CCS Technical Documentation NPD-1 Series Transceivers Troubleshooting — Antenna Issue 1 11/2002 Confidential Nokia Corporation
NPD-1 Troubleshooting — Antenna Page 2 Nokia Corporation CCS Technical Documentation Confidential Issue 1 11/2002
CCS Technical Documentation NPD-1 Troubleshooting — Antenna Contents Page No Troubleshooting - Antenna ............................................................................................ 5 Relevant Documents ................................................................................................. 5 Failures and Corrective Measures ...............................................................................5 Internal antenna not installed or unplated internal antenna installed ........
NPD-1 Troubleshooting — Antenna Page 4 Nokia Corporation CCS Technical Documentation Confidential Issue 1 11/2002
CCS Technical Documentation NPD-1 Troubleshooting — Antenna Troubleshooting - Antenna This troubleshooting guide addresses potential failures that will affect the antenna performance of the phone, and discusses methods for correction of these failures. Relevant Documents For additional information, refer to the Eagle Antenna Electromechanical Specifications (DMS03311-EN-2.0) and the Eagle Antenna Module VQD (DMS00188-EN-1.2).
NPD-1 Troubleshooting — Antenna CCS Technical Documentation Figure 3: Stamped contact spring clips missing Bottom antenna clip bent or missing The bottom antenna clip is located near the bottom of the phone in the D-cover. A properly installed bottom antenna clip is shown in Figure 4. Figure 4: Properly installed bottom antenna clip If the bottom antenna clip is bent or missing, then it should be carefully replaced with a new one.
CCS Technical Documentation NPD-1 Troubleshooting — Antenna The whip will perform 2 dB better than the internal antenna in free space. The whip will perform up to 3 dB better than the internal antenna in talk position. Figure 5: Properly installed whip antenna Ungrounded display frame The display frame is normally grounded by two spring clips (Figures 6). The figure shows the display frame grounding locations. If clips are missing or bent, replace light guide with good one.
NPD-1 Troubleshooting — Antenna Page 8 Nokia Corporation CCS Technical Documentation Confidential Issue 1 11/2002
