Motorola ASTRO Digital XTL 5000

6881096C74-B May 25, 2005
Troubleshooting Charts: Flowcharts 5-53
5.6.39 Low or No RX Injection Signal (700–800 MHz)
Figure 5-41. Low or No RX Injection Signal (700–800 MHz)
MAEPF-27810-O
Approx.
5V on
Q6762-C?
START
Low or No RX
Injection Signal
No
No
Yes
No
Yes
Yes
Approx.
4.5V (–1V) on
Q6763-D?
62
Ohms across
R6801?
Check RF path
from RX VCO
Replace
Q6763
Check Q6762 and
DC Bias Circuitry;
replace if
necessary
Replace R6801
and Q6763