4. TROUBLE SHOOTING
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Check TP1
VCC of TCXO
VCC
≥
.8V
Check the PM7540
No
Yes
Check TP
.4V
≥
Voltage
≥
0.4V
Check the MSM77
No
Yes
Check TP3
19. MHz Signal
Check soldering and
components
No
Yes
TCXO is OK