Tait TM9100 Service Manual page 210

If both the maximum and minimum VCO frequencies are correct, then the
Task 29 —
Repair PLL feedback
PLL feedback is suspect.
1.
2.
3.
4.
Figure 9.13 Synthesizer circuitry under the
3
1
210 Frequency Synthesizer Fault Finding
Resolder R542 in position (see
Remove the
VCO BOT
Replace the components L510 (see
(see Figure 9.12).
Confirm that the fault in the radio has been removed. If it has, go to
"Final Tasks" on page
assembly and go to "Final Tasks" on page
VCO BOT
2
Figure 9.12).
can.
Figure 9.13) and IC503
147. If it has not, replace the main-board
147.
can (VHF radio, bottom side)
VCO BOT
© Tait Electronics Limited August 2005
TM9100 Service Manual