Related Manuals for Nokia RH-42
Summary of Contents for Nokia RH-42
- Page 1 CCS Technical Documentation RH-42 Series Transceivers Troubleshooting Instructions Nokia Corporation Issue 2 09/2003 Confidential...
- Page 2 RH-42 Troubleshooting Instructions CCS Technical Documentation Nokia Corporation Page 2 Confidential Issue 2 09/2003...
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Page 3: Table Of Contents
RH-42 CCS Technical Documentation Troubleshooting Instructions Contents Page No Transceiver Troubleshooting ..................5 Baseband Troubleshooting ..................5 General testing......................5 Troubleshooting ......................5 Power up faults......................6 Flash Programming does not work................10 Charging ........................12 Audio failures......................13 Accessory detection....................16 Sleep Clock ...................... - Page 4 RH-42 Troubleshooting Instructions CCS Technical Documentation Nokia Corporation Page 4 Confidential Issue 2 09/2003...
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Page 5: Transceiver Troubleshooting
RH-42 CCS Technical Documentation Troubleshooting Instructions Transceiver Troubleshooting First, carry out a thorough visual check of the module. Make sure that: • there is no mechanical damage • the solder joints are OK Note: Before changing anything, ALL SUPPLY VOLTAGES AND THE SYSTEM CLOCK / SLEEP CLOCK should be checked. -
Page 6: Power Up Faults
RH-42 Troubleshooting Instructions CCS Technical Documentation The BB troubleshooting instructions consist of the following topics: 1 Power up 2 Flash programming 3 Audio • Earpiece • Microphone 4 Charging 5 Accessory detection 6 Sleep clock 7 User interface • Display •... - Page 7 RH-42 CCS Technical Documentation Troubleshooting Instructions • Reset releasing • The UPP releases the SLEEPX up to the "non sleep" -state to prevent the UEM switching the regulators "OFF" 2 MCU starts running the Bootsrap Code • Written in stone/ UPP internal ROM •...
- Page 8 RH-42 Troubleshooting Instructions CCS Technical Documentation 1 Power key pressed • After 20ms UEM enters RESET MODE if VBAT>Vmstr+ • VFLASH1, Vana, Vcore, Vio and VR3 goes high. • VCTCXO enabled by VR3 -> RFClk 19.44 MHz running. 2 Purx released •...
- Page 9 RH-42 CCS Technical Documentation Troubleshooting Instructions Try to start phone to Check the power key test or local mode FAIL Measure Vflash1, Check R202, R206, Vana, Vio, Vcore, VR3 R207, C220, C240 when pwr key pressed VANA and VR3 missing...
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Page 10: Flash Programming Does Not Work
RH-42 Troubleshooting Instructions CCS Technical Documentation Flash Programming does not work Flash programming procedure 1 The phone communicates with the prommer via the production test pattern, using the following signals: • FBUSTX(serial data to phone) • FBUSRX(serial data from phone) •... - Page 11 RH-42 CCS Technical Documentation Troubleshooting Instructions 11 The FLASH Program includes a package of MCU and DSP software and all default parameters for the phone. The tuning values will be added/rewritten during the Flash/Alignment phase. Flash programming error codes The various error codes can be seen from the FPS-8 Flash in Phoenix.
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Page 12: Charging
RH-42 Troubleshooting Instructions CCS Technical Documentation C383 "The Prommer has not received Phone Flash C583 acknowledge to the message." C683 (C383-during algorithm download to target Signals between UPP-Flash phone) (C583-during erasing) (C683-during programming) C384 "The Phone has generated NAK signal during... -
Page 13: Audio Failures
RH-42 CCS Technical Documentation Troubleshooting Instructions Phone doesn't start charging Connect charger and Check F100, L100, Fail check VCHARIN V100, and C106 Check ICHAR Check bottom Fail connector -VIN Check R202, R206, _Charge control pin R207, C201, C202, C220, C240, and... - Page 14 RH-42 Troubleshooting Instructions CCS Technical Documentation (Audio test/Hp In Ext Out) must be switched on by the Phoenix service software. This loop will connect audios only through the UEM. In this case, the UPP is not used. 3 Run the audio-loop self-test with Phoenix (BB Self Tests/ ST_EAR_DATA_LOOP_TEST).
- Page 15 RH-42 CCS Technical Documentation Troubleshooting Instructions Microphone or XEAR line does not work Mic rophone does n't work F eed 1K Hz to MIC by R un audio loop s elf- J B A -8 and meas ure F ail...
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Page 16: Accessory Detection
RH-42 Troubleshooting Instructions CCS Technical Documentation Accessory detection 1 Start the phone in the normal mode when checking for accessory detection. 2 The Ad- converter value of the hookint-line can be checked with the Xmic- switch on an MJS-18 test jig. Changes normally from high to low when no acces- sory is connected. -
Page 17: Sleep Clock
RH-42 CCS Technical Documentation Troubleshooting Instructions Sleep Clock Missing/nonfunctional sleep clock causes • Entering sleep mode fails (higher current consumption -> shorter standby time). • Baseband self tests cannot be run. • Phone clock (on display) does not function properly. -
Page 18: Display/Keyboard Lights Do Not Work
RH-42 Troubleshooting Instructions CCS Technical Documentation Display/Keyboard lights do not work Dis play/K eyboard lights are not working C hec k R 300 (Dis play) and R 301 R eplac e res is tor(s ) F ail (K eyboard) C hec k L E Ds V 300...V 303 (Dis play) -
Page 19: Display Does Not Work
RH-42 CCS Technical Documentation Troubleshooting Instructions Display does not work Dis play does not work C hec k that phone powers up normally P roc eed to P hone (c urrent Does n't P ower Up F ail c ons umption, power... -
Page 20: Buzzer Does Not Work
RH-42 Troubleshooting Instructions CCS Technical Documentation Buzzer does not work Check spring connectors and C306. • No sound: Try using a known good buzzer instead. If there is still no sound, change the UEM (D200) • Weak sound: Use the Audio test in Phoenix to set the buzzer parameters (frequency, strength). -
Page 21: Fault-Finding Charts For Receiver Chain
RH-42 CCS Technical Documentation Troubleshooting Instructions Fault-finding charts for receiver chain AMPS Apply 881.49MHz = ch 383 -116dBm, 8kHz dev, 1 kHz sine to external RF connector X900 Connect HS to cellular tester. Open AF: 1kHz AMPS RX chain OK sine meas SINAD AF:>12 dB... - Page 22 RH-42 Troubleshooting Instructions CCS Technical Documentation Note! Check all soldering and Check input level at Change EXT RF components in diplexer (Z907) input connector antenna circuit before changing. Note! Check all soldering and Check input level at Change diplexer discrete...
- Page 23 RH-42 CCS Technical Documentation Troubleshooting Instructions Check RF level at RX Check RF level at Start synthesizer IF filter input at J751 and J752 at troubleshooting 135.54MHz (Z830) 2034.06MHz Note! Check all discrete Change Taco (N801) components and voltages around Taco.
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Page 24: Transmitter Troubleshooting
RH-42 Troubleshooting Instructions CCS Technical Documentation TDMA800 Since the same physical signal path is used for both analog and digital modes at the lower band, there is no need for additional troubleshooting in the digital mode. So if the digital mode at the lower band is not working properly, start the analog mode trouble- shooting. - Page 25 RH-42 CCS Technical Documentation Troubleshooting Instructions AMPS, PL2, CH383 Visual check of TX -TX SAW -Duplex filter -Passive components Start synthesizer troubleshooting Check supply voltage -VR2 Check UEM and UPP -VBATTRF (baseband) -VR5 -IPA1 Check TXi/q signals Check UEM test points J901...J904...
- Page 26 RH-42 Troubleshooting Instructions CCS Technical Documentation Check TX SAW input Change TX SAW filter and output power (Z905) or (T961) IL:-3dB Is ltot 700...900 mA? Check PA output power and gain. Change PA (N901) Output power: ~28dBm Gain: ~30dB Check PWRDET...
- Page 27 RH-42 CCS Technical Documentation Troubleshooting Instructions TDMA800 The transmitter chain is exactly the same as the AMPS mode, except for the IPA current. Power control loop Basically, the power detection is done with the Power detector module and power con- trol is done inside the Taco.
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Page 28: Synthesizer Troubleshooting
RH-42 Troubleshooting Instructions CCS Technical Documentation Note: TXPWRDET is the difference between TX on burst and off burst. 2500 2000 1500 A800 D800 1000 Power Level Figure 13: Detected voltage limits Synthesizer Troubleshooting There are four oscillators generating the needed frequencies for RF section: 19.44 MHz... -
Page 29: Rx Vhf
RH-42 CCS Technical Documentation Troubleshooting Instructions START HERE! 2. Change VCTCXO Is VCTCXO oscillating? 19.44MHz 2. No 1. No 1. Check voltage at C792 2.78V Check resistor R792 Figure 14: Fault tree: 19.44 MHz oscillator RX VHF The RX VHF signal is used to generate receiver Intermediate frequency. RX VHF has one fixed frequency 271.08 MHz. -
Page 30: Fault-Finding Chart For Rx Vhf Vco
RH-42 Troubleshooting Instructions CCS Technical Documentation Fault-finding chart for RX VHF VCO 1. START HERE 3. Replace Taco Is frequency locked to 271.08MHz? 2. No 1. No 2. Check resonator components: L730, C740, C741, R741 RX VHF Figure 15: Fault tree: TX VHF The TX VHF signal is used to generate transmitter Intermediate frequency. -
Page 31: Uhf Synthesizer
RH-42 CCS Technical Documentation Troubleshooting Instructions UHF Synthesizer The UHF VCO signal is used for RF channel selection. This signal is fed as a local signal for 1st mixer of RX path and for upconverter of TX path. When operating on lower band the VCO signal is divided by 2 before feeding. - Page 32 RH-42 Troubleshooting Instructions CCS Technical Documentation Nokia Corporation Page 32 Confidential Issue 2 09/2003...