motorola V3x Debug Guide

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Troubleshooting Guide V3x – Level 3

This document was created to assist analyzers troubleshooting Motorola 3G Phones. All information was collected during the repair in the Repair Entitlement Group Flensburg.

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Contents

Requirements

- System Requirements

- Basic information on troubleshooting Motorola 3G Phones

- Advice on working with lead free soldering/ underfill

Top Ten defect parts Troubleshooting Guide

- ALTxx

- AUDxx

- BATxx

- CHGxx

- CPRxx

- DAPxx

- DIMxx

- DISxx

- FTRxx

- MKPxx

- OPRxx

- SIKxx

- SIMxx

- TONxx

Follow up faults caused by failed repair actions Flash procedures

- Software Update

- Recovering Flash memory in Forced Flash Mode

Document Revision History: Date Version Comment

01.06.2007 1,00 Initial release of document

29.06.2007 1,10 (1) replaced figure in BAT02 section with correct

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description of VRF_TX_2.775V

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Requirements

- System Requirements

- Power supplies, Oscilloscope, Spectrum Analyzer, Test Set

- preheater for lead free soldering/ soldering machine for BGA´s

- Microscope

- RepairStudio/Radiocomm,

- Field Service Bulletins

- Block diagrams/Schematics

- PinNetFinder FLVIEW

- Basic information on troubleshooting Motorola 3G Phones

- Make sure all contacts are clean, especially the EMU-Connector

- Use newest approved Software

- RESET/MASTERCLEAR can fix some issues

- Do a visual inspection on customer abuse/liquid contamination

- Advice on working with lead free soldering/ underfill

- Remove heat sensitive parts before soldering

- Work very carefully because of underfilled CPU(U1000) and Harmony (U100)

- Use protection shields / air-cooling equipment

- Useflux for lead free soldering

- Use preheater (HAKKO 853)

use of preheater, protection blocks and air-cooling equipment

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Top Ten defect parts

The following is an analysis summary of the V3x repaired during NPI process by the Repair Entitlement Group CSS Flensburg

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Troubleshooting Guide

First Step

Please make sure beforehand, that the problem at hand is not a SW related issue that can be solved with a 1FF update and a Master Reset/ Clear. In many cases a simple Master Reset can already fix the problem. The following section is meant to be a help in troubleshooting problems which are already identified as PCB related.

ALT01 Alert – Ring tone, no ALT02 Alert – Ring tone, low ALT03 Alert – Ring tone, noise/distortion

Check LOUD_SPK- (P1) and LOUD_SPK + (P2) – both should have around 2.5Vdc

-

if not check L6009/L6010 for broken connection, VS4200/VS4201/C4203/C4204/

C4212/C4213/C6026/C6027/C6028/C6031 for low resistance

- check ALRT_REF 2.5Vdc at C4210

- check PCB for open tracks from P1 to U3000-F1 / P2 to U3000-H1

- you can either use “Repair-Studio” to switch on 1kHz tone to the alert-speaker to check

for open tracks, but be careful: You can have 1kHz and audio in call at P1/P2, but no alert-tone, because the PCAP is defect!

- if 1kHz is ok, replace PCAP2 (U3000)

The alert signal is converted to analog and amplified by the PCAP2, but generated by the POG, so if the PCAP2 alert audio path is ok there could be a problem with the POG not generating the alert signals.

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ALT11 Alert – Vibrator, no ALT12 Alert – Vibrator, weak

Turn on vibrator using Repair Studio/Radiocomm. Measure V_VIB – should be about 1.3 Vdc. V_VIB is provided directly by the PCAP (U3000). To verify if the vibrator is defective a simple method is to provide a supply voltage (1Vdc should be enough) via test probes directly on the vibrator M3000 (radio in off state!). It should be rotating, if not replace the vibrator M3000. Otherwise replace PCAP (U3000).

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AUDxx Audio problems

First step on every audio related problem is to identify which audio paths are affected. If the audio signals in a loop are ok, there could be an audio problem in a network call. This could be due to a POG related defect.

AUDxx Audio – Headset Detection problem

If the headset detection is not working correctly, there is most likely a problem with the detection of any accessory connected to the EMU connector (J5501). With an open J5501 the voltage at pin 4 of J5501 (USB_ID) should be 2,775V when phone is powered on with battery. For headset detection USB_ID line is used. With headset connected voltage on that line should be 1,7V.

AUD01 Audio – Earpiece, No AUD02 Audio – Earpiece, Low

Check EAR_SPKR- at C5207 and EAR_SPKR+ at C5208. Both should have around 1.4Vdc offset voltage, if audio-loop is switched on and additional up to 3Vpp at 1kHz, if test-tone is switched on.

- if not check J5212 for solder shorts, C5207/5208 for low resistance

- (eventually) check PCB on open tracks from C5207 to C4001/U3000-J4 and C5208 to

C4000/U3000-K2

- if ok, replace PCAP2 (U3000)

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AUD05 Audio – Earpiece, Headset

First check the headset-detection. If ok set radio in headset audio loop (stereo) using Repair Studio/Radiocomm and generate tone (1kHz).

- check HS_SPKR_R at L6011 / HS_SPKR_L at L6012

if ok replace EMU-IC (U6003)

-

if not replace PCAP (U3000)

You cannot check audio signal directly at J5501, because in this case it is used for USBconnection!

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AUD07 Audio – Mic, No

AUD08 Audio – Mic, Low

Set radio in audio loop using Repair Studio/Radiocomm

- check Mic BIAS at R4100-2 – should be around 2Vdc

- if not check C4100 for low resistance

- check R4100 (4,7kOhm)

- if ok check AUX_MIC_OUT at C4105 while blowing into the microphone to see the

audio signal caused by the blowing

- if not replace microphone

- if ok replace PCAP2 (U3000)

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AUD11 Audio – Mic, Headset

Set radio in headset audio loop using Repair Studio/Radiocomm

- check headset Mic Bias at C7589 (EXT_MIC) – should be around 1.4Vdc

- if not check C4401/ C7589 for low resistance

- if C4401/ C7589 are ok, replace PCAP (U3000)

- if headset Mic BIAS ok:

- check C7588/ C5002 for low resistance and check R4401 /L4400

- if ok

replace EMU-IC (U6003)

BAT02 - Battery life short BAT03 – Battery can’t turn on phone BAT06 – Battery gets hot CHGxx - Charging problems TON01 – No Turn On (draws high current)

In probably most cases these problems are caused by an off current. First verify whether there is an off current. If there is an off current, it should be checked whether the device draws current via battery and/or via external connector.

In case of an off current via battery there should be a low resistance (less than ~200 Ohm)/ or a short from BATT_P (M5400-1) to GND.

To localize the defective part causing the short/ low resistance a simple way is to freeze the board with a ice-spray, supply a battery voltage from a power supply using micro clamp-type test probes, and see which parts are getting warm. This is a very basic and essential method to troubleshoot off current / high current consumption failures.

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The power supply (for BATT_P) should be set to 3.6V with current limitation to 2A. We strictly recommend using the Power Supply Unit Current Drain Meter to check the current drain of the PCB.

Shields covering suspected parts should be removed before freezing the PCB.

The PCB should be handled with care. After removing the shields the PCB should be given some time to cool down slowly before freezing it to far below zero to avoid physical stress to the multilayer PCB with lead free soldered parts.

In some cases the part, which is getting warm has an internal short itself. After removing this part the off current should be fixed. For verification check off current or measure resistance BATT_P (M5400-1) to GND. A new part can be placed.

If the short / low resistance remains after replacing the part which was getting warm, it should be checked which signals/ voltages this part provides. In the most cases this part will provide a supply voltage to other parts which can also get warm due to an internal short.

To find out the defective part an easy way is to use the Flensburg Layout Viewer to follow the signal (check for SHORT_RESISTORS after which the signals possibly could have a changed name), and to remove the parts one after another, until the short is gone.

Most frequent parts with internal shorts causing these kinds of failures are the PA´s (U400/U800), the Blue-Module (U900), the Harmony (U100), the Rattler (U200), and the PCAP (U3000).

1.Example:

- BAT00 – radio draws about 400 mA in standby, no off current

- Q3401/U3000 are getting warm

- Q3401 provides VRF_TX_2.775V for PA via short resistor R801 (using Flensburg

Layout Viewer )

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- GSM-PA U800 is also getting warm (see above)

- U800 itself has an internal short. Æ defective U800

2.Example:

- BAT02 – radio draws about 40 mA off current

- Only PCAP is getting warm (checked with ice-spray); nothing else

- PCAP draws off current -> replace PCAP

BAT04 – Invalid Battery

- verify EEPROM_ESD_PROT (M5400-2) while PCB is connected to EMU-USB

cable. It should be 2.775V.

- If it is low, check VS5004, R5401 (4k7) and R5402 (100 Ohm). If they are ok it

should be a problem with the POG U1000

CHG01 – Does not charge

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If the phone seems to charge, but battery meter stays at low level, check whether there is a high current consumption or an off current via battery. If so please follow troubleshooting as described in the BATxx section of this document. If there is no off current, check the whole path for the charging current. Make a battery/charger phasing to see, if only the charger current or also the battery-phasing is affected. For a charger current problem only:

- Check Q3960, Q3961, R3960

- If ok replace EMU-chip (U6003)

For additional battery phasing problems (for example: battery sense or battery meter) replace PCAP (U3000)

Battery Thermistor problem

Check BATT_THERM at M5400-3, it should be 2.7Vdc. If it is not check R4903, R4904, R4907, C4903 for tombstoned/misplaced parts and C4903 for low resistance.

, replace PCAP (U3000).

If ok

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CHG02 – No charging indication

If display indicates “Charging not possible” or the phone only powers on while plugging in the charger, but is not charging. Then check the USB_ID line at J5501 with phone powered on by battery. It should be 2.7Vdc (2.4Vdc is not enough ! )

- If not check VS5003. USB_ID voltage must be 2.7Vdc, if VS5003 is removed

- Check voltage at R7606-1 (2.7Vdc) and check U6012

- If ok replace U6003

CPR01 – Voice call - Can’t make CPR02 – Voice call - Can’t receive call CPR03 – Voice call – no service

First step in every Call related problem should be to figure out whether there is a receiving problem or a transmitting problem and which bands are affected.

Make sure, that the RF connector (N001) is cleaned (with cleaner or alcohol) before making a phasing/call-processing test or if the test fails!

No TX GSM900 (1800/1900)

Let radio transmit on GSM900 using Repair Studio/Radiocomm. Make sure to provide a battery voltage via micro clamp-type test probes to battery contacts M5400, because the main

power supply for the PA modules is taken only from the battery.

- Check GSM_TX at L213

- if ok in size and form (if unsure compare to good radio) check FL001

If the power is only a few dB below the min limit during TX phasing, the problem is a high signal loss caused by a defect FL001 or RF connector (N001). If the problem only exists on GSM900 band, it is most likely a defect FL001. If the high frequencies (1800/1900MHz) are faulty, it is a problem by a defect RF connector (N001). You can check the loss for DCS

1800 MHz without removing the PA shield, because PA output can be checked at FL004 (DCS_PCS_TX).

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- if TX at L213 is not ok check PA input (MB_LB_RF) at R802

- if MB_LB_EN is good, following signals should be present:

- VRF_PA_REF_2.775V at C806

- PA_BATT+ at C802

- LB_EN at C807 (pulsed 3V at 217Hz) – signal from Harmony

- GSM_PA_VBA (pulsed at 217 Hz) at R807 is proportional to the expected

amplification of the PA. Normal values are about 750mV at low power and 2,1V at max. power. With a defect PA it can grow up to 2,7V at low power!

- TX_EN_2V7 and 9E_MODE are two more signals coming from Harmony directly to

the PA that do not have test points.

If VRF_PA_REF_2.775V is missing or low, it’s probably not correctly generated by the PCAP or is being pulled down by a defective part which most probably will get warm – and can easily be found by a thermal troubleshooting as described in the BATxx section of this document. VRF_PA_REF_2.775V is the same as VRF_TX_2.775V and supplies both PAs U800 and U400, the Rattler IC U200 and the Harmony U100. If PA_BATT+ is missing check L800 and R3961. If LB_EN is missing it’s probably a defective Harmony.

- if MB_LB_RF is bad it’s probably a problem with the Blue Module U900 or with the

POG (Analyzer set to: SWEEP – 1s; SPAN – 1,4MHz)

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No TX WCDMA

Let radio transmit on WCDMA using Repair Studio/Radiocomm. Make sure to provide a battery voltage via micro clamp-type test probes to battery contacts M5400.

- Check WB_TX at C411 – if ok in size and form (if unsure compare to good radio)

check FL003, FL001

- Size and form of WCDMA TX signal: (Analyzer set to: SPAN – 10MHz)

- If not ok

check PA input at C221

- If PA input is good, check supply voltages VRF_PA_REF_2.775V at C402 and

PA_BATT+ at C400/C802, TX_WB_EN at C403 about 2.7Vdc (WCDMA TX Enable signal from Harmony). If all of these signals are present, WCDMA PA U400 is most properly defective.

- If PA input is bad, check the signals to U200: TX_EN (2.7Vdc from Harmony) at

TP205, SW_VCO_EN (2.7Vdc from Harmony) at TP210, REF (26 MHz clock from Blue Module) at R213. Also check the TX I and Q signals. If all of these are present, it is most likely a defective or badly soldered Rattler IC (U200).

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WCDMA TX I/Q signal

- If one of these signals (except 26 MHz REF) is missing, Harmony (U100) is most

properly defective.

No RX GSM900 (1800/1900)

Inject a RF from Test Set. Check ANT_SW_RX at antenna switch N001-1. Check for presence of MB_GSM at R914 (MB_DCS at R913 / MB_PCS atR912).

- If not ok

- If ok

replace FEM FL001

there is most likely a problem with the Blue Module U900 or the Harmony U100

No RX WCDMA

WCDMA RX is not passing FL001. If WCDMA RX fails, Blue Module (U900) or the Harmony (U100) could be the problem.

Note: For AFC phasing the receiver is used. So, if there is any RX fail, the AFC

phasing on that frequency band also fails. If the RX phasing is ok, but only AFC phasing fails, a bad crystal is the most likely cause.

- replace Y500

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DAP11 – Data Application – cannot upgrade software OPR03 – Operation – Error Message

Make sure, that you have adjusted 5Vdc on your power supply for the EMU-cable and the phone SW is not newer than the 1FF-file. Watch the display when entering the flash-mode. If an error message appears, do following action:

- for “critical error 01 13”: The POG (U1000) is defect.

- for “critical error 01 1B”: The POG (U1000) is defect

- for “critical error 10 39”: The RAM-downloader of 1FF-file does not match with

phone bootloader. Use the newest/ right 1FF-file

Otherwise go to the TONxx section in this document.

DIM01 – Display Main – no display DIM08 - Display Main – No backlight DIM09 – Display Main – Low/Dim backlight DIS01 – Display Secondary – no display DIS07 – Display Secondary – No backlight DIS08 – Display Secondary – Low/Dim backlight DAP10 – Data Application – poor picture quality

Make sure that the problem is not located in the Flip Assembly, by testing PCB with a good one and do an optical check of J5212. The following supply voltages for the Flip Assembly should be present:

- VCAM_2.6V at C5203

- V3_1.875V at C7591

- VMAIN_1.55V at C5204

- VAUX1_2.775V at C7590 (generated by Q3703)

- B+ at C5205/C5206

The voltages can be ok without a flip connected, but can break down, if a flip is plugged in, although the flip is ok! Additionally check the clock signal:

- PS_CLK_MM_C at C7608 (should be 13 MHz)

only present the first seconds after power on!

If ok check:

- Filters U5202/U5204/U6011 and Diode VS5201

- Filters FL5000/FL5001 (look especially for broken part!)

If ok, replace U5200 and U5201 (sometimes they are badly soldered only) You can check the function of these parts by using an Ohm Meter to check the resistance to GND for verification, which line is affected. By using the FLViewer it can be tracked which filters the signal passes until it reaches the POG. If all of these are ok, it should most likely be a problem with the POG.

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DIM01 – Display Main – No display MKP01 – Main Keypad – No Function/hangs TON01 – Turn on/off – No turn on Flip detect problem

Units with a flip detect problem will show following symptoms:

- no power on via battery

- no main display via EMU connector supply

- CLI display is not switching on open/close flip

- no keypad function

Check FLIP_DETECT_C at R5117 – should be 2.7Vdc (High), if it is low check

- R5117 itself

- Check Filter U5104 for broken part/solder short

- Replace Filter U5104

- Check FLIP_DETECT_C at R5117 again

- If FLIP_DETECT_C is 2.7Vdc (High) now, the Filter U5104 was defective

- If not, the POG is defect

FTR07 – Feature – MMS Video Clip

Capturing of video is possible, but no playback and saving is possible. Make sure that phone was reflashed with 1FF-file.

- Check for an error message

- If phone fails with “access device”, camera is ok and it is possible to view previously

taken pictures, this fault can be caused by a defective memory part. Multimedia data is stored in the DOC (disc on chip), which is one package with the SDRAM (U6004).

- Replace SDRAM/DOC (U6004)

- If not successful, POG (U1000) is defect

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MKP01 – Main Keypad – No function/hangs SIK01 – Side Keys – No function

Due to the keypad matrix architecture with 8 rows in 4 columns it is quite useful to verify which keys (if not all) are affected. By knowing which keys are not working, it is possible to find out which row or column is affected. You can either use an Ohm Meter to check the resistance to GND for verification, which line is affected. By using the FLViewer it can be tracked which filters the signal passes until it reaches the POG. In practice the defective part can very often be found by doing a visual inspection. Check:

- U5100

- U5101

- U5104 for solder shorts/broken part

If the keypad connector/Filters are ok it’s probably a problem with the POG.

MKP05 – Main Keypad – No/Dim backlight

First check keypad connector J5100! Turn on keypad backlight using Repair Studio/Radiocomm. Check VBOOST_5.5V at R6021-1.

- If not ok, only 4 – 5Vdc (same as B+) or high current with keypad connected,

check/replace L3100. If L3100 ok, replace PCAP (U3000).

- If VBOOST_5.5V is ok, check R6021/R7626 (5,5Vdc must be present at R7626-2

also)

- If ok, check KPD_LED_EL_EN1 (2,7Vdc) at R6023, KPD_LED_EL_EN2 (1,8Vdc)

at C7613 with backlight turned on.

- If not ok, remove U5104 and check again. If ok, place new Filter. If not, POG

(U1000) is defect.

SIM01 – SIM card – check card/insert SIM

Measurement on the SIM interface is a little bit difficult, as not all signals will be present until a SIM card and a battery are inserted. As far as I know there is still no SIM feature implementation in Repair Studio or Radiocomm. In the most cases it should be possible to figure out which part is defective by simply using the Ohm Meter to measure the following signals to GND:

- VSIM_CARD at J8005-2,J8005-3, C5503-2, C3850

If far less than 30 kOhm to GND, it could be a defective PCAP (U3000)

- USIM_CLK at J8005-5

- USIM_IO at J8005-7

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- USIM_RST at J8005-9, C3911-2

If any of these has far less than 30 kOhm to GND, it could be a defective POG (U1000). Before replacing the PCAP (U3000) or the POG (U1000) make sure that none of the associated capacitors have low resistance to GND. The VSIM_CARD can also be checked with the oscilloscope. First put the probe to the test point (C5503-2) and then switch on the phone (by switching the output of the power supply). After a few seconds the VSIM_CARD (2,7Vdc) should appear for about one second. The same can be done with VSIMC_EN at TP3002. It is the enable signal for VSIM_CARD. While it goes to high level (2,7Vdc)VSIM_CARD is switched on.

TON01 – No Turn On

Verify if radio doesn’t turn on (assembled with display). If it does, but doesn’t enumerate via EMU-Connector at RSD/Repair studio there should be a problem with the USB connection. In some cases a 1FF SW reflash in FORCED FLASH MODE (by connecting EMUConnector to radio while “*” and “#” are pressed) can fix this issue.

- If not, visually check EMU Connector for mechanical defects or contamination on

contacts, bad soldered pins or solder shorts

- Check the DP_RXD line at VS5003-3 (J5501-3) and DM_TXD line at VS5003-1

(J5501-2) with an ohm meter to GND to make sure, that there is no short to GND or an open track

- Check R3651, R3652, R7587, R7588 for high resistance

- If ok, replace EMU-chip (U6003)

- Check again

- If not ok, the POG (U1000) is defect

The USB interface is located in the POG, but the data bus is switched through by the EMUchip (U6003).

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If the radio doesn’t turn on, but draws high current (>500 mA)

- Please follow troubleshooting instructions as described in the BATxx section of this

document.

Note:

- Watchdog

In case the phone draws current but switches off after a few seconds, you can force the phone not to switch off, by setting the Watchdog R3250DNP. By placing a short resistor as R3250, or by just solder across the pads of R3250 the WATCHDOG signal will be pulled to HIGH (VLVIO_1.875V) and the PCAP will not switch off its power regulators. You will then be able to measure all the voltages or to do a thermal troubleshooting by using ice- spray.

- “power switch”

The second way to check the voltages is to use a switch in the plus line of your power supply. You can put the probe to the test points of each voltage and view the voltages appearing for a short time (half a second) during each switching action.

If radio draws no current at all (also not for a short time) it’s most likely a problem with the

32.768 KHz clock generated by Y3982

- replace Crystal Y3982

- if

unsuccessful, replace PCAP (U3000)

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Motorola GmbH, CSS Center, Mobile Devices

Date: 29.06.2007

Title: Troubleshooting-Guide V3x Level 3 Page: 23 / 26

If the current consumption is in normal range (40mA to 300mA)

- try doing a 1FF SW reflash in FORCED FLASH MODE. If radio enters the forced

flash mode or starts in flash mode by itself the main supply voltages for the logic section should be ok – Most likely the trouble can be found in the logic section (POG/Flash Memory/SDRAM Memory). For “critical error xx xx” go to the DAPxx section of this document.

- if unsuccessful, a flash log file generated by Repair Studio/RSD can be viewed. There

you will find the reason for the flash operation failure. However, this information can be ignored, as in almost every case the next step will be to send the PCB to a Level4

service-center, because POG (U1000) or Flash (U1300) is defect.

If the phone enters flash mode by itself as “S Blank Rainbow POG” at Repair-Studio/RSDlite,

the POG cannot recognize any flash:

send the PCB to a Level4 service-center, because POG (U1000) or Flash (U1300) is defect.

If the phone doesn’t enter flash mode, but draws current the following signals should be

checked:

- VPOG_LVIO_1.875V which becomes POG_LVIO after passing short R1010 /

VSDRAM_DOC_IO after passing Short R7617

- VLVIO_1.875V which is only used for FLASH / SDRAM and Harmony

- VMAIN_1.55V

- 32.768KHz clock at Y3982

If one of them is missing or low, check current consumption. If it is high something might be getting warm – follow the thermal troubleshooting routine as described in the BATxx section of this document. Otherwise replace PCAP (U3000). If voltages are ok, FLASH and POG already replaced and the USB-bus is checked, but phone appears as a “unknown device” for the computer, it is most likely a problem by the SDRAM/DOC (U6004).

Repair Support Information

Doc. No: tsg_3g_v3x_level3 Version: 1.1

Motorola GmbH, CSS Center, Mobile Devices

Date: 29.06.2007

Title: Troubleshooting-Guide V3x Level 3 Page: 24 / 26

TON01 – Turn on/off – No turn on TON06 – Turn on/off – No turn off MKP01 – Main Keypad – No function/hangs (On/Off switch) On/Off switch not working

Check U5104 for broken part/solder short and make a visual inspection of J8000. If it seems visually ok, there might be a defective part.

- Check voltage at ON_OFF_ENDB_C (J8000-11). It should have same level as B+ (for

example: 4Vdc)

- If not ok, check ON_OFF_ENDB at R7610-2 (same level as B+)

- If ok, replace U5104

ON_OFF_ENDB is not ok, check R7610 and C7614

- If

- If ok,

replace U5104

- If unsuccessful, replace PCAP (U3000)

TON03 – Turn on/off – auto power down in standby

If phone stores panic: DSM_MEASUREMENT_ERROR there is most properly a problem with the 32.768 KHz clock, which is needed for the whole radio when in deep sleep mode. Replace Y3982, test radio with a network SIM card and let radio enter deep sleep mode.

- if radio still powers down, replace PCAP (U3000)

Repair Support Information

Doc. No: tsg_3g_v3x_level3 Version: 1.1

Motorola GmbH, CSS Center, Mobile Devices

Date: 29.06.2007

Title: Troubleshooting-Guide V3x Level 3 Page: 25 / 26

TON03 – Turn on/off – auto power down in standby TON01 – Turn on/off – No turn on

If the phone attempts to start (you can sometimes see “Hellomoto” screen), but always powercycles instead of fully powering up, it is most likely a problem with the communication of the POG and the other components like Harmony (U100), Blue Module (U900) and GPU (inside the flip). In this case a reflash in forced flash mode is always possible, but would not solve the problem. The problem is to determine, which component fails.

- If the PCB standalone is working, but is powercycling with a flip connected, it is a

problem with the connection between POG and GPU. – follow troubleshooting as described in the DIMxx section of this document.

- If not, it is most likely a problem with the Harmony (U100), because the underfill

below U100 is very sensitive against temperatures above 180 degrees.

- If phone draws about 200mA for +/-10 seconds, reflash is possible, but the fault is the

same after that, the Harmony (U100) or Blue Module (U900) will be the problem.

Follow up faults caused by failed repair actions

Quite a lot of repairs which were sent to Level 4 service have a second fault, which is caused by an unsuccessful repair attempt. We strictly recommend to visually check the PCB for skewed or tombstoned parts, solder shorts or heat bubbles in PCB after every soldering action. Especially small parts which are located close to shields can easily be misplaced during removal or setting of the shields. We found that some parts seem to be more heat sensitive than others. We had some issues with defective RattlerICs (U200) after replacing the GSM PA (U800). In these cases there could be an off current or high standby current consumption and trouble with TX power in WCDMA.

The main problems on the V3x are surely the underfilled Harmony and POG. So it is very important to use the special cooling equipment for solder actions on the PCB!

Especially solder actions in the PA-section will cause problems with the underfill of POG (U1000) and Harmony (U100) with which the level 4 service then has to deal with! The replacement of the PCAP (U3000) requires air-cooling of the Harmony (U100)!

Flash procedures

Note: It is very important to do a restart after every flash process! Otherwise the phone will start in flash mode again.

Software update

Following steps are necessary to update the Software to latest approved Software:

- unlock phone (if subsidy locked)

- flash customer specific 1FF superfile (example: DC One File Flash:

R252211LD_U_85.92.70R_LP0039_DRM0003_VSTU_206_080C_JPGE_R25221VFSIRIUS_26_USRAZRV3XVFDE25221050_1 FF.shx

)

Repair Support Information

Doc. No: tsg_3g_v3x_level3 Version: 1.1

Motorola GmbH, CSS Center, Mobile Devices

Date: 29.06.2007

Title: Troubleshooting-Guide V3x Level 3 Page: 26 / 26

- after restart:

- take out of “In Factory” – if necessary

- do Master Reset/Master Clear

Recovering Flash Memory in Forced Flash Mode

If the phone doesn’t start because of corrupted software it might be possible to recover it:

- connect phone to EMU-cable while pressing “*” and “#”

The phone should start in flash mode now: S Flash Rainbow POG.

- flash 1FF superfile (example: DC One File Flash:

R252211LD_U_85.92.70R_LP0039_DRM0003_VSTU_206_080C_JPGE_R25221VFSIRIUS_26_USRAZRV3XVFDE25221050_1 FF.shx

)

- after restart:

- do Master Reset/Master Clear

If the phone doesn’t start in flash mode or as: S Blank Rainbow POG, there is a problem. Please follow troubleshooting instructions as described in the TON01 section of the Troubleshooting-Guide.

Repair Support Information

motorola V3x Debug Guide

Specifications and Main Features

Frequently Asked Questions

User Manual

TON01 – No Turn On