Motorola ASTRO Digital XTL 5000

May 25, 2005 6881096C74-B
5-54 Troubleshooting Charts: Flowcharts
5.6.40 Low or No TX Injection Signal (700–800 MHz)
Figure 5-42. Low or No TX Injection Signal (700–800 MHz)
MAEPF-27811-O
Approx.
5.5 - 6V on
Q6764-C?
START
Low or No TX
Injection Signal
No
Yes
Check RF path
from TX VCO
Check Q6764 and
DC Bias Circuitry;
replace if
necessary
Approx.
5.5 - 6V on
Q6765-C?
No
Yes
Check Q6765 and
DC Bias Circuitry;
replace if
necessary
Approx.
8.5 - 9V on
Q6766-C?
No
Yes
Check Q6766 and
DC Bias Circuitry;
replace if
necessary