Nokia 2116 Service Manual 07rh66ant

Nokia Customer Care

2115i/2116/2116i (RH-66)

Mobile Terminals

Antenna Description and

Troubleshooting

Issue 1 03/2005 Company Confidential ©2005 Nokia Corporation

2115i/2116/2116i (RH-66)
Antenna Description and Troubleshooting

Contents Page

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

Visual Quality Requirements ....................................................................................................................3

Failures and Corrective Measures.............................................................................................................. 4

PIFA Antenna ................................................................................................................................................4

Damaged RF Feed or Ground Pins........................................................................................................ 5

Damaged IHF Speaker Pogo Pins.......................................................................................................... 5

Wrong Internal Antenna Installed ....................................................................................................... 5

Obstructed IHF Speaker, RF Feed, and Ground Pads............................................................................. 7

Grounding of Display Frame .....................................................................................................................8

RF Connector Failure .................................................................................................................................. 8

RUIM Card Flap Grounding .......................................................................................................................9

Testing the CDMA Antenna ...................................................................................................................... 10

Calibration Factors ....................................................................................................................................10

Calibration Factor for PCS1900 Frequency ........................................................................................10

Measurement Procedure .........................................................................................................................10

Testing the GPS Antenna (2115i/2116i) ............................................................................................... 11

Calibration Factor for GPS ......................................................................................................................11

Measurement Procedure .........................................................................................................................11

Page 2 ©2005 Nokia Corporation Company Confidential Issue 1 03/2005

2115i/2116/2116i (RH-66)

Nokia Customer Care Antenna Description and Troubleshooting

Introduction

The mobile terminal incorporates an internal antenna. This antenna arrangement is used
for AMPS/Cell and PCS frequency bands. The internal antenna assembly consists of a
Planar Inverted-F Antenna (PIFA) used for the cellular engine and an Inverted-F antenna
(IFA) used for the GPS engine, which is placed on the side of internal antenna body.

Visual Quality Requirements

Following are the minimum acceptable visual quality requirements of the internal
antenna assembly:

• Gloves must be used when handling antennas. Do not touch the antenna radiator
with bare hands.

• No visual cracks or mechanical defects.

• No oil, dirt, or particles are present on the parts.

• Radiator must be aligned with the plastic housing.

• GPS antenna contacts must be inside the plastic housing.

• Radiator must be flat with no warping.

• All pins must be at the same level.

Issue 1 03/2005 ©2005 Nokia Corporation Company Confidential Page 3

2115i/2116/2116i (RH-66)
Antenna Description and Troubleshooting

Failures and Corrective Measures

The internal antenna is assembled into the D-cover as shown in Figure 1. If no internal
antenna is installed, the antenna gain is degraded by more than 25 dB.

Internal antenna

Internal antenna

PWB shield

• If the internal antenna is missing, install one.

• If the radiator looks obviously damaged, replace the internal antenna.

PIFA Antenna

The internal antenna includes a planar-inverted F antenna (PIFA) radiator and an
inverted F antenna (IFA) radiator (GPS antenna radiator) attached to a plastic carrier. An
integrated hands-free (IHF) mini speaker is integrated inside the plastic.

Figure 1: D-cover assembly

Main antenna
radiator (PIFA)

GPS antenna
radiator (IFA)

Figure 2: Internal antenna

Note: The GPS antenna is only functional on the 6115i and 6116i models.

Page 4 ©2005 Nokia Corporation Company Confidential Issue 1 03/2005