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Nokia 6265 Baseband Description And Troubleshooting

Mobile terminals
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Nokia Customer Care
6265/6265i/6268 (RM-66)
Mobile Terminals
Baseband Description and
Troubleshooting
©2005 Nokia Corporation
Issue 1 11/2005
Company Confidential

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  • Page 1 Nokia Customer Care 6265/6265i/6268 (RM-66) Mobile Terminals Baseband Description and Troubleshooting ©2005 Nokia Corporation Issue 1 11/2005 Company Confidential...

  • Page 2: Table Of Contents

    6265/6265i/6268 (RM-66) Baseband Description and Troubleshooting Contents Page Introduction ..............................5 Power Up Sequence ............................ 6 Baseband/RF Regulators ..........................8 Baseband Regulators ..........................8 Baseband/RF Regulators ......................... 8 Flash Programming ............................. 10 Flashing Tool ...............................10 Flashing Troubleshooting ........................10 Flashing Phoenix Interface ........................12 Audio ................................
  • Page 3 6265/6265i/6268 (RM-66) Nokia Customer Care Baseband Description and Troubleshooting How UIM Card Works ..........................39 UIM Card Troubleshooting ........................39 UIM Card Phoenix Interface ........................42 Bluetooth ............................... 43 How the Bluetooth Works ........................43 Bluetooth Troubleshooting ........................44 Bluetooth Phoenix Interface ........................45 Mini-SD ................................46 Mini-SD Troubleshooting ........................46...
  • Page 4 6265/6265i/6268 (RM-66) Baseband Description and Troubleshooting Nokia Customer Care This page intentionally left blank. ©2005 Nokia Corporation Page 4 Company Confidential Issue 1 11/2005...

  • Page 5: Introduction

    Nokia Customer Care Baseband Description and Troubleshooting Introduction The 6265/6265i/6268 baseband module is a tri-mode, Code Division Multiple Access (CDMA), dual-band engine and is based on the DCT4.5 standard. The baseband engine includes three major Application Specific Integrated Circuits (ASICs): •...

  • Page 6: Power Up Sequence

    6265/6265i/6268 (RM-66) Baseband Description and Troubleshooting Power Up Sequence When the mobile terminal is dead or jammed always check the Power Up Sequence of the baseband area. Verify all regulator and reset signals are correct to ensure proper power up of the UEMEK and D2800 (see...
  • Page 7 6265/6265i/6268 (RM-66) Nokia Customer Care Baseband Description and Troubleshooting Figure 2: Measured power-on sequence and timing ©2005 Nokia Corporation Issue 1 11/2005 Company Confidential Page 7...

  • Page 8: Baseband/Rf Regulators

    6265/6265i/6268 (RM-66) Baseband Description and Troubleshooting Baseband/RF Regulators Baseband Regulators The baseband circuitry for the 6265/6265i/6268 is powered from five different UEMEK regulators: VANA, VIO, VFLASH1, VAUX, and VCORE DC/DC. See Figure 3 for regulator levels. Table 1: Baseband regulators...
  • Page 9 6265/6265i/6268 (RM-66) Nokia Customer Care Baseband Description and Troubleshooting VCORE VANA VFLASH 1 Figure 3: Voltage regulators-D2200 ©2005 Nokia Corporation Issue 1 11/2005 Company Confidential Page 9...

  • Page 10: Flash Programming

    6265/6265i/6268 (RM-66) Baseband Description and Troubleshooting Flash Programming Flashing Tool Flash programming is done through the VPP, FBUSTX, FBUSRX, MBUS, and BSI signals BSI = Used to indicate to MCU that the prommer is connected and mobile terminal is in...
  • Page 11 6265/6265i/6268 (RM-66) Nokia Customer Care Baseband Description and Troubleshooting Signal voltage Signal voltage Signal voltage Signal voltage Signal voltage Signal voltage levels are 1.8V levels are 1.8V levels are 2.78V levels are 2.78V levels are 1.8V levels are 1.8V Flash...

  • Page 12: Flashing Phoenix Interface

    6265/6265i/6268 (RM-66) Baseband Description and Troubleshooting If additional troubleshooting is still required to determine why the mobile terminal cannot be flashed, verify all the baseband voltages. In particular, check the VIO (1.8V at R3002) since it is one of the regulators that powers the flash chip.

  • Page 13: Audio

    • MIC3 input is used for the Universal Headset Every microphone input can have either a differential or single-ended AC connection to the UEMEK circuit. In the Nokia 6265/6265i/6268, the internal microphone (MIC1) and external microphone (MIC2) for Pop-port™ accessory detection are both differential.

  • Page 14: Audio Troubleshooting

    6265/6265i/6268 (RM-66) Baseband Description and Troubleshooting Audio Troubleshooting When troubleshooting the audio, make these common checks (see Figure • Perform a visual inspection of all the ASIPs and the UEMEK. • Inject a 1KHz signal into MiC1 and trace it to the earpiece. Only when using IHF signal will be amplified by a factor of 8x.

  • Page 15: Audio Phoenix Interface

    6265/6265i/6268 (RM-66) Nokia Customer Care Baseband Description and Troubleshooting Audio Phoenix Interface Run Audio Test in Phoenix to check the audio functionality. MiC1- Use the first option to route the audio from the internal microphone to the headset speaker. MiC2- Use the second option to route the audio signal from the headset microphone to internal earpiece.

  • Page 16: Camera

    6265/6265i/6268 (RM-66) Baseband Description and Troubleshooting Camera How the Camera works When you select the view finder to take a picture, the D2800 activates the camera by turning on GENIO(27) PDN and GENIO(24) 9.6MHz. Once the camera is initialized, D2800 sends control commands through the I2C (GENIO (25&26) interface.
  • Page 17 6265/6265i/6268 (RM-66) Nokia Customer Care Baseband Description and Troubleshooting VDIG 1.8V chip V1.2V chip GPIO(26) GPIO(25) Tiku_GPIO(47) (1.8V) V2.8V chip Data/clk to TIKU CCP1/CLKN(3) CCP1/CLKP(2) CCP1/DATN(1) CCP1/DATP(0) Raw image data from Sensor to HWA CCP2/CLKN V1.2V chip CCP2/CLKP CCP2/DATN CCP2/DATP VDIG 1.8V chip...

  • Page 18: Camera Phoenix Interface

    6265/6265i/6268 (RM-66) Baseband Description and Troubleshooting Camera Phoenix Interface Run the Camera Control test in Phoenix to check the camera functionality. Use Viewfinder On option to view image in the PC Window Figure 14: Camera control in Phoenix ©2005 Nokia Corporation...

  • Page 19: Fm Radio

    6265/6265i/6268 (RM-66) Nokia Customer Care Baseband Description and Troubleshooting FM Radio How the FM Radio Works The D2800 turns on the FM radio and sets the frequency using the CBUS serial interface as the communication channel. A high frequency FM radio signal comes in through RFIN1 Pin to the FM radio chip and gets demodulated into a low frequency signal and is sent to the UEMEK for amplification.
  • Page 20 6265/6265i/6268 (RM-66) Baseband Description and Troubleshooting • Check for activity on CBUS • Check the output of the FM radio on VAFR and VAFL. It should be an audio signal with a 800mv DC-offset. • If the audio signal is not correct (with 800mv DC-offset), then check the FM radio chip for shorts, voids, and misalignments •...

  • Page 21: Fm Radio Phoenix Interface

    6265/6265i/6268 (RM-66) Nokia Customer Care Baseband Description and Troubleshooting FM Radio Phoenix Interface Checks for the FM radio that can be performed with Phoenix include: • Verify that the FM radio is working by connecting headset to UHJ • Turn on the FM radio using Phoenix •...

  • Page 22: Usb (Universal Serial Bus)

    The Wireless 2 Function Controller (W2FC) core completes several USB functions automatically and is controlled by the ARM9 MCU. The Nokia USB Transceiver (NUT) provides the interface between the ASIC's 1.8 V bus and the 3.3 V USB bus. In addition, NUT is capable of transmitting and receiving Fbus signals to and from the Fbus UART in D2800.

  • Page 23: Usb Troubleshooting

    6265/6265i/6268 (RM-66) Nokia Customer Care Baseband Description and Troubleshooting USB Troubleshooting Connect the mobile terminal to the computer using a DKU-2 data cable. Check under Device Manager menu if the computer recognizes the mobile terminal as a USB device. If the mobile terminal is recognized, there is no hardware fault.
  • Page 24 6265/6265i/6268 (RM-66) Baseband Description and Troubleshooting Figure 21: USB Vout ©2005 Nokia Corporation Page 24 Company Confidential Issue 1 11/2005...

  • Page 25: Infrared

    6265/6265i/6268 (RM-66) Nokia Customer Care Baseband Description and Troubleshooting Infrared How Infrared Works The D2800 processor enables the infrared (IR) module by switching high GPIO (61). The UEMEK provides two power supply sources to the infrared module: VIO for digital Logic and Vflash1 for infrared.

  • Page 26: Infrared Phoenix Interface

    6265/6265i/6268 (RM-66) Baseband Description and Troubleshooting VBAT IRTX IR module IRRX GPIO 61 VFlash 1 Figure 23: Infrared circuit Infrared Phoenix Interface Run the IR Test in Phoenix to test the infrared. Figure 24: Phoenix IR test options ©2005 Nokia Corporation...

  • Page 27: Display

    Display How the Display Works Nokia 6265/6265i/6268 has a large 262k color 2.2 inch QVGA display (320 x 240), controlled by the D2800 engine through a parallel interface. The display is protected against ESD through a ESD ASIP next to the flex connector. The display backlight uses 4 LED in series power by external LED driver.

  • Page 28: Display Backlight Troubleshooting

    6265/6265i/6268 (RM-66) Baseband Description and Troubleshooting Figure 26: Display driver and circuitry Display Backlight Troubleshooting When troubleshooting the display backlight, make these common checks (see Figure 27): • Perform a visual inspection of LCD connector and LED Driver circuitry • If the display backlight does not turn on, check VLED +(~17V) for the main display.
  • Page 29 6265/6265i/6268 (RM-66) Nokia Customer Care Baseband Description and Troubleshooting Vbat LED driver Vout (~17V) Rset for internal display VLED+ Vout (~17V) LED driver - Dlight LED driver enabled Figure 27: Display backlight chip and diagram ©2005 Nokia Corporation Issue 1 11/2005...

  • Page 30: Display Phoenix Interface

    6265/6265i/6268 (RM-66) Baseband Description and Troubleshooting Display Phoenix Interface Run the Display Test and Display Tune in Phoenix to check the display. Turn on Display backlight Turn on Keypad backlight Figure 28: Phoenix display test option Figure 29: Phoenix display tune option ©2005 Nokia Corporation...

  • Page 31: Keypad Backlight

    6265/6265i/6268 (RM-66) Nokia Customer Care Baseband Description and Troubleshooting Keypad Backlight How the Keypad Backlight Works The keypad backlight is controlled by the UEMEK and powered by a constant current source driver that supplies the backlight LED of 10mA. The 10mA are set by a Rset Resistor of 12kohms going from the ISET pin to the Ground.

  • Page 32: Keypad Backlight Display Phoenix Interface

    6265/6265i/6268 (RM-66) Baseband Description and Troubleshooting • Check Vout to make sure LEDs are getting power. If still not working, change the LED. Make sure the LED orientation is correct. Vout (~6.3V) Klight (~Vbat) Rset Keypad LEDs Figure 31: Keypad backlight diagram Keypad Backlight Display Phoenix Interface Run the Display Test in Phoenix to check the keypad backlight.

  • Page 33: Slide Detect Circuit

    6265/6265i/6268 (RM-66) Nokia Customer Care Baseband Description and Troubleshooting Slide Detect Circuit How the Slide Detect Circuit Works The Hall-Effect sensor circuit monitors the position of the slide mechanism to determine if the mobile terminal is in open or closed position. The sensor has an open-collector output that is driven to ground when a magnetic field of appropriate strength is present.
  • Page 34 6265/6265i/6268 (RM-66) Baseband Description and Troubleshooting HEADINT2 Slide Detect circuit chip VFLASH1 Figure 34: Slide Detect circuit and chip ©2005 Nokia Corporation Page 34 Company Confidential Issue 1 11/2005...

  • Page 35: Gps

    6265/6265i/6268 (RM-66) Nokia Customer Care Baseband Description and Troubleshooting How the GPS Works This is for emergency 911 GPS service only. When you dial 911, the GPS turns on by using Vcore from the external DC-DC and VIO from UEMEK. GPS communicates with the D2800 using the UART interface.

  • Page 36: What Does The Gps Bb Do

    6265/6265i/6268 (RM-66) Baseband Description and Troubleshooting What does the GPS BB do? The GPS BB module performs the following functions: • Accept raw data from the GPS RF front-end • Process the raw data to provide the CE with location information (2 CPUs) •...
  • Page 37 6265/6265i/6268 (RM-66) Nokia Customer Care Baseband Description and Troubleshooting VREF_GPS BB GPS Chip GPS_CLK RF GPS Chip VCore (1.3V/V) GPS antenna VIO (1.8V) connector CLK19M2_GPS GPS antenna connector Figure 36: GPS chip Continue with the following checks: • Check GPS_EN_RESET (1.8V) •...

  • Page 38: Gps Phoenix Interface

    6265/6265i/6268 (RM-66) Baseband Description and Troubleshooting GPS_Sleep_Clk GPS_Sleepx GPS_EN_RESET Figure 37: GPS troubleshooting test points GPS Phoenix Interface Run the GPS Quick Test in Phoenix to check the GPS BB. CW test will fail unless CW tone is injected in GPS RF connector Figure 38: Phoenix GPS testing option ©2005 Nokia Corporation...

  • Page 39: Uim Card

    UIM Card How UIM Card Works The Nokia 6265/6265i/6268 supports two types of UIM cards that work at 1.8V and 3.0V. When the mobile terminal is switched on with a UIM card, the D2800 sends a 1.8V signal to the UIM card and waits for the UIM card’s response and identification. After a wait period, if there is no answer from the UIM card, the mobile terminal will send another signal at 1.8V.
  • Page 40 6265/6265i/6268 (RM-66) Baseband Description and Troubleshooting Figure 40: Vsim check • Check detection sequence SIM ESD Protection SIM_IOX SIM_DATA VSIM SIM_CLK SIMRSTX Figure 41: Detection sequence ©2005 Nokia Corporation Page 40 Company Confidential Issue 1 11/2005...
  • Page 41 6265/6265i/6268 (RM-66) Nokia Customer Care Baseband Description and Troubleshooting • Verify communication signals Figure 42: Communication signals • If no signals are present: (1) check contacts on Sim connector are correct, (2) check ESD chips are correct, and (3) check the UEMEK is correct. Replace damaged parts if necessary.

  • Page 42: Uim Card Phoenix Interface

    6265/6265i/6268 (RM-66) Baseband Description and Troubleshooting UIM Card Phoenix Interface Run the SIM-Lock Status in Phoenix to test a SIM (or UIM) card. Figure 43: Phoenix UIM (SIM) testing options ©2005 Nokia Corporation Page 42 Company Confidential Issue 1 11/2005...

  • Page 43: Bluetooth

    6265/6265i/6268 (RM-66) Nokia Customer Care Baseband Description and Troubleshooting Bluetooth How the Bluetooth Works Bluetooth is a low power, short- range radio technology. It is a standard developed by a group of electronics manufacturers that allows any sort of electronic device to correspond just by coming within proximity of each other.

  • Page 44: Bluetooth Troubleshooting

    6265/6265i/6268 (RM-66) Baseband Description and Troubleshooting Bluetooth Troubleshooting • Check solder • Check power supply, VIO • Check CLK19M2_BT at UHF SYNTH CLK19M2_BT Figure 45: Bluetooth components and test points ©2005 Nokia Corporation Page 44 Company Confidential Issue 1 11/2005...

  • Page 45: Bluetooth Phoenix Interface

    6265/6265i/6268 (RM-66) Nokia Customer Care Baseband Description and Troubleshooting Bluetooth Phoenix Interface Click Run to start the self-test Figure 46: Bluetooth Locals menu in Phoenix ©2005 Nokia Corporation Issue 1 11/2005 Company Confidential Page 45...

  • Page 46: Mini-Sd

    6265/6265i/6268 (RM-66) Baseband Description and Troubleshooting Mini-SD Mini-SD Troubleshooting • Perform a visual inspection on the Level Shifter and ESD ASIP • Check the power supplies VIO, VBAT, and VMSD • Check for activity on Mini SD control lines MMC_CLK, MMC_cmd, MMC_dat0 after Level Shifter •...

  • Page 47: System Connector

    Baseband Description and Troubleshooting System Connector Figure 48 provides a mapping for the system connector. The 6265/6265i/6268 supports Pop-port™ and Universal Headset accessories, differential and single-ended, respectively. Detection of the Pop-port™ accessories is done through the ACI signal where the Universal Headset is detected on TIKU_GenIO (4).

  • Page 48: Accessory Detection

    6265/6265i/6268 (RM-66) Baseband Description and Troubleshooting Accessory Detection Figure 49 displays how the mobile terminal detects accessories. Dummy accessories pull down to GND ACI Line. Smart accessories pull down ACI line with a 56K Ohm resistor allowing communication between accessory and UEMEK.

  • Page 49: Battery Interface Circuit

    6265/6265i/6268 (RM-66) Nokia Customer Care Baseband Description and Troubleshooting Battery Interface Circuit Figure 50 illustrates the battery interface circuit. The BSI voltage level for different power-up modes: • normal mode - 1.23V • test mode - 170mV • local mode - 90mV...

  • Page 50: Charging

    6265/6265i/6268 (RM-66) Baseband Description and Troubleshooting Charging When troubleshooting battery charging, make these common checks (see Figure Figure 52 Figure 53): • Does the battery bar scroll? Battery level indicator Figure 51: Battery indicator bar • Measure voltage at V2000. Is it >3VDC? Figure 52: Charging layout •...

  • Page 51: Common Problems

    6265/6265i/6268 (RM-66) Nokia Customer Care Baseband Description and Troubleshooting Common Problems The following section has a list of common problems, along with some standard checks. No Communication During Flash • Make sure there is a good connection between flash adaptor and the mobile terminal •...

  • Page 52: No Audio

    6265/6265i/6268 (RM-66) Baseband Description and Troubleshooting No Audio • Check for bad contacts or damaged ear piece • Check for bad connections at mic • Check for broken or bad solder joint of passive components • Verify the audio signal paths using BaseBand “audio test” component with...

  • Page 53: Phoenix Tools

    6265/6265i/6268 (RM-66) Nokia Customer Care Baseband Description and Troubleshooting Phoenix Tools Baseband menu items in Phoenix Guide. Figure 54: CDMA menu in Phoenix Figure 55: Baseband troubleshooting menu in Phoenix Figure 56: Flashing menu in Phoenix ©2005 Nokia Corporation Issue 1 11/2005...
  • Page 54 6265/6265i/6268 (RM-66) Baseband Description and Troubleshooting Figure 57: Troubleshooting factory menu in Phoenix Figure 58: ADC menu in Phoenix ©2005 Nokia Corporation Page 54 Company Confidential Issue 1 11/2005...
  • Page 55 6265/6265i/6268 (RM-66) Nokia Customer Care Baseband Description and Troubleshooting Figure 59: EM Calibration menu in Phoenix Figure 60: General IO and GPIO menu in Phoenix ©2005 Nokia Corporation Issue 1 11/2005 Company Confidential Page 55...
  • Page 56 6265/6265i/6268 (RM-66) Baseband Description and Troubleshooting Figure 61: Keyboard test menu in Phoenix ©2005 Nokia Corporation Page 56 Company Confidential Issue 1 11/2005...
  • Page 57 6265/6265i/6268 (RM-66) Nokia Customer Care Baseband Description and Troubleshooting Figure 62: Phone Information menu in Phoenix Figure 63: Phone Control menu in Phoenix ©2005 Nokia Corporation Issue 1 11/2005 Company Confidential Page 57...
  • Page 58 6265/6265i/6268 (RM-66) Baseband Description and Troubleshooting Figure 64: Regulator Control menu in Phoenix Figure 65: Self-test menu in Phoenix ©2005 Nokia Corporation Page 58 Company Confidential Issue 1 11/2005...

  • Page 59: Reference

    6265/6265i/6268 (RM-66) Nokia Customer Care Baseband Description and Troubleshooting Reference Signal references RFconv Clock 19.2 MHz System Clock 19.2 MHz D BOS Interface C BOS Interface Digital Sleep Clock 32 KHz Analog Sleep Clock 32 KHz Figure 66: Signal references ©2005 Nokia Corporation...

  • Page 60: Main Display Test Points

    6265/6265i/6268 (RM-66) Baseband Description and Troubleshooting Nokia Customer Care Main Display Test Points FBUSTX MBUS FBUSRX MSDA (Camera) DATP VCORE CLK 19Mz Camera CLK2P Camera CLK2N DATN CLKP CLKN (Camera) VSIM Camera (1.8V) SIM RESET Camera (1.2V) SIM_CLK SIM GND...

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