Rx Rf; Rx Rf—Page 5 - Motorola ASTRO XTS 5000 Detailed Service Manual

6-24 Troubleshooting Charts: RX RF—Page 5
6.25 RX RF—Page 5
6 7
8
Inspect L409,
Measure DC
C416 on side 2.
voltages dac1 at
Remove SH403.
TP401, dac2 at
Inspect components
TP405
Visual
No No Repair
Replace
dac1 = dac2? inspection
defects
PCIC
OK?
Yes Yes
Tune the radio across
Replace
several channels. Monitor
IF Filter
dac1 (2), proportional to
FL403
frequency, about 1.5 Vdc
at 770 MHz, 3.5 Vdc
at 869 MHz
Dac No Replace
tones OK?
PCIC
Yes
Replace
FL401 or
FL402
MAEPF-27474-O
April 15, 2002 68P81094C31-O