Hytera TM-610 - Troubleshooting Flow Chart; VCO Check

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Troubleshooting Flow Chart
Normal power
supply?
VCO
Check
Check power supply
circuit of 8C circuit
No
Rx oscillates ? And
CV voltage is normal?
Yes
Q706 works
normal?
No
`
Q703 outputs
normally?
Check Q703
Normal
feedback?
Check Q102
Check power
supply circuit.
Check CPU data
circuit.
16.8MHz
oscillates?
Q705 works
normal?
Replace Q706
Replace
Q705
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No