Figure 8-184.Keypad Matrix Circuit (Basic) - Motorola APX 1000 Detailed Service Manual

8-384
KP_ROW_4
S1
1 2
KP_ROW_3
S2
1 2
KP_ROW_2
S3
1 2
KP_ROW_1
S4
1 2
KP_ROW_0
S5
1 2
Figure 8-184. Keypad Matrix Circuit (Basic)
S6 S11
1 2 1 2
S7 S12
1 2 1 2
S8 S13
1 2 1 2
S9 S14
1 2 1 2
S10 S15
1 2 1 2
(COL,ROW)
(0,4) - HOME
(0,3) - 1
(0,2) - 4
(0,1) - 7
(0,0) - *
(1,4) - LEFT
(1,3) - 2
(1,2) - 5
(1,1) - 8
(1,0) - 0
(2,4) - DOWN
(2,3) - 3
(2,2) - 6
(2,1) - 9
(2,0) - #
(3,2) - COMPUTER
(3,1) - RIGHT
(3,0) - UP
(4,2) - H/L
(4,1) - SCAN
(4,0) - CALL
S16 S19
1 2 1 2
S17 S20
1 2 1 2
S18 S21
1 2 1 2
Schematics, Boards Overlays, and Parts Lists: Keypad Board (84012282001)
KEYPAD CONTROL
FL1
EMIF061005M12
KP_ROW_0 1 12 KP_ROW_A
I1 O12
KP_COL_A
47 2 11 KP_COL_0
P2001 I2 O11
KP_ROW_1
3 10 KP_ROW_B
I3 O10
49 KP_COL_B 4 9 KP_COL_1
P2001 I4 O9
KP_ROW_2
5 8 KP_ROW_C
I5 O8
KP_COL_C
51 6 7 KP_COL_2
P2001 I6 O7
FL2
EMIF061005M12
KP_ROW_3 1 12 KP_ROW_D
I1 O12
53 KP_COL_D 2 11 KP_COL_3
VCC5V
P2001 I2 O11
KP_ROW_4 3 10 KP_ROW_E
I3 O10
55 KP_COL_E 4 9 KP_COL_4
P2001 I4 O9
5 8
I5 O8
6 7
I6 O7
C25
C23
100PF
100PF
GROUND CONTACTS
1
M1
1
M2
1
M3
50
P2001
52
P2001
54
P2001
56
P2001
58
P2001
NC
NC
C30
C31
100PF
100PF