Icom Ic705 Service Manual Updated Jun 2026

Deducting 2 points for the missing mainboard schematics and lack of troubleshooting flowcharts. However, for what it covers (RF board, PLL, filters, PA, power management), it is accurate, thorough, and a model example of a modern SDR-based service manual. If you own an IC-705 and plan to keep it for a decade, —even if you never open the case, it will help you diagnose whether a fault is user-resettable or requires a bench technician.

The antenna connector was another beast. He needed a replacement SMA mount. The service manual included the Icom part number: 8850004010 . He didn't have the part, but he had a generic chassis-mount SMA connector in his junk box. He compared the dimensions on the printed schematic with his generic part. icom ic705 service manual

: The external power cable uses an L-shaped barrel connector with an outer diameter of 5.5mm and an inner diameter of 2.5mm . Deducting 2 points for the missing mainboard schematics

Aligning the internal high-stability clock to ensure exact transmit and receive frequencies. The antenna connector was another beast

If you cannot obtain the official service manual, here are some alternatives:

He found the spot where his tweezers had slipped. A tiny SMD capacitor, labeled C504 on the board and on the schematic, had been vaporized. The service manual didn't just show the location; it listed the component value: 10pF, 50V, NP0 type.