Power Supply; Display Circuit - HYT TM-610 Service Manual

TM-610 Service Manual

5.2 Power Supply

+B supplies power for the radio. D135 and D137 are over-voltage protection diodes. Power-on/off can be controlled via
the software.
Figure 5 Power Supply Circuit
Vout provides power for IC601, IC602 and IC803, which produces 8V, 5V, 3.3V voltage for the circuit.

6. Display Circuit

The display circuit is comprised of CPU (IC502), LCD, LED and other components. The radio can be manually operated
through P1 / P2 / P3 / P4 and ▲ / ▼ keys. Relevant channel information is displayed on the 15-segment LCD in
alphanumeric form.
Figure 6 Display Circuit
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