Low Or No Tx Injection Signal (700-800 Mhz); Figure 5-42. Low Or No Tx Injection Signal (700-800 Mhz) - Motorola ASTRO Digital XTL 5000 Detailed Service Manual

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