If you purchased your FT710 from a major dealer, many of them will sell you the service manual at cost. This is often the safest route because they ensure you get the revision level matching your serial number (e.g., FT710 Rev.3 vs Rev.4 boards).
Mods.dk is a reputable repository for amateur radio documentation. You can find user-contributed scans of the FT710 service manual here, but verify the revision date. Early FT710 models (2022-2023) have different PA biasing than late 2024 models. yaesu ft710 service manual
Often considered the most valuable part of the manual, the block diagram provides a high-level "roadmap" of the transceiver. It visually separates the radio into logical sections (Receiver Front End, Transmitter Power Amplifier, PLL Unit, Main Unit, etc.). For the FT-710, this is crucial for identifying where the RF chain splits from the IF/DSP chain. If you purchased your FT710 from a major
Unlike older rigs, the FT710 uses a mix of physical trim pots (on the main board) and software DSP registers. The service manual provides a step-by-step guide to: You can find user-contributed scans of the FT710