)
PORTC[8:15]
(15)
IRRCVR0
(4)
KEYPAD
BOARD
M= METAL 1%
ALL RESISTORS 1/10 WATT,5% UNLESS NOTED.
ALL CAPACITOR VALUES IN uF UNLESS NOTED.
ALL RESISTORS VALUES IN OHMS UNLESS NOTED.
ALL RESISTORS 25 VOLT IN .1uF UNLESS NOTED.
NOTE : NC MEANS "NOT CONNECTED ON PCB BOARD"
ALL CAPACITORS 50 VOLT & 105"C UNLESS NOTED.
R163
0.5
U33
NC/74LCX541
I0
2
I1
3
I2
4
I3
5
I4
6
I5
7
I6
8
I7
9
GND
10
VCC
20
OE2
19
OE1
1
O0
18
O1
17
O2
16
O3
15
O4
14
O5
13
O6
12
O7
11
0.1u
CP12
JK1
CON8
1
2
3 4
5
6
7
8
SWK6
KEYPAD
RP35
4.7K
D26
BAV99
1
3
2
SWK3
KEYPAD
RP34 4.7K
D21
BAV99
1
3
2
U26
74LCX541
I0
2
I1
3
I2
4
I3
5
I4
6
I5
7
I6
8
I7
9
GND
10
VCC
20
OE2
19
OE1
1
O0
18
O1
17
O2
16
O3
15
O4
14
O5
13
O6
12
O7
11
0.1u
CP11
L25
M80/2012
R164
M80/2012
R162
22
D24
BAV99
1
3
2
J3
CON6
1 2
3
4
5
6
SWK5
KEYPAD
RP21
1K
D20
BAV99
1
3
2
SWK2
KEYPAD
SWK1
KEYPAD
C149
220P
C150
0.1uF
J4
CON8
1
2
3
4
5 6
7
8
D25
BAV99
1
3
2
0.1u
CP13
C147
220P
C146
22P
0.1u
CP9
D23
BAV99
1
3
2
0.1u
CP8
RP22
10K
D19
BAV99
1
3
2
0.1u
CP10
SWK7
KEYPAD
C220
0.1uF
SWK4
KEYPAD
RP20
10K
R161
4.7K
RP23 1K
R165
M80/2012
15-3/DIP
ZD5
D22
BAV99
1
3
2
C145
0.1uF
C148
220P
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