Figure 9.1-25.Pmld4303D Rf Controls Schematic - Motorola ASTRO XTS 2500 Service Manual

9.1-26
RAW_B+
3A
24V
UNSW_B+_1
F500
POS
B500 NEG
DATA
L500
BATT_CODE
390nH
VR500
6.8V
C519
330pF
R522
47K
TG2_SEC_CLEAR
R523
10K 10K 10K 10K
47K
R513 R514 R515 R516
RTA0
RTA1
RTA2
RTA3
VR508
5.6V
C500 C501 C502
910pF 910pF 910pF
VR509
5.6V
VR510
5.6V
VR511
5.6V
Figure 9.1-25. PMLD4303D RF Controls Schematic
August 16, 2007
ABACUS_3V
2.2uH
L501
MECH_SW
C505
0.47uF
C504
470pF
D500
C525 C524 10V
1000pF 33uF VR501
VR513
5.6V VR512
5.6V
VOL
470pF
10K
RFSW_B+
R518
C1
S500
SWITCH
A B
A B
1 4
S1 S4
C2 C3
C2 C3
8 2
R519
S8 S2
47K
C503
910pF
GREEN_LED
RED_LED
6.8K
R505
S501
SWITCH
4 HIGH 3
2
5 1
LOW
C520
VR502
6.8V
R503 R504
390 510
D501
LNJ115W8P0MT
Q501
VHF Schematics, Board Overlays, and Parts Lists
S502
SWITCH
4
EMERGENCY
7
C551
.01uF
R512
47K
VR514
6.8V
100
1
R507
3
PTT
C550
.01uF
VR503
6.8V
R525
10K
100
R508
SB3
VR504
6.8V
C507
.01uF
R526
10K
100
R509
SB2
VR505
6.8V
C508
.01uF
10K
R517
S506
SWITCH
100
R510
2
4
SB1
VR506
6.8V
C509
.01uF
2
1
TAB5 TAB1
S503
SWITCH
A1 B1 2
B2 4
A2
S504
SWITCH
1 A1 B1 2
3 A2 B2 4
S505
SWITCH
1 B1 2
A1
3 B2 4
A2
B1 A1 1
B2 A2 3
6816985H01-B