Motorola EP450 Service Manual

VHF 146-174 MHz PCB 8486342Z13-C Schematic Diagrams, Overlays, and Parts Lists 6-15
HKLN4216A November 24, 2003
UP
8
3
F1
5
LEDBL
0
4
DATA
REF STD LIMITED KEYPAD
R3 NOT PLACED
R4 NOT PLACED
R5 NOT PLACED
#
GND
J1
DISPLAY MODULE
CONNECTOR
R15 NOT PLACED
R2 NOT PLACED
C5 NOT PLACED NOT PLACED
C7 NOT PLACED NOT PLACED
D3 NOT PLACED
D4 NOT PLACED
D5 NOT PLACED
D6 NOT PLACED
D7 NOT PLACED
D8 NOT PLACED
R13 NOT PLACED
R14 NOT PLACED
GND
GND
C1 NOT PLACED NOT PLACED
7
1
2
DOW
N
F2
CLK
VDDD
C3 NOT PLACED NOT PLACED
C6 NOT PLACED NOT PLACED
C8 NOT PLACED NOT PLACED
R9 NOT PLACED
R10 NOT PLACED
*
LCD_SEL
6
MAIN BOARD
CONNECTO
R
GND
GND
GND
17
J2-18 18
J2-16
16
J2-1
7
15
R10
130 K
R6
100K
J2-1 5
J2-12 12
10
J1-1 0 G1
J2-1 0
QSMG-H799
D8
R15
33 0
NC
NC
QSMG-H799
D4
D5
QSMG-H799
100K
R1
D1
QSMG-H799
9
22 K
NC
J2
J2-23 23
R3
J2-20 20
J1-3 3
J2-11 11
J2-1 1
QSMG-H799
D6
J2-2 2
J2-22 22
D3
QSMG-H799
J1-7 7
J1-2 2
J2-25
25
J2-26 26
D7
QSMG-H799
C7
150pF
DNF
0.1uF
C4
R1 3
33 0
47 0
R12
22 K
R8 R9
J2-24 24
NC
NC
43 K
J2-4 4
J2-6 6
5
J1-4 4
47 0
J1-5
NC
NC
R1
1
QSMG-H799
D1
1
1
2
3
D1 0
QSMG-H799
1
2
3
SWITCH
S3 2
1
2
3
SWITCH
S3 1
SWITCH
S2 9
1
2
3
SWITCH
S3 0
3
SWITCH
S2 8
1
2
3
2
3
SWITCH
S2 7
1
2
1
2
3
SWITCH
S2 6
1
1
2
3
SWITCH
S2 5
S2 3
1
2
3
SWITCH
S2
4
SWITCH
S2
2
1
2
3
SWITCH
2
3
SWITCH
S2 1
1
2
3
1
2
3
SWITCH
S2 0
1
1
2
3
SWITCH
S1 9
1
2
3
SWITCH
S1 8
8
J2-2 8
SWITCH
S1 7
J2-19 19
J2-8
NC
J1-8 8
NC
DNF
NC
J2-3 3
NC
C8
150pF
DNF
QSMG-H799
D2
NC
Vddd
Vddd
150pF
C6
DNF
J1-6 6
150pF
C1
J2-30
G2
D9
QSMG-H799
NC
J2-7 7
J2-29
G1
NC
NC
NC
NC
13 K
R7
5
R4
43 K
J2-27 27
J2-5
9
330
R14
14
NC
NC
Vddd
J1-9
J2-13
13
J2-1 4
13 K
R2
Vddd
J2-21 21
NC
NC
NC
C2
150pF
R5
NC
C5
DNF
130K
DNF
150pF
J1-1 1 G2
C3
150pF
LEDBL
COL
J1-1 1
DATA
CLK
LCD_SEL
LEDBL
LEDBL
ROW
KEYPAD
9
J2-9
Figure 6-13. VHF (146-174 MHz) Keypad Board Schematic Diagram

Motorola EP450 Specifications

General

Channel Capacity	16 channels
Operating Temperature	-30°C to +60°C
IP Rating	IP54
Frequency Range	VHF: 136-174 MHz, UHF: 403-470 MHz
Weight	Approximately 350g (with standard battery)