TM9100 Service Manual Frequency Synthesizer Fault Finding 225
© Tait Electronics Limited August 2005
Task 41 —
VCXO Tank Circuit
If the CCTM checks indicate that the VCXO tank circuit is faulty, repair
the circuit as follows:
1. If not already done, remove the
VCXO BOT can.
2. Locate and repair the fault in the VCXO tank circuit (Q501, D501,
D502, XL501 and associated components) (see Figure 9.17).
3. Confirm the removal of the fault and go to Step 4. If the repair failed,
replace the main-board assembly and go to “Final Tasks” on page 147.
4. Replace all cans.
5. Repeat Task 40
to confirm the removal of the fault. If the repair
failed, replace the main-board assembly and go to “Final Tasks” on
page 147.
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