Low Or No Rx Injection Signal (380-470 Mhz And 450-520 Mhz); Figure 5-23. Low Or No Rx Injection Signal (380-470 Mhz And 450-520 Mhz) - Motorola ASTRO XTL 1500 Detailed Service Manual

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5.6.21 Low or No RX Injection Signal (380–470 MHz and 450–520 MHz)
START
Low or No RX
Injection Signal
Approx.
5V on
C5318?
Yes
Approx.
4.5V on
pin 14
of U5303?
Yes
Check RF path
from RX VCO
Figure 5-23. Low or No RX Injection Signal (380–470 MHz and 450–520 MHz)
June 15, 2005
Check Voltage
No
Regulator U5301
No
5 V
on C5335?
Yes
Check R5324,
R5325, R5326
Troubleshooting Charts: Flowcharts
No
Check L5299
6815854H01-A