Figure 8-55. Mnut4000A/C/E Mixer And If Filter Circuits - Motorola APX 7000 Detailed Service Manual

Schematics, Boards Overlays, and Parts Lists: Transceiver (RF) Boards: UHF1/VHF
IN
R597
0
3
IN
DIG_BAND_SELECT
C505
0.1UF C504
100PF
C502
L501
TL_RX_B1_MIX_IN 1000PF
24NH
IN
U501
AS211334
C501
1
2PF
J3
DNP
2
GND
L511
7.5NH
3
J2
C510
1000PF
TL_RX_B2_MIX_IN
IN
C527
5.1PF
C526 L508
L509
C503
6.8NH
22PF
10NH
22PF
DC_LIN_3V
IN
T505
059248278
C528
TL_RX_LO 100PF
P1 S1
1 3
IN
S2
R512 2
100K
DNP
P2 S3
6 4
5
NC
DC_LIN_1_8V
U502
U502
NC7WZ04
NC7WZ04
4 1 6
NC
T503
059248278
6 C511
V2
100PF
P1 S1
5 1
J1
S2
4
V1
P2 S3
6
NC
U502
VCC
NC7WZ04
GND
C506 C508 C512
0.1UF 1000PF 33PF
U506
1 15
GND1 MIXBIAS
2 14
INB GND4
3 13
INA RF_M
4 12
LG2 RF_P
5 11
LG1 GND3
C529
100PF
R501
51
DNP
S1
3
S2
2
C509 C513
1000PF 100PF
S3
4
5
NC
3
2
4
5
C523 L503
220NH
470PF
T504
C515
059248278
6.8PF
P1
1
R502
68
P2
6
L502
C514
47NH 43PF
E501
1 2
C517
R504 R506
0.1UF
3.3K 150
R503
24K
2 5 Q501
Q501
BC858CD BC858CD
R505
180K
C518
1000PF
FL501 L505
L504 C524 C519
31B01
150NH
390NH 27PF 18PF
1 4
IN OUT
C516
2.7PF

Figure 8-55. MNUT4000A/C/E Mixer and IF Filter Circuits

8-117
C520 L506
150NH
1000PF
R511
TL_RX_IF_OUT
3.3
OUT
C522
C525
15PF
1PF
R508
47
C521
1000PF
R509
10
R507
2.7K
1 Q503
BFR380F
L507
33NH