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Caltta PH660 Radio Maintenance Manual

This document serves as a comprehensive maintenance manual for the Caltta PH660 Radio, detailing the Level 1 maintenance procedures for version V1.0.

It provides essential information for technicians and service personnel, covering product specifications, functional testing, software upgrade processes, detailed disassembly and reassembly guides, and troubleshooting common issues.

Users will find guidance on hardware components, maintenance flows, and checks required after servicing to ensure optimal performance of the PH660 Radio.

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