Nokia 2366i - Cell Phone - Verizon Wireless Guide

Nokia Customer Care
2366i (RM-155)
Mobile Terminals
Issue 2 - February 2007 Company Confidential ©2007 Nokia Corporation
RF Description and
Troubleshooting

2366i (RM-155)
RF Description and Troubleshooting
Page 2 Company Confidential Issue 2 - February 2007
Contents Page
Introduction ..................................................................................................................................................... 5
Preliminary RF Troubleshooting ..............................................................................................................6
RF Troubleshooting Equipment List ........................................................................................................7
Configure Phoenix for RF Troubleshooting ..........................................................................................7
Transmitter RF Troubleshooting .............................................................................................................. 10
Transmitter Schematics ...........................................................................................................................11
Transmitter Troubleshooting Guidelines .............................................................................................13
Transmitter Initial Troubleshooting ......................................................................................................13
DC Power Checks ................................................................................................................................... 14
Cell Tx Setup ........................................................................................................................................... 14
PCS Setup................................................................................................................................................. 16
Transmitter RF Troubleshooting Procedures ......................................................................................17
Failed Test: Tx PA Detector ................................................................................................................. 18
Tx Output Spectrum.............................................................................................................................. 19
Tx RF Component Diagram ................................................................................................................. 20
DC Test Points......................................................................................................................................... 21
TX RF Test Points .....................................................................................................................................22
Receiver RF Troubleshooting .................................................................................................................... 23
Receiver Block Diagram ...........................................................................................................................24
Receiver Schematics .................................................................................................................................25
RF AGC Status ............................................................................................................................................26
Turning on the Receive Path ..................................................................................................................27
Switching the Rx Gain States ................................................................................................................29
Receiver Diagnostic Signal Tracing ......................................................................................................29
Receiver DC and RF Test Points ......................................................................................................... 30
Receiver I and Q Test Points ...................................................................................................................34
Synthesizer Troubleshooting .................................................................................................................... 36
VCTXCO Troubleshooting .........................................................................................................................36
Synthesizer Schematic .............................................................................................................................37
Synthesizer Troubleshooting Setup ......................................................................................................38
Synthesizer Troubleshooting ..................................................................................................................39
Incorrect PLL Frequencies.................................................................................................................... 40
AFC Voltage Troubleshooting .................................................................................................................41
VCTCXO Manual Tuning....................................................................................................................... 42
GPS Troubleshooting................................................................................................................................... 44
GPS RF Block Diagram .............................................................................................................................44
GPS RF Schematic .....................................................................................................................................44
GPS Troubleshooting Setup ....................................................................................................................45
HW Self Test Failure.............................................................................................................................. 46
Oscillator Test Failure........................................................................................................................... 46
CW (Mode 3) Test Failure.................................................................................................................... 47
GPS DC Test Points................................................................................................................................ 47
GPS RF Troubleshooting Setup........................................................................................................... 48
GPS RF Probe Points.............................................................................................................................. 49
Bluetooth Troubleshooting ....................................................................................................................... 50
Bluetooth Schematic ................................................................................................................................50
Test Setup 1 ................................................................................................................................................50

Nokia Customer Care RF Description and Troubleshooting
2366i (RM-155)
Issue 2 - February 2007 Company Confidential Page 3
Test Setup 2 ................................................................................................................................................52
Test Setup 3 ................................................................................................................................................53
Test Setup 4 ................................................................................................................................................54
Test Setup 5 ................................................................................................................................................55
Bluetooth Troubleshooting Flowchart .................................................................................................56
Bluetooth DC and RF Probe Points .......................................................................................................57

2366i (RM-155)
RF Description and Troubleshooting Nokia Customer Care
Page 4 Company Confidential Issue 2 - February 2007
This page intentionally left blank.

Nokia Customer Care RF Description and Troubleshooting
2366i (RM-155)
Issue 2 - February 2007 Company Confidential Page 5
Introduction
The 2366i mobile terminal is based on a tri-mode, code division multiple access or
“CDMA,” dual-band engine and a GPS receiver.
Figure 1: PWB components - top
FM Radio
IC (Not
used)
DC/DC
Converter

2366i (RM-155)
RF Description and Troubleshooting
Page 6 Company Confidential Issue 2 - February 2007
Figure 2: PWB components - bottom
Preliminary RF Troubleshooting
Verify the following if the mobile terminal cannot make a call:
• The mobile terminal is in Normal or Test Mode (i.e., the mobile terminal is
searching for a signal, net server is on).
• The Preferred Roaming List (PRL) is loaded into the mobile terminal (for Normal
mode).
• The mobile terminal is tuned and has passed tuning. Read the tuning parameters
using the Read Parameters component in Phoenix. An untuned mobile terminal
has all zeros in the tuning file.
Coupler
TX ASIC
Cell Duplexer
Diplexer
PCS Duplexer
TX IC
G7100
Bluetooth
VR1B
VPP
GPS LNA
RX circuits
GPS
Connector
Cell/PCS PA
Cell TX Filter
PCS TX Filter
Memory (D3000)
UPP (D2800)
UEMCR D2200
19.2MHz
FBus Tx
MBus Tx/Rx
FBus Rx
VCORE
VSIM
VIO
VR1A
32KHz
VFlash 1
VR3
VANA

Nokia Customer Care RF Description and Troubleshooting
2366i (RM-155)
Issue 2 - February 2007 Company Confidential Page 7
• The call box channel is set for a channel in PRL.
• The SID is correct and entered into the mobile terminal. For Test mode, SID is 4
and paging channel is: 385/Cell and 1175/PCS.
• The VCTCXO is centered properly within tuning limits as described in the
"VCTCXO Manual Tuning" section on page 42.
• The transmitter and receiver are working properly in Local mode. See "Transmitter
RF Troubleshooting"onpage10 and "Receiver RF Troubleshooting"onpage23
for detailed information.
RF Troubleshooting Equipment List
You will need the following equipment for RF troubleshooting:
• Computer with AMS version of Phoenix
• Agilent 8960 CDMA call box (or equivalent)
• Signal generator
• Power supply
• Digital multimeter
• Diagnostic test jig
• Spectrum analyzer
• AMS RF Probe, AAS-10A or AAS-10B
• Oscilloscope
• RF connectors and cables
• High impedance probe (optional)
Configure Phoenix for RF Troubleshooting
1. Ensure that the phone is connected to the computer as shown in "Service
Configurations", in the Service Tools chapter.
2. Start the Phoenix software and set it up with the following controls:
• Troubleshooting > Phone Control
• Troubleshooting > RF > Main Mode
• Troubleshooting > RF > CDMA Control
• Troubleshooting > RF > PDM Control.
See Figure 3.

2366i (RM-155)
RF Description and Troubleshooting
Page 8 Company Confidential Issue 2 - February 2007
Figure 3: Phoenix Control Setup

Nokia Customer Care RF Description and Troubleshooting
2366i (RM-155)
Issue 2 - February 2007 Company Confidential Page 9
3. In the Phone Control window, select the Phone State tab, Local, and Execute.
4. See Table 1 for the remaining settings.
Table 1: Phoenix Settings—RF Test
For Cell For PCS
RF Main Mode window: 1. Select Cell (CDMA)
2. Select Channel (384
3. Select RX/TX mode
4. Select “Set”.
1. Select PCS (CDMA)
2. Select CHannel (600)
3. Select TX/TX mode
4. Select “Set:.
CDMA Control window: 1. Select Mode 1 (IS95/Voice)
2. De-select Default PDM
3. Select Cell Band
4. Select Rho ON
5. Select “Execute”.
1. Select Mode 1 (IS95/Voice)
2. De-select Default PDM
3. Select PCS Band
4. Select Rho ON
5. Select “Execute”.
PDM Control window: Set values:
• PC_DC_DC = -208
• V CTL = -361
• AGC1 = 412 mA
Set values:
• PC_DC_DC = -213
• V CTL = -428
• AGC1 = 372 mA
Set up the Spectrum Analyzer as
indicated:
• Center frequency: 836.52 MHz
• Span: 100 MHz
• Amplitude: 20 dBm
• Attuenuation: auto
• BW: auto
• Center frequency: 1880 MHz
• Span: 100 MHz
• Amplitude: 20 dBm
• Attuenuation: auto
• BW: auto
Typical default values for TX RF
PDM:
Note: these are representative
values only; actual values are set
according to the tuning file. These
settings are for an output power of
20 dBm.
AGC1 = -248
V CTL = -361
PC_DC_DC = 208
Current = 412 mA
AGC1 = -213
V CTL = -428
PC_DC_DC = 265
Current = 372 mA

2366i (RM-155)
RF Description and Troubleshooting
Page 10 Company Confidential Issue 2 - February 2007
Transmitter RF Troubleshooting
Figure 4 is the block diagram for the Tx RF system.
Figure 4: Transmitter system block diagram