Flash programming problem ..................41 Phone jammed ......................42 Charging problem ......................43 SIM card reading problem ..................44 Audio problem ......................45 Keypad problem ......................46 Display problem ......................47 Illumination problem ....................48 ACI Accessory problem ....................49 USB problem ......................50 Nokia Corporation. Issue 1 11/03 Page 3...
Attention: When repairing or tuning transmitter use external DC supply with at least 3A current capability. Set the DC supply voltage to 3.9V and set the jumper con- nector on test jig to "bypass" position. Nokia Corporation. Issue 1 11/03 Page 5...
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- Set Rx/Tx channel to 37 on GSM900 band or 700 on GSM1800 band (Defaults) - Set Tx PA mode to "Free" (Default) - Set power level to 5 (Default = 19) on GSM900 or to 0 (Default = 15) on GSM1800 Nokia Corporation. Page 6 Issue 1 11/03...
VANT_1 at C551, Tx on, burst mode VTX_B_P at C573, Tx on, burst mode VANT_2 at C552, Tx on, burst mode TXP at J502 , Tx on, burst mode TXC at R606/C614, Tx on, burst mode, power level high Nokia Corporation. Issue 1 11/03 Page 13...
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8 9 7 . 4 0 0 M H z S P A N 2 . 0 0 0 M H z Figure 7: Tx out signal, 900 band, burst mode, channel 37 Nokia Corporation. Page 14 Issue 1 11/03...
- Set AGC to "8: FEG ON + 46 dB (Default = "8: FEG ON + 46 dB") - Set Rx/Tx channel to 37 on GSM900 band or 700 on GSM1800 band (Defaults) Apply 942.46771 MHz (channel 37 + 67.710 kHz offset) or 1842.86771 MHz (channel Nokia Corporation. Issue 1 11/03 Page 15...
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GSM900 or GSM1800 receiver: Figure 8: Oscilloscope screen shot Signal amplitude is 152mVpp, DC offset 1,35V, frequency 67 kHz. If this signal is not sen continue to the troubleshooting diagram for : Nokia Corporation. Page 16 Issue 1 11/03...
**DC-level of RxI/RxQ in continuous mode will decrease slowly. The Spectrunanalyzer: Synthesiszer original level can be 4G VCO out trobleshooting restored by rewriting 3769.6 MHz gain set. –30dBm (* Check Helgo Figure 9: GSM900 receiver troubleshooting Nokia Corporation. Issue 1 11/03 Page 17...
+26dB) **DC-level of RxI/RxQ in continuous mode will decrease slowly. The Spectrunanalyzer: Synthesiszer original level can be 4G VCO out trobleshooting restored by rewriting 3769.6 MHz gain set. –30dBm (* Check Helgo Nokia Corporation. Page 18 Issue 1 11/03...
- Set Active unit to "Rx" (Default = "Rx") - Set Operation mode to "Continuous" (Default = "Burst") - Set Rx/Tx channel to 37 on GSM900 band or 700 on GSM1800 band (Defaults) Nokia Corporation. Issue 1 11/03 Page 19...
Perform following tests, if problems exist a troubleshooting diagram can be used as a guideline Maximum output signal level and linearity Measure other power levels and gain control linearity Check error vectror magnitude (EVM) In case of synthesizer or LO failure, please refer a synthesizer troubleshooting. Nokia Corporation. Page 22 Issue 1 11/03...
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Check other power levels and gain control linearity over range 21…-15 dBm RBW 3 MHz VBW 10 kHz 21.6 dBm 50 dB SWT 100 ms TRG 21 dBm 1 RM Center 1.9477 GHz 10 ms/ Date: 29.AUG.2003 09:43:21 Figure 13: Other power levels Nokia Corporation. Page 24 Issue 1 11/03...
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Date: 29.AUG.2003 09:33:17 Figure 15: Power sweeps Note! When perform txa2 power sweep, in manual mode control box , change TxA1 val- ues to TxA2 field and TxA2 values to TxA1 field, respectively. Nokia Corporation. Issue 1 11/03 Page 25...
File -> Open product -> NHM-1 From toolbar - Set system mode to “WCDMA” - Set operating mode to "Local" Activate RF controls window from the menu Testing -> WCDMA -> RX Control Nokia Corporation. Page 26 Issue 1 11/03...
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Measure the the test points for balanced RX I- and Q-signals with a oscilloscope. J800 : RX I –signal minus J801 : RX I –signal plus J802 : RX Q-signal plus J803 : RX Q-signal minus Nokia Corporation. Issue 1 11/03 Page 27...
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Signal amplitude should be near 500 mVpp and DC-offset ca. 0.7 V. The signal in test points J800 and J801 should have 180 degrees phase shift, because of balanced operation. Figure 18: J801 test point Nokia Corporation. Page 28 Issue 1 11/03...
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For troubleshooting, -Activate WCDMA RX control from Phoenix menu. Do following settings : - Channel 10700 , - AGC mode “Manual” - LNA State “MID” , - BB AGC “30dB” Activate by pressing “Update” Nokia Corporation. Issue 1 11/03 Page 29...
In this case HP10020A passive 20:1 ( 1kOhm) probe was used --> Check PWB connection This divider causes at least 26 dB from C830&C831 and level offset. C832&C833 to J800…J803 Figure 20: WCDMA RX troubleshooting Nokia Corporation. Page 30 Issue 1 11/03...
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Check again the tespoint J800, signal swing should be nearly ( ca. 10% less) the same as with original settings ( because this LNA gain step nominally is –13 dB from MID to LOW and BB AGC compensates by 12 dB ( =42-30 dB setting difference) the overall gain. Nokia Corporation. Issue 1 11/03 Page 31...
Initialize connection to phone. (use FBUS driver when using DAU9S and COMBOX driver when using FPS-8) Select product from the menu File -> Open product -> NHM-1 From toolbar - Set system mode to “WCDMA” - Set operating mode to "Local" Nokia Corporation. Page 32 Issue 1 11/03...
Select from list “Rx PLL lock self-test” and run it. If RX-synthesizer is able to lock, it will “PASS”. If it fails then activate Rx Control from Testing/WCDMA/-menu e.g with following set- tings: Nokia Corporation. Issue 1 11/03 Page 33...
If it fails then activate Tx Control from Testing/WCDMA/-menu e.g with following set- tings: Figure 24: WCDMA TX control NOTE: Connect a 50ohm/1W load to antenna connector ! Press “Send” to activate TX. Nokia Corporation. Page 36 Issue 1 11/03...
Phone is programming <150 mA jammed working OK? Flash fault Phone current ~150 mA Check BSI-line including Is phone in Change UEM X300,C308,R201 LOCAL mode ? and R213. Are they OK? Change defect part Nokia Corporation. Page 40 Issue 1 11/03...
LOW after it has been HIGH? Wrong Change Flash manufactor ID and device ID Is phone totally Phone is dead dead? Phone doesn't Phone is start up or it's jammed jammed? Nokia Corporation. Issue 1 11/03 Page 41...
Read phone info. Is it OK? Change UEM phone info read from testpoint J115. Is it OK? Measure FBUSTX-signal during phone info read from testpoint Change TIKU J116. Is it OK? Change UEM retest Nokia Corporation. Page 42 Issue 1 11/03...
Check R200. Is R200 with it OK ? empty battery. Is it ~800mA th ACP-1 charger? Change N200 Change defect (UEM). part. Recalibrate all Recalibrate AD converters. harge curreny Retest. d voltage. Retest. Retest Nokia Corporation. Issue 1 11/03 Page 43...
(X385,R385, C385). from X385. Is it ~3.0V? If still fail, change UEM. Check SIM lines (X385). If Check SIM power-up OK, change R385. If still fail, sequence. Is it OK? change UEM. Change TIKU Nokia Corporation. Page 44 Issue 1 11/03...
X166. Are voltage level ~1.8V? Change to normal mode. Measure SleepX-signal From testpoint J405 when key is pressed. Change Tiku Is voltage ~1.8 V When keypad pressed, are LED's turned Illumination fault Nokia Corporation. Page 46 Issue 1 11/03...
A0, D0-D7, RD, WR X100, X166 and And XRES signals lines again if OK Are voltage levels Change TIKU 1.8V Are the display Illumination fault LED´s working when key pressed or enabled by Phoenix Nokia Corporation. Issue 1 11/03 Page 47...
C169, C174, C175 and N200 VLED+ =~10.5V VLED- =~0.5V Wen LED driver is enabled. Is it OK? If not OK, change defect part. Check X166 (solder Change defect parts joints). Is it OK? Retest Nokia Corporation. Page 48 Issue 1 11/03...
Check ACI- line (R103, R207,C118). (pin3). Is it ~0V? If not OK, change defect part and retest. Measure VOUT Check VOUT line (R103, C313,N300) voltage (pin4). Is it ~0V? If not OK, check ACI-line again Retest Nokia Corporation. Issue 1 11/03 Page 49...
Is SOFTCON Vp 0V ? (J119) 1.8V ? Change TIKU Change Is Vpu (J120) N100 3.3 V ? Is D+ high on Check X102 R103 and X102 Change N100, if still fails change TIKU Nokia Corporation. Page 50 Issue 1 11/03...