26Mhz Bluetooth Buffer; Antenna; Instructions For Antenna Troubleshooting - Nokia RH-29 Series Manual

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RH-29

6b - RF Troubleshooting

26MHz Bluetooth buffer

If the TX, RX or SX troubleshootings does not solve RF failure, do the following tests:

Use DA-17 jig and phone in 'local' mode. Use Phoenix to control the phone.

Set TX on and check the output power on low, middle and high channels. If the power

levels are not OK, check the antenna, antenna connection pads and antenna pins. If there

are big differencies (> 5 dB) between channels, change the antenna. If the levels are OK,

the failure reason is bended center shield or in other part of the phone. Change the

shield and try again. If it is still not functional, refer to BB troubleshooting.

Set RX on, connect signal generator to DA-17 and start RSSI testing. Check the RSSI lev-

els on low, middle and high channels. If the RSSI levels are not OK, check the antenna,

antenna connection pads and antenna pins. If there are big differencies (> 5 dB) between

channels, change the antenna. If the RSSI levels are OK, the failure reason is bended cen-

ter shield or in other part of the phone. Change the shield and try again. If it is still not

functional, refer to BB troubleshooting.

Page 12

Company Confidential

Nokia Customer Care

Issue 1 05/2004

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