Sharp LL-171ME (serv.man3) Service Manual ▷ View online
LL-171ME
CIRCUIT DIAGRAM & PWB LAYOUT
7 – 4
GBE3
GBE6
GRO4
GBO3
GBE1
GBE2
GRO7
GBE0
GBE5
GRO6
GGO3
GGO0
GRO3
GGO7
GRE4
GRE7
GRE6
GGE3
GGO2
GGE1
GGE2
GBO2
GBO4
GBO5
GBO6
GBO7
GRE5
GRO5
GGO5
GBE7
GRE0
GGO1
GBO1
GGE4
GBE4
GRE2
GRE1
GGE6
GGE7
GGO4
GRE3
GGE5
GGO6
GGE0
GBO0
DBE5
DBE3
DBE0
DBE4
DRO3
DRO0
DRO1
DRO6
DRO4
DGE1
DGE3
DGE5
DRO2
DGE7
DGE6
DBE6
DGE0
DRO5
DBE1
DGE4
DBE7
DGE2
DBE2
DRO7
DBO6
DBO2
DBO0
DBO3
DBO5
DBO7
DBO1
DBO4
A7
A16
A13
A10
A14
A17
A2
A15
A11
A5
A3
A12
A9
A4
A18
A6
A1
A19
A8
XTALI
XTALO
D11
D0
D10
D13
D12
D7
D8
D14
D4
D6
D15
D3
D9
D1
D2
D5
DRE2
DRE4
DRE7
DRE5
DRE3
DRE0
DRE6
DRE1
A0
GRO2
GRO0
GRO1
DGO5
DGO0
DGO3
DGO7
DGO2
DGO6
DGO1
DGO4
RDV
RBO6
RRE2
RRO7
RRO1
RGE4
RRO5
RRE6
RRE5
RRE0
RGO5
RBE1
RGE7
RRE7
RGO1
RRO2
RBE2
RBO5
RBO4
RGO6
RBE3
RGE0
RBO3
RBE5
RGE5
RRE1
RBO1
RBE6
RBO7
RGO4
RGO2
RRO4
RRO0
RRE4
RGO7
RBE0
RRE3
RBO2
RRO6
RGE3
RDH
RDK
RGO3
RRO3
RDE
RGO0
RGE6
RBO0
RBE4
RBE7
RGE2
RGE1
VUV5
VUV7
VY0
VUV0
VUV4
VY7
VY4
VUV3
VY2
VUV1
VY6
VUV2
VUV6
VY5
VY3
VY1
V25
V3P
V3P
V25
V25
V25
V25
V25
V25
V25
V25
V25
V25
V25
V25
V25
V25
V25
V3P
V3P
V33
V3P
V3P
V3P
V3P
V3P
V3P
V3P
V3P
V3P
V3P
V3P
V25
TXD
(1,2)
RXD
(1,2)
D[15:0]
(5,7)
GGE[7:0]
(3)
GBE[7:0]
(3)
GRE[7:0]
(3)
GFBK
(3)
GCLK
(3)
GVS
(3)
GHS
(3)
RESET
(1)
VCLK
(9)
VVS
(9)
VHS
(9)
VY[7:0]
(9)
VUV[7:0]
(9)
IRRCVR0
(7)
PSEN
(1)
SDA
(1,3,5)
SCL
(1,3,5)
LVDSEN
(6)
BLEN
(1,8)
LCDPWON
(1)
ADC-SEL
(2,9)
VSDA
(9,11,12,13)
VSCL
(9,11,12,13)
TUB-RET
(9,11,13,14)
VIDEO_SEL1
(14,15)
MARVSEN
(3)
EDID-SEL
(2)
GBLKSPL
(3)
GCOAST
(3)
A[19:0]
(5)
DRE[7:0]
(6)
DGE[7:0]
(6)
DBE[7:0]
(6)
DRO[7:0]
(6)
DGO[7:0]
(6)
DBO[7:0]
(6)
DCLK
(6)
DVS
(6)
DHS
(6)
DE-O
(6)
RDN
(7)
ROMOEN
(5)
ROMWEN
(5)
CSON
(7)
CS1N
(7)
IVPEN
(13)
IVFIELD
(13)
VOL-STB
(8)
VIDEO_SEL0
(14,15)
TTX_RESET
(12)
DSCL
(9)
DSDA
(9)
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.
R115
22
TP19
C93
22pF
R102
22
TP7
R126
22
R130
3.3K
R108
3.3K
R99
33
TP20
Display Port
U21C
PW166B
DRE0
R19
DRE1
T20
DRE2
R18
DRE3
R17
DRE4
T18
DRE5
U19
DRE6
T17
DRE7
V20
DGE0
U18
DGE1
V19
DGE2
W20
DGE3
W19
DGE4
Y20
DGE5
V17
DGE6
U16
DGE7
W18
DBE0
Y19
DBE1
Y18
DBE2
V16
DBE3
U15
DBE4
Y16
DBE5
V15
DBE6
W16
DBE7
W15
DRO0
Y12
DRO1
W11
DRO2
Y11
DRO3
U10
DRO4
V10
DRO5
W10
DRO6
Y10
DRO7
W9
DGO0
Y9
DGO1
W8
DGO2
V8
DGO3
U8
DGO4
Y8
DGO5
Y7
DGO6
W7
DGO7
Y5
DBO0
V6
DBO1
U6
DBO2
W5
DBO3
Y4
DBO4
V5
DBO5
Y3
DBO6
V4
DBO7
Y2
DCLK
W12
DVS
V13
DHS
U13
DEN
Y15
R116
22
RP18
NC/33
R135
470
TP8
RP19
NC/33
RP16
NC/33
C96
0.1uF
TP21
C107
0.1uF
C113
0.1uF
R127
22
TP9
RP9
33
R106
2.2K
C104
0.1uF
C108
0.1uF
R117
220
TP22
R136
NC
TP10
R128
22
R104
22
C106
0.1uF
Power and Ground
U21E
PW166B
GND1
D4
GND2
D7
GND3
D10
GND4
B11
GND5
A12
GND6
D14
GND7
D17
GND8
G17
GND9
K17
GND10
P17
GND11
T19
GND12
U17
GND13
W17
GND14
U14
GND15
W14
GND16
U12
GND17
U11
GND18
U9
GND19
U7
GND20
W6
GND21
W4
GND22
U4
GND23
L4
GND24
K4
GND25
G4
VDD1
C7
VDD2
C18
VDD3
U20
VDD4
V18
VDD5
Y17
VDD6
V12
VDD7
V9
VDD8
Y6
VDD9
V3
VDD10
K3
VCC5
C14
VCC1
C3
VCC2
C10
VCC3
C11
VCC4
B12
VCC6
G18
VCC7
K18
VCC8
P18
VCC9
V14
VCC10
Y14
VCC11
V11
VCC12
V7
VCC13
L3
VCC14
G3
Video Port
U21B
PW166B
VY0
D8
VY1
C8
VY2
B7
VY3
A7
VY4
B8
VY5
D9
VY6
C9
VY7
A8
VUV0
B9
VUV1
A9
VUV2
B10
VUV3
A10
VUV4
D11
VUV5
A11
VUV6
C12
VUV7
B13
VCLK
D12
VPEN
C13
VVS
A14
VFIELD
A15
VHS
B14
TP23
C109
0.1uF
C14
10000pF
R118
22
R168
NC
TP11
R129
470
R137
10/1206
RP8
33
C111
0.1uF
RP15
NC/33
TP24
RP10
33
C118
0.1uF
TP12
C116
0.1uF
R134
NC
R119
22
C101
0.1uF
C112
0.1uF
Misc
U21D
PW166B
A0
P1
A1
P2
A2
N3
A3
N4
A4
R1
A5
R2
A6
T1
A7
T2
A8
R3
A9
U1
A10
U2
A11
R4
A12
T3
A13
V1
A14
W1
A15
V2
A16
T4
A17
U3
A18
Y1
A19
W2
D0
F4
D1
F3
D2
E1
D3
F2
D4
F1
D5
G2
D6
G1
D7
H1
D8
H4
D9
H3
D10
H2
D11
J1
D12
J2
D13
J4
D14
J3
D15
K1
RD
M3
WR
M4
BHEN
N2
ROMOE
M1
ROMWE
L2
RAMOE
L1
RAMWE
K2
CS0
M2
CS1
N1
EXTINT
E2
NMI
D1
RESET
E3
MCKEXT
W13
DCKEXT
Y13
TXD
D3
IRRCVR0
E4
IRRCVR1
D2
PORTA0
C2
PORTA1
B1
PORTA2
B2
PORTA3
A1
PORTA4
C4
PORTA5
D5
PORTA6
B3
PORTA7
A2
PORTB0
A3
PORTB1
C5
PORTB2
D6
PORTB3
B4
PORTB4
A4
PORTB5
C6
PORTB6
B5
PORTB7
A5
MODE2
B6
CPUTCK
A6
CPUTDO
W3
MODE0
A13
RXD
C1
MODE1
U5
CPUTMS
D13
XTALI
P3
XTALO
P4
C121
0.1uF
R167
NC
TP13
C95
22uF/50V
R107
22
C119
0.1uF
R111
22
R113
22
C99
0.1uF
R120
22
TP1
R109
10
TP14
C105
0.1uF
R131
NC
C120
0.1uF
L20
M80/2012
C94
22pF
R172
NC
TP2
TP15
C100
0.1uF
C117
0.1uF
R121
22
R132
470
R112
22
TP3
RP11
33
C115
0.1uF
R174
NC
TP16
C103
22uF/50V
C122
0.1uF
R103
3.3K
Y1
XTAL14.31818
C97
0.1uF
RP17
NC/33
TP4
R124
22
C114
0.1uF
TP17
R101
22
RP13
33
R105
2.2K
R110
4.7K
R114
22
TP5
C110
100U/16V
RP14
NC/33
C102
0.1uF
TP18
R133
3.3K
R125
22
R100
22
C98
0.1uF
Graphics Port
U21A
PW166B
GRE0
M20
GRE1
N19
GRE2
N18
GRE3
N17
GRE4
N20
GRE5
P20
GRE6
P19
GRE7
R20
GGE0
F18
GGE1
E19
GGE2
E20
GGE3
J18
GGE4
H20
GGE5
J19
GGE6
J20
GGE7
K19
GBE0
D16
GBE1
A18
GBE2
C17
GBE3
B18
GBE4
A19
GBE5
B19
GBE6
A20
GBE7
D18
GRO0
K20
GRO1
L17
GRO2
L18
GRO3
L19
GRO4
L20
GRO5
M18
GRO6
M17
GRO7
M19
GGO0
E17
GGO1
C19
GGO2
B20
GGO3
C20
GGO4
E18
GGO5
F17
GGO6
D19
GGO7
D20
GBO0
B15
GBO1
A16
GBO2
C15
GBO3
D15
GBO4
B16
GBO5
A17
GBO6
C16
GBO7
B17
GCLK
H19
GPENSOG
G20
GVS
J17
GHS
G19
GREF
H18
GBLKSPL
F19
GCOAST
F20
GFBK
H17
TP6
RP12
33
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
4/15
PW166
LL-171ME
CIRCUIT DIAGRAM & PWB LAYOUT
7 – 5
A16
A3
D0
D13
D9
A16
D4
IRPn
A2
BOOTWE
A8
A9
A10
D5
A11
A17
A14
D12
D11
ICEn
D10
IA20
A19
A10
D10
D3
A14
A4
D1
A3
A6
FCEn
A15
A1
D14
D2
A13
D7
D15
D1
D8
A11
A13
D5
A17
A6
D14
A2
D13
A12
D12
D9
D6
D8
A1
A4
D6
A9
D11
A18
A19
A18
D3
A7
A12
D4
D0
A7
IA21
A5
A5
D2
A8
A15
D15
D7
V33
V33
V33
V50
V33
V33
V33
V50
ROMOEN
(4)
SDA
(1,3,4)
A[19:1]
(4)
SCL
(1,3,4)
ROMWEN
(4)
D[15:0]
(4,7)
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.
R147
3.3K
U22
24LC32
SDA
5
SCL
6
VCC
8
GND
4
NC0
1
NC1
2
NC2
3
WP
7
C124
22P
R143
3.3K
C126
0.1uF
R142
3.3K
JP4
HDR_30X2/NC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
TP25
C123
0.1uF
JP3
HDR_2X2/NC
1
2
3
4
R138
3.3K
R144
3.3K
R145
3.3K
C125
22P
U23
Flash_8M
VCC
37
VPP
13
GND1
46
GND2
27
D1
29
D9
30
D2
31
D10
32
D3
33
D11
34
D4
35
D12
36
D5
38
D13
39
D6
40
D14
41
D7
42
D15
43
D8
44
D16
45
A15
1
A14
2
A13
3
A12
4
A11
5
A10
6
A9
7
A8
8
A17
17
A7
18
A6
19
A5
20
A4
21
A3
22
A2
23
A1
24
A0
25
A16
48
CE
26
OE
28
WE
11
RP
12
WP
14
BYTE
47
A18
16
C129
47u/25V
R146
3.3K
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
5/15
MEMOR
Y
LL-171ME
CIRCUIT DIAGRAM & PWB LAYOUT
7 – 6
DBE0
DBE3
DGE5
TXE0-
DRE6
DGE1
TXE1-
DBO1
DRE4
DBO3
TXE2+
TXECK-
DBO0
TXO1+
DGO3
TXO0-
DGE3
TXOCK-
DGO1
TXE1+
DGE2
DGO4
TXE0+
TXO3-
DGE4
DGE6
DBE1
DGO0
DRE3
DRO1
DRE2
DGO5
TXO1-
DBE2
DRO5
DGO2
DBO6
DRO7
DRO2
TXE3+
DRE7
DRO0
TXO0+
DBO7
TXO3+
DBE5
DBO4
DBE7
DRE0
DBO5
TXOCK+
DBO2
DGE7
DRE1
TXE2-
DRO3
DGE0
DGO7
DRO6
TXE3-
DRE5
TXO2+
DBE4
DBE6
TXECK+
DRO4
TXO2-
DGO6
DCLK
DE-O
LVDS_ON
LVDPLL
SW-LCD
SW-V33
LLVCC
SW-V33
SW-V33
LLVCC
LLVCC
LLVCC
LLVCC
LLVCC
LLVCC
DHS
(4)
DVS
(4)
DE-O
(4)
DCLK
(4)
LVDSEN
(4)
DRE[7:0]
(4)
DGE[7:0]
(4)
DBE[7:0]
(4)
DRO[7:0]
(4)
DGO[7:0]
(4)
DBO[7:0]
(4)
DRE[7:0]
(4)
DRO[7:0]
(4)
TXE1-
TXECK+
GND
TXO0-
TXO3+
GND
GND
TXO1-
TXO1+
TXO2-
GND
TXECK-
TXE3-
GND
TXO2+
LVCD
TXE2+
TXOCK-
TXE2-
LVCD
TXO3-
TXE1+
TXE0+
GND
TXO0+
TXOCK+
TXE0-
TXE3+
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.
C140
NC/0.1uF
R159
NC/10K
C139
NC/0.1uF
R158
NC/10K
R148
NC
R153
NC
C132
0.1uF
C131
0.1uF
R157
NC
R150
10K
L24
M80/3216
L23
0.5/0805
C142
NC/0.1uF
U24
THC63LVDM83A
Vcc
1
TxIN5
2
TxIN6
3
TxIN7
4
GND
5
TxIN8
6
TxIN9
7
TxIN10
8
Vcc
9
TxIN11
10
TxIN12
11
TxIN13
12
GND
13
TxIN14
14
TxIN15
15
TxIN16
16
R_FB
17
TxIN17
18
TxIN18
19
TxIN19
20
GND
21
TxIN20
22
TxIN21
23
TxIN22
24
TxIN23
25
Vcc
26
TxIN24
27
TxIN25
28
GND
29
TxIN26
30
TxCLKIN
31
/PWRDN
32
PLLGND
33
PLLVcc
34
PLLGND
35
LVDS_GND
36
TxOUT3+
37
TxOUT3-
38
TxCLKOUT+
39
TxCLKOUT-
40
TxOUT2+
41
TxOUT2-
42
LVDS_GND
43
LVDS_VCC
44
TxOUT1+
45
TxOUT1-
46
TxOUT0+
47
TxOUT0-
48
LVDS_GND
49
TxIN27
50
TxIN0
51
TxIN1
52
GND
53
TXIN2
54
TXIN3
55
TXIN4
56
C137
10uF/50V
R149
0
R151
4.7
C133
0.1uF
R155
NC
R156
NC/10
W5
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
C136
0.1uF
R160
10K
C144
0.1uF
C141
NC
C138
NC/0.1uF
C135
0.1uF
R152
10K
C143
NC/0.1uF
U25
NC/THC63LVDM83A
Vcc
1
TxIN5
2
TxIN6
3
TxIN7
4
GND
5
TxIN8
6
TxIN9
7
TxIN10
8
Vcc
9
TxIN11
10
TxIN12
11
TxIN13
12
GND
13
TxIN14
14
TxIN15
15
TxIN16
16
R_FB
17
TxIN17
18
TxIN18
19
TxIN19
20
GND
21
TxIN20
22
TxIN21
23
TxIN22
24
TxIN23
25
Vcc
26
TxIN24
27
TxIN25
28
GND
29
TxIN26
30
TxCLKIN
31
/PWRDN
32
PLLGND
33
PLLVcc
34
PLLGND
35
LVDS_GND
36
TxOUT3+
37
TxOUT3-
38
TxCLKOUT+
39
TxCLKOUT-
40
TxOUT2+
41
TxOUT2-
42
LVDS_GND
43
LVDS_VCC
44
TxOUT1+
45
TxOUT1-
46
TxOUT0+
47
TxOUT0-
48
LVDS_GND
49
TxIN27
50
TxIN0
51
TxIN1
52
GND
53
TXIN2
54
TXIN3
55
TXIN4
56
R154
NC
C130
10uF/50V
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
6/15
LV
D
S
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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