Introduction; Whip Antenna - Nokia 6255 Description And Troubleshooting

Nokia Customer Care

Introduction

This troubleshooting guide addresses potential failures that affect antenna performance
of the 6255/6255i/6256/6256i, and discusses methods for correction of these failures.

Whip Antenna

Check the following minimum visual quality standards of the whip assembly:
• No physical cracks or mechanical defects.
• No excess oil, dirt, or particles appear on the parts.
• Whip cap and sheath over the mold parting line (flash or offset) is less
than 0.1 mm.
• NiTi extrusion must completely cover the NiTi wire. No uncovered NiTi wire can
be seen from the tube side.
• Proper printing is present (found on the plastic connector).
• Whip cap must be perpendicular to the NiTi wire (maximum of 5°).
• Antenna straw must not appear twisted, cracked, bent, or discolored.
• No gate flash greater than 0.1 mm anywhere on the assembly.
• Feed contact must appear at a 45-degree angle and must be free from damage,
deformation, or unusual bending.
• Straw must be approximately 5.0mm from the end of the split bottom stop.
Bottom stopper
Telescopic tube
Issue 2 05/2005
Figure 1: Whip antenna assembly
©2005 Nokia Corporation
6255/6255i/6256/6256i (RM-19)
Antenna Description and Troubleshooting
Stubby tower
Feed contact
Connector
Straw.
Company Confidential
Cap.
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