Model: IC-2GAT / IC-4GAT Bulletin: B2702 Subject: When servicing the radio, the technician may cause failure of the +5 V source by improperly replacing crystal X-3. We have seen cases of this occurring. Information: When replacing reference crystal X-3, the physical location of the crystal is critical due to close spacing of coil L-17. 1. Make sure the leads of X-3 are insulated with tubing to prevent shorting. If a short does happen the VCO buffer signal will be shorted to ground and cause PLL unlock. 2. It is suggested that the body of the crystal as well as the leads be insulated to prevent contact with L-17 in the VCO circuit. 3. Do not trim the leads of the replacement crystal as all of the supplied length is required.