Figure 7-134.Huf4017A Receiver Front-End Schematic (Sheet 1 Of 2) - Motorola ASTRO Digital XTL 5000 Detailed Service Manual

Schematics, Component Location Diagrams, and Parts Lists: HUF4017A (700-800 MHz) Main Board
9.3V_FROM_FGU
5V_FE
FE_FILTER
RF_IN
LO_IN
RF_ATTN_1_A
6881096C74-B
IF6251
9.3V
VN_B6261
Q6252
5V
IF6257
5V
C6252
R6251
VN_B6259,VN_B6260
.01uF
1K
VN_B6251
R6252
22K
Q6250
R6250
22K
VN_B6252
IF6252
FE_FILTER
AUX
R6253
1K
TP6254
1
C6267
.01uF
VN_B6262
L6259
1uH
TP6253
C6273
IF6253
47pF
9.3V_TO_IF
FE_FILTER
Q6251
Part Series
6200-1
IF6254
IF6258
9.3V_TO_IF
C6254
Q6253
R6259
200
.01uF
R6254
200
C6260
.01uF
L6254
B6250
22nH
C6262 C6263
03S10
1 2
OUT IN
.01uF .01uF
TP6255
1
C6269
D6250 D6251
.01uF
R6258
1K
TP6257
1
R6255
D6252
TP6256
1
1K
C6275
.01uF
TP6258
1
B6251
C6278 MD365 C6279
2 1
IN OUT
.01uF .01uF
L6262
22nH
C6282
.01uF
R6256
200
C6286
.01uF
R6257
Q6254
22K
C6253
5V
.01uF
R6282
10K
C6259 R6276
1K
VN_B6256
.01uF
Q6255
L6253
C6265
22nH 47K
47K
.01uF
C6298 C6299
470pF 1000pF
VN_B6254
L6256
1uH
C6293
GND
2
39pF
U6252
C6270
AT266
47pF
C6296
3
47pF
D6253
D6258
1 2
AGC/Attenuator circuit
L6263
22nH
C6283
.01uF
R6277
200
C6287
.01uF
MAEPF-27839-O
Figure 7-134. HUF4017A Receiver Front-End Schematic (Sheet 1 of 2)
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May 25, 2005