Figure 8-68. Receiver Front End Circuit - Motorola APX 3000 Detailed Service Manual

Schematics, Boards Overlays, and Parts Lists: Main Board Block: VHF (84012512001_A)
IF302M20
IF
1 DC_LIN_1_8V_A
IN
IF303M20
IF
1 DIG_CTRL_RXV
IN
RF_RX_VHF_F1_C
C330M20
C367M20 C332M20 C334M20
TL_RX_VHF_FE_IN
27PF 15PF 27PF 5.6PF
1 RF_RX_VHF_F1_D
IN
IF
IF301M20
L313M20
L327M20 L312M20
39NH
120NH 120NH
RF_RX_VHF_F1_B
C333M20 C335M20
27PF 43PF
C331M20
C366M20
18PF
18PF
E302M20
DC_LIN_RX_VHF_LNA_A
1 2
DC_LIN_RX_VHF_LNA_D R312M20 R313M20
10K 33
R310M20
75K
DIG_CTRL_RXV_A
Q304M20
MUN5212T
BC858CD
Q303M20
3 Q303M20 2 5
22K
BC858CD
1
R311M20
120K
DC_LIN_RX_VHF_LNA_E DC_LIN_RX_VHF_LNA_B
C338M20 C340M20
4.7UF 330PF
RF_RX_VHF_LNA_A
L315M20
68NH
C336M20 C339M20
6.8PF RF_RX_VHF_F1_E 22PF
RF_RX_VHF_LNA_B
D301M20
MMBD352
L314M20 DNP C370M20
39NH 1PF
C337M20
R380M20
18PF
10
DC_LIN_RX_VHF_LNA_C
C342M20
C341M20
330PF 4.7UF
L316M20
72NH
C343M20
RF_RX_VHF_LNA_C RF_RX_VHF_F2_A RF_RX_VHF_F2_E
330PF
RF_RX_VHF_LNA_D RF_RX_VHF_F2_C
C345M20 C347M20
R381M20
TL_RX_VHF_L2F
27PF 15PF
10
R314M20
C360M20
1.2K
15PF
C344M20 L318M20 L319M20
U304M20 120NH 120NH
1 1PF
BFR380F
RF_RX_VHF_LNA_F
RF_RX_VHF_F2_D
RF_RX_VHF_LNA_E R315M20
C346M20 C348M20
10 RF_RX_VHF_F2_B 18PF 18PF
L317M20
10NH
RF_RX_VHF_F2_F
C349M20 C351M20 C353M20 C357M20
R316M20
27PF 5.6PF 6.8PF 330PF
0
L320M20 L321M20
39NH 39NH
C350M20 C352M20 C354M20
27PF 43PF 18PF
8-123
RF_RX_VHF_FE_OUT
R317M20 IF304M20
L329M20
IF
30NH 0
1
OUT
C368M20
C369M20
24PF
1.5PF
DNP

Figure 8-68. Receiver Front End Circuit