Nokia RM-12 Troubleshooting Instructions
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Nokia RM-12 Troubleshooting Instructions

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Customer Care Solutions
Technical Documentation
6-Troubleshooting Instructions
Issue 1 11/2004
COMPANY CONFIDENTIAL
1
Copyright © 2004 Nokia. All Rights Reserved.

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  • Page 1 Customer Care Solutions Technical Documentation 6-Troubleshooting Instructions Issue 1 11/2004 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
  • Page 2 RM-12 CCS Technical Documentation [This page intentionally blank] COMPANY CONFIDENTIAL Issue 1 11/2004 Copyright © 2004 Nokia. All Rights Reserved.

  • Page 3: Table Of Contents

    Introduction to RM-12 troubleshooting ................. 2 General guidelines for RM-12 troubleshooting ............. 2 Tools needed for troubleshooting ................2 General guidelines ....................... 2 RF Troubleshooting ....................... 3 Introduction to RF troubleshooting ................3 RF Key component placement ..................4 RF Measurement points ....................5 EGSM900, GSM1800 &...

  • Page 4: Introduction To Rm-12 Troubleshooting

    Before any service operation you must be familiar with the RM-12 product and module level architecture. You have to also be familiar with the RM-12 specified service tools such as the Phoenix service software, flashing tools and software.

  • Page 5: Rf Troubleshooting

    PWB ground as close to measurement point as possible. Note! If the measurement values of RM-12 are as mentioned in this RF troubleshooting guide, but there are still difficulties making calls with the device, then check the antenna contacts in PWB.

  • Page 6: Rf Key Component Placement

    4GHz VCO VCO balun Antenna Switch Module 1800 RX SAW Power Amplifier Helgo86 RF ASIC 26 MHz VCTCXO 900 TX SAW 1800/1900 TX balun Figure 1: Component placement 1 Issue 1 11/2004 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.

  • Page 7: Rf Measurement Points

    Mode TXA/J7301 TXQP/QN Iref_900 TXIN/TXIP VTXB_900 PA_in_900 VCTCXO 26Mhz out VPECTRL3(ALC) Iref_1800_1900 VPCTRL_1800/1900 VPCTRL_900 26MHz to BB VTXB PA_in_1800/1900 _1800_1900 RFBusEna1/J7306 RFBusReset/J7307 RFBusData/J7304 RFBusClk/J7305 Figure 2: Measurement points COMPANY CONFIDENTIAL Issue 1 11/2004 Copyright © 2004 Nokia. All Rights Reserved.

  • Page 8: Egsm900, Gsm1800 & Gsm1900 Transmitter

    Initialize connection to phone. (Use FBUS driver when using DAU9S, COMBOX driver when using FPS-8.) Select product from the menu: File -> Choose product -> RM-12 From toolbar, set operating mode to "Local" Activate RF controls window from the menu: Testing ->...
  • Page 9 Base level ~0.137…0.166(GSM900); ~0.132…0.161(GSM1800&1900) Major differences? Check control voltage with Check control loop Replace Helgo oscilloscope: components PA Ctrl voltage >1.5V peak PA & Antenna Switch Replace faulty troubleshooting components COMPANY CONFIDENTIAL Issue 1 11/2004 Copyright © 2004 Nokia. All Rights Reserved.
  • Page 10 Check with RF probe: 4G VCO signal output: -3589.6MHz (GSM900) Synthesizer -3495.6MHz (GSM1800) troubleshooting -3760MHz (GSM1900) Level > - 10dBm Check modulator output components Replace HELGO Replace faulty component(s) Issue 1 11/2004 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
  • Page 11 Check with oscilloscope: Check VANT line -VBATT ~4V components -VTXB = 2.8V pulsed -VPCTRL_900/1800/1900 Replace faulty component(s) Replace PA Check components around PA Replace HELGO Replace faulty component(s) COMPANY CONFIDENTIAL Issue 1 11/2004 Copyright © 2004 Nokia. All Rights Reserved.
  • Page 12 Figure 6: Transmitter signals, VPCTRL VPCTRL900 power level high at R7003 VPCTRL1800/1900 power level high at R7007 Figure 7: Transmitter signals 200mV/div 100us/div TX I/Q at R7304/7305 power level high Random data Issue 1 11/2004 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
  • Page 13 VANT_2 / GSM1800 TX at C7102 VTXB_1800_1900 at C7014 VANT_3 / GSM1900 TX at C7101 OV (no signal/ Flatline on Oscilloscope screen) 500mV/div 100us/div TXC at R7303 TXP at J7300 COMPANY CONFIDENTIAL Issue 1 11/2004 Copyright © 2004 Nokia. All Rights Reserved.

  • Page 14: Additional Information For Edge Troubleshooting

    Establish connection to the phone normally (see GSM900/1800/1900 troubleshooting instruc- tions). Select product from the menu: File -> Choose Product -> RM-12 From toolbar, set operating mode to “Local” Activate RF controls window from the menu: Testing -> RF Controls From the RF controls window: •...
  • Page 15 GSM1800 or GSM1900 NOTE! For GSM900, Edge power levels 5, 6 and 7 are not in use, and for GSM1800&1900, Edge power levels 0 and 1 are not in use. COMPANY CONFIDENTIAL Issue 1 11/2004 Copyright © 2004 Nokia. All Rights Reserved.
  • Page 16 Check EDGE control Replace Helgo oscilloscope: loop components Pa Iref ~2V peak (GSM900) Pa Iref ~2.1V peak (GSM1800@1900) Mode ~1.8V Replace faulty PA & ant switch components EDGE troubleshooting Issue 1 11/2004 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
  • Page 17 4G VCO signal output: -3589.6MHz (GSM900) Synthesizer -3495.6MHz (GSM1800) troubleshooting -3760MHz (GSM1900) Level > - 10dBm Check modulator output components Replace HELGO and VPECTRL3 signal Replace faulty component(s) COMPANY CONFIDENTIAL Issue 1 11/2004 Copyright © 2004 Nokia. All Rights Reserved.
  • Page 18 -Iref _900 ~2V peak -Iref_1800_1900 ~2.1V peak -VTXB = 2.8V pulsed -Mode = ~1.8V Replace faulty component(s) Replace PA Check components around PA Replace HELGO Replace faulty component(s) Issue 1 11/2004 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
  • Page 19 RM-12 CCS Technical Documentation Pictures of EDGE transmitter signals Figure 12: I_ref_900 power level 8 at R7019/C7001 Figure 13: VTXB 900 power level 8 at C7013 COMPANY CONFIDENTIAL Issue 1 11/2004 Copyright © 2004 Nokia. All Rights Reserved.
  • Page 20 RM-12 CCS Technical Documentation Figure 14: I_ref_1800/1900 power level 2 at R7017/C7000 Figure 15: VTXB 1800/1900 power level 2 at C7014 Issue 1 11/2004 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
  • Page 21 Figure 16: TXA 900/1800/1900 at C7309 Figure 17: TXI/TXQ signal at C7311/C7312/R7304/R7305...
  • Page 22 Figure 18: VPECTRL3 (ALC) signal at C7309...

  • Page 23: Egsm900, Gsm1800 And Gsm1900 Receiver

    Initialize connection to phone. (Use FBUS driver when using DAU-9S, COMBOX driver when using FPS-8.) Choose product from the menu: File -> Choose product -> RM-12 From toolbar, set operating mode to "Local" Activate RF controls window from the menu: Testing ->...
  • Page 24 Signal part frequency 67.7kHz sine. DC level of signal part is 1.35V. DC level can variate about +/-100mV between I and Q signals and between different bands as well. COMPANY CONFIDENTIAL Issue 1 11/2004 Copyright © 2004 Nokia. All Rights Reserved.
  • Page 25 (shorter) is monitoring and 2 burst (longer) is own RX burst. Trace1: External LNA VCC supply voltage at burst mode, input level –90 dBm. Measured from testpoint LNA_VCC. Issue 1 11/2004 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
  • Page 26 Used channel 37, input signal 942.46771 MHz, level –90 dBm at antenna port, AGC setting 12. Phase difference should be 90 degrees between RX I and Q signals at all bands. COMPANY CONFIDENTIAL Issue 1 11/2004 Copyright © 2004 Nokia. All Rights Reserved.
  • Page 27 (right value add +26dB) *** DC-level of RXI/RXQ in continuous mode will decrase slowly. The original Check HELGO level can be restored by N7300 N500 rewriting gain set Issue 1 11/2004 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
  • Page 28 (right value add +26dB) *** DC-level of RXI/RXQ in continuous mode will decrase slowly. The original Check HELGO level can be restored by N7300 N500 rewriting gain set COMPANY CONFIDENTIAL Issue 1 11/2004 Copyright © 2004 Nokia. All Rights Reserved.
  • Page 29 (right value add +26dB) *** DC-level of RXI/RXQ in continuous mode will Check HELGO decrase slowly. The original Synthesizer N7300 N500 level can be restored by troubleshooting rewriting gain set Issue 1 11/2004 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.

  • Page 30: Synthesizer

    Initialize connection to phone. (Use FBUS driver when using DAU9S, COMBOX driver when using FPS-8.) Select product from the menu: File -> Choose product -> RM-12 From toolbar, set operating mode to "Local" Activate RF controls window from the menu: Testing ->...
  • Page 31 0V ? OK ? Replace faulty component(s) Check with oscilloscope: Check VCO control VCO control voltage loop components from VCO pin OK ? >4.0 V ? Replace Issue 1 11/2004 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
  • Page 32 RM-12 CCS Technical Documentation Pictures of synthesizer signals Figure 8: 26MHz at G7200 pin out Figure 9: 26MHz RFCLK at R2902/C2902 COMPANY CONFIDENTIAL Issue 1 11/2004 Copyright © 2004 Nokia. All Rights Reserved.
  • Page 33 RM-12 CCS Technical Documentation Figure 10: 1800 TX, channel 512, burst mode Figure 11: 1900 RX, channel 810, continuous mode Issue 1 11/2004 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
  • Page 34 RX Channel Select Filter Cal RX Cal RX Band Filter Response Cal RX DtoS Balance Cal TX IQ Tuning TX Power Level Tuning Helgo (N7300) PA (N700) ASM (Z7100) VCO (G7201) TX SAW (Z7000) RX LNA (V7100) RX SAW (Z7101,Z7102,Z7103) NO COMPANY CONFIDENTIAL Issue 1 11/2004 Copyright © 2004 Nokia. All Rights Reserved.

  • Page 35: Baseband Troubleshooting

    ”Charging is not working” • ”Time is lost during battery change” • ”Charging takes too long” • ”Operating time is very short” With these symptoms, follow “Power troubleshooting”. Issue 1 11/2004 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
  • Page 36 ”Phone does not find signal” • ”Call is often dropped” See “RF troubleshooting”. Problems related to camera • “Bad image quality” • ”Picture cannot be taken” See “Camera module troubleshooting”. COMPANY CONFIDENTIAL Issue 1 11/2004 Copyright © 2004 Nokia. All Rights Reserved.

  • Page 37: Dead Or Jammed Device Troubleshooting

    9S cable. Scan product RM-12 Go to power Flash the phone Succeed found troubleshooting Normal Go to/visit display Normal Go to OMAP1510 operation troubleshooting operation troubleshooting End test Issue 1 11/2004 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
  • Page 38 OK/fixed, troubleshooting problem solved? Go to /(visit) APE NAND troubleshooting Visit SDRAM Was it a NAND troubleshooting problem? Was it a SDRAM problem? Replace engine board. OMAP1510 D4800 COMPANY CONFIDENTIAL Issue 1 11/2004 Copyright © 2004 Nokia. All Rights Reserved.
  • Page 39 Phone might been R4808 = 75MHz, frequency at dropped, solder Change SDRAM (1.8V). R4808 balls cracked, D5080 >70MHz?, level replace D5080 0 - ~V18 Go to SDRAM troubleshooting page 2 Issue 1 11/2004 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
  • Page 40 ST_APE_RAM_ Change SDRAM value, approx Fail SDCLK TEST with D5080 22ohm frequency Phoenix >>70Mhz Pass Problem Go to OMAP1510 occurs while troubleshooting booting? Go to Seija/NAND troubleshooting COMPANY CONFIDENTIAL Issue 1 11/2004 Copyright © 2004 Nokia. All Rights Reserved.
  • Page 41 R5001, both ~10k both ~10k Measure CS0# at J4805 Go to OMAP1510 MDOC damaged, and OE# troubleshooting replace D5000 J4802, toggling? Memory corrupted, reflash, or replace MDOC D5000 Issue 1 11/2004 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.

  • Page 42: Asic Is Changed

    UEM can be served. Selftest functions are executed when the phone is powered on and if one or more selftest functions fail, the message “Contact Service” is shown on the display. COMPANY CONFIDENTIAL Issue 1 11/2004 Copyright © 2004 Nokia. All Rights Reserved.
  • Page 43 TxQdp and RxQdp signals between UPP and UEM. This function tests if the backup battery ST_BACKUP_BATT_TEST was ok during power-up. This test verifies, whether BT MCM ST_LPRF_IF_TEST internal selftests are o.k. Issue 1 11/2004 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
  • Page 44 Purpose of this test is to check that touch interface is working properly. ST_APE_DAC_CTRL_IF_TEST Purpose of this test is to check connec- tions (I2C lines) between APE and DAC. Audio driver provides the test interface. COMPANY CONFIDENTIAL Issue 1 11/2004 Copyright © 2004 Nokia. All Rights Reserved.
  • Page 45 MOSIM environment. Also ST_FAIL situation would be too dif- ficult to simulate comparing to benefits. ST_PWR_KEY_TEST Purpose of this test is to check that pwr key is working properly. Issue 1 11/2004 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.

  • Page 46: Flashing Troubleshooting

    From APE flashing flashing troubleshooting troubleshooting Check cables and flashing adapter. Verify that you have the right data package RM-12 Check Nokia 7710 flashing instructions Go to CMT flashing troubleshooting COMPANY CONFIDENTIAL Issue 1 11/2004 Copyright © 2004 Nokia. All Rights Reserved.
  • Page 47 Phoenix pass No, totally dead device Go to CMT Go to OMAP1510 Go to USB Go to APE power troubleshooting troubleshooting troubleshooting troubleshooting Reflash Issue 1 11/2004 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
  • Page 48 IS FBUS TX set LOW after it has been HIGH Check Phoenix Prommer Tool window information Wrong Manufacturer Change flash ID or (D3000) Device ID Go to APE flashing Reflash troubleshooting COMPANY CONFIDENTIAL Issue 1 11/2004 Copyright © 2004 Nokia. All Rights Reserved.

  • Page 49: Power Troubleshooting

    D4800 Omap 1510 io, camera con- verter, display module, N4400 touch controller N5200 VMMC C5202 N2000 Vout C2000 Pop-port N2001 C2005 D4800 Omap 1510 USB D4420 VLED 10..11V C4424 Backlight, keylight Issue 1 11/2004 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
  • Page 50 C2204=1.8V to voltage not in D2200 button pressed button pressed D2800 and D3000, spec. C2205=1.5V to D2800 Check CMT Res e t and clocks. COMPANY CONFIDENTIAL Issue 1 11/2004 Copyright © 2004 Nokia. All Rights Reserved.
  • Page 51 5.7V Measure Vchar from fuse F2020 Charging OK 5.7V Charging OK Change fuse Disassemble F2020 and V2020. phone. Check charger connector. Measure Vchar from L2020 5.7V Change L2020 Issue 1 11/2004 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
  • Page 52 OK? 1.35V ? <1V ? Ref. voltage found Change filter Change coil and Shortcut in UEM fault at either end of (L4200) retest V18 V18 line L4200 ? COMPANY CONFIDENTIAL Issue 1 11/2004 Copyright © 2004 Nokia. All Rights Reserved.
  • Page 53 Measure of V6031 and resistance over replace the C4801. component, if R >>1M ? necessary. Change B4800. If this doesn't help, Check completed change C4800, C4801 and C4802. Issue 1 11/2004 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
  • Page 54 Voh ~ 2.8V ? PURX to & solder joints and change the MPU_nReset delay should OK ? chip, if necessary. be 65-195ms ! (Fig. 5) Fix solder joints or Check completed change R4802 COMPANY CONFIDENTIAL Issue 1 11/2004 Copyright © 2004 Nokia. All Rights Reserved.

  • Page 55: Audio Troubleshooting

    C hange U EM C hange com ponents if earpiece pads ok? earpiece pads ok? needed. D oes the audio work C hange U PP in a call? EN D Issue 1 11/2004 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
  • Page 56 U EM route trough R 2121 and C 2120. C hange needed com ponents. D oes the audio work C hange U PP during a call? EN D COMPANY CONFIDENTIAL Issue 1 11/2004 Copyright © 2004 Nokia. All Rights Reserved.
  • Page 57 C hange OMAP signal f rom OMAP to C ODEC present (D 4800) at J 4100? C hange audio C ODEC (N 4100) See the following flow chart, Issue 1 11/2004 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
  • Page 58 Are audio signals f rom U EM OK? C hange (at C 4104, R 4100, U EM C 4105) D oes audio work in C hange a call? U PP COMPANY CONFIDENTIAL Issue 1 11/2004 Copyright © 2004 Nokia. All Rights Reserved.
  • Page 59 Change OMAP signal f rom OMAP (D 4800) to C OD EC present at J4100? C hange audio C OD EC (N 4100) See the following flow chart, Issue 1 11/2004 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
  • Page 60 Are audio signals f rom U EM OK? C hange (at C 4104, R 4100, U EM C 4105) D oes audio work in C hange a call? U PP COMPANY CONFIDENTIAL Issue 1 11/2004 Copyright © 2004 Nokia. All Rights Reserved.
  • Page 61 C hange U EM C 2133. C heck also R 2127. C hange com ponents if needed. D oes the audio work C hange U PP in a call? EN D Issue 1 11/2004 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.

  • Page 62: Display Troubleshooting

    Display optical problems. Display is dimm, connection problems Pixel defects. key leds not ok Goto Blank Display Goto Touchscreen Goto Backlight Goto Faulty Display Troubleshooting Troubleshooting Troubleshooting Troubleshooting COMPANY CONFIDENTIAL Issue 1 11/2004 Copyright © 2004 Nokia. All Rights Reserved.
  • Page 63 (clock is not active in partial mode) Measure Flash phone. display clock No clock Display OK? from C4444. 12.5MHz clock detected Go to blank display troubleshooting page 2 Issue 1 11/2004 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
  • Page 64 Start phone again with display flex connected and retest. No toggling Replace Z4422 and Reflash phone. Goto OMAP Z4423 EMI Display troubleshooting filter. Display working? working? COMPANY CONFIDENTIAL Issue 1 11/2004 Copyright © 2004 Nokia. All Rights Reserved.
  • Page 65 Check controller No activity ChipSelect from R4400 Toggling Reflash phone Change Touchscreen Phone already N4400. working? reflashed? Working? Reflash phone Calibrate Touchscreen touchscreen. working? Go to OMAP troubleshooting Issue 1 11/2004 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
  • Page 66 -Display background color is clearly too yellowish or bluish -Backlight is not even, left side remarkable brighter than right side of the display Change display module, calibrate touchscreen COMPANY CONFIDENTIAL Issue 1 11/2004 Copyright © 2004 Nokia. All Rights Reserved.

  • Page 67: Pixel Defects

    Dot Pitch : 0.042 × 0.126 (mm) Pixel Per Inch : 201.59 Color Arrangement : RGB Stripe Figure 1: RM-12 dots and pixels Pixel defect criteria • Bright dots: 3 or less or • Black dots: 3 or less Total max 3 •...
  • Page 68 RM-12 CCS Technical Documentation Figure 2: Definition of 1 dot defect = 1 or 2 defected horizontal sub-pixels (bright/black) COMPANY CONFIDENTIAL Issue 1 11/2004 Copyright © 2004 Nokia. All Rights Reserved.

  • Page 69: Backlight Troubleshooting (1)

    RM-12 Nokia Customer Care Backlight troubleshooting (1) Issue 1 11/2004 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.

  • Page 70: Backlight Troubleshooting (2)

    Start from battery side VBAT. Check also C4423 and R4446 (value = 27R) soldering. Check X4421 pin soldering. Backlight OK? C4425 = VBAT? PWB failure PWB failure Issue 1 11/2004 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.

  • Page 71: Backlight Troubleshooting (3)

    R4435 V4421, R4436, N4421, R4443 and backlight power components: R4441, R4442, R4446 V28 should be found from C4438. Check connector X4421 Backlight OK? soldering. Backlight OK? PWB failure COMPANY CONFIDENTIAL Issue 1 11/2004 Copyright © 2004 Nokia. All Rights Reserved.

  • Page 72: Hall Sensor Troubleshooting

    Hall sensor troubleshooting Start Check pull-up resistor and hall sensor soldering. Resolder if Battery cover pull-up resistor needed R4449 Check battery cover that magnet is present Check V28 from Goto Power hall sensor pin 1 Troubleshooting 2.78V Check pull-up Goto Power resistor Troubleshooting connection to V28...

  • Page 73: Keyboard Troubleshooting

    Keyboard troubleshooting Start Problem type One or more rocker, Power button front or top buttons don´t work don´t work Replace Is keypad flex broken or Change A-frame Power button is loose button connector disconnected assembly or missing from flex? Check engine connector that Change connector is is properly assembled.

  • Page 74: Camera Module Troubleshooting

    Sensitivity: camera module's sensitivity to light. In equivalent illumination conditions, a less sensitive camera needs longer exposure time to gather enough light for forming a good image. Analogous to ISO speed in photographic film. Issue 1 11/2004 Copyright©Nokia. All rights reserved Page 72...
  • Page 75 Due to longer exposure time and larger gain value noise level is increasing under low light conditions. Sometimes blurring may even happen at daytime if image is taken very carelessly. See Handshake has caused blurring of this image for exam- Copyright ©Nokia. All rights reserved Page 73 Issue 1 11/2004...
  • Page 76 This is normal behavior, do not change the camera module. Figure 3: Near objects in image get skewed when shooting from a moving car 4 Temperature: high temperatures inside the mobile phone will cause more noise Issue 1 11/2004 Copyright©Nokia. All rights reserved Page 74...
  • Page 77 In practice this means that when taking a picture inside e.g. having a window behind object, will produce poor results. Copyright ©Nokia. All rights reserved Page 75 Issue 1 11/2004...
  • Page 78 Flickering occurs also under high artificial illumination level. This is normal behavior, do not change the camera module. Figure 6: Flicker in image of white, uniform object illuminated by strong fluorescent light Issue 1 11/2004 Copyright©Nokia. All rights reserved Page 76...
  • Page 79 This is normal behavior, do not change the camera module. Figure 7: A lens reflection effect caused by sun shining above the scene Figure 8: A good picture taken indoor Copyright ©Nokia. All rights reserved Page 77 Issue 1 11/2004...
  • Page 80 RM-12 Nokia Customer Care Figure 9: A good picture taken outdoors Issue 1 11/2004 Copyright©Nokia. All rights reserved Page 78...

  • Page 81: Camera Construction

    Figure 10: Cross section of the camera module and assembly principle Figure 11: Bottom view including camera module serial numbering Copyright ©Nokia. All rights reserved Page 79 Issue 1 11/2004...
  • Page 82 Good quality PC monitor is preferred for analysis. Search carefully since finding these defects is not always easy. Figure Effects of dust on optical path is an example of image containing easily detectable dust problems. Issue 1 11/2004 Copyright©Nokia. All rights reserved Page 80...
  • Page 83 Any particles inside the cavity between protection window and lens have most probably been trapped there in assembly phase at Nokia factory. Unauthorized disassembling of product can also be root cause for the problem. However, in most cases it should be possible to remove the particle(s) by using clean compressed air.
  • Page 84 Check the window by looking carefully through it when replacing the module. As a reference image A good picture taken indoor and Issue 1 11/2004 Copyright©Nokia. All rights reserved Page 82...
  • Page 85 That is why the cleanness of the protection window should always be checked and the window should be wiped clean with a suitable cloth. Figure 13: Image taken with clear protection window Copyright ©Nokia. All rights reserved Page 83 Issue 1 11/2004...
  • Page 86 If fault is in the camera module typically bit error is visible only when using some specific image resolution. E. g. in viewfinder fault might exist but not in full size image. Issue 1 11/2004 Copyright©Nokia. All rights reserved Page 84...
  • Page 87 RM-12 Nokia Customer Care Figure 15: Example about bit errors caused by JPEG compression Copyright ©Nokia. All rights reserved Page 85 Issue 1 11/2004...

  • Page 88: Camera Fault Finding Diagrams

    Re-run the test. Is Is the result pass? it pass? Change N Go to Camera Change 4434. Re- baseband HW run the test. Is it troubleshooting. pass? Is the Camera working now? Issue 1 11/2004 Copyright©Nokia. All rights reserved Page 86...
  • Page 89 Check R4424 and amplitude 300mV, common R4431. Are they mode voltage 0.9V nominal. (Use viewfinder mode and oscilloscope. AC mode for amplitude and DC mode for common mode voltage) Camera OK Copyright ©Nokia. All rights reserved Page 87 Issue 1 11/2004...
  • Page 90 RM-12 Nokia Customer Care Bad image quality Issue 1 11/2004 Copyright©Nokia. All rights reserved Page 88...

  • Page 91: Fm Radio Troubleshooting

    RM-12 Nokia Customer Care FM Radio troubleshooting FM radio component layout Trace Layout Copyright ©Nokia. All rights reserved Page 89 Issue 1 11/2004...
  • Page 92 FM radio RF test signal is connected from FM signal generator to FM radio antenna production test point J2027. RF test signal parameters: • Amplitude, A, -67.0 dBm Issue 1 11/2004 Copyright©Nokia. All rights reserved Page 90...
  • Page 93 Figure 16: Audio output from FM radio test points J6128 and J6129 or J2023 and J2024, with FM test signal Figure 17: FM radio clock from test point J6103, 32 kHz frequency clock signal, when radio is on. Copyright ©Nokia. All rights reserved Page 91...
  • Page 94 CONT SGL FREE RUN VIDEO LINE WA SB EXTERNAL CORR SC FS SYNC CRD CENTER 196.450 MHz SPAN 1.000 MHz TV TRIG #RES BW 10 kHz #VBW 10 kHz #SWP 20.0 msec Issue 1 11/2004 Copyright©Nokia. All rights reserved Page 92...

  • Page 95: Usb Problems (1)

    Damaged visually and check solder broken USB device solder joints connections PC recognizes Undamaged the phone as USB device Goto USB troubleshooting page 2 Copyright ©Nokia. All rights reserved Page 93 Issue 1 11/2004...

  • Page 96: Usb Problems (2)

    USB- (pin and capacitors the phone as PC recognizes the #7) on X2021 toggling phone as USB C2005-C2007 and USB device? with device? resistor R2004 oscilloscope Go to OMAP1510 Toggling troubleshooting Issue 1 11/2004 Copyright©Nokia. All rights reserved Page 94...

  • Page 97: Bc3 Bluetooth Troubleshooting

    Choose: Testing > Bluetooth locals • Run BER test when JBT-9 box in close to BT antenna (in 10 centime- ters) Figure 20: An example of Phoenix settings for Bluetooth troubleshooting Copyright ©Nokia. All rights reserved Page 95 Issue 1 11/2004...
  • Page 98 RM-12 Nokia Customer Care Bluetooth Troubleshooting Diagram Figure 21: Bluetooth troubleshooting diagram for RM-12 FAULT? Check RF path Connection components Repeat to JBT9, OK? (L6031, L6032, <=0.1% C6046) Test, OK? soldering/resolder Check Vreg in Replace Check regulator: -2.8V from Filter&...
  • Page 99 RM-12 Nokia Customer Care Figure 22: Bluetooth problems (1) Figure 23: Bluetooth problems (2) Copyright ©Nokia. All rights reserved Page 97 Issue 1 11/2004...
  • Page 100 RM-12 Nokia Customer Care Figure 24: Bluetooth assembly drawing) Issue 1 11/2004 Copyright©Nokia. All rights reserved Page 98...

  • Page 101: Mmc Troubleshooting (1)

    Go to OMAP1510 and MMC_CMD(pin R5201 and signals not damaged troubleshooting #2) from connector MMC_CLK X5200 R4807 Replace damaged resistors Signal approximately Go to MMC as in Figures troubleshooting MMC_CLK&MMC_CMD page 2 Copyright ©Nokia. All rights reserved Page 99 Issue 1 11/2004...

  • Page 102: Mmc Troubleshooting (2)

    1 Signals correct at connector X5200? Replace R5200 Signals correct at MMC working? X5200? Connector X5200 MMC working? soldering damaged? Replace Connector connector damaged? X5200 MMC working? Go to OMAP1510 troubleshooting Issue 1 11/2004 Copyright©Nokia. All rights reserved Page 100...

  • Page 103: Accessory Troubleshooting

    R2121 UEM side. Does remote control UEM (C2120, R2121 and Is it low (~1.1V) switch work? L2003) when headset button Change components if is pressed? needed Change UEM Change user's headset Copyright ©Nokia. All rights reserved Page 101 Issue 1 11/2004...

  • Page 104: Sim Troubleshooting

    GSM system 1.083 MHz or 3.25 MHz. The data baudrate is SIM card clock frequency divided by 372 (by default), 64, 32 or 16. Issue 1 11/2004 Copyright©Nokia. All rights reserved Page 102...
  • Page 105 Ch4 I/O Measured with 3Vsim Figure 27: SIM answer to reset SIM answer to reset CH1 = SIM_CLK CH2 = SIM_RST CH3 = SIM_I/O CH4 = SIM_PWR Measure points SIM connector Copyright ©Nokia. All rights reserved Page 103 Issue 1 11/2004...
  • Page 106 RM-12 Nokia Customer Care Figure 28: SIM Clk 3.25MHz SIM_Clk_3.25MHz CH1 = SIM_CLK Measure points SIM connector NOTE! Remember to check the two PHOENIX test cases before changing UPP. Issue 1 11/2004 Copyright©Nokia. All rights reserved Page 104...
  • Page 107 Are the signals present? present? R2700 Change SIM ASIP, R496 Analyse signals & look for errors in rise / fall times due Problem solved? to wrong fitted / faulty passives Copyright ©Nokia. All rights reserved Page 105 Issue 1 11/2004...

  • Page 108: Vibra Troubleshooting

    C2401 is component itself pulsed down to zero that makes Change UEM while Vibra is switched noise? Check C134, C135, C2401 V132 and V131 Change the Vibra Vibra works and retest. Issue 1 11/2004 Copyright©Nokia. All rights reserved Page 106...

  • Page 109: Clocks And Reset Troubleshooting

    SIMClk 3.25MHz PCMCLK CamClk 267kHz 12MHz SDRAMClk CMT FlashClk 75MHz max 54MHz I2S Clk 6MHz Camera converter MDOC SDRAM FLASH module FLASH Camera Audio ZOCUS BCLK 12MHz I2C SCK 400 kHz Copyright ©Nokia. All rights reserved Page 107 Issue 1 11/2004...

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