Low Or No Tx Injection Signal (136-174 Mhz); Figure 5-10. Low Or No Tx Injection Signal (136-174 Mhz) - Motorola ASTRO XTL 1500 Detailed Service Manual

Troubleshooting Charts: Flowcharts
5.6.8 Low or No TX Injection Signal (136–174 MHz)
START
Low or No TX
Injection Signal
at TP6769
Approx.
7.5V on
C3935/C3815
Approx.
7.5V on
C3755/R3807
Approx.
9V on
R3815/C3872
Check components
between Q3758
and TP6769
6815854H01-A
Check components
No
around Q3760-C,
?
Yes
Check components
No
?
Yes
Check components
No
?
Yes
Figure 5-10. Low or No TX Injection Signal (136–174 MHz)
if OK, replace
Q3760
around Q3759,
if OK, replace
Q3759
around Q3758,
if OK, replace
Q3758
AEPF-27811-O_VHF
June 15, 2005
5-19