Read Sharp LL-T1803 (serv.man7) Service Manual online
LL-T1803-E/P
CIRCUIT DIAGRAM
6 – 8
SW2
MENU
D7
1N4148
MLL34B
SW3
SELECT
D1
LED
SW4
INPUT
SW5
DOWN
SW6
UP
R1
10K
D3
1N4148
MLL34B
JP1
PH_9
SW1
POWER
D4
1N4148
MLL34B
D5
1N4148
MLL34B
D2
1N4148
MLL34B
D6
1N4148
MLL34B
1
2
4
3
5
A
K
4
3
5
Gr
1
Re
3
G
2
1
2
4
3
5
1
2
4
3
5
1
2
4
3
5
A
1
2
4
3
A
K
A
K
A
K
A
K
1
2
3
4
5
6
7
8
9
KEY_DOWN#
KEY_SELECT#
KEY_MENU#
KEY_INPUT#
KEY_UP#
SOFT_PWR#
LED_AMBER
LED_GREEN
GND
TO INTERFACE BD
KEY_DOWN#
KEY_SELECT#
KEY_MENU#
KEY_INPUT#
KEY_UP#
SOFT_PWR#
LED_AMBER
LED_GREEN
GND
1
2
K
5
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
KEY SW BD
