Nokia Customer Care 6 - Baseband Description and Troubleshooting Issue 1 12/04 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
RAE-6/RA-4 6 - Baseband Description and Troubleshooting Nokia Customer Care [This page intentionally left blank] Issue 1 12/04 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
RAE-6/RA-4 6 - Baseband Description and Troubleshooting Nokia Customer Care Abbreviations ...................................................................................................... 7 Baseband Top-Level Description ...................................................................... 9 Operating conditions ........................................................................................ 10 Absolute maximum ratings .........................................................................
RAE-6/RA-4 Nokia Customer Care 6 - Baseband Description and Troubleshooting Display and keypad illumination....................................................................... 22 Power up and system states............................................................................ 22 Operating modes ........................................................................................... 23 Power up sequence .......................................................................................
RAE-6/RA-4 6 - Baseband Description and Troubleshooting Nokia Customer Care CMT troubleshooting........................................................................................ 59 EM troubleshooting (APE) ............................................................................... 60 Bluetooth troubleshooting ................................................................................ 61 Issue 1 12/04 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
RAE-6/RA-4 Nokia Customer Care 6 - Baseband Description and Troubleshooting [This page intentionally left blank] 6 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
RAE-6/RA-4 6 - Baseband Description and Troubleshooting Nokia Customer Care Abbreviations ACI Accessory Interface APE Application Processor Engine ASIC Application Specific Integrated Circuit ASIP Application Specific Integrated Passive BB Baseband BT Bluetooth (Low range radio link standard) CCS Customer Care Solution CMT Cellular Mobile Telephone COG Chip on Glass CSR Cambridge Silicon Radio DAC Digital to Analog Converter DC/DC Switched mode power supply DCT4.
RAE-6/RA-4 Nokia Customer Care 8 6 - Baseband Description and Troubleshooting LDO Low Drop Out LoSSI Low Speed Screen Interface MBUS Serial bus MCU MicroController Unit MMC Multi-Media Card MCBSP1 Multi-channel Buffer Serial Port NAND Flash memory cell type OMAP Open Multimedia Architecture Platform OSP Organic Solderable Preservative PA Power Amplifier PWB Printed Wiring Board (same than PCB) RF Radio Frequency RTC Real Time Clock SDRAM Synchronous Dynamic Random Access Memory
RAE-6/RA-4 6 - Baseband Description and Troubleshooting Nokia Customer Care Baseband Top-Level Description RAE-6/RA-4 HW architecture consists of: • Two colour displays • QWERTY keyboard • Cover keyboard • Engine PWB There are three PWBs: main engine board, QWERTY flex and UI flex. Both displays and the cover keyboard are connected to the engine via the UI flex. The QWERTY keyboard is connected to the engine through a QWERTY controller.
RAE-6/RA-4 Nokia Customer Care 6 - Baseband Description and Troubleshooting Figure 1:Simplified RAE-6/RA-4 block diagram VBAT UEMEK Enable BB Regulators APE REGULATORS Battery Hands-free In CODEC Bottom Connector Hands-free Out MIC ACI IHF SIM I/F SIM OUTL PA DAC OUTR CMT RF USB StUF (Stacked UPP + Flash OMAP1510 I2C McBSP1 ARM7 Camera GPIO I/F Lead3 LPRFUART ARM925T UART2 USB UART3 / PWT/PWL McBSP2 Flash 64Mb IrDA UART1 DSPSIO MCSI2 LEAD3ph3 Lid Flex uWire MCSI 1 ARMI O
RAE-6/RA-4 6 - Baseband Description and Troubleshooting Nokia Customer Care DC characteristics Table 2: Battery voltage range Signal Min Nom Max Note VBAT 3.1V 3.6V 4.2V (charging high limit voltage) 3.4V SW RF cut off Battery maximum voltage is specified when charging switch is disconnected after/between charging pulses. Temperature conditions Full functionality is achieved in the ambient temperature range -15 oC to +55 oC. Reduced functionality between -25 oC to -10 oC and +55 oC to +70 oC.
RAE-6/RA-4 Nokia Customer Care 6 - Baseband Description and Troubleshooting Functional Description of CMT The CMT architecture of RAE-6/RA-4 is based on DCT4 Common Baseband. The main functionality of the CMT baseband is implemented into two ASICs: UPP (Universal Phone Processor) and UEMEK (Universal Energy Management). 32Mbit NOR flash is used to store the program code. For a simplified block diagram of the RAE6/RA-4 CMT baseband, see Figure 2, “Simplified CMT baseband block diagram” on page 13.
RAE-6/RA-4 6 - Baseband Description and Troubleshooting Nokia Customer Care Figure 2:Simplified CMT baseband block diagram XABUS PUR delay + lvl shift PURX SleepClk 32kHz lvl shift SleepClk Prod/AS Test IF FBUS XBUS RFConv PWR on key MBUS CMT - APE interface RFIC Control 1.8V/3V RF Control RF-BB IF SIM RFConvIF Internal SIM IF StUF Audio IF Stacked UPP + Flash MBUS RFClk EAR UEMEK UEMK MIC 32kH z CHRG. IF FBUS DBUS CBUS CHRG current sense BATT.
RAE-6/RA-4 Nokia Customer Care 6 - Baseband Description and Troubleshooting Functional Description of APE APE term includes not only the processor itself but also the peripherals around it, clocking, resetting and power management for these parts. APE is based around OMAP1510 (Open Multimedia Application Platform) processor.
RAE-6/RA-4 6 - Baseband Description and Troubleshooting Nokia Customer Care The stereo output of this amplifier is designed for use with the extended Pop-portTM connector. It also has a differential mono output for driving the handsfree speaker. The battery voltage (VBAT) is used directly as a supply voltage for the audio amplifier. The type of DAC used is TLV320AIC23B and the supply voltage for this is coming from V28. ■ Audio control signals Audio DAC is controlled via I2C bus by OMAP1510.
RAE-6/RA-4 Nokia Customer Care 6 - Baseband Description and Troubleshooting APE audio This mode is entered when user starts the multimedia application (e.g. MP3, AAC etc.), which is played via IHF speaker or Pop-portTM accessories. Audio data from MMC is sent by OMAP1510 to the external audio DAC through the I2S connection. The DAC performs the digital to analog audio conversion. For playback via the internal speaker signal from DAC is routed to Phone_in_IHF input on LM4855 audio power amplifier.
RAE-6/RA-4 6 - Baseband Description and Troubleshooting Nokia Customer Care ARMIO ARMIO provides 5 ARM processor controllable GPIOs by default, and 5 more are available with different multiplexing scheme. ARMIOs also include a keyboard interface. The GPIOs consists programmable debouncing circuit but can be accessed directly only by the ARM processor. Both ARMIOs and keyboard interface signals can wake-up OMAP1510 from deep sleep and big sleep states.
RAE-6/RA-4 Nokia Customer Care 6 - Baseband Description and Troubleshooting Figure 4:Display interfaces OMAP1510 Uµ W w Ii rr e e DOUT Le ve l Shifte rs CMTDispla y Da ta DIN Cs0 CS CLK Cloc k RST Re se t L O S S i PDA Displa y Din Cs3 RST Vide o da ta Dout Clk CS Re se t Vide o da ta Keyboards Cover keyboard and command buttons The cover keyboard and the four command buttons are directly connected to the OMAP1510 keyboard matrix.
RAE-6/RA-4 6 - Baseband Description and Troubleshooting Nokia Customer Care Energy Management Energy Management covers both CMT and APE sides. Battery and charging functions are integrated into CMT Universal Energy Management (UEMEK) ASIC. UEMEK includes also all needed regulators for CMT BB and RF. APE side has its own discrete power supplies. Figure 5:Power distribution diagram Measurement resistor BATTERY RF PA Various LM3820 UEMEK 7 VR1..
RAE-6/RA-4 Nokia Customer Care 6 - Baseband Description and Troubleshooting ■ CMT EM UEMEK includes following blocks: • Baseband regulators (8 different LDOs) • RF regulators (6 different 2.78V LDOs, 4.75V LDO and two current regulators) • Power up/down logic (state machine). • Charger switch and control LM3820 (=Zocus-C) is the current measurement chip used for phone and charging current measurement. It can be used to estimate the battery charge level presented as battery bars on the display.
RAE-6/RA-4 6 - Baseband Description and Troubleshooting Nokia Customer Care ■ Battery 970 mAh Li-Po battery pack BP-6M is used in RAE-6/RA-4. Table 3: BP-6M characteristics Description Value Nominal discharge cut-off voltage 3.1V Nominal battery voltage 3.6V Nominal charging voltage 4.
RAE-6/RA-4 Nokia Customer Care 6 - Baseband Description and Troubleshooting Table 5: BSI Resistor Values Parameter Min Typ Max Unit Notes Battery size indicator resistor BSI 82 kOhm Battery size indicator for 970 mAh battery (BP-6M), Tolerance +/- 1% NTC thermistor BTEMP (inside phone) 47 kOhm Battery temperature indicator (NTC pulldown) 47kOhm +/- 5% @ 25C 4000 Ohm Beta value (B). Tolerance ”5%, 25C / 85C ■ Charging RAE-6/RA-4 supports all DCT4 chargers.
RAE-6/RA-4 6 - Baseband Description and Troubleshooting Nokia Customer Care Operating modes • NO_SUPPLY mode means that the main battery is not present or its voltage is too low (below UEMEK master reset threshold limit) and back-up battery voltage is too low. • In BACK_UP mode the main battery is disconnected or empty but back-up battery has sufficient charge in it • IN POWER_OFF mode the main battery is present and its voltage is over UEMEK master threshold limit. All regulators are disabled.
RAE-6/RA-4 Nokia Customer Care 6 - Baseband Description and Troubleshooting System Connector RAE-6/RA-4 supports usage of Pop-PortTM bottom connector. This means support for PopPortTM stereo and mono headsets with and without ACI, USB cable. Pop-Port consists of a charging plug socket and system connector. The Pop-Port is a featurebased interface. The accessory contains information about its features (ACI ASIC) and it is detected with a fully digital detection procedure.
RAE-6/RA-4 6 - Baseband Description and Troubleshooting Nokia Customer Care Figure 7:Pop-PortTM connections Pin # Signal Shielding GND HSEAR R P HSEAR R N HSEAR P XMIC P HSEAR N XMIC N DATA GND USB D- USB D+ Vout USB VBUS Charge GND ACI Charge Shielding GND PWB Note 1 VCHAR 2 GND Charge ground 3 ACI Insertion & removal detection /Serial data bi-directional 1 kbit/s 4 Vout 200mW 5 USB VBUS 6 USB D+/FBUS RX 7 USB D-/FBUS TX 8 USB data GND Data ground 9 XMIC N Negative
RAE-6/RA-4 Nokia Customer Care 6 - Baseband Description and Troubleshooting bus. A third function provided by ACI is to identify and authenticate a specific accessory which is connected to the system connector interface. All accessories cause headint interrupt when connected to or disconnected from the system connector. The insertion of an accessory generates a Headint interrupt by pulling the ACI line down. When no accessory is present, the UEMEK’s internal Headint pull-up resistor keeps the line high.
RAE-6/RA-4 6 - Baseband Description and Troubleshooting Nokia Customer Care After Sales Interface Test pads are placed on engine PWB on battery side for service flashing and testing purposes. Figure 8: Pin assignment in test pattern Issue 1 12/04 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
RAE-6/RA-4 Nokia Customer Care 6 - Baseband Description and Troubleshooting User Interface 1BD is the UI flex module of RAE-6 & RA-4 (US variant) communicators locating on the upper lid and connecting the following functional blocks to phone engine: • PDA display • CMT display • CMT keypad • Power key • Illumination • Earpiece In addition to the actual components to provide the needed functionality, there are some components to filter out possible EMI/ESD disturbance.
RAE-6/RA-4 6 - Baseband Description and Troubleshooting Nokia Customer Care ■ Component placement and FPWB outline of 1BD 1BD FPWB board size is 150x70mm. It has a double-layer structure. Hinge part is single layer. All the components are placed on one side of the 1BD FPWB. Figure 10, “Main components of 1BD” shows the main components and all the test points of the 1BD module.
RAE-6/RA-4 Nokia Customer Care 6 - Baseband Description and Troubleshooting ■ Hinge connector Hinge connector is a 61-pin board-to-board type connector with 0,5mm pitch, which connects flex module to the engine module. Table 8 shows all the signals through hinge area of the flex. Table 6: Signal description of the hinge flex connector X100 Pin Signal Pin Signal 1 GND (Ground) 32 VBAT (supply voltage) 2 GND (Ground) 33 APE_GPIO(13) RESET for PDA display 3 V18 (Supply voltage 1.
RAE-6/RA-4 6 - Baseband Description and Troubleshooting Nokia Customer Care 24 COL4 55 LCD(13) (Red2 RGB data for PDA display) 25 COL3 56 LCD(14) Red3 RGB data for PDA display) 26 COL2 57 LCD(15) (Red4 RGB data for PDA display) 27 COL1 58 LCD(5) (Green0 RGB data for PDA display) 28 KLIGHT (control signal for CMT LEDs) 59 GND (Ground) 29 DRVEN (LED driver enable) 60 GND (Ground) 30 DLIGHT (control signal for PDA display LEDs) 61 GND (Ground) 31 VBAT (supply voltage) ■ PDA disp
RAE-6/RA-4 Nokia Customer Care 6 - Baseband Description and Troubleshooting Table 7: Interface signals of PDA display. Pin # Signal name (LCD) Signal name (Engine) Voltage level I/O/Z Description 1 GND GND 0V - Ground 2 VLED+ Vovp (LED Driver) Variable ~12V - Voltage for LEDs 3 VLED1- Vfb1 (LED Driver) 12 / 1V - Return line for LEDs 1 4 VLED2- Vfb2 (LED Driver) 12 / 1V - Return line for LEDs 2 5 GND GND 0V - Ground 6 VDDI V28 2.
RAE-6/RA-4 6 - Baseband Description and Troubleshooting Signal name (LCD) Pin # Signal name (Engine) Voltage level Nokia Customer Care I/O/Z Description 26 R3 LCD_PXL 14 0 – 2.8V I Image data input red 27 R4 LCD_PXL 15 0 – 2.8V I Image data input red, MSB 28 GND GND 0V - Ground 29 G0 LCD_PXL 5 0 – 2.8V I Image data input green, LSB 30 G1 LCD_PXL 6 0 – 2.8V I Image data input green 31 G2 LCD_PXL 7 0 – 2.8V I Image data input green 32 G3 LCD_PXL 8 0 – 2.
RAE-6/RA-4 Nokia Customer Care 6 - Baseband Description and Troubleshooting The interconnection between the LCD module and engine is implemented with a 12-pin boardto-board connector. All the signals go through the hinge flex and are filtered by EMI filters. Table 8: interface signals of CMT display. Pin # Signal name (LCD) Signal name (Engine) Voltage level I/O/Z Description 1 VLED- Vfb (LED Driver) 12 / 0.4V - LED power supply (cathode) 2 VDDI V18 1.
RAE-6/RA-4 6 - Baseband Description and Troubleshooting Nokia Customer Care ■ CMT keypad The amount of keys in RAE-6/RA-4 on the lid side is 27. The keys are connected to the OMAP1510 keyboard interface, except the power key, which is connected to PWRONX pin of UEMEK. Keyboard interface in OMAP1510 has a 6x5 matrix. The total amount of the keypad signals through hinge flex is 12. Keyboard matrix can be seen in Table 9, “Keypad placement matrix.
RAE-6/RA-4 Nokia Customer Care 6 - Baseband Description and Troubleshooting • PDA display • CMT display • CMT keypad illumination ■ PDA keypad The keyboard matrix is a full QWERTY-keyboard, and consists of 66 keys + 9-way joystick. Space bar is built of 2 domes, so there are altogether 67 key domes in the matrix. Keyboard matrix is organized to 8 columns and 12 rows. Joystick is a 9-way joystick and consists eight directions (cardinal points & half-cardinal points) and push center direction to select.
RAE-6/RA-4 6 - Baseband Description and Troubleshooting Nokia Customer Care • S80L backlight • Keypad backlight • TK11851L: white LED driver for backlight • UEMEK PWM signals Dlight and Klight are to turn on/off white LED circuits Description of operation There are 6 white LEDs for illumination built in S80L module. There are two LED chains connected in parallel. Each of these chains consists of three LEDs in series. Common TK11851L driver is used for S80L display and for CMT display + keypad.
RAE-6/RA-4 Nokia Customer Care 6 - Baseband Description and Troubleshooting Baseband Troubleshooting This section is intended to be a guide for localizing and repairing electrical faults in RAE-6/RA4 baseband. Before any service operation you must be familiar with the RAE-6/RA-4 product and module level architecture. You have to be also familiar with the RAE-6/RA-4 specific service tools such as the Phoenix service software, flashing tools and software. 38 COMPANY CONFIDENTIAL Copyright © 2004 Nokia.
RAE-6/RA-4 6 - Baseband Description and Troubleshooting Nokia Customer Care ■ Top level flowchart Start Go to Phone is dead troubleshooting Phone is dead Yes Does pc recognize it when connected with USB? Yes Go to UI troubleshooting Go to EM troubleshooting Go to CMT troubleshooting No No Display is distorted/colors look strange Go to APE Clock and reset troubleshooting Yes Go to UI troubleshooting Yes Go to IR troubleshooting No IR doesn't work FT A DR No Bluetooth is not working Yes Go
RAE-6/RA-4 Nokia Customer Care 6 - Baseband Description and Troubleshooting Continued from page 1 Audios doesn't work Yes Go to audio trobleshooting Yes Go to MMC troubleshooting Yes Go to accessory troubleshooting Yes Go to Charging s troubleshooting Yes Go to Flashing troubleshooting No MMC doesn't work No Phone does not recognize Accessory No Charging doesn't work No Flashing doesn't work 40 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
RAE-6/RA-4 6 - Baseband Description and Troubleshooting Nokia Customer Care ■ Phone is dead troubleshooting Phone is in flash jig, powered from laboratory power Does it boot now? Yes Check Battery No Phone takes more than 600mA current when powered? Yes Short circuit somewhere, disassemble phone. Continue testing in module jig with engine PWB only. Does phone still take too much current? Yes Find the short circuit, change the component and test again.
RAE-6/RA-4 Nokia Customer Care 6 - Baseband Description and Troubleshooting ■ IR troubleshooting Phone is in flash jig, or powered from battery Try IR connection to pc Yes ok No Try again in module jig Yes Change IR window No IR module N4490 seems to be properly soldered? Yes Try to send a contact with phones IR Look with a camera phone viewfinder to phones IR window No I can see blinking light Reflash the phone 42 Inspect R4490, C4490 and C4492 One is pulsing, another is not Change IR
RAE-6/RA-4 6 - Baseband Description and Troubleshooting Nokia Customer Care ■ Illumination troubleshooting Are all LEDs dead? Power on Measure LED driver output from N101 pin 4. Is voltage between 10-12V? YES Measure voltage in N101 pin 8. Is it high (>1.5V) or is there PWM signal? NO NO Possible problem with connector or flex trace. Change flex. OK? NO YES YES Measure DLIGHT signal from N103 pin 2 with oscilloscope. Is it high or is there a PWM signal? Measure voltage in N101 pin 1.
RAE-6/RA-4 Nokia Customer Care 6 - Baseband Description and Troubleshooting ■ SIM troubleshooting SIM fault Check SIM connector X2700 solderings and SIM contacts. Problem fixed? No Measure VSIM with oscilloscope from X2700 pin 3. 1.8V and then 3.0V pulses lasting about 30ms should be seen right after power up without SIM. No Check capacitors C2700 and C2221 in VSIM line . OK? Yes No Change SIM asip R2700. Problem fixed? Yes No Yes Yes Fault is in nonreworkable component.
RAE-6/RA-4 6 - Baseband Description and Troubleshooting Nokia Customer Care ■ UI troubleshooting CMT display check No Display physically broken? Change LCD. LCD working? Yes Yes End No No Check connectors X100/X101. OK? No Yes Yes Change UI flex. Try with known good display. Working? Yes Change LCD No Fix connector. X100: Are VDD (pin4) and VDDI (pin 3) voltage levels ~2.8 and ~1.8V? No Check flex connector X4402 on engine PWB.
RAE-6/RA-4 Nokia Customer Care 6 - Baseband Description and Troubleshooting PDA LCD troubleshooting PDA display check No Display physically broken? Yes Change LCD. LCD working? End Yes No No Fix connector. Are VDDI/VDD (X100 pin 34 ~2.8V) and GND voltage levels ok? Check connectors X102/X100. OK? No No Check flex connector X4402 on engine PWB. OK? Yes Yes Go to EM trouble shooting No Yes Change UI module. Yes Yes Yes Fix connector.
RAE-6/RA-4 6 - Baseband Description and Troubleshooting Nokia Customer Care CBA keys troubleshooting Cover keys/ CBA keys are not working They seem to be mechanically ok? Yes Keys work with another UI module? Yes Replace flex No Is connector X4402 ok? Yes Change Z4400 and Z4401 No change See that R4424, 4425, R4427 are ok. Still dead OMAP FAULT? Fault is in nonreworkable component. Refer to current BER handling guidance. Issue 1 12/04 COMPANY CONFIDENTIAL Copyright © 2004 Nokia.
RAE-6/RA-4 Nokia Customer Care 6 - Baseband Description and Troubleshooting QWERTY troubleshooting Full keyboard is not working Check connector X4401. OK? No Is keyboard working? Fix connector. Yes No Try another full keyboard module. Keyboard working? No Yes Put original full keyboard module back. Yes Yes Measure voltage levels from I2C_sda (J4416), I2C_clk (J4415) and KB_irq (J4417) lines when keys are pressed. Voh ~ 2.8V and Vol ~ 0V. Voltages OK? No Check R4800.
RAE-6/RA-4 6 - Baseband Description and Troubleshooting Nokia Customer Care ■ Charging troubleshooting Charging fault Change defect part and retest. No Battery bars are scrolling? Yes Read BTEMP value with Phoenix. Is it close to ambient temperature (~25C)? No Re-calibrate ADC with Phoenix Energy Management tuning. Retest OK? No Check R2021, R2350, R2354 and C2351. All components OK? No Re-calibrate ADC, charge current and voltage with Phoenix Energy Management tuning.
RAE-6/RA-4 Nokia Customer Care 6 - Baseband Description and Troubleshooting ■ USB troubleshooting No USB connection Inspect Pop-port, L2002, R2003, R2004, C20052007, and N2001 visually Replace/re-solder broken connections/ components Damaged Undamaged At least 5V Check voltage from R2004 (USB enable) Measure voltage VBUS at C2006 when connected to pc with USB cable Not 2,8V Visit EM section Incorrect voltage No help Change L2002 Visit APE clock section No help 2,8V Check voltage from C2005
RAE-6/RA-4 6 - Baseband Description and Troubleshooting Nokia Customer Care ■ Accessory troubleshooting Accessory detection doesn't work Insert the known working accessoryt to the system connector . Does phone detect headset? NO Does HEADINT (R2001) toggle (high -> low) when accessory is connected? NO Check L2000, R2002, R2001 and C2003 and system connector X2021 YES YES Vout (system connector X2021, pin#4) ~2.8V, after an ACI accessory has been connected? NO END YES retest.
RAE-6/RA-4 Nokia Customer Care 6 - Baseband Description and Troubleshooting ■ MMC troubleshooting Start All measurements provide that the MMC is initializing or some operation is being tried to perform, since MMC power is cut after 5 seconds idle time. Save picture to known good MMC card Save and read succeed? Yes No MMC IF failure.
RAE-6/RA-4 6 - Baseband Description and Troubleshooting Nokia Customer Care ■ Audio troubleshooting Earpiece doesn't work Change upper lid module. Working? NO Change original upper lid module back. Set Phoenix Audio Routing from a known working MIC input MIC1 (HP, Int) or MIC2 (Ext. XMIC) to HP OUT. Ensure the correct MIC bias is on. Measure DC voltage between earpiece (B100) pads and GND. Is it ~1.4V? NO Check audio path from UEME to earpiece pads. Check L2100 and dual resistors R2100 and R2101.
RAE-6/RA-4 Nokia Customer Care 6 - Baseband Description and Troubleshooting Microphone doesn't work Check MIC module (B2100) and PWB contacts. Are they OK? NO Clean contacts/ replace MIC module (B2100). Retest. NO Check R2102, R2103, C2104 and C2105. Change components if needed. Retest. YES Set Phoenix Audio Routing from MIC1 (Hand portable) to known working audio output (EARP/ HP or Ext, XEAR) Ensure MIC Bias (MICB1) is set on. Is MIC Bias 2.1V present at R2102? No MIC Bias.
RAE-6/RA-4 6 - Baseband Description and Troubleshooting Nokia Customer Care ■ MDOC troubleshooting All signals in this troubleshooting are in range 0 - 2.8V Backup user data before MDOC troubleshooting, if possible Start Boot phone. Use oscilloscope. Measure MDOC Busy# at R4801 and RSTIN# at J4803 Busy# signal rises at latest after 1055us after RSTIN# rises. However, the Busy# can be high before RSTIN# rises, but this is not taken into account.
RAE-6/RA-4 Nokia Customer Care 6 - Baseband Description and Troubleshooting ■ SDRAM troubleshooting All signals in this troubleshooting are in range 0 - V18 Start Run ST_APE_RAM _TEST, with Phoenix.
RAE-6/RA-4 6 - Baseband Description and Troubleshooting Nokia Customer Care ■ Flash troubleshooting Flash programming fault Double check that you have correct SW. Does reflashing succeed? Yes OK No Check that flash adapter's pins are not Measure if BSI goes damaged and phone is low after flashing is properly attached to the started? adapter.
RAE-6/RA-4 Nokia Customer Care 6 - Baseband Description and Troubleshooting ■ APE clock and reset troubleshooting APE clocks and reset check Clk32k (R4810): Voh ~ 2.8V & f ~ 32.768kHz square wave ? No SleepClk (J2802): Voh ~ 1.8V & f ~ 32.768kHz square wave ? Yes 12Mhz clock (C4800, OSC1_IN): 12MHz signal present ? Yes Fault is in nonreworkable component. Refer to current BER handling guidance. (UEMEK D2200 problem). No No Check R4810.
RAE-6/RA-4 6 - Baseband Description and Troubleshooting Nokia Customer Care ■ CMT troubleshooting CMT Check Check that both ends of L2330L2335 have VBAT voltage Check L2330L2335. C2000C2002 and C2330C2335 Are they OK? No Replace defect components No Yes Check VBAT lines from battery connectorX2020 to L2330-L2335 Yes Chech BSI-line including X2020, C2015 and C2350. Are they OK? Replace defect components No Yes Measure voltages from following components: VANA C2216 2.78V VIO C2885 1.
RAE-6/RA-4 Nokia Customer Care 6 - Baseband Description and Troubleshooting ■ EM troubleshooting (APE) Phone is in module jig Check SYNC/ MODE from R4202(both sides), High? NO Faulty V4200, R4202, or N4201. If all these are connected, replace first V4200 and R4202, next N4201. If still doesn't help Fault is in non-reworkable component. Refer to current BER handling guidance. (OMAP D4800 problem) YES Check V15(1.
RAE-6/RA-4 6 - Baseband Description and Troubleshooting Nokia Customer Care ■ Bluetooth troubleshooting BT Check Connection to JBT9. OK? Yes BER <= 0.1% Check RF components (L6032, L6031, C6046 and C6049. No repeat BER test. OK? No No Check Vreg (2.8V) from capacitor C6036. Is it OK? Yes No Check regulator N4200 (EM troubleshooting) Yes BT OK Check balun T6030 and filter Z6030. Yes Yes Repeat BER test. OK? Yes Yes Check VDD_ANA (1.8V) from capacitor C6031.
RAE-6/RA-4 Nokia Customer Care 6 - Baseband Description and Troubleshooting [This page intentionally left blank] 62 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
