Motorola APX 1000 Detailed Service Manual page 1053

Schematics, Boards Overlays, and Parts Lists: Keypad Board M1.5 (84012686001)
8.6 Keypad Board M1.5 (84012686001)
V_2.755D
V_2.755D
C2003
C2023
100PF 12PF
V_2.755D
17
P2005
(COL,ROW)
(4,2) - H/L
(4,1) - SCAN
(4,0) - CALL
KP_ROW_2
KP_ROW_1
KP_ROW_0
SOFTWARE TO DETERMINE VALUE
EXPANSION
18
BOARD ID
P2005
C1 C2
100PF 100PF
DNI
DNI
1
M1
S19
SWITCH
1
2
S20
P2005
SWITCH
1
P2005
2
P2005
P2005
P2005
P2005
S21
SWITCH
1
2
P2005
VCC5V
E2002
V_2.755D
R2500 R2502
10K 10K
DNI
DNI
R2531 R2533
R16
10K 3.3K
560
DNI
KEYPAD CONTROL
FL1
EMIF061005M12
KP_ROW_0 1
I1
KP_COL_4 2
I2
KP_ROW_1 3
I3
KP_ROW_2 4
I4
5
I5
6
I6
3 R6 33
5 R7 33
7 R8 33
R9
9 33
12
R1 R2
100K
14 100K
C26
C23 C25
100PF 100PF
100PF
KEYPAD_WHITE_LED
13
USED TO BE VSW_5.4
R19
560
KEYPAD_WHITE_LED
12 KP_ROW_A 6
O12 P2005
11 KP_COL_E
O11
10 KP_ROW_B 8
O10 P2005
9 KP_ROW_C 10
O9 P2005
8
O8
7
O7
P2005
P2005
P2005
P2005
P2005
P2005
R3 R4
100K 100K
P2005
C29
100PF
P2005
Figure 8-111. Keypad Board Overall Circuit Schematic (Basic)
8-225
VCC5V
E2001
4
P2005
C2050 C2051 C2052
0.1UF 100PF 12PF
GROUND CONTACTS
R10
33
11 1
P2005 M2
R5
100K
1
2
15
16
19
20
G1
G2