HYT TM-600 Service Manual page 82

Transmit
Check transistor
Bias voltage and
low pass network
Repair
transmission
network.
Normal Power？
Yes
Completed
Yes Current is
normal?
No
Completed
Completed
No output
Power supply
Yes
works normally?
No
Control voltage is
normal?
High
Check driver stage.
Driver stage is
normal?
No
Check the suited
network.
Yes
Normal power?
Replace Q109
Yes
Normal power?
No
Replace Q110
81
TM-600 SERVICE MANUAL
No
Check power
supply circuit
Low
Check Q603 &
Q604
VCO
Yes
maintenance
Flow chart