Figure 7-97. Hue4040A Receiver Mixer Schematic - Motorola ASTRO Digital XTL 5000 Detailed Service Manual

Schematics, Component Location Diagrams, and Parts Lists: HUE4040A (UHF Range 2) Main Board
MIXER_RF_IN
C5389
9.1pF
+24.5 dBm I/P from the injection amp
LO
R5388
51
NU
C5374
9.1pF
C5380
L5392
12nH
5.1pF
NU
NU
6881096C74-B
RECEIVED RF
C5377
C5379
L5381
8.2nH
12pF 8.2pF
L5382
C5390
L5384
12nH
8.2nH
6.8pF
NU
R5389
0
L5383
L5380 R5381
12nH 3.3nH
0
NU
R5382 C5378 C5381
R5380
470
470
6.2pF
5.6pF
NU
NU
NU NU
C5375
9.1pF
THE RECEIVER INPUT SIGNAL AND THE INJECTION SIGNAL
GENERATED BY THE RECEIVE SYNTHESIZER ARE MIXED
TO PROVIDE A 109.65MHz I-F SIGNAL.
109.65 MHz I. F.
*T5381*
1
L5386
5
6.8nH
2
4
R5385
R5384
3
180 180
replace,2585040Y01
C5385
C5383
.01uF
.01uF
D5380
L5385
8.2nH
HIGH SIDE
INJECTION C5382
C5388
SIGNAL
.01uF .01uF
R5383
*T5380* R5386
180
180
1
5
L5387
6.8nH
2
4
3
replace,2585040Y01
C5391
L5390
68nH
33pF
R5387
47
C5386
L5388
68nH
33pF
D5381
8.2nH
L5389

Figure 7-97. HUE4040A Receiver Mixer Schematic

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IF
May 25, 2005