Only lead-free solder (Alloy Composition: Sn-3.0Ag-0.5Cu) should be used for repairs performed on this apparatus. Important Note This transceiver is assembled using Pb (lead) free solder, based on the RoHS specification. Your cooperation in pointing out any inconsistencies in the technical information would be appreciated. While we believe the information in this manual to be correct, Vertex Standard assumes no liability for damage that may occur as a result of typographical or other errors that may be present. As described in the pages to follow, the advanced microprocessor design of the VX-261 Transceiver allows a complete alignment of this transceiver to be performed without opening the case of the radio all adjustments can be performed from the front panel, using the Alignment Mode menu. In most cases one side has only chip components (surface-mount devices), and the other has either a mixture of both chip and leaded components (trimmers, coils, electrolytic capacitors, ICs, etc.), or leaded components only. Each side of the board is referred to by the type of the majority of components installed on that side ( Side A or Side B ). Two PCB layout diagrams are provided for each double-sided board in this transceiver. Attempts by non-qualified persons to service this equipment may result in permanent damage not covered by the warranty, and may be illegal in some countries. Servicing this equipment requires expertise in handing surface-mount chip components. EC128U90C Introduction This manual provides the technical information necessary for servicing the VX-261 UHF FM Transceiver. 1 UHF FM Transceiver VX-261 Service Manual Vertex Standard LMR, Inc Vertex Standard LMR, Inc.
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