Nokia Customer Care RH-30/RH-31 Series Cellular Phones Troubleshooting Instructions Issue 2 11/2004 © 2004 Nokia Corporation.
RH-30/RH-31 Company Confidential Troubleshooting Instructions Nokia Customer Care This page left blank intentionally. Page 2 © 2004 Nokia Corporation.
Company Confidential Nokia Customer Care RH-30/RH-31 Troubleshooting Instructions Table of Contents Page No RF Troubleshooting................................................................................................................................... 5 Introduction to RF troubleshooting ................................................................................................ 5 RF key component placement ........................................................................................
RH-30/RH-31 Company Confidential Troubleshooting Instructions Page 4 © 2004 Nokia Corporation.
Company Confidential Nokia Customer Care RH-30/RH-31 Troubleshooting Instructions RF Troubleshooting Introduction to RF troubleshooting Measurements should be done using Spectrum analyzer with high-frequency highimpedance passive probe (LO-/reference frequencies and RF power levels) and Oscilloscope with a 10:1 probe (DC-voltages and low frequency signals). The RF-section is build around one RF-ASIC (HELGO N500). For easier troubleshooting, this RF troubleshooting document is divided into sections.
RH-30/RH-31 Company Confidential Troubleshooting Instructions Nokia Customer Care RF key component placement Figure 1: Component placement 1 Antenna switch 1900 RX Saw 1900/1800 TX Balun 1900 RX Lna PA 1900 RX balun TX 850/900 saw 1800 RX Saw 850/900 RX Saw Helgo VCO VCTCXO VCO Balun Page 6 © 2004 Nokia Corporation.
Company Confidential Nokia Customer Care RH-30/RH-31 Troubleshooting Instructions RF measurement points Figure 2: Component placement 2 To Antenna VBATT ASM out 1900Rx RX 1900 saw out VANT_2 1800/1900 PA in LNA P VTXB 1800/1900 Pcrtl 1800/1900 ASM Out Rx 850/900 LNA VCC MODE VANT_3 Vpcrtl 850/900 ASM out 1800Rx VTXB 850/900 VANT_1 850/900 PA in ASM In Tx1800/1900 ASM In Tx850/900 I_ref_1800/1900 VPECTRL3(ALC) VR2 I_ref_850/900 RFBusEn VTXLO 850/900 RFBusData 1900 RX in RFBusRes 1800 RX in RF
RH-30/RH-31 Company Confidential Troubleshooting Instructions Nokia Customer Care GSM 850, GSM900, GSM1800 & GSM1900 Transmitter General instructions for Tx troubleshooting Kindly refer to the Service Software Section, Service Concept dagram (p.40) Connect test jig to computer with DAU-9S cable or to FPS-8 Flash Prommer with XCS-4 modular cable. Make sure that you have PKD-1 dongle connected to computers parallel port. Connect DC power supply to module test jig with FLC-2 cable.
Company Confidential Nokia Customer Care RH-30/RH-31 Troubleshooting Instructions band or 661 on GSM1900 (Defaults) • Set Tx PA mode to "Free" (Default) • Set power level to 5 (Default = 19) on GSM 850 and GSM900 or to 0 (Default = 15) on GSM1800 or GSM1900 Issue 2 11/2004 © 2004 Nokia Corporation.
RH-30/RH-31 Company Confidential Troubleshooting Instructions Nokia Customer Care Transmitter troubleshooting diagram Figure 3: Transmitter troubleshooting TX OK TX Troubleshooting Yes Check output signal level: +32…+33dBm@897.4MHz(GSM900) +32...+33dBm@836.6MHz (GSM850) +29…+30dBm@1747.8 and 1880MHz +32...+33dBm@897.4MHz (GSM900) (GSM1800&1900) +29...+30dBm@1747.
Company Confidential Nokia Customer Care RH-30/RH-31 Troubleshooting Instructions Figure 4: HELGO IC troubleshooting Helgo troubleshooting Check with oscilloscope: -TXI/TXQ signals -VR1, VR2, VR4, VR5, VR6 =2.8V -VrefRF01 = 1.35V -Helgo serial interface -TXP & TXC signals OK? No Baseband troubleshooting Yes Check with RF probe: 4G VCO signal output: -3589.6MHz(GSM850) (GSM900) -3346.4MHz -3495.6MHz(GSM900) (GSM1800) -3589.6MHz -3760MHz (GSM1900) -3495.
RH-30/RH-31 Company Confidential Troubleshooting Instructions Nokia Customer Care Figure 5: PA and Antenna Switch troubleshooting PA & ant switch troubleshooting Check with RF probe signal level on PA input >= 0dBm OK? Yes Check with oscilloscope: -VANT1 -VANT1 (GSM850/900 (GSM900) Yes -VANT2 (GSM1800) -VANT3 (GSM1900) OK? Yes Replace ant. switch No Check with oscilloscope: -VBATT ~4V -VTXB = 2.
Company Confidential Nokia Customer Care RH-30/RH-31 Troubleshooting Instructions Pictures of transmitter signals TXI VPCT 200mV/div 100us/div 200mV/div 1 VPCTRL _850/900 power level high at R703/C703 VPCTRL_1800/1900 power level high at R704/C704_ 100us/div X I/Q at R516/517 power level high Random data 1 500mV/div 100us/div VANT_1 / GSM850/900 TX at C805 VANT_2 / GSM1800 TX at R804 500mV/div 100us/div VANT_1,VANT_2,VANT_3 VANT_3 / GSM1900 TX at C806 OV ( no signal/ Flatline on Oscillosco
RH-30/RH-31 Company Confidential Troubleshooting Instructions Nokia Customer Care Figure 6: Tx out signal, 900 band, burst mode, channel 37 Marker 1 [T1] RBW 100 kHz Ref Lvl 28.46 dBm VBW 100 kHz 34 dBm 897.38997996 MHz SWT 2 s RF Att Unit 40 dB dBm 34 21 dB Offset 30 1 A 20 10 1MA 0 -10 -20 -30 -40 -50 -60 -66 Center 897.4 MHz Date: Page 14 28.APR.2003 200 kHz/ Span 2 MHz 15:09:42 © 2004 Nokia Corporation.
Company Confidential Nokia Customer Care RH-30/RH-31 Troubleshooting Instructions Additional Information for EDGE Troubleshooting EDGE mode troubleshooting differs slightly from basic GSM troubleshooting. Establish connection to the phone normally (see GSM850/900/1800/1900 troubleshooting instructions).
RH-30/RH-31 Company Confidential Troubleshooting Instructions Nokia Customer Care Figure 7: Transmitter EDGE troubleshooting TX OK TX EDGE Troubleshooting Yes Check output signal level: +24…+30dBm@897.4MHz(GSM900) +24...+30dBm@836.6MHz(GSM850) +22…+29dBm@1747.8 and 1880MHz +24...30dBm@897.4MHz(GSM900) (GSM1800&1900) +22...+29dBm@1747.
Company Confidential Nokia Customer Care RH-30/RH-31 Troubleshooting Instructions Figure 8: Helgo EDGE troubleshooting Helgo EDGE troubleshooting Check with oscilloscope: -TXI/TXQ signals -VR1, VR2, VR4, VR5, VR6 =2.8V -VrefRF01 = 1.35V -Helgo serial interface -TXP & TXC & TXA OK? No Baseband troubleshooting Yes Check with RF probe: 4G VCO signal output: -3346.4MHz(GSM850) -3589.6MHz (GSM900) -3589.6MHz(GSM900) -3495.6MHz (GSM1800) -3495.
RH-30/RH-31 Company Confidential Troubleshooting Instructions Nokia Customer Care Figure 9: Pa & ant switch EDGE troubleshooting PA & ant switch EDGE troubleshooting Check with RF probe signal level on PA input: ~ -8dBm@PCL=8 (GSM900) (GSM850&900) ~ -10dBm@PCL=2 (GSM1800&1900) OK? Yes Check with oscilloscope: -VANT1 (GSM850/900) (GSM900) -VANT2 (GSM1800) -VANT3 (GSM1900) OK? Yes Yes Replace ant. switch No Check with oscilloscope: -VBATT ~4V , Iref_850~2V -Iref _900 ~2V peak -Iref_1800_1900 ~2.
Company Confidential Nokia Customer Care RH-30/RH-31 Troubleshooting Instructions Pictures of EDGE transmitter signals Figure 10: I_ref_850/900 power level 8 at R701/C701 Figure 11: VTXB 850/900 power level 8 at C713 Issue 2 11/2004 © 2004 Nokia Corporation.
RH-30/RH-31 Company Confidential Troubleshooting Instructions Nokia Customer Care Figure 12: I_ref_1800/1900 power level 2 at R700/C700 Figure 13: VTXB 1800/1900 power level 2 at C714 Page 20 © 2004 Nokia Corporation.
Company Confidential Nokia Customer Care RH-30/RH-31 Troubleshooting Instructions Figure 14: TXA 850/900/1800/1900 at C538 Figure 15: TXI/TXQ signal at C535/C536/R516/R517 Issue 2 11/2004 © 2004 Nokia Corporation.
RH-30/RH-31 Company Confidential Troubleshooting Instructions Nokia Customer Care Figure 16: VPECTRL3 (ALC) signal at C512 Page 22 © 2004 Nokia Corporation.
Company Confidential Nokia Customer Care RH-30/RH-31 Troubleshooting Instructions GSM 850, GSM900, GSM1800 and GSM1900 Receiver General instructions for Rx troubleshooting Connect test jig to computer with DAU-9S cable or to FPS-8 Flash Prommer with XCS-4 modular cable. Make sure that you have PKD-1 dongle connected to computers parallel port. Connect DC power supply to module test jig with FLC-2 cable. Set the DC supply voltage to 4,2 V .
RH-30/RH-31 Company Confidential Troubleshooting Instructions Nokia Customer Care Apply 881,6671 MHz (channel 190 + 67,710 KHz offset), 942.46771 MHz (channel 37 + 67.710 kHz offset), 1842.86771 MHz (channel 700 + 67.710 kHz offset) or 1960.06771 MHz (channel 661 + 67.71 kHz) –90 dBm signal to the RF-connector (remember to compensate for cable attenuation).
Company Confidential Nokia Customer Care RH-30/RH-31 Troubleshooting Instructions Figure 18: GSM1900 RX I or Q signal (trace2), burst mode. GSM1900 receiver burst mode I or Q signal at ch 661 with input signal 1960.067MHz, level –90 dBm at RF-connector. Trace2: With wider time scaling both monitoring and own RX bursts are seen, 1st burst (shorter) is monitoring and 2nd burst (longer) is own RX burst. Trace1: External LNA VCC supply voltage at burst mode, input level –90 dBm.
RH-30/RH-31 Company Confidential Troubleshooting Instructions Nokia Customer Care Figure 19: RX I&Q, phase difference 90 deg between signals. Detailed view of GSM900 continuous mode RX I and Q signals measured from testpoints RXI and RXQ simultaneously. 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. Page 26 © 2004 Nokia Corporation.
Company Confidential RH-30/RH-31 Troubleshooting Instructions Nokia Customer Care Troubleshooting diagram for GSM850 receiver Phone in “Continuous” mode, AGC setting “12” Figure 20: GSM850 receiver troubleshooting Apply –90dBm 881,66771 942.46771MHz signal from generator to antenna connector Yes Oscilloscope at RX_I 170 Signal 700mVpp DC offset 1.35V*** Frequency 67.
RH-30/RH-31 Company Confidential Troubleshooting Instructions Nokia Customer Care Troubleshooting diagram for GSM900 receiver Phone in “Continuous” mode, AGC setting “12” Figure 21: GSM900 receiver troubleshooting Apply –90dBm 942.46771MHz signal from generator to antenna connector Yes Oscilloscope at RX_I 170 Signal 700mVpp DC offset 1.35V*** Frequency 67.
Company Confidential RH-30/RH-31 Troubleshooting Instructions Nokia Customer Care Troubleshooting diagram for GSM1800 receiver Phone in “Continuous” mode, AGC setting “12 Figure 22: GSM1800 receiver troubleshooting Apply –90dBm 1842.86771MHz signal from generator to antenna connector Yes Oscilloscope at RX_I Signal 140mVpp DC offset 1.35V *** Frequency 67.
RH-30/RH-31 Company Confidential Troubleshooting Instructions Nokia Customer Care Troubleshooting diagram for GSM1900 receiver Phone in “Continuous” mode, AGC setting “12 Figure 23: GSM1900 receiver troubleshooting Apply –90dBm 1960,06771 1842.86771MHz signal from generator to antenna connector Yes No Oscilloscope at RX_I /RXQ Signal 160mVpp DC offset 1.35V *** Frequency 67.
Company Confidential Nokia Customer Care RH-30/RH-31 Troubleshooting Instructions Synthesizer General instructions for synthesizer troubleshooting Connect test jig to computer with DAU-9S cable or to FPS-8 Flash Prommer with XCS-4 modular cable. Make sure that you have PKD-1 dongle connected to computers parallel port. Connect DC power supply or FPS-8 to module test jig with PCS-1 cable. Set the DC supply voltage to 3.9V and set the jumper connector on test jig to "bypass" position.
RH-30/RH-31 Company Confidential Troubleshooting Instructions Nokia Customer Care Figure 24: Synthesizer troubleshooting diagram Synthesizer troubleshooting Yes *(When 2.5kOhm passive probe is used, correct the measurement by +34 dB Set with RF controls: Active Unti = Rx Operation mode = Continuous Yes Synthesizer OK Check with RF probe: -4G VCO out signal -3346.4MHz(GSM850) - 3589.6 MHz (GSM900) -3495.6 MHz (GSM1800) -3589.6MHz(GSM900) - 3760 MHz (GSM1900) -3495.
Company Confidential Nokia Customer Care RH-30/RH-31 Troubleshooting Instructions Pictures of synthesizer signals Figure 25: 26MHz at G501 pin out Figure 26: 26MHz RFCLK at R420/C420 Issue 2 11/2004 © 2004 Nokia Corporation.
RH-30/RH-31 Company Confidential Troubleshooting Instructions Nokia Customer Care Figure 27: 1800 TX, channel 512, burst mode Figure 28: 1900 RX, channel 810, continuous mode Page 34 © 2004 Nokia Corporation.
Company Confidential Nokia Customer Care RH-30/RH-31 Troubleshooting Instructions Figure 29: VCO output, 1800 band, ch700, RX on, continuous output RBW 10 kHz Ref Lvl -15.59 dBm VBW 10 kHz -12 dBm 3.68560301 GHz SWT 25 ms Marker 1 [T1] -12 RF Att Unit 10 dB dBm 1 A -20 -30 -40 1VIEW 1MA -50 -60 -70 -80 -90 -100 -112 Center 3.6856 GHz Date: Issue 2 11/2004 29.APR.2003 100 kHz/ Span 1 MHz 13:41:26 © 2004 Nokia Corporation.
RH-30/RH-31 Company Confidential Troubleshooting Instructions Nokia Customer Care This page left blank intentionally. Page 36 © 2004 Nokia Corporation.
Company Confidential Nokia Customer Care RH-30/RH-31 Troubleshooting Instructions Baseband Troubleshooting Figure 31: Basic baseband test points J480 (JTMS) J184 (JTRst) J482 (JTDI) J483 (VCC VIO) J484 (JTDO) J485 (JTclk_ret) J486 (JTclk) J487 (EMU0) J488 (EMU1) J489 (GND) J402 (PURX) J128 J124 (sclk/Mbus) J122 (STI RxD J120 (STI TxD) J121 (STI Clk) J125 (FbusRx) J126 (FbusTx) J105 J403 (SLEEPX) J103 J104 Issue 2 11/2004 © 2004 Nokia Corporation.
RH-30/RH-31 Company Confidential Troubleshooting Instructions Nokia Customer Care J100 (VBAT) J101 (BSI) J101 (BTEMP) GND J304 J307 J305 J306 J301 J510 J511 J154 J420 VR7 J418 J300 J308 J302 J303 VR3 VR5 J417 J419 VLED J416 VR2 VR4 VR6 RFClk J408 J414 J404 J413 J415 J407 J411 J410 J409 J405 J406 J412 VR1A VCORE VANA VFLASH1 VIO VSIM J386 (SIM I/O) SLEEPCLK J153 J153 VOUT Page 38 © 2004 Nokia Corporation.
Company Confidential Nokia Customer Care RH-30/RH-31 Troubleshooting Instructions The following diagrams describe baseband troubleshooting. Main troubleshooting diagram Figure 32: Baseband general troubleshooting Issue 2 11/2004 © 2004 Nokia Corporation.
RH-30/RH-31 Company Confidential Troubleshooting Instructions Nokia Customer Care Phone is dead Figure 33: Dead phone troubleshooting Start Is phone current 0 mA? Yes Check X100 (contacts, solderings). Is it OK? No Change X100 No Change defect ones Yes Check L260 L265 and C260 C265.
Company Confidential Nokia Customer Care RH-30/RH-31 Troubleshooting Instructions Flash programming fault Figure 34: Flash programming troubleshooting Start Is the FBUS TX-line HIGH after startup? Measure BSI-pulse during Flash operation. Is it OK? No No Check BSI-line including X100,C100,C240,R202 and R206. R310 and R206 No Change UEM UEM If OK, change Yes Yes Measure FBUSTX-line during Flash operation (J411). Is it ~1.8V?. Yes Is FBUSTX-line set to LOW after it has been HIGH? Check R104.
RH-30/RH-31 Company Confidential Troubleshooting Instructions Nokia Customer Care Phone is jammed Figure 35: Jammed phone troubleshooting (1) Phone is jammed Measure VIO, VCORE, VFLASH1, VANA, VR3 voltages. Are they OK ? Check VBATT1-6 VIO,VCORE,VFLASH1,VANA, No VR3 lines. Are they OK ? No Measure 32kHz SleepClkfrom B200. Is it OK ? Measure 32kHz SleepClk from testpoint J404. No Is it OK ? Measure 26MHz RFCLK from G501. Is it OK ? No Yes Measure PURX signal from testpoint J402. Is it HIGH (~1.
Company Confidential Nokia Customer Care RH-30/RH-31 Troubleshooting Instructions Figure 36: Jammed phone troubleshooting (2) Phone is jammed 2 Phone Shutdown after 30s Yes Measure watchdog signal CBUSDA from J414. Is it OK ? No Change UPP Yes No Retest Measure CBUSClk 1MHz signal from testpoint J406. Is it OK ? No Yes Read phone info. Is it OK ? Yes No Measure FBUSRx signal during phone info read from testpoint J412.
RH-30/RH-31 Company Confidential Troubleshooting Instructions Nokia Customer Care SIM card fault (Insert SIM / Card rejected) Figure 37: SIM card troubleshooting Start Insert SIMor Card rejected fault? Yes Set phone to LOCAL mode. Is it OK? No Check BSI-line including X100,C100,C240,R202 and R206, OK,change UEM R206.R310. If OK,Ifchange UEM. No Check VSIM-line R388, (X386,C390,R386,C203). If OK, change R388. If still fail, change UEM. No Check SIM lines (X386). If OK, change R388.
Company Confidential Nokia Customer Care RH-30/RH-31 Troubleshooting Instructions Keypad fault Figure 38: Keypad troubleshooting (1) Start Is the power key working? No Measure voltage from S302. Is it HIGH? No Check R305, R306,C310,S30 2 and line. If OK, change UEM Yes Measure voltage from S302 when Yes pressed. Is it HIGH? Yes Check S302. Is it OK? Yes Phone is dead No No Change S302 Phone is jammed IsContinue the volume UP key working? No Measure ROW0 line from S300. Is it ~1.
RH-30/RH-31 Company Confidential Troubleshooting Instructions Nokia Customer Care Figure 39: Keypad troubleshooting (2) Continue Is the UI-module keys working? No Try to change UI PWB. Are the keys working now? Retest failing UI-module Yes No Check X301 (solder joints and spring contacts). Is it OK? Yes Change X301 No Yes Measure ROW0 - Row4 lines from X301. Are voltage level ~1.8V? No Yes Measure SLEEPX-signal from testpoint J403 when key is pressed. Check lines ROW0 ROW4 from X301.
Company Confidential Nokia Customer Care RH-30/RH-31 Troubleshooting Instructions Display fault Figure 40: Display troubleshooting Start Does the display start? No Try to change UI-module. Is the display working now? Yes Retest failing UI-module No Yes Check X302 (solder joints). Is it OK? No Change X302 Yes Measure VDD (J300) (2.7V) Measure VDD (2.7V) and VDDI (J301) (1.8V). and VDDI (1.8V). Are Are they OK? they OK? No Check X302 and lines again.
RH-30/RH-31 Company Confidential Troubleshooting Instructions Nokia Customer Care Illumination fault Figure 41: Illumination fault troubleshooting 1 Start Start Are the display LEDs working? No Are the keybar LEDs and/or Flashlight working? KB LED No VLED Yes Retest failing display Yes Change display. Are the LEDs working now? No Check V314,V313, R314,R313 If not OK, change defect part Yes Check X302 connector contacts and solder joints.
Company Confidential Nokia Customer Care RH-30/RH-31 Troubleshooting Instructions Figure 42: Illumination fault troubleshooting 2 Start KB LED Are the keyboard LEDs working? No Are the display LEDs and/or Flashlight working? No VLED Flashlight Yes Change UI PWB Yes Retest failing UI PWB Are the LEDs working now? No Check V311,V312, Yes R311,R312 and R307 If not OK, change defect part Check X301 connector contacts and solder joints.
RH-30/RH-31 Company Confidential Troubleshooting Instructions Nokia Customer Care Figure 43: Illumination fault troubleshooting 3 Start Flashlight Are the Flashlight No LEDs working? Flashlight Page 50 Are the display LEDs No and/or keyboard LEDs working? VLED Yes Check V318,V319,V317,V320, R316 and R318 If not OK, change defect part © 2004 Nokia Corporation.
Company Confidential Nokia Customer Care RH-30/RH-31 Troubleshooting Instructions Figure 44: Illumination fault troubleshooting 4 Start VLED Measure VLED=~8.4V when LED driver is enabled. Is this OK? (Note that VLED=VBAT when LED driver is disable!) Yes Retest No Check N300, L300, V300,R301,R315, R317, R325,C302, C305, and C304. (Note that C311 and V31 are not mounted!) If not OK, change defect part Issue 2 11/2004 © 2004 Nokia Corporation.
RH-30/RH-31 Company Confidential Troubleshooting Instructions Nokia Customer Care Charger fault Figure 45: Charging troubleshooting Start Battery bars are working (scroll) Yes Retest No Measure voltage over V100 (TVS). Is it > 3.0V? Check X102, F100, L100, V100, C106, C110 and line. No Change defect part (if any), re-calibrate charge current/voltage. Retest. Yes Read BTEMP value. Compare it to ambient temperature. Is it ~25C? No Check X100, C100, R202, R207, C220 R304 andAre line.
Company Confidential Nokia Customer Care RH-30/RH-31 Troubleshooting Instructions Accessory fault Figure 46: Accessory troubleshooting Start Is accessory detected when connected to system connector? Yes No Check system connector X101 (solder ings, contact plates). Is it OK? No Repair solderings or check contact plates if dirty. Retest. Yes ACI-Accessory Measure ACI-line (pin3). Is it ~0.83...1.13V? Check ACI- line (L106,R103,R102,R109,C103). No If not OK, change defect part and retest.
RH-30/RH-31 Company Confidential Troubleshooting Instructions Nokia Customer Care Audio fault Figure 47: Audio troubleshooting (1) Audio faults Is earpiece working ? Yes No Try to change UI- module. Is it working now ? Check earpiece contact springs from old UI-module and change earpiece and foam to old UImodule. Retest. Yes No Change old UI -module back.Set phone to LOCAL mode. Using Phoenix Audiotest set EXT IN, HP OUT, LOOP ON Measure DCoffset voltage between earpiece pads J310/J311 and GND.
Company Confidential Nokia Customer Care RH-30/RH-31 Troubleshooting Instructions Figure 48: Audio troubleshooting (2) Earpiece 2 Connect EXT audio signal 1kHz (sine, 200mVpp) between XMICP and XMICN pads (X101, 9/10) Measure sine signal from earpiece pads (J310,J311). Is It ~880mVpp ? Yes No Measure sine signal to UEM (R155). Is it ~130mVpp ? No Yes Check C154. If OK change UEM Check C154, R155, C156, R154, C159, R158, R159 and lines.
RH-30/RH-31 Company Confidential Troubleshooting Instructions Nokia Customer Care Figure 49: Audio troubleshooting (3) Audio faults 2 Is microphone working ? Yes No Try to change new UI-module. Is it working Yes now ? No Check mic contact springs from old UI module. If not OK replace microphone in old UI module with new one. Retest. Restore old UI module. Set phone to LOCAL mode. Using Phoenix Audiotest set HP IN, EXT OUT, LOOP ON Measure MICB1voltage from MICP pad. Is it ~2.
Company Confidential Nokia Customer Care RH-30/RH-31 Troubleshooting Instructions Figure 50: Audio troubleshooting (4) Audio faults 3 IHF speaker working ? Try to change new Ccover assembly. Is it working now? No IHF speaker or contact springs fault. Retest. Yes Yes No END Check C160, C161, C169, C166, R163, L151, L152, C164 C173,C174 and and IHF PA output IHF PAlines. output Retest. lines.Retest. Restore old C-cover. Set phone to local mode with Phoenix. Set buzzer ON, vol "9" and freq.
RH-30/RH-31 Company Confidential Troubleshooting Instructions Nokia Customer Care Camera Troubleshooting Figure 51: Component placement VFLASH2 VCAMDIG J972 (CSX) J970 (CLK) J973 (CE) Camera J971 (TxDa) Page 58 © 2004 Nokia Corporation.
Company Confidential Nokia Customer Care RH-30/RH-31 Troubleshooting Instructions Camera fault Figure 52: Camera troubleshooting diagram 2.8V (VFLASH2) from C970 and 1.8V (VCAMDIG) from C983. Check 2.8V (VFLASH2) from FM-radio block Are they OK? Issue 2 11/2004 © 2004 Nokia Corporation.
RH-30/RH-31 Company Confidential Troubleshooting Instructions Nokia Customer Care FM Radio Troubleshooting Figure 53: FM Radio Component layout Figure 54: FM radio block layout. J356 (FMCtrlDa) J357 (FMCtrlClk) J358 (FMWrEn) J359 (FMClk) Page 60 © 2004 Nokia Corporation.
Company Confidential Nokia Customer Care RH-30/RH-31 Troubleshooting Instructions Components L103, L104, L105, C107, C108, C109, C117, C162, C163, R164, R165, R166 and R167 are not shown in the picture. Those components are placed in baseband section, near audio amplifier N150. FM radio troubleshooting diagram Notes to "FM Radio troubleshooting diagram" Use 1MHz 1X probe when measuring Audio and clock signals with oscilloscope. Use active RF probe when measuring frequencies with spectrum analyzer.
RH-30/RH-31 Company Confidential Troubleshooting Instructions Nokia Customer Care Figure 55: FM radio troubleshooting diagram Set phone into local mode. Start FM radio. NO Does the radio start ? Check C374, C375, R375, R358 and measure 32kHz clock signal from J359, retest starting. Start OK ? NO Measure voltages from pins 7 and 34, is it –2.7 V ? Retest starting. Start OK now ? NO YES Check N356 solders (pins 5,6,7,8,9,11, 12,13,17,33,34,35, 36, 37.
Company Confidential Nokia Customer Care RH-30/RH-31 Troubleshooting Instructions Diagrams of FM radio signals Figure 56: Oscilloscope screen shot, Audio output Signal 1: Audio output from PWB test points J103 and J104, with FM test signal, volume 100%. Signal 2: Audio output from FM radio pins 22 and 23(same as in C162 and C163), with FM test signa Figure 57: FM radio clock from test point J359, 32 kHz frequency clock signal, when radio is on.l Issue 2 11/2004 © 2004 Nokia Corporation.
RH-30/RH-31 Company Confidential Troubleshooting Instructions Nokia Customer Care Figure 58: FM frequency from FM radio pin 37, the other end of L358, with FM test signal 15:51:49 03 JUL 2002 REF -20.0 dBm MKR 97.9280 MHz -71.03 dBm #AT 0 dB PEAK LOG SWEEP CONT SGL FREE RUN 10 dB/ VIDEO LINE WA SB EXTERNAL CORR SC FS SYNC CRD CENTER 98.0000 MHz #RES BW 10 kHz SPAN 300.0 kHz #SWP 1.
