Nokia 2760 Service Manual

Table of Contents

Quick Links

Download this manual

Nokia Customer Care

Service Manual

RM-258; RM-259 (Nokia 2760)

Mobile Terminal

Part No: 9203122 (Issue 1)

COMPANY CONFIDENTIAL

Table of Contents

Chapters

Table of Contents

Troubleshooting

Summary of Contents for Nokia 2760

Page 2 RM-258; RM-259 Amendment Record Sheet Amendment Record Sheet Amendment No Date Inserted By Comments Issue 1 06/2007 Y Liu Page ii COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 3 Nokia operates a policy of continuous development. Nokia reserves the right to make changes and improvements to any of the products described in this document without prior notice. Under no circumstances shall Nokia be responsible for any loss of data or income or any special, incidental, consequential or indirect damages howsoever caused.
Page 4 WCDMA networks and cause problems to 3G cellular phone communication in a wide area. • During testing never activate the GSM or WCDMA transmitter without a proper antenna load, otherwise GSM or WCDMA PA may be damaged. Page iv COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 5 Use only approved accessories and batteries. Do not connect incompatible products. CONNECTING TO OTHER DEVICES When connecting to any other device, read its user’s guide for detailed safety instructions. Do not connect incompatible products. Issue 1 COMPANY CONFIDENTIAL Page v Copyright © 2007 Nokia. All rights reserved.
Page 7 RM-258; RM-259 ESD protection ESD protection Nokia requires that service points have sufficient ESD protection (against static electricity) when servicing the phone. Any product of which the covers are removed must be handled with ESD protection. The SIM card can be replaced without ESD protection if the product is otherwise ready for use.
Page 8 Batteries' performance is particularly limited in temperatures well below freezing. Do not dispose of batteries in a fire! Dispose of batteries according to local regulations (e.g. recycling). Do not dispose as household waste. Page viii COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 9 Our policy is of continuous development; details of all technical modifications will be included with service bulletins. While every endeavour has been made to ensure the accuracy of this document, some errors may exist. If any errors are found by the reader, NOKIA MOBILE PHONES Business Group should be notified in writing/e- mail. Please state: •...
Page 11 Nokia 2760 Service Manual Structure 1 General Information 2 Service Tools and Service Concepts 3 Baseband Troubleshooting Instructions 4 RF Troubleshooting Instructions 5 Camera Module Troubleshooting 6 System Module Glossary Issue 1 COMPANY CONFIDENTIAL Page xi Copyright © 2007 Nokia. All rights reserved.
Page 15: Table Of Contents
Table 2 Car................................1–7 Table 3 Audio ................................1–7 Table 4 Normal and extreme voltages .........................1–8 Table 5 Current consumption..........................1–9 List of Figures Figure 1 RM-258/259 product picture ........................1–5 Issue 1 COMPANY CONFIDENTIAL Page 1 –3 Copyright © 2007 Nokia. All rights reserved.
Page 17: Rm-258/Rm-259 Product Selection
• Easy flash II system connector • BT combined with FM radio • VGA camera • Ringing volume: 105 dB from 5cm distance • Built-in Vibra • GPRS: Class 10 Issue 1 COMPANY CONFIDENTIAL Page 1 –5 Copyright © 2007 Nokia. All rights reserved.
Page 18: Software Features
Table 1 Power Type Name BL-4B Battery 700 mAh Li-Ion AC-3 Compact charger AC-4 Travel charger AC-5 Compact travel charger CA-44 Charger adapter DC-4 Mobile charger Page 1 –6 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 19: Technical Specifications
Nokia bluetooth headset BH-207 MD-4 Mini speakers Technical specifications General specifications Unit Dimension LxWxT (mm) Weight (g) Volume (cc) Transceiver with BL-4B 87x44x21 67.7 700mAh Li-Ion battery pack Issue 1 COMPANY CONFIDENTIAL Page 1 –7 Copyright © 2007 Nokia. All rights reserved.
Page 20: Battery Endurance
RM-258; RM-259 General Information Battery endurance Nokia measurements of operation times in GSM900/1800 Talk time Battery: BL-4B 700mAh 400 mins Standby time Battery: BL-4B 700mAh 350 hours Note: Variation in operation times will occur depending on SIM card, network settings and usage.
Page 21: Table 5 Current Consumption
The minimum battery cell voltage required for the reset circuitry to turn on. This is not confirmed by measures at pt. Table 5 Current consumption Condition Typical Unit Call (MoU) (E)GSM 900 GSM 1800 GSM 1900 Idle (MoU) Power off Issue 1 COMPANY CONFIDENTIAL Page 1 –9 Copyright © 2007 Nokia. All rights reserved.
Page 25: Table Of Contents
Figure 6 EM calibration concept with JBV-1...................... 2–17 Figure 7 RF-test/BB-tune & flash concept with JBV-1, FPS-10................. 2–18 Figure 8 RF/BB tune& flash concept with MJ-137, FPS-10 ................2–19 Issue 1 COMPANY CONFIDENTIAL Page 2 –3 Copyright © 2007 Nokia. All rights reserved.
Page 27: Service Tools
FLS-4S or to the PROMMER box FPS-11. CA-112DS Easy flash II cable The CA-112DS easy flash II cable is used for connecting phone DC port to the PROMMER facilities (FLS-5, FPS-20). Issue 1 COMPANY CONFIDENTIAL Page 2 –5 Copyright © 2007 Nokia. All rights reserved.
Page 28: Dau-9S
The MBUS cable DAU-9S has a modular connector and is used, for example, between the PC's serial port and module jigs, flash adapters or docking station adapters. Note: Docking station adapters valid for DCT4 products. Page 2 –6 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 29: Fls-4S
• LAN to FBUS/Flashbus and USB conversion • Vusb output switchable by PC command FPS-10 sales package includes: • FPS-10 prommer • Power Supply with 5 country specific cords • USB cable Issue 1 COMPANY CONFIDENTIAL Page 2 –7 Copyright © 2007 Nokia. All rights reserved.
Page 30 • BTEMP and BSI calibration resistor • signal from FBUS to the phone via the parallel jig • control via FBUS or USB • Flash OK/FAIL indication Page 2 –8 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 31 PCS-1 Power cable The PCS-1 power cable (DC) is used with a docking station, a module jig or a control unit to supply a controlled voltage. Issue 1 COMPANY CONFIDENTIAL Page 2 –9 Copyright © 2007 Nokia. All rights reserved.
Page 32 It is made of lead-free rework compatible material. RJ-51 Rework jig To be used with ST-30! RJ-72 Rework jig To be used with rework stencil ST-28. Page 2 –10 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 33 The camera removal tool SS-88 is used to remove/attach the front camera module from/to the socket. SS-93 Opening tool SS-93 is used for opening JAE connectors. Issue 1 COMPANY CONFIDENTIAL Page 2 –11 Copyright © 2007 Nokia. All rights reserved.
Page 34 SX-4 is also needed together with FPS-10 when DCT-4 phones are flashed. XCS-4 Modular cable XCS-4 is a shielded (one specially shielded conductor) modular cable for flashing and service purposes. Page 2 –12 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 35: Service Concepts
Attenuation for: • GSM850/900: 0.3+-0.1 dB • GSM1800/1900: 0.5+-0.1 dB • WLAN: 0.6+-0.1dB Service concepts POS flash concept with FLS-4S Figure 2 POS flash concept with FLS-4S Issue 1 COMPANY CONFIDENTIAL Page 2 –13 Copyright © 2007 Nokia. All rights reserved.
Page 36: Pos Flash Concept With Fls-5
RM-258; RM-259 Service Tools and Service Concepts POS flash concept with FLS-5 Figure 3 POS flash concept with FLS-5 Page 2 –14 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 37: Flash Concept With Fps-10
RM-258; RM-259 Service Tools and Service Concepts Flash concept with FPS-10 Figure 4 Flash concept with FPS-10 Issue 1 COMPANY CONFIDENTIAL Page 2 –15 Copyright © 2007 Nokia. All rights reserved.
Page 38: Rf-Test/Bb-Tune Concept With Jbv-1
RM-258; RM-259 Service Tools and Service Concepts RF-test/BB-tune concept with JBV-1 Figure 5 RF-test/BB-tune concept with JBV-1 Page 2 –16 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 39: Em Calibration Concept With Jbv-1
RM-258; RM-259 Service Tools and Service Concepts EM calibration concept with JBV-1 Figure 6 EM calibration concept with JBV-1 Issue 1 COMPANY CONFIDENTIAL Page 2 –17 Copyright © 2007 Nokia. All rights reserved.
Page 40: Rf-Test/Bb-Tune & Flash Concept With
RM-258; RM-259 Service Tools and Service Concepts RF-test/BB-tune & flash concept with JBV-1, FPS-10 Figure 7 RF-test/BB-tune & flash concept with JBV-1, FPS-10 Page 2 –18 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 41: Rf/Bb Tune& Flash Concept With Mj-137, Fps-10
RM-258; RM-259 Service Tools and Service Concepts RF/BB tune& flash concept with MJ-137, FPS-10 Figure 8 RF/BB tune& flash concept with MJ-137, FPS-10 Issue 1 COMPANY CONFIDENTIAL Page 2 –19 Copyright © 2007 Nokia. All rights reserved.
Page 45: List Of Figures
Figure 21 Test arrangement for of earpiece..................... 3–21 Figure 22 Checking IHF and ring tone by using "Buzzer"................3–22 Figure 23 Checking vibra function by using vibra control ................3–22 Issue 1 COMPANY CONFIDENTIAL Page 3 –3 Copyright © 2007 Nokia. All rights reserved.
Page 46 3–24 Figure 26 Microphone fault flow chart......................3–25 Figure 27 Headset earpiece fault flow chart ....................3–26 Figure 28 Headset microphone fault flow chart ....................3–27 Page 3 –4 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 47: General Baseband Troubleshooting
This means that the phone does not use any current at all when the supply is connected and/or power key is pressed. It is assumed that the voltage supplied is 3.6VDC. The UEMCLite will prevent any functionality at battery/supply levels below 2.9VDC. Issue 1 COMPANY CONFIDENTIAL Page 3 –5 Copyright © 2007 Nokia. All rights reserved.
Page 48 RM-258; RM-259 Baseband Troubleshooting Instructions Troubleshooting flow Figure 9 Troubleshooting when phone cannot be powered on Page 3 –6 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 49: Phone Cannot Be Powered On (Ii)
32 seconds. Unfortunately, the service routine can not be measured. Troubleshooting flow Figure 10 Troubleshooting when phone does not stay on or phone is jammed Issue 1 COMPANY CONFIDENTIAL Page 3 –7 Copyright © 2007 Nokia. All rights reserved.
Page 50: Phone Cannot Be Flashed
Because of the use of uBGA components, it is not possible to verify if there is a short circuit in the control and address lines of MCU (UPP8M) and the memory (flash). Page 3 –8 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 52: Easy Flash Programming Does Not Work
It is not possible to verify if there is a short circuit in control and address lines of MCU (UPP8M) and memory (flash) because BGA package is used in RM-258/259. Page 3 –10 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 53 RM-258; RM-259 Baseband Troubleshooting Instructions Troubleshooting flow Figure 12 Easy flash programming fault Issue 1 COMPANY CONFIDENTIAL Page 3 –11 Copyright © 2007 Nokia. All rights reserved.
Page 54: Display Shows "Contact Service
They are individual test cases, so the below lineup of error hunting's has no chronological order. Use common sense and experience to decide which test case to start error hunting at. Page 3 –12 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 55: The Phone Does Not Register To The Networks, Or The Phone Cannot Make A Call
'buried' in one or more of the inner layers of the PWB. First, check that SIM LOCK is not causing the error by using a Test-SIM card and connect the phone to a tester. Issue 1 COMPANY CONFIDENTIAL Page 3 –13 Copyright © 2007 Nokia. All rights reserved.
Page 57: Sim Related Faults
SIM card. When the power is switched on the phone first check for a 1.8V SIM card and then a 3V SIM card. The phone will try this four times, where after it will display ”Insert SIM card”. Figure 15 Insert SIM card fault Issue 1 COMPANY CONFIDENTIAL Page 3 –15 Copyright © 2007 Nokia. All rights reserved.
Page 58: Sim Card Rejected
The display does not show any information at all. If there is only main or sub display blank, the problem mostly exists in individual display. Replace related display first. For main and sub display blank, refer to troubleshooting flow below. Page 3 –16 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 59: Corrupted Display
Corrupted display Context The display contains missing or fading segments, or color presentation is incorrect. Troubleshooting flow Dead keys Context One or more keys has no function. Issue 1 COMPANY CONFIDENTIAL Page 3 –17 Copyright © 2007 Nokia. All rights reserved.
Page 60: No Backlight For Display Or/And Keys
Context There are 3 kinds of statuses: No backlight for both display and keys; No backlight for only display; No backlight for only keys. Troubleshooting flow Page 3 –18 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 61: Audio Troubleshooting
RM-258; RM-259 Baseband Troubleshooting Instructions Audio troubleshooting Audio troubleshooting using phoenix Figure 18 Phoenix audio test window Issue 1 COMPANY CONFIDENTIAL Page 3 –19 Copyright © 2007 Nokia. All rights reserved.
Page 62: Check Microphone Using "Hp Microphone In Ext Speaker Out" Loop
3. Select “Hp microphone in Ext speaker out” 4. Select "Acc. Detection" as "Off". 5. Select “Loop” as “On” 6. Input sound at microphone port, for example 94dB SPL 1kHz. Page 3 –20 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 63: Check Earpiece Using "Ext Microphone In Hp Speaker Out" Loop
2. Open “audio test” window from “Testing -> Audio test”, as shown in above. 3. In “Buzzer” area, select suitable signal to be played, for example 1 kHz, Strength 5” 4. Select “Volume” as “On” Issue 1 COMPANY CONFIDENTIAL Page 3 –21 Copyright © 2007 Nokia. All rights reserved.
Page 64: Check Vibra Function Using "Vibra Control
3. Select suitable intensity value, for example 53 %. 4. Select “Vibra state” as “Enabled” 5. Click “Write”. 6. Check if Vibra works. Figure 23 Checking vibra function by using vibra control Page 3 –22 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 65: Earpiece Fault
RM-258; RM-259 Baseband Troubleshooting Instructions Earpiece fault Troubleshooting flow Figure 24 Earpiece fault flow chart Issue 1 COMPANY CONFIDENTIAL Page 3 –23 Copyright © 2007 Nokia. All rights reserved.
Page 66: Ihf/Ringing Tone Fault
RM-258; RM-259 Baseband Troubleshooting Instructions IHF/ringing tone fault Troubleshooting flow Figure 25 IHF/ringing tone fault flow chart Page 3 –24 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 67: Microphone Fault
RM-258; RM-259 Baseband Troubleshooting Instructions Microphone fault Troubleshooting flow Figure 26 Microphone fault flow chart Issue 1 COMPANY CONFIDENTIAL Page 3 –25 Copyright © 2007 Nokia. All rights reserved.
Page 68: Headset Earpiece Fault
RM-258; RM-259 Baseband Troubleshooting Instructions Headset earpiece fault Troubleshooting flow Figure 27 Headset earpiece fault flow chart Page 3 –26 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 69: Headset Microphone Fault
RM-258; RM-259 Baseband Troubleshooting Instructions Headset microphone fault Troubleshooting flow Figure 28 Headset microphone fault flow chart Issue 1 COMPANY CONFIDENTIAL Page 3 –27 Copyright © 2007 Nokia. All rights reserved.
Page 73 Antenna troubleshooting ........................... 4–59 Antenna troubleshooting diagram....................... 4–59 List of Figures Figure 29 RF key components on PWB.........................4–8 Figure 30 Supply points at UEM (D2200) ......................4–9 Issue 1 COMPANY CONFIDENTIAL Page 4 –3 Copyright © 2007 Nokia. All rights reserved.
Page 74 Figure 79 VCXO 26 MHz waveform ........................4–47 Figure 80 PLL Troubleshooting diagram......................4–48 Figure 81 Measurement point for VCXO ......................4–49 Figure 82 Phoenix settings..........................4–50 Page 4 –4 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 75 Figure 86 FM module output signal........................4–52 Figure 87 BER test result............................. 4–54 Figure 88 Bluetooth self tests in Phoenix ......................4–55 Figure 89 Antenna troubleshooting ........................4–59 Issue 1 COMPANY CONFIDENTIAL Page 4 –5 Copyright © 2007 Nokia. All rights reserved.
Page 77: General Rf Troubleshooting
In the following both the name EGSM and GSM850 will be used for the lower band and both PCN and GSM1900 will be used for the upper band. Issue 1 COMPANY CONFIDENTIAL Page 4 –7 Copyright © 2007 Nokia. All rights reserved.
Page 78: Rf Key Components
Z7602 EGSM 850/900 RX SAW filter Z7600 DCS 1800/PCS1900 RX SAW filter Z7603 EGSM 850/900 TX filter Z7604 DCS 1800/PCS1900 TX filter B7600 26 MHz crystal Page 4 –8 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 79 Refer to the picture below for measuring points at the UEM (D2200). Figure 30 Supply points at UEM (D2200) Figure 31 Supply point at RF IC (N7600) Issue 1 COMPANY CONFIDENTIAL Page 4 –9 Copyright © 2007 Nokia. All rights reserved.
Page 80: Auto Tuning
Auto tuning procedure 1 Make sure the phone (in the jig) is connected to the equipment. Else, some menus will not be shown in Phoenix. Page 4 –10 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 81: Rm-258 Receiver
Band: GSM 900 iii Operation Mode: Continuous mode iv RX/TX Channel 37 AGC: 8: FEG_ON + DTOS_ON+BB_6=Vgain_36 Results The setup should now look like this: Issue 1 COMPANY CONFIDENTIAL Page 4 –11 Copyright © 2007 Nokia. All rights reserved.
Page 83: Troubleshooting Diagram For Gsm900 Receiver
By measuring with an oscilloscope at RXIP or RXQP on a working GSM900 receiver this picture should be seen. Signal amplitude peak-peak 108mV. DC offset 1.0V. Issue 1 COMPANY CONFIDENTIAL Page 4 –13 Copyright © 2007 Nokia. All rights reserved.
Page 84: General Instructions For Gsm 1800 Rx Troubleshooting
Band: GSM 1800 iii Operation Mode: Continuous mode iv RX/TX Channel 700 AGC: 8: FEG_ON + DTOS_ON+BB_6=Vgain_36 Results The setup should now look like this: Page 4 –14 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 86: Troubleshooting Diagram For Gsm1800 Receiver
By measuring with an oscilloscope at RXIP or RXQP on a working GSM1800 receiver this picture should be seen. Signal amplitude peak-peak 114mV. DC offset 1.0V. Page 4 –16 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 87: Measurement Points In The Receiver
RF Troubleshooting Instructions Figure 38 1800 RX I/Q signal waveform Measurement points in the receiver Figure 39 RX measurements point of the control voltages to FEM N7700 Issue 1 COMPANY CONFIDENTIAL Page 4 –17 Copyright © 2007 Nokia. All rights reserved.
Page 88: Rm-258 Transmitter
10dB before connected to the measurement equipment, otherwise the PA may be damaged. Phoenix and establish a connection to the phone with the data cable e.g. FBUS. 2. Start Page 4 –18 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 89 Active Unit: TX iii TX Power Level: 5 iv TX Data Type: Random Results The setup should now look like this: Figure 42 GSM 900 RF controls window Issue 1 COMPANY CONFIDENTIAL Page 4 –19 Copyright © 2007 Nokia. All rights reserved.
Page 90: Troubleshooting Diagram For Gsm900 Transmitter
Figure 43 GSM900 tarnsmitter troubleshooting GSM900 TX output power Measure the output power of the phone; it should be about 32.5dBm. Remember the cable loss is about 0.3dB. Page 4 –20 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 93: General Instructions For Gsm1800 Tx Troubleshooting
6. Set the parameters as follows: Band: GSM 1800 ii Active Unit: TX iii TX Power Level: 0 iv TX Data Type: Random Results The setup should now look like this: Issue 1 COMPANY CONFIDENTIAL Page 4 –23 Copyright © 2007 Nokia. All rights reserved.
Page 95: Troubleshooting Diagram For Gsm1800 Transmitter
Figure 50 GSM1800 transmitter troubleshooting GSM1800 TX output power Measure the output power of the phone; it should be about 29.5dBm. Remember the cable loss is about 0.5dB. Issue 1 COMPANY CONFIDENTIAL Page 4 –25 Copyright © 2007 Nokia. All rights reserved.
Page 98: Rm-259 Receiver
Band: GSM 850 iii Operation Mode: Continuous mode iv RX/TX Channel 190 AGC: 8: FEG_ON + DTOS_ON+BB_6=Vgain_36 Results The setup should now look like this: Page 4 –28 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 100: Troubleshooting Diagram For Gsm850 Receiver
RM-258; RM-259 RF Troubleshooting Instructions Troubleshooting diagram for GSM850 receiver Troubleshooting flow Figure 57 GSM850 receiver troubleshooting Page 4 –30 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 101: General Instructions For Gsm1900 Rx Troubleshooting
Band: GSM 1900 iii Operation Mode: Continuous mode iv RX/TX Channel 661 AGC: 8: FEG_ON + DTOS_ON+BB_6=Vgain_36 Results The setup should now look like this: Issue 1 COMPANY CONFIDENTIAL Page 4 –31 Copyright © 2007 Nokia. All rights reserved.
Page 103: Troubleshooting Diagram For Gsm1900 Receiver
RM-258; RM-259 RF Troubleshooting Instructions Troubleshooting diagram for GSM1900 receiver Troubleshooting flow Figure 60 GSM1900 receiver troubleshooting Issue 1 COMPANY CONFIDENTIAL Page 4 –33 Copyright © 2007 Nokia. All rights reserved.
Page 104 By measuring with an oscilloscope at RXIP or RXQP on a working GSM1900 receiver this picture should be seen. Signal amplitude 108 mVp-p. DC offset 1.0V. Figure 61 1900 RX I/Q signal waveform Page 4 –34 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 105: Measurement Points In The Receiver
Measurement points in the receiver Figure 62 RX measurements point of the control voltages to FEM N7700 Figure 63 Measurement points at the RX SAW Filters – Z7600/Z7602 Issue 1 COMPANY CONFIDENTIAL Page 4 –35 Copyright © 2007 Nokia. All rights reserved.
Page 106: Rm-259 Transmitter
6. Set the parameters as follows: Band: GSM 850 ii Active Unit: TX iii TX Power Level: 5 iv TX Data Type: Random Results The setup should now look like this: Page 4 –36 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 108: Troubleshooting Diagram For Gsm850 Transmitter
RM-258; RM-259 RF Troubleshooting Instructions Troubleshooting diagram for GSM850 transmitter Troubleshooting flow Figure 66 GSM850 transmitter troubleshooting Page 4 –38 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 109: Gsm850 Tx Output Power
Measure the output power of the phone; it should be about 32.5 dBm. Remember the cable loss is about 0.3 Figure 67 TX I/O signal Figure 68 VC1, VC3 signal Issue 1 COMPANY CONFIDENTIAL Page 4 –39 Copyright © 2007 Nokia. All rights reserved.
Page 111: General Instructions For Gsm1900 Tx Troubleshooting
5. Select Testing and RF Controls. 6. Set the parameters as follows: Band: GSM 1900 ii Active Unit: TX iii TX Power Level: 0 iv TX Data Type: Random Issue 1 COMPANY CONFIDENTIAL Page 4 –41 Copyright © 2007 Nokia. All rights reserved.
Page 112 RM-258; RM-259 RF Troubleshooting Instructions 7. The setup should now look like this: Figure 72 GSM 1900 RF controls window Page 4 –42 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 113: Troubleshooting Diagram For Gsm1900 Transmitter
RM-258; RM-259 RF Troubleshooting Instructions Troubleshooting diagram for GSM1900 transmitter Troubleshooting flow Figure 73 GSM1900 transmitter troubleshooting Issue 1 COMPANY CONFIDENTIAL Page 4 –43 Copyright © 2007 Nokia. All rights reserved.
Page 114: Gsm1900 Tx Output Power
Measure the output power of the phone; it should be about 29.5 dBm. Remember the cable loss is about 0.5 Figure 74 TX I/O signal Figure 75 VC1, VC2, VC3 signals Page 4 –44 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 116: Synthesizer Troubleshooting
The 26MHz signal from the VCXO can be measured by probing R2900. The level at this point is approx. 770mVpp. Frequency of this oscillator is adjusted by changing the AFC-register inside the UEM IC. Example Signal Measured at VCXO output (R2900). Page 4 –46 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 118: Troubleshooting Diagram For Pll Synthesizer
RM-258; RM-259 RF Troubleshooting Instructions Troubleshooting diagram for PLL synthesizer Figure 80 PLL Troubleshooting diagram Page 4 –48 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 119: Measurement Points At The Vcxo
1. Connect the phone to a PC with the module repair jig. 2. Start Phoenix and establish a connection to the phone with the data cable e.g. FBUS. 3. Phoenix settings shall be as follows: Issue 1 COMPANY CONFIDENTIAL Page 4 –49 Copyright © 2007 Nokia. All rights reserved.
Page 120 5. Signal generator settings shall be as follows: Frequency: 98 MHz ii Level: - 60 dBm iii FM deviation: 75 kHz iv LFGEN frequency: 1 kHZ Page 4 –50 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 121: Troubleshooting Diagram For Fm Radio
RM-258; RM-259 RF Troubleshooting Instructions Troubleshooting diagram for FM radio Troubleshooting flow Issue 1 COMPANY CONFIDENTIAL Page 4 –51 Figure 83 FM circuit troubleshooting diagram Copyright © 2007 Nokia. All rights reserved.
Page 122: Bluetooth And Fm Radio Test Points
Figure 84 Bluetooth and FM radio test points Figure 85 XAUDIO output signal Figure 86 FM module output signal Introduction to Bluetooth troubleshooting There are two main Bluetooth (BT) problems that can occur: Page 4 –52 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 123: Bluetooth Settings For Phoenix
7. Place the JBT-9 box near (within 10 cm) the BT antenna and click Run BER Test. Results Bit Error Rate (BER) Tests pane in the Bluetooth LOCALS window. Bit Error Rate test result is displayed in the Issue 1 COMPANY CONFIDENTIAL Page 4 –53 Copyright © 2007 Nokia. All rights reserved.
Page 124: Bluetooth Self Tests In Phoenix
4. From the Mode drop-down menu, set mode to Local. 5. Choose Testing→Self Tests. Self Tests window check the following Bluetooth related tests: 6. In the • ST_LPRF_IF_TEST • ST_LPRF_AUDIO_LINES_TEST • ST_BT_WAKEUP_TEST Page 4 –54 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 125: Bluetooth Ber Failure Troubleshooting
Bluetooth BER failure troubleshooting Context Basic encoding rules, BER, is a self-identifying and self-delimiting encoding scheme, which means that each data value can be identified, extracted and decoded individually. Issue 1 COMPANY CONFIDENTIAL Page 4 –55 Copyright © 2007 Nokia. All rights reserved.
Page 128: Bluetooth Audio And Ui Activation Troubleshooting
RM-258; RM-259 RF Troubleshooting Instructions Bluetooth audio and UI activation troubleshooting Troubleshooting flow Page 4 –58 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 129: Antenna Troubleshooting
RM-258; RM-259 RF Troubleshooting Instructions Antenna troubleshooting Antenna troubleshooting diagram Troubleshooting flow Figure 89 Antenna troubleshooting Issue 1 COMPANY CONFIDENTIAL Page 4 –59 Copyright © 2007 Nokia. All rights reserved.
Page 133 Figure 103 Image taken with clean protection window................. 5–15 Figure 104 Image taken with greasy protection window ................5–15 Figure 105 Bit errors caused by JPEG compression..................5–16 Issue 1 COMPANY CONFIDENTIAL Page 5 –3 Copyright © 2007 Nokia. All rights reserved.
Page 135: Introduction To Camera Module Troubleshooting
Usually the amount of pixels in the camera sensor; for example, RM-258/259 has a 640 x 480 pixel sensor resolution. In some occasions the term resolution is used for describing the sharpness of the images. Issue 1 COMPANY CONFIDENTIAL Page 5 –5 Copyright © 2007 Nokia. All rights reserved.
Page 136: The Effect Of Image Taking Conditions On Image Quality
See the figure below for an example. This is normal; do not change the camera module. Page 5 –6 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 137 This is normal; do not change the camera module. Figure 92 Near objects get skewed when taking images from a moving vehicle Issue 1 COMPANY CONFIDENTIAL Page 5 –7 Copyright © 2007 Nokia. All rights reserved.
Page 139 Generally this kind of reflections are common in all optical systems. This is normal behaviour; do not change the camera module. Figure 96 A lens reflection effect caused by sunshine Issue 1 COMPANY CONFIDENTIAL Page 5 –9 Copyright © 2007 Nokia. All rights reserved.
Page 140: Camera Construction
F number/Aperture f/2.8 Focal length 1.78 mm Focus range 20 cm to infinity Still Image resolutions 640x480, 320x240, 160x120 Still images file format EXIF (JPEG), *.jpg Page 5 –10 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 141 Automatic White Balance Automatic Colours 16.7 million / 24-bit Capture Modes Night mode, Sequence mode, self timer Figure 99 Camera module cross section and assembly principle Issue 1 COMPANY CONFIDENTIAL Page 5 –11 Copyright © 2007 Nokia. All rights reserved.
Page 142: Dynamic Camera Configuration
If the update fails, new camera configuration installed into the terminal is not supported by DP. Always update DCC when a camera or a HWA has been changed. Page 5 –12 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 143: Image Quality Analysis
However, it is possible that a larger particle disturbs the user, causing need for service. Issue 1 COMPANY CONFIDENTIAL Page 5 –13 Copyright © 2007 Nokia. All rights reserved.
Page 144: Testing Camera Image Sharpness
3 User has tried to take pictures in too dark conditions, and images are blurred due to handshake or movement. This is no cause to replace camera module. 4 There is dirt between the protection window and camera lens. Page 5 –14 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 145: Dirty Camera Lens Protection Window
– 2 meters. • If possible, compare the image to another image of the same scene, taken with a different device. Note that the reference device has to be a similar Nokia phone. Steps 1. Take several images of small objects in the distance of 1-2 metres.
Page 146: Camera Troubleshooting Flowcharts
Camera troubleshooting flowcharts Camera hardware failure message troubleshooting Context If you get a hardware failure message when using the camera, follow the next troubleshooting flowchart. Page 5 –16 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 147 RM-258; RM-259 Camera Module Troubleshooting Troubleshooting flow Note: Make sure that the phone has the latest software before continuing. Issue 1 COMPANY CONFIDENTIAL Page 5 –17 Copyright © 2007 Nokia. All rights reserved.
Page 148: Camera Baseband Hw Troubleshooting
RM-258; RM-259 Camera Module Troubleshooting Camera baseband HW troubleshooting Troubleshooting flow Page 5 –18 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 149: Camera Viewfinder Troubleshooting
RM-258; RM-259 Camera Module Troubleshooting Camera viewfinder troubleshooting Troubleshooting flow Issue 1 COMPANY CONFIDENTIAL Page 5 –19 Copyright © 2007 Nokia. All rights reserved.
Page 150: Bad Camera Image Quality Troubleshooting
RM-258; RM-259 Camera Module Troubleshooting Bad camera image quality troubleshooting Troubleshooting flow Page 5 –20 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 153 Figure 106 Module block diagram ........................6–5 Figure 107 Power connection diagram........................6–7 Figure 108 SIM filtering ............................6–7 Figure 109 Audio block diagram...........................6–9 Figure 110 4-pole jack plug for audio accessory....................6–10 Issue 1 COMPANY CONFIDENTIAL Page 6 –3 Copyright © 2007 Nokia. All rights reserved.
Page 154 ......................6–18 Figure 115 BL-4B battery pack contacts......................6–19 Figure 116 PWB top side component placement..................... 6–20 Figure 117 Keyboard layout in UI side ......................6–21 Page 6 –4 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 155: System Module Block Diagram
UI side, which is on the opposite side of the engine board. The 2CP is the engine module of the mobile device, and the 2CQ is the UI module of module of the mobile device. Figure 106 Module block diagram Issue 1 COMPANY CONFIDENTIAL Page 6 –5 Copyright © 2007 Nokia. All rights reserved.
Page 156: Baseband Description
DLIGHT, which add external pull up using a digital transistor and one resistor. The schematics also combined the UEMIO (5) to control DC/DC enable as another optional using two jumper. Page 6 –6 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 157: Energy Management
All connectors going to the “outside world” have filter components, ESD protection and EMC reduction. The Digital/Data lines on SIM have special dedicated filter ASIP. The below figure show the SIM filtering. Figure 108 SIM filtering Issue 1 COMPANY CONFIDENTIAL Page 6 –7 Copyright © 2007 Nokia. All rights reserved.
Page 158: Modes Of Operation
MIN! Audio function description The basic audio structure and communication between HW-audio modules and the audio ASIC's is illustrated in the block diagram below. Page 6 –8 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 159: External Audio Connector
Jack plug, which is integrated in the system connector, contains a mechanical switch, which is used to detect the connection of the accessories. The configuration for the 4-pole Jack-plug is shown in the following figure. Issue 1 COMPANY CONFIDENTIAL Page 6 –9 Copyright © 2007 Nokia. All rights reserved.
Page 160: Hall Sensor
The output of hall sensor is sent to GENIO24 of UPP. Baseband knows the status of the hall sensor that represents the phone position (folded or not). Page 6 –10 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 162: Interfaces
RF design (GenIO6 Load Resistance Load Capacitanc Timing ¼ symbo Accuracy RFBusEn1 RF-IC 1.38 1.88 RFIC Chip SelX Internal PU Current Load resistance Load capacitanc Page 6 –12 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 163 UEMCLiteV3 Load and LittiV2 resistance Output current GENIO5 UEMCLit RF IC 2.78 RF Control * Depends of the RF design Load resistance Output current Issue 1 COMPANY CONFIDENTIAL Page 6 –13 Copyright © 2007 Nokia. All rights reserved.
Page 164: Analogue Signals
Differential positive / voltage negative in-phase TXIN, swing and quadrature Tx TXQP, (static) Signals TXQN In High-Z when RX is receiving. DC level 1.17 1.20 1.23 Source Impedance Page 6 –14 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 165: Lcd Interface
A 5 X 5 matrix keyboad consists of 21 keys, one 10-channel integrated passive filiter arrays with downstream ESD protection of >8KV connect the matrix keyboard to UPP. Issue 1 COMPANY CONFIDENTIAL Page 6 –15 Copyright © 2007 Nokia. All rights reserved.
Page 166 RM-258; RM-259 System Module Figure 112 Keyboard schematics The layout is shown in Keyboard layout in UI side. Page 6 –16 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 167: Sim Interface
0.9xVSI VSIM 3V Vol 0.15xVSIM 1.8V Vih 0.7xVSI VSIM SIM data (input) 1.8V Vil 0.15xVSIM Trise/Tfall max 3V Vil 0.7xVSI VSIM 3V Vil 0.15xVSIM Not connected Issue 1 COMPANY CONFIDENTIAL Page 6 –17 Copyright © 2007 Nokia. All rights reserved.
Page 168: External Signals And Connections
EAR/ amplifier signal to Amp. accessory. DC biased to 0.8V Switch UEMC 0/2.7V Dig in HS interrupt from bottom HEADINT Lite connector switch when plug inserted. Page 6 –18 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 169: Battery Connector
BSI with an internal resistor. The BSI fixed resistor value indicates type and default capacity of a battery. Figure 115 BL-4B battery pack contacts Table 15 Pin numbering of battery pack Signal name Pin number Function Negative/common battery terminal Issue 1 COMPANY CONFIDENTIAL Page 6 –19 Copyright © 2007 Nokia. All rights reserved.
Page 170: Pwb Outline
Signal name Pin number Function Battery capacity measurement (fixed resistor inside the battery pack) VBAT Positive battery terminal PWB outline Figure 116 PWB top side component placement Page 6 –20 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 171: Rf Description
50 ohm signal. This signal is fed into the input of the PA. The two power amplifiers and the antenna switch are integrated in a single module with built-in power control loop. Issue 1 COMPANY CONFIDENTIAL Page 6 –21 Copyright © 2007 Nokia. All rights reserved.
Page 172: Transmitter - Signal Processing
After the SC-filter there is a continuous-time smoothing filter which attenuates the alias signals generated by the sampling process inherent in the SC-filter. The smoothing filter also has programmable gain. Page 6 –22 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 173: Vcxo And Pll
The VCXO also provides a 26 MHz system clock for the digital baseband. The PLL is located in PMB3258 and it is controlled via the RFBUS. Issue 1 COMPANY CONFIDENTIAL Page 6 –23 Copyright © 2007 Nokia. All rights reserved.
Page 177 D/A-converter Digital-to-analouge converter Digital-to-analouge converter Digital Battery Interface DBus DSP controlled serial bus connected between UPP_WD2 and Helgo DCT-4 Digital Core Technology Direct memory access Data Package Issue 1 COMPANY CONFIDENTIAL Page Glossary–3 Copyright © 2007 Nokia. All rights reserved.
Page 178 Integrated hands free IMEI International Mobile Equipment Identity Infrared IrDA Infrared Data Associasion Intelligent software architecture JPEG/JPG Joint Photographic Experts Group Liquid Crystal Display Low Drop Out Page Glossary–4 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.
Page 179 Serial control Bus For RF Right Soft Key RS-MMC Reduced size Multi Media Card RSSI Receiving signal strength indicator Reset Switch Real Time Clock (provides date and time) Issue 1 COMPANY CONFIDENTIAL Page Glossary–5 Copyright © 2007 Nokia. All rights reserved.
Page 180 Peak-to-peak voltage VSIM SIM voltage Wireless application protocol Watchdog XHTML Extensible hypertext markup language Zocus Current sensor, (used to monitor the current flow to and from the battery) Page Glossary–6 COMPANY CONFIDENTIAL Issue 1 Copyright © 2007 Nokia. All rights reserved.

This manual is also suitable for:

Rm-258 Rm-259

Nokia 2760 Service Manual

Table of Contents

Table of Contents

List of Figures

Table of Contents

Table of Contents

Table of Contents

Quick Links

Chapters

Troubleshooting

Related Manuals for Nokia 2760

Summary of Contents for Nokia 2760

This manual is also suitable for:

Table of Contents