LG GB220 - Keypad Interface

- 52 -
LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. TECHNICAL BRIEF
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
3.11 Keypad Interface
Figure 3-11-1 MAIN KEY STRUCTURE
Change the connection from pull-down to pull-up
VOL_DOWN
Key
(080702)
Delete 10Kohm
VOL_UP
(080715)
150R206
R208 150
LEFT
SEND
UP
SW206SW205
SW203SW202 SW204
SW201SW200
150
1
2
3
4
R207
CN200
VA203 VA204
SEVY0005402
ICVS0505500FR
VA202
MENU
SW211
SW210
SEARCH
VRTC_2V0
SW207
STAR
OK
SW209SW208
RIGHT
END
DOWN
SHARP
Clear
KP_OUT5
KP_IN4
KP_IN1
KP_IN0
KP_OUT0
KP_OUT3
KP_IN2
KP_IN3
KP_OUT1
END_KEY
KP_OUT2