Troubleshooting Flow Chart - HYT TC-610P Service Manual

Troubleshooting Flow Chart

Transmit Circuit
Low Tx
power
Check antenna
No Tx audio
Check audio
path (MIC,
VR200, D104 )
connection Q 401, Q402, Q403
Start
No
Tx LED not lit
transmission
No
Normal power
supply?
Yes
No
D602 red
LED lit?
Yes
Check Tx
path
Check Q400 ,
88
89
TC-610P Service Manual
Replace
D602
Check power
supply
No
Tx VCO Check Tx
locked? VCO
Replace
D602
Check APC
circuit