Figure 8-192.Keypad Lite Matrix Circuit - Motorola APX 1000 Detailed Service Manual

8-406
KP_ROW_2
KP_ROW_1
KP_ROW_0
Figure 8-192. Keypad Lite Matrix Circuit
(COL,ROW)
(4,2) - H/L
(4,1) - SCAN
(4,0) - CALL
S19
1
SWITCH
2
S20
1
SWITCH
2
S21
1
SWITCH
2
Schematics, Boards Overlays, and Parts Lists: Keypad Lite Board (84012559002)
KEYPAD CONTROL
FL1
EMIF061005M12
KP_ROW_0 1 12
I1 O12
27 KP_COL_E 2 11
P2001 I2 O11
KP_ROW_1 3 10
I3 O10
30 KP_ROW_C 4 9
P2001 I4 O9
5 8
I5 O8
6 7
I6 O7
C27
C22 C24
100PF
100PF 100PF
GROUND CONTACTS
1
M1
1
M2
1
M3
KP_ROW_A 26
P2001
KP_COL_4
KP_ROW_B 28
P2001
KP_ROW_2
C28
100PF