Service Manual Regency Polaris

Hi, I am new to Forum and I need help with a
Transceiver. I would like to get this up and running so I can pass it along to someone who might be able to use it.

The radio is a Regency Polaris Model MT5500XL . If a service manual or a schematic
for this is available, if anyone knows where I might locate one that would be highly appreciated.

Possibly if someone has worked on these please let me know.

Thank you, Jim.