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RM-11 Series
Troubleshooting manual
Nokia RM-11 Series Troubleshooting Manual
Antennas
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Also See for RM-11 Series
:
Troubleshooting manual
(70 pages)
,
Disassembly
(6 pages)
,
Service manual
(5 pages)
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Table of Contents
Troubleshooting
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Table of Contents
Table of Contents
Failures and Corrective Measures
Missing Internal Antenna Cap
Missing Antenna Radiator
Missing GPS Antenna, Damaged GPS Feed/Ground Pin, or Damaged Heat Stake
RF Feed Pin/Ground Pin, IHF Speaker Pins in C-Cover Missing or Damaged
Obstructed RF Feed/Ground Pads, GPS Feed/Ground Pads, IHF Speaker Pads
CDMA or GPS RF Connector Failure
Display Assembly
Missing or Damaged Baseband Shield
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CC Technical Documentation
RM-11 Series Transceivers
Troubleshooting - Antennas
©2005 Nokia Corporation
Issue 2 09/2005
Confidential
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Summary of Contents for Nokia RM-11 Series
Page 1
CC Technical Documentation RM-11 Series Transceivers Troubleshooting - Antennas ©2005 Nokia Corporation Issue 2 09/2005 Confidential...
Page 2: Table Of Contents
RF Feed Pin/Ground Pin, IHF Speaker Pins in C-cover Missing or Damaged ..5 Obstructed RF Feed/Ground Pads, GPS Feed/Ground Pads, IHF Speaker Pads ..6 CDMA or GPS RF Connector Failure ..............7 Display Assembly ..................... 8 Missing or Damaged Baseband Shield..............10 ©2005 Nokia Corporation Page 2 Confidential Issue 2 09/2005...
Page 3: Troubleshooting - Antennas
This troubleshooting guide addresses potential failures that can affect the antenna performance of the RM-11 phone, and discusses methods for correction of these failures. Failures and Corrective Measures Figure 1: RM-11 phone, front and back view ©2005 Nokia Corporation Issue 2 09/2005 Confidential Page 3...
Page 4: Missing Internal Antenna Cap
If no antenna or no radiator is installed, the antenna gain will be degraded by more than 25 dB. ©2005 Nokia Corporation Page 4 Confidential Issue 2 09/2005...
Page 5: Missing Gps Antenna, Damaged Gps Feed/Ground Pin, Or Damaged Heat Stake
RF Feed Pin/Ground Pin, IHF Speaker Pins in C-cover Missing or Damaged GPS antenna IHF speaker pogo pins RF ground pogo pin RF feed pogo Figure 5: Inside view of the C-cover ©2005 Nokia Corporation Issue 2 09/2005 Confidential Page 5...
Page 6: Obstructed Rf Feed/Ground Pads, Gps Feed/Ground Pads, Ihf Speaker Pads
If the GPS feed pad is obstructed, removed, or covered, then the GPS antenna feed leg will not touch the PWB. If the ground pad is obstructed, removed, or covered, then the ground spring clip will not touch the PWB. ©2005 Nokia Corporation Page 6 Confidential...
Page 7: Cdma Or Gps Rf Connector Failure
• GPS RF output — Connects to the GPS antenna matching circuits • RF connector — Connects to the coaxial cable If the RF input is not connected properly to the RF output, replace the RF connector. ©2005 Nokia Corporation Issue 2 09/2005 Confidential...
Page 8: Display Assembly
If the plated area of the display frame is cracked or the metal plating is peeled off, then the grounding of the display shield and frame will not be guaranteed. If this is the case, replace the frame. ©2005 Nokia Corporation Page 8 Confidential...
Page 9
For the RM-11 frame, the whole top area is fully plated. If the wrong display shield or frame is installed, replace it with a correct one. ©2005 Nokia Corporation Issue 2 09/2005 Confidential...
Page 10: Missing Or Damaged Baseband Shield
Check the spring fingers on the baseband shield to ensure that they are raised up so that they make contact with the PWB when installed. If damaged, install a new baseband shield. ©2005 Nokia Corporation Page 10 Confidential...
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