Nokia 2112, rh57 Vari Antenna Description and Troubleshooting

Nokia Customer Care

2112 (RH-57) Series Transceivers

Troubleshooting — Antenna

Issue 1 07/2004 Company Confidential ©2004 Nokia Corporation

2112 (RH-57)
Troubleshooting — Antenna Nokia Customer Care

Contents Page

Introduction ..................................................................................................................................................... 3

Internal Antenna is Missing ..................................................................................................................... 3

Damaged RF Feed Pin or Ground Pin .....................................................................................................4

Wrong Internal Antenna is Installed ...................................................................................................... 4

Obstructed RF Feed or Ground Pads for Internal Antenna or IHF Speaker Pads ....................... 5

Grounding of Display Frame ..................................................................................................................... 6

RUIM Card Flap Grounding ....................................................................................................................... 7

RF Connector Failure ..................................................................................................................................7

Page 2 ©2004 Nokia Corporation Company Confidential Issue 1 07/2004

2112 (RH-57)

Nokia Customer Care Troubleshooting — Antenna

Introduction

This troubleshooting guide addresses potential failures that can affect antenna
performance of the 2112 phone, and discusses methods for correction of these failures.

Figure 1: Model 2112 front and back view

Internal Antenna is Missing

RF feed

IHF speaker
pins

Figure 2: Model 2112 chassis assembly

Ground pin

RF shield

Issue 1 07/2004 ©2004 Nokia Corporation Company Confidential Page 3