Nokia Customer Care RH-51/52, RH-67/68 Series Cellular Phones 6(a) - Baseband Troubleshooting and Manual Tuning Guide Issue 3 09/2004 © 2004 Nokia Corporation.
RH-51/52, RH-67/68 Company Confidential 6(a) - Baseband Troubleshooting Nokia Customer Care This page has been deliberately left blank Page 2 © 2004 Nokia Corporation.
Nokia Customer Care Company Confidential RH-51/52, RH-67/68 6(a) - Baseband Troubleshooting Table of contents Page No Baseband troubleshooting ..................................................................................................................... 7 Dead or jammed phone ....................................................................................................................... 8 BB selftest tools .....................................................................................
RH-51/52, RH-67/68 Company Confidential 6(a) - Baseband Troubleshooting Nokia Customer Care Image quality analysis ......................................................................................................................43 Possible faults in image quality....................................................................................................43 Testing for dust ..........................................................................................................................
Nokia Customer Care Company Confidential RH-51/52, RH-67/68 6(a) - Baseband Troubleshooting List of figures Page No Fig 1 Main troubleshooting diagram....................................................................................................7 Fig 2 Phone is jammed or dead..............................................................................................................8 Fig 3 BB selftest items.............................................................................................
RH-51/52, RH-67/68 Company Confidential 6(a) - Baseband Troubleshooting Nokia Customer Care This page has been deliberately left blank Page 6 © 2004 Nokia Corporation.
Nokia Customer Care Company Confidential RH-51/52, RH-67/68 6(a) - Baseband Troubleshooting Baseband troubleshooting This document is intended to be a guide for localising and repairing electrical faults in the RH-51/52, RH-67/68 device. The fault repairing is divided into troubleshooting paths. The following diagrams describe baseband troubleshooting. Figure 1: Main troubleshooting diagram Issue 3 09/2004 © 2004 Nokia Corporation.
RH-51/52, RH-67/68 Company Confidential 6(a) - Baseband Troubleshooting Nokia Customer Care Dead or jammed phone Figure 2: Phone is jammed or dead Page 8 © 2004 Nokia Corporation.
Nokia Customer Care Company Confidential RH-51/52, RH-67/68 6(a) - Baseband Troubleshooting BB selftest tools “Selftest failed. Contact service.” on display. This fault means that the software is able to run and thus the watchdog of UEME 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.
RH-51/52, RH-67/68 Company Confidential 6(a) - Baseband Troubleshooting Nokia Customer Care Flash programming fault Following is the troubleshooting flow chart of flash programming. “C101Boot timeoutl” written in the flow chart refers to the Phoenix error message that is shown when there are problems on phone flash programming using FPS-8. Figure 4: Flashing troubleshooting 1 Page 10 © 2004 Nokia Corporation.
Nokia Customer Care Company Confidential RH-51/52, RH-67/68 6(a) - Baseband Troubleshooting Figure 5: Flashing troubleshooting 2 Issue 3 09/2004 © 2004 Nokia Corporation.
RH-51/52, RH-67/68 Company Confidential 6(a) - Baseband Troubleshooting Nokia Customer Care General power checking Test points for regulators VCOREA (LM2608/N230: 1.5V output) Test point: C231 near by BT shield VLCD (MAS9161/N233: 2.5V output) Test point: N233 pin or C240 near. UEME internal regulators Test points: VIO 1.8V at C282 VANA 2.78V at C278 VFLASH1 2.78V at C279 VIO VANA VFLASH1 Page 12 © 2004 Nokia Corporation.
Nokia Customer Care Company Confidential RH-51/52, RH-67/68 6(a) - Baseband Troubleshooting Figure 6: General power check Issue 3 09/2004 © 2004 Nokia Corporation.
RH-51/52, RH-67/68 Company Confidential 6(a) - Baseband Troubleshooting Nokia Customer Care 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 RH-51/52, RH-67/68 the bus is connected between UPP_WD2, UEME and ZOCUS. UPP_WD2 takes care of controlling the traffic on the bus.
Nokia Customer Care Company Confidential RH-51/52, RH-67/68 6(a) - Baseband Troubleshooting The CBUS traffic is shown in the figure below (read command to ZOCUS, LM3820, N130). CBusCLk is connected to Ch1, CBusDa to CH2 and CBusEnx to Ch3. Figure 8: CBUS waveform If you are able to get the phone to boot up and can reach Phoenix BB selftest it is possible to test the functionality of each component attached to CBus.
RH-51/52, RH-67/68 Company Confidential 6(a) - Baseband Troubleshooting Nokia Customer Care age levels. The interface voltage level on the phone flash/test pad pattern is 2.78V and on the UPP_WD2 end it is 1.8V. MBUS traffic between UPP_WD2 and UEME can be tested with Phoenix (ST_MBUS_RX_TX_LOOP_TEST). Flashing is not possible if there is a problem in MBUS. The MBUS signal can also be seen at flashing test pads and the pad layout is shown in the following figure.
Nokia Customer Care Company Confidential RH-51/52, RH-67/68 6(a) - Baseband Troubleshooting Charger interface troubleshooting Figure 10: Not charging on display Issue 3 09/2004 © 2004 Nokia Corporation.
RH-51/52, RH-67/68 Company Confidential 6(a) - Baseband Troubleshooting Nokia Customer Care Figure 11: Nothing happens when charging Energy management calibration EM calibrations should be carried out in JBV-1 docking station attached to DA-2 docking station adapter. Power to JBV-1 should be supplied from an external DC power supply.
Nokia Customer Care Company Confidential RH-51/52, RH-67/68 6(a) - Baseband Troubleshooting VCHAR over limits Inspect components that are connected to VCHAR line: filtering capacitors C134, C135, TVS V130, L130 and fuse F130. If those are OK, change UEM. ICHAR over limits Inspect components that are connected to VCHAR line: filtering capacitors C134, C135, TVS V130, L130 and fuse F130. If those are OK, first change the current sense resistor R259, if calibration is still not successful, change UEME.
RH-51/52, RH-67/68 Company Confidential 6(a) - Baseband Troubleshooting Nokia Customer Care Backup battery Symptom of backup battery fault is: Real Time Clock loses the correct time during short battery removal. The same symptom can also be seen when the backup battery is empty. About 30 minutes is needed to fully charge the backup battery in the device. NOTE: The backup battery is charged only the same time with main battery charging, or when the device is in LOCAL or TEST mode.
Nokia Customer Care Company Confidential RH-51/52, RH-67/68 6(a) - Baseband Troubleshooting USB interface troubleshooting Figure 13: USB interface troubleshooting Issue 3 09/2004 © 2004 Nokia Corporation.
RH-51/52, RH-67/68 Company Confidential 6(a) - Baseband Troubleshooting Nokia Customer Care SIM card fault The whole SIM interface is located in two chips; UPP_WD2 and UEME. UEME contains the SIM interface logic level shifting. UPP_WD2 provides SIMClk through UEME 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 the UEME which isn’t shown in the figure below.
Nokia Customer Care Company Confidential RH-51/52, RH-67/68 6(a) - Baseband Troubleshooting Figure 15: SIM power up waveform Figure 16: SIM answer to reset waveform Issue 3 09/2004 © 2004 Nokia Corporation.
RH-51/52, RH-67/68 Company Confidential 6(a) - Baseband Troubleshooting Nokia Customer Care “Insert SIM Card” in device display although card is inserted Figure 17: Insert SIM card troubleshooting Page 24 © 2004 Nokia Corporation.
Nokia Customer Care Company Confidential RH-51/52, RH-67/68 6(a) - Baseband Troubleshooting Keypad interface fault Figure 18: Keypad troubleshooting 1 Issue 3 09/2004 © 2004 Nokia Corporation.
RH-51/52, RH-67/68 Company Confidential 6(a) - Baseband Troubleshooting Nokia Customer Care Figure 19: Keypad troubleshooting 2 Page 26 © 2004 Nokia Corporation.
Nokia Customer Care Company Confidential RH-51/52, RH-67/68 6(a) - Baseband Troubleshooting Display fault Figure 20: Display troubleshooting Issue 3 09/2004 © 2004 Nokia Corporation.
RH-51/52, RH-67/68 Company Confidential 6(a) - Baseband Troubleshooting Nokia Customer Care Illumination fault (display/keyboard backlight) Figure 21: Illumination troubleshooting 1 Page 28 © 2004 Nokia Corporation.
Nokia Customer Care Company Confidential RH-51/52, RH-67/68 6(a) - Baseband Troubleshooting Figure 22: Illumination troubleshooting 2 Issue 3 09/2004 © 2004 Nokia Corporation.
RH-51/52, RH-67/68 Company Confidential 6(a) - Baseband Troubleshooting Nokia Customer Care MMC interface fault Use with known working MMC to save the photo test. Target devices to replace are N310 Lester, R315 ASIP and X311 MMC connector. The MMC card itself might be broken, it should be checked as well. Figure 23: MMC troubleshooting Page 30 © 2004 Nokia Corporation.
Company Confidential RH-51/52, RH-67/68 6(a) - Baseband Troubleshooting Nokia Customer Care Audio troubleshooting Internal microphone Figure 24: Internal microphone troubleshooting Internal microphone faulty Check mic module and PWB contacts. Are they ok? no Clean contacts / replace mic module yes Set phone audio routing from MIC1 (hand portable) to known working audio output (i.e. EAR (HP) or HF/HFCM (Ext)). Ensure mic bias (MICB1) is on. Change defect parts no Is MIC bias 2.
RH-51/52, RH-67/68 Company Confidential 6(a) - Baseband Troubleshooting Nokia Customer Care External microphone Figure 25: External microphone troubleshooting External microphone faulty Connect headset HDB-4 to system connector Check system connector X132. Is it ok? no Clean contacts / replace X132 yes Set phone audio routing from MIC2 (Ext. XMIC) to known working audio output (i.e. EAR (HP) of HF/HFCM (Ext)). Ensure MIC bias (MIC2) is on. Change defect parts no Is MIC bias 2.
Nokia Customer Care Company Confidential RH-51/52, RH-67/68 6(a) - Baseband Troubleshooting Internal earpiece Check that holes are not coated. Figure 26: Internal earpiece troubleshooting Internal earpiece faulty Check earpiece and PWB contacts. Are they ok? no Clean contacts / replace earpiece & gasket yes Set phone audio routing from a known working MIC input to EAR N/P. Ensure the correct MIC bias is on.
RH-51/52, RH-67/68 Company Confidential 6(a) - Baseband Troubleshooting Nokia Customer Care External earpiece Figure 27: External earpiece troubleshooting External earpiece faulty Connect headset HDB-4 to system connector Check mechanical appearance and solderings of system connector. Is it ok? no Replace system connector X132 yes Set phone audio routing from a known working MIC input to HF/HFCM. Ensure that correct MIC bias is on.
Company Confidential RH-51/52, RH-67/68 6(a) - Baseband Troubleshooting Nokia Customer Care IHF Figure 28: IHF troubleshooting IHF troubleshooting Check IHF speaker contacts and PWB pads. Check that speaker impedance is 8 ohm. Is it ok? no Clean contacts / replace IHF speaker / IHF connector yes Set phone audio routing from a known working MIC input to PAOUTP & PAOUTN. Ensure that correct MIC bias is on.
RH-51/52, RH-67/68 Company Confidential 6(a) - Baseband Troubleshooting Nokia Customer Care Accessory detection troubleshooting Figure 29: Accessory detection troubleshooting Page 36 © 2004 Nokia Corporation.
Nokia Customer Care Issue 3 09/2004 Company Confidential RH-51/52, RH-67/68 6(a) - Baseband Troubleshooting © 2004 Nokia Corporation.
RH-51/52, RH-67/68 Company Confidential 6(a) - Baseband Troubleshooting Nokia Customer Care Camera module troubleshooting A fault associated to camera operation can be roughly categorized to three subgroups: 43 Camera is not functional at all, no image can be obtained. 44 Images can be taken but there is nothing recognizable in them. 45 Images can be taken and they are recognizable but for some reason the quality of images is seriously degraded.
Nokia Customer Care Company Confidential RH-51/52, RH-67/68 6(a) - Baseband Troubleshooting Image taking condition effect on image quality This chapter lists some of the factors, which may cause poor image quality if not taken into account, and thus result in complaints from customers. Several issues affect the image quality and will need to be taken into account when shooting pictures; the listed items are normal to camera operation.
RH-51/52, RH-67/68 Company Confidential 6(a) - Baseband Troubleshooting Nokia Customer Care Amount of light available In dim conditions the camera runs out of sensitivity. Exposure time is long (especially in night mode) and the risk of getting shaken images grows. Image noise level grows. The maximum exposure time in night mode is approximately ¼ seconds, so images need to be taken with extreme care when the amount of light reflected from the target is low.
Nokia Customer Care Company Confidential RH-51/52, RH-67/68 6(a) - Baseband Troubleshooting Figure 33: 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 shooting against light Electronic image sensors typically have a much lower dynamic range than films.
RH-51/52, RH-67/68 Company Confidential 6(a) - Baseband Troubleshooting Nokia Customer Care Figure 35: 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.
Nokia Customer Care Company Confidential RH-51/52, RH-67/68 6(a) - Baseband Troubleshooting 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.
RH-51/52, RH-67/68 Company Confidential 6(a) - Baseband Troubleshooting Nokia Customer Care Figure 38: Effects of dust in optical path If large dust particles get trapped on top of the lens surface in the cavity between 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.
Company Confidential RH-51/52, RH-67/68 6(a) - Baseband Troubleshooting Nokia Customer Care The main considerations are: Amount of light: 300 – 600 lux (bright office lighting) is sufficient. The scene should contain e.g. small objects for checking sharpness and distance to them should be in order of 1 – 2 meters If possible, compare the image to another image of the same scene, taken by different device. The taken images should be analysed on PC screen at 100% scaling simultaneously with reference image.
RH-51/52, RH-67/68 Company Confidential 6(a) - Baseband Troubleshooting Nokia Customer Care Camera hardware failure troubleshooting flow If camera related hardware is faulty, follow the troubleshooting sequence below. Figure 39: Camera HW troubleshooting Page 46 © 2004 Nokia Corporation.
Nokia Customer Care Company Confidential RH-51/52, RH-67/68 6(a) - Baseband Troubleshooting Figure 40: Hardware failure troubleshooting Issue 3 09/2004 © 2004 Nokia Corporation.
RH-51/52, RH-67/68 Company Confidential 6(a) - Baseband Troubleshooting Nokia Customer Care Bad image quality Figure 41: Bad image quality troubleshooting Page 48 © 2004 Nokia Corporation.
Company Confidential RH-51/52, RH-67/68 6(a) - Baseband Troubleshooting Nokia Customer Care Baseband tuning operation Energy managment calibration is always required when the following components are changed. • charging related components • ZOCUS (N130) and related components • UEME (D250) and related components • BSI related components Energy management calibration EM (Energy Management) calibration is performed to calibrate the setting (gain and offset) of AD converters in several channels (i.e.
RH-51/52, RH-67/68 Company Confidential 6(a) - Baseband Troubleshooting Nokia Customer Care Figure 42: EM calibration window Calibration procedure with JBV-1 Select “Read from phone” to show the current values in the phone memory, and then check that the communication with the phone works. Select “JBV-1 used” check box. Select the item(s) you try to calibrate. Note: ADC has to be calibrated before other item(s). If the ADC value is correct or you calibrate ADC and other items at the same time, that’s OK.
Company Confidential RH-51/52, RH-67/68 6(a) - Baseband Troubleshooting Nokia Customer Care Close the Energy Management Calibration widow. Parameter Min. Max. ADC Gain 26500 28500 ADC Offset -50 50 BSI Gain 950 1100 VBAT Gain 10000 11000 VBAT Offset 2300 2900 VCHAR Gain 58000 62000 ICHAR Gain 3750 4650 ICHAR Offset 0 150 IBAT Gain 50 160 Issue 3 09/2004 © 2004 Nokia Corporation.
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