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ISSUE 2 01/2004 COMPANY CONFIDENTIAL 1

Customer Care Solutions

Technical Documentation

6(a) - Baseband Troubleshooting

and Manual Tuning Guide

Summary of content (50 pages)

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NHL-10 Baseband Troubleshooting CCS Technical Documentation Table of Contents Page No Introduction to NHL-10 troubleshooting ....................................................................................................... 4 Dead or jammed phone ................................................................................................................................ 5 BB Selftest tools ............................................................................................................
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NHL-10 CCS Technical Documentation Baseband Troubleshooting Calibration procedure with JBV-1................................................................................................... 45 Zocus (IBAT) calibration with MJ-2 module jig .................................................................................. 46 Connections ........................................................................................................................................... 46 Phoenix Setup ..............
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NHL-10 Baseband Troubleshooting CCS Technical Documentation Introduction to NHL-10 troubleshooting This document is intended to be a guide for localizing and repairing electrical faults in the NHL10 device. The fault repairing is divided into troubleshooting paths. The following diagrams describe baseband troubleshooting. Figure 1: Main Troubleshooting Diagram ISSUE 2 01/2004 COMPANY CONFIDENTIAL Copyright © 2003 Nokia. All Rights Reserved.
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NHL-10 CCS Technical Documentation Baseband Troubleshooting Dead or jammed phone Figure 2: Phone is jammed or dead BB Selftest tools “Selftest failed. Contact service.” on display This fault means that the software is able to run and thus the watchdog of UEM can be served. Selftest functions are executed when the phone is powered on, and if one or more selftest functions fail, the message “Selftest failed. Contact service.” is shown on the display.
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NHL-10 Baseband Troubleshooting CCS Technical Documentation General Power checking Figure 5: General Power check ISSUE 2 01/2004 COMPANY CONFIDENTIAL Copyright © 2003 Nokia. All Rights Reserved.
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NHL-10 CCS Technical Documentation Baseband Troubleshooting Baseband serial interface troubleshooting CBUS CBUS is a three wire serial interface between the main baseband components. The bus consists of data, clock and bus_enable signals. In NHL-10 the bus is connected from UPP_WD2 to UEM and the BT module. UPP_WD2 takes care of controlling the traffic on the bus. If the interface is faulty from the UPP WD2's end the phone will not boot properly as powering configurations do not work.
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NHL-10 Baseband Troubleshooting CCS Technical Documentation Figure 7: CBUS waveform If you are able to get the phone to boot up and can reach Phoenix BB self tests it is possible to test the functionality of each component attached to Cbus.
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NHL-10 CCS Technical Documentation Baseband Troubleshooting The interface voltage level on the phone flash/test pad pattern is 2.78V and on the UPP WD2 end it is 1.8V. The MBUS traffic between UPP WD2 and UEM can be tested with PHOENIX (ST_MBUS_RX_TX_LOOP_TEST). Flashing is not possible if there is a problem in MBUS. 12 COMPANY CONFIDENTIAL Copyright © 2003 Nokia. All Rights Reserved.
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NHL-10 Baseband Troubleshooting CCS Technical Documentation Charger Interface troubleshooting Figure 8: Not charging on display ISSUE 2 01/2004 COMPANY CONFIDENTIAL Copyright © 2003 Nokia. All Rights Reserved.
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NHL-10 Baseband Troubleshooting CCS Technical Documentation Energy management calibration During energy management calibration, the A/D converter, BSI, Btemp, Battery voltage, Charger voltage and Charger current are calibrated. For detailed information and instructions see EM-calibration instructions in the service manual.
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NHL-10 CCS Technical Documentation Baseband Troubleshooting Figure 10: ADC-reading view Table 1: Maximum tolerances Reading Check point Tolerance Vbatt SCAL_ 4.2V ±25mV Vchar 8.4V ±40mV Ichar 500mA ±20mV BSI 75k (BL-5C) ±1.3kohm Btemp 273K (47k) ±5K Backup battery Symptom of backup battery fault is: Real Time Clock loses the correct time during a short main battery removal. The same symptom can also be seen when the backup battery is empty.
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NHL-10 Baseband Troubleshooting CCS Technical Documentation Always check the backup battery visually for any leakage or any other visual defect. Check that the backup battery is correctly mounted in the device before closing the cover. Check with Phoenix that the backup battery is OK. Measure the voltage of the backup battery • Normal operation when the voltage is > 2.0V • Fully charged when the voltage is about 3.2V Enable backup battery charging.
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NHL-10 CCS Technical Documentation Baseband Troubleshooting IrDA Interface Fault At this point it is supposed that the problem is in the HW. Figure 11: IrDA interface troubleshooting 18 COMPANY CONFIDENTIAL Copyright © 2003 Nokia. All Rights Reserved.
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NHL-10 Baseband Troubleshooting CCS Technical Documentation SIM Card Fault The whole SIM interface is located in two chips, UPP_WD2 and UEMK. UEMK contains the SIM interface logic level shifting. UPP_WD2 provides SIMClk through UEMK to the SIM. The SIM interface supports both 3V and 1.8V SIMs. There is an EMIF component (3 Lines EMI filter) between the SIM card and UEMK, which isn’t shown in the below picture.
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NHL-10 CCS Technical Documentation Baseband Troubleshooting Figure 13: SIM Power up waveform Ch1: VSIM Ch2: I/O Ch3: Clock Ch4: Reset 20 COMPANY CONFIDENTIAL Copyright © 2003 Nokia. All Rights Reserved.
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NHL-10 Baseband Troubleshooting CCS Technical Documentation Figure 14: SIM Answer To Reset waveform Ch1: VSIM Ch2: I/O Ch3: Clock Ch4: Reset ISSUE 2 01/2004 COMPANY CONFIDENTIAL Copyright © 2003 Nokia. All Rights Reserved.
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NHL-10 CCS Technical Documentation Baseband Troubleshooting “Insert SIM Card” in device display although card is inserted Figure 15: Insert SIM Card troubleshooting 22 COMPANY CONFIDENTIAL Copyright © 2003 Nokia. All Rights Reserved.
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NHL-10 Baseband Troubleshooting CCS Technical Documentation Keypad Interface Fault Figure 16: Keypad troubleshooting ISSUE 2 01/2004 COMPANY CONFIDENTIAL Copyright © 2003 Nokia. All Rights Reserved.
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NHL-10 Baseband Troubleshooting CCS Technical Documentation Illumination Fault (Display/Keyboard backlight) Figure 18: Illumination troubleshooting ISSUE 2 01/2004 COMPANY CONFIDENTIAL Copyright © 2003 Nokia. All Rights Reserved.
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NHL-10 CCS Technical Documentation Baseband Troubleshooting MMC Interface Fault Use with known working MMC to save photo test. Figure 19: MMC troubleshooting 26 COMPANY CONFIDENTIAL Copyright © 2003 Nokia. All Rights Reserved.
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NHL-10 Baseband Troubleshooting CCS Technical Documentation Audio troubleshooting Microphone Figure 20: Internal MIC troubleshooting START No Check Mic module and PWB contacts. Are they OK? Clean contacts / replace MIC module Audio Troubleshooting Internal MIC Ye s Set Phone Audio Routing from MIC1 (Hand Portable) to know n w orking audio output (I.e. EAR [HP] or HF/HFCM [Ext]). Ensure MIC Bias [MICB1] is ON. Is MIC Bias 2.
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NHL-10 CCS Technical Documentation Baseband Troubleshooting Figure 21: External MIC troubleshooting START Audio Troubleshooting External MIC Connect a know n w orking 4 terminal DCT4 headset to the system connector. Check system connector and PWB contacts. Are they OK? No Clean contacts / replace system connector, X381 Yes Set Phone Audio Routing from MIC2 (Ext. XMIC) to know n w orking audio output (i.e. EAR [HP] or HF/HFCM [Ext]). Ensure MIC Bias (MICB2) is ON. Is MIC Bias 2.
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NHL-10 Baseband Troubleshooting CCS Technical Documentation Earpiece Check that holes are not coated. Figure 22: Internal Earpiece troubleshooting START Audio Troubleshooting Internal Earpiece Check Earpiece and PWB contacts. Are they OK? No Clean contacts / replace the earpiece (B341) & gasket. Ye s Set Phone Audio Routing from a know n w orking MIC input, MIC1 [HP, int] or MIC2 [Ext, XMIC] to EARP/N. Ensure the correct MIC Bias is ON.
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NHL-10 CCS Technical Documentation Baseband Troubleshooting Figure 23: External Earpiece troubleshooting START Audio Troubleshooting External Earpiece Connect a know n w orking 4 terminal DCT4 headset to the system connector. Check system connector and PWB contacts. Are they OK? No Clean contacts / replace system connector, X381. Yes Set Phoenix Audio Routing from a know n w orking MIC input, MIC1 [HP, int] or MIC2 [Ext, XMIC] to HF/HFCM. Ensure the correct MIC Bias is ON.
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NHL-10 Baseband Troubleshooting CCS Technical Documentation IHF Figure 24: IHF troubleshooting START Audio Troubleshooting IHF Check IHF speaker contacts and PWB pads. Are they OK? No Clean contacts / replace the IHF speaker (B340) & gasket. Yes Set Phone Audio Routing from a know n w orking MIC input, MIC1 [HP, int] or MIC2 [Ext, XMIC] to HF/HFCM. Ensure the correct MIC Bias is ON.
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NHL-10 CCS Technical Documentation Baseband Troubleshooting See the previous flow chart Is the ac amplitude of the IHF tone signal valid? Check Boomer gain resistors R337 & R336. Also check other passives around Boomer, especially C334, C336 & C337.
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NHL-10 Baseband Troubleshooting CCS Technical Documentation Accessory detection troubleshooting Figure 25: Accessory detection troubleshooting ISSUE 2 01/2004 COMPANY CONFIDENTIAL Copyright © 2003 Nokia. All Rights Reserved.
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NHL-10 CCS Technical Documentation Baseband Troubleshooting Camera Module Troubleshooting A fault associated to camera operation can be roughly categorized to three subgroups: 1 Camera is not functional at all, no image can be obtained. 2 Images can be taken but there is nothing recognizable in them. 3 Images can be taken and they are recognizable but for some reason the quality of images is seriously degraded.
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NHL-10 Baseband Troubleshooting CCS Technical Documentation scene objects. In practice, the operation is such that close objects may be noticed to get more blurred when the distance to them is shortened from 40 cm. Lack of sharpness will be first visible in full resolution (VGA) images. If observing just the viewfinder, even very close objects may seem to appear sharp. Sharpness of picture edges: Lens performance degrades in image edges, and generally the image is sharpest in centre part.
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NHL-10 CCS Technical Documentation Baseband Troubleshooting Figure 27: Shaking hands caused blurring of this image. Note the geometrical barrel distortion in background Movement in bright light: If pictures of moving objects are taken or if the device is used in a moving car, object ’skewing’ or ‘tilting’ will occur. This phenomena is fundamental to most CMOS camera types and normal, and can not be helped.
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NHL-10 Baseband Troubleshooting CCS Technical Documentation Figure 29: Noisy image taken in +70deg Display: If the display contrast is set too dark, the image quality degrades quite much: the images may be very dark, naturally depending on the setting. This flaw is easily cured by setting the display contrast to correct value. Basic rules of photography, especially when shooting against light: Electronic image sensors typically have much lower dynamic range than films.
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NHL-10 CCS Technical Documentation Baseband Troubleshooting Figure 31: Flicker in image of white uniform object illuminated by strong fluorescent light Bright light outside of image view: Especially sun causes clearly visible ‘halo’ effects and poor contrast in images. This happens due to unwanted reflections inside camera optics.
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NHL-10 Baseband Troubleshooting CCS Technical Documentation Image quality analysis Possible faults in image quality When checking for possible errors in camera functionality, knowing what error is suspected will significantly help the testing by narrowing down the amount of test cases.
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NHL-10 CCS Technical Documentation Baseband Troubleshooting Figure 34: Effects of dust in optical path If large dust particles get trapped on top of the lens surface in the cavity between the camera window and lens, they will cause image blurring and poor contrast (see also item ‘sharpness’). The seal between the window and lens should prevent any particles from getting into the cavity after manufacturing phase.
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NHL-10 Baseband Troubleshooting CCS Technical Documentation If no visible defects (items 2-4) can be found, a couple of test images should be taken and checked. Generally, a well illuminated typical indoor office scene, such as the one in Figure 33: A good quality picture taken indoors, can be used as a target. The main considerations are: The amount of light, 300 – 600 lux (bright office lighting), is sufficient. The scene should contain e.g.
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NHL-10 CCS Technical Documentation Baseband Troubleshooting Hardware failure message Figure 35: Hardware failure troubleshooting 42 COMPANY CONFIDENTIAL Copyright © 2003 Nokia. All Rights Reserved.
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NHL-10 Baseband Troubleshooting CCS Technical Documentation No recognizable viewfinder image Figure 36: No recognizable viewfinder image ISSUE 2 01/2004 COMPANY CONFIDENTIAL Copyright © 2003 Nokia. All Rights Reserved.
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NHL-10 Baseband Troubleshooting CCS Technical Documentation Baseband Tuning operation Energy management calibration EM calibration is performed to calibrate the setting (Gain and offset) of AD converters in several channels (i.e. Battery Size, Battery voltage, Charger voltage, Charger current, Battery Current). This is to get accurate conversion result of AD converter. Connections The NHL-10 phone must be connected to JBV-1 (Docking station) with DA-2 (Docking station adapter).
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NHL-10 CCS Technical Documentation Baseband Troubleshooting Figure 38: Energy Management Calibration window Calibration procedure with JBV-1 1 Select Read from phone to display the current calibration values that stored in the phone memory. The values are displayed in the Phone Values field. 46 2 Select the ADC channel(s) you intend to calibrate. 3 Press Calibrate. 4 Calibration is automatically done regarding the calibration channel(s) that you selected.
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NHL-10 Baseband Troubleshooting CCS Technical Documentation Table 2: Calibration value limit Parameter Min. Max. ADC Gain 25400 29000 ADC Offset -50 50 BSI Gain 970 1100 VBAT Gain 10000 11000 VBAT Offset 2300 2900 VCHAR 58000 62000 ICHAR 4050 4800 IBAT GAIN 0 255 Zocus (IBAT) calibration with MJ-2 module jig Zocus (IBAT) calibration can be performed manually with module jig instead of JBV-1. Connections The NHL-10 phone must be placed in MJ-2 (Module jig).
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NHL-10 CCS Technical Documentation Baseband Troubleshooting Figure 39: Zocus EM window Zocus (IBAT) calibration procedure with MJ-2 module jig 48 1 Place the PWB in the module jig. 2 Connect an ammeter to Ammeter sockets to check the current flowing on the line. Be careful for the shunt resistor value of ammeter. Large shunt resistor value causes the difficulty of phone power up. 3 Set the S1: Passed and S2: Calibration.
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NHL-10 Baseband Troubleshooting CCS Technical Documentation 8 Press Read in the ADC reading field to confirm the communication between the phone and phoenix is no problem. 9 Press Close Charge Switch. 10 Adjust the current limit on the power supply until the ammeter reads 500mA +/5mA. 11 Type the measured current (read this from the ammeter) into the Measured Current box. The value is negative and presented in Amps, e.g. if you measure 502mA, then type –0.502.