Keypad Board - IBM L170 Service Manual

6.3 KeyPad Board

+5V
10/21
R404
620 1/16W
R414
Brightness
PWM0
P.4 PWM0
R415
0 1/16W
1K 1/16W
CN401
BackLight On/Off
R405 4.7K 1/16W
1
PBIAS P.4
2
3 VOL
MUTE
4
STDBY
5
6
C419 C420 C421
NC NC NC
CONN
GND
STDBY
STDBY
MUTE
MUTE
VOL
VOL
10/21
RP401
1 8
P.3 GPIO6
2 7
P.3 GPIO8
3 6
P.3 GPIO3
4 5
P.3 GPIO7
4.7K 1/16W
P.3 GPIO2
R412 4.7K 1/16W
P.3 FUNCTION1
R413 4.7K 1/16W
C435
NC
TO-252
+5V
U401
3
VIN
1
ADJ
C408
+ C409 C410
RT9164-25CG
150uF/25V 0.1uF/16V 0.01uF
GND
10/21
C416
+
22uF/16V
GND
9
P.4 LED_ORANGE
5
P.4 LED_GRN
+3.3V
RP402
10K 1/16W
KEY ENTER
KEY LEFT
KEY_AUTO
KEY RIGHT
KEYON_OFF
MAIN
C434
C430 C431 C432 C433
NC
NC NC NC NC
GND
+2.5V
+5V
2
VOUT
C412 C414 C401
+ C413 +
150uF/25V 0.1uF/16V 0.01uF 47uF/16V
10/21
U106D
74LVC14A
R402
REDLED
8
C429
100 1/16W
NC
R401
GND
6 GRNLED
U106C C428
74LVC14A 100 1/16W
NC
GND
CN402
1
2
3
4
5
6
GND
CONN
SOT-223
U402
3 2
VIN VOUT
1
ADJ
C403 C417
C402 +
AIC1117-33CY
0.1uF/16V 0.01uF 47uF/16V
GND
26
IBM L170 Service Manual
CN403
MAIN
1
GRNLED
2
REDLED
3
KEY_AUTO
4
KEY ENTER
5
KEY RIGHT 6
KEY LEFT 7
KEYON_OFF 8
GND 9
GND
CONN
10/21
CONNECTOR for
POWER/INVERTER
Board
+5V
+3.3V
+ +
C405 C407
0.1uF/16V 0.1uF/16V
C404 C406
150uF/25V 150uF/25V
GND
+T3.3V +3.3V
FB401
NC
C422
C418
AOC
0.1uF/16V 0.01uF
Title
K.B AND CONNECTOR
Size Document Number
B gm5120
Date: Friday, October 25, 2002
CONNECTOR for
KEYBOARD
Rev
A
Sheet 5 of 6