Philips LX390SA Service Manual page 16

KEY BOARD - COMPONENT LAYOUT
This assembly drawing shows a summary of all possible versions.
For components used in a specific version see schematic diagram and respective parts list.
KEY BOARD - CIRCUIT DIAGRAM
A
B
6-4
3139 113 3531 pt4 dd wk0403
1800 A3 1801 B1 1802 B2 1803 B2
1 2
3802 3803
390R 270R
GND_D GND_D GND_D
Note : Some values may varies, see respective parts list for correct value.
1 2
KEY BOARD - CHIP LAYOUT
This assembly drawing shows a summary of all possible versions.
For components used in a specific version see schematic diagram and respective parts list.
1804 B2 1805 B3 2800 B1 3802 A2
3
1800
1
KEY0
2
S2B-EH
3804 3805
220R 150R
GND_D GND_D GND_D
8239_210_97184...for 3139 113 3531 pt4_dd wk0403
3
6-4
3803 A2 3804 A2 3805 A3
4
A
GND_D
B
4
3139 113 3531 pt4 dd wk0403