This is the "how it works" chapter. It breaks the radio into six stages:
(Requires Motorola Test Box & RSS/CPS)
A proper Motorola GM3688 service manual is an indispensable resource for technicians servicing this radio: it contains detailed schematics, alignment steps, diagnostics, and parts lists required to restore reliable operation. When servicing, follow safety guidelines, use calibrated test equipment, and refer to the manual revision corresponding to the unit’s hardware and firmware version. Motorola Gm3688 Service Manual
The Motorola GM3688 Go to product viewer dialog for this item. This is the "how it works" chapter
However, I can provide a on how to legally obtain it, what is inside the manual, and critical technical data for servicing this radio. The Motorola GM3688 Go to product viewer dialog
For parts and technical support, you can find various Motorola GM3688 options on eBay or Alibaba.