Nokia 3205 Service Manual 09rm11rf
CC Technical Documentation
RM-11 Series Transceivers
Troubleshooting - RF (Part 1)
Issue 1 02/2004 Confidential ©2004 Nokia Corporation
RM-11
Troubleshooting - RF (Part 1) CC Technical Documentation
Contents Page
RF Troubleshooting ....................................................................................................... 3
Equipment List for RF Troubleshooting ......................................................................3
Phoenix Service Software ............................................................................................4
RF (Manual Control) Components in Phoenix ......................................................... 5
Observing Tx Output Spectrum on Analyzer............................................................ 7
Other RF Parameters in Phoenix............................................................................... 9
RF Tuning Parameters in Phoenix .......................................................................... 11
RF AGC Status Components in Phoenix................................................................ 12
CDMA In-Call Testing ..............................................................................................12
CDMA in Call Testing (Low Gain) ........................................................................ 13
CDMA in Call Testing (High Gain)........................................................................ 14
CDMA in Call Testing (AMPS).............................................................................. 15
Summary of Typical Cell Band PDM Readings ........................................................16
Summary of Typical PCS Band PDM Readings .......................................................17
Tx PDM Characteristic Curves (Phone Call Mode) ..................................................19
Rx PDM Characteristic Curve (Phone Call Mode) ...................................................19
Key RF Performance Tests in Call Mode ..................................................................19
Tx Tests................................................................................................................... 19
Rx Tests................................................................................................................... 20
Supply Lines Measurement Using Phoenix............................................................ 21
12 RF-related Supply Lines Distribution................................................................ 22
Supply Lines Distribution by RF Components....................................................... 23
12 Supply Lines Resistance to Ground................................................................... 23
Top RF-related Failures Seen in FLALI ....................................................................24
Top RF-related Failures Seen in FINUI ....................................................................24
Page 2 ©2004 Nokia Corporation Confidential Issue 1 02/2004
RM-11
CC Technical Documentation Troubleshooting - RF (Par t 1)
RF Troubleshooting
The RM-11 features 1900MHz PCS CDMA, 800MHz Cell CDMA and AMPS, an internal
antenna, GPS, an FM radio, a RUIM card, a color LCD, a VGA camera, and a flashlight.
PCS TX Split-band SAW Filter
Cell TX PA
PCS TX PA Cell Isolator
GPS
Connector
GPS LNA
and Filter
PCS
Isolator
PCS
Duplexer
Cell
Duplexer
Diplexer
Cell TX SAW Filter
PCS TX Switch
PCS TX Driver “Hornet”
Cell TX Driver “Tomcat” SIM Card
Robin TX Up-converter
RF Connector
VGA Camera
PCS RX FR
SAW Filter
RX IC “Alfred”
Cell RX RF
SAW Filter
VCO
PLL IC
Figure 1: RM-11 RF components
VCTCXO Inverter VCTCXO UEM
GPS BB IC GPS RF IC
RX IF AMPS Filter
RX IF CDMA Filter
GPS TCXO
UPP
FM Radio IC
Batman RX Downconverter
Memory
Flashlight
Figure 2: RM-11 Baseband components
Equipment List for RF Troubleshooting
Use the following equipment to troubleshoot the RM-11 RF:
• Computer with Phoenix
• Agilent 8960 CDMA call box
Note: (If 8960 is not available, then a Signal Generator is needed.
Issue 1 02/2004 ©2004 Nokia Corporation Confidential Page 3
RM-11
Troubleshooting - RF (Part 1) CC Technical Documentation
• Power supply
• Diagnostic test jig
• RF connector snap cable
• Spectrum analyzer
• Active FET probe
• Tomahawk headset and universal headset for FM radio
824.04 - 848.97 MHz
TX I
TX VHF LO
CELL 346.2 MHz
PCS 416.2 MHz
TX Q
346.2=173.1*(2)
416.2=208.1*(2)
256.2=128.1*(2)
TX IF
CELL 173.6 MHz
PCS 208.1 MHz
°0
1
2
°90
UHF LO
CELL 997.14 - 1022.07 MHz, 30 kHz Step
PCS 2058.10 - 2118.05 MHz, 50 kHz Step
TX Block
CELL
1850.00 - 1909.95 MHz
PCS
30 kHz Steps
50 kHz Steps
RX I
RX VHF LO
CELL 256.2 MHz
PCS 256.2 MHz
RX Q
1
2
Figure 3: RF troubleshooting equipment diagram
Phoenix Service Software
In the RF environment, Phoenix SW provides 10 components for troubleshooting:
• Phone Control in DSP
• RF Main Mode in RF
• CDMA Control in DSP
•RF PDM in RF
• Gen I/O in RF
• RF Register R/W in RF
°0
°90
RX Block
RX IF
CELL 128.1 MHz
PCS 128.1 MHz
869.04 - 893.97 MHz
CELL
1930.00 - 1989.95 MHz
PCS
30 kHz Steps
50 kHz Steps
•UHF Synthesizer in RF
• Batch Tune in RF
• RF Tuning in RF
•RF AGC Status in RF
Page 4 ©2004 Nokia Corporation Confidential Issue 1 02/2004
RM-11
CC Technical Documentation Troubleshooting - RF (Par t 1)
RF (Manual Control) Components in Phoenix
c Phone Control in DSPc Phone Control in DSP
Figure 4: Phone Control dialog box in DSP
d RF Main Mode in RFd RF Main Mode in RF
Figure 5: RF Main Mode dialog box in RF
Issue 1 02/2004 ©2004 Nokia Corporation Confidential Page 5
RM-11
Troubleshooting - RF (Part 1) CC Technical Documentation
e CDMA Control in DSPe CDMA Control in DSP
Figure 6: CDMA Control dialog box in DSP
f RF PDM in RFf RF PDM in RF
Figure 7: RF PDM dialog box in RF
Page 6 ©2004 Nokia Corporation Confidential Issue 1 02/2004
RM-11
CC Technical Documentation Troubleshooting - RF (Par t 1)
Observing Tx Output Spectrum on Analyzer
CDMA signal obtained in Local mode by turning modulation ON
dBm
0
-10
-20
-30
-40
-50
-60
-70
-80
CDMA signal on channel 384
1
-90
-100
Start: 834.020000 MHz Stop: 839.020000 MHz
Res BW: 30 kHz Vid BW: 30 kHz Sweep: 50 ms
6/23/03 3:55:47 PM HP8562E,007
Figure 8: Tx output spectrum
To observe a Tx waveform using a spectrum analyzer:
1. Enable Local Mode on the Phone Control dialog box.
Figure 9: Enabling Local Mode on the Phone Control dialog box
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RM-11
Troubleshooting - RF (Part 1) CC Technical Documentation
2. Select Cell (CDMA) in the Band field, and Rx/Tx (Tx path enabled) in the Mode
field on the RF Main Mode dialog box.
Figure 10: RF Main Mode dialog box
3. Select the Rho ON check box in the State area on the CDMA Control dialog box.
Figure 11: CDMA Control dialog box
4. Adjust the three Tx AGC settings for the proper output power level on the RF
PDM dialog box.
Figure 12: RF PDM dialog box
Page 8 ©2004 Nokia Corporation Confidential Issue 1 02/2004
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