NEC AccuSync LCD72VM User Manual page 158

MODEL LCD72VM SCHEMATIC DIAGRAM KEYPAD BAORD (7/9)
+5V
R189
470 1/16W
R187 4.7K
R184
VOLUME
1
1K 1/16W
Q106
GND GND
+5V +3.3V_VDD
R191
4.7K 1/16W
R154 1K 1/16W
LED_G 1
KEY_AUTO
R180 220 1/16W
KEY_RIGHT
R158 220 1/16W
KEY_ONOFF
R160 220 1/16W
GND
1/16W
VOL
VOL
SPKR_L+
LINE-IN-L
GND
R152
100 1/16W
Q101
PMBS3906 CN602
1
LED_GREEN
3
5
7
9
11
C154 C155 SPKR_L+ 13
LINE-IN-L
15
0.001uF 0.001uF
CON16A
GND
600 OHM
FB105
CN601
FB106
1 2
3 4
STANDBY
5 6
7 8 MUTE
9 10
SPKR_R+
11 12
LINE-IN-R
13 14
CONN
GND GND
2
LED_ORANGE
4
6
8
10
12
SPKR_R+
14
LINE-IN-R
16
GND
GND
10-8
+12V +5V
120 OHM(NC)
R150 1K 1/16W
R181 1K 1/16W
C178 C151
NC NC
GND
+3.3V_VDD
R153
100 1/16W
Q102
PMBS3906 1
KEY_MENU
R157 220 1/16W
KEY_LEFT
R159 220 1/16W
C156 C157
0.001uF 0.001uF
KEY_AUTO
GND
KEY_MENU
KEY_RIGHT
KEY_LEFT
KEY_ONOFF
AUDIO_STDBY
AUDIO_MUTE
LED_O
LED_G
VOLUME
AUDIO_STDBY
AUDIO_MUTE
+5V
R192
4.7K 1/16W
LED_O
R155 1K 1/16W
KEY_AUTO 2
KEY_MENU 2
KEY_RIGHT 2
KEY_LEFT 2
KEY_ONOFF 2
AUDIO_STDBY 2
AUDIO_MUTE 2
LED_O 2
LED_G 2
VOLUME 2