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Motorola GmbH, CSS Center, Mobile Devices
Title:
Troubleshooting-Guide V3
Repair Support Information
Doc. No:
Version:
Date:
Page:
© Copyright 2003-2005 Motorola Inc. All Rights reserved.
Motorola internal use
TSG_V3
1.1
09.06.2005
1 / 11

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Summary of Contents for Motorola RAZR V3

  • Page 1 Doc. No: TSG_V3 Version: Date: 09.06.2005 Motorola GmbH, CSS Center, Mobile Devices Title: Troubleshooting-Guide V3 Page: 1 / 11 © Copyright 2003-2005 Motorola Inc. All Rights reserved. Repair Support Information Motorola internal use...
  • Page 2 Top 10 defective parts Most frequent failure codes and root causes Troubleshooting U700 Keyboard Flex Assy U900 U800 Display J 41 J-Keyboard Modified Date 9. June 2005 L. Heide © Copyright 2003-2005 Motorola Inc. All Rights reserved. Repair Support Information Motorola internal use...
  • Page 3 Page: 3 / 11 1.0 Preamble This document was created to assist analyzers when fixing problems on Motorola GSM Phones. All information was collected during the repair in the Repairentitlement Group Flensburg. © Copyright 2003-2005 Motorola Inc. All Rights reserved.
  • Page 4 - the soldering process of lead-free products always must be done with the aid of a bottom-heater and flux for lead-free soldering - always cover sensitive parts with shields © Copyright 2003-2005 Motorola Inc. All Rights reserved. Repair Support Information Motorola internal use...
  • Page 5 3.0 Top 10 Defects Fig. 1 shows a analysis-summary of the phones repaired in NPI- process related to the first repair works at all. Fig. 1 © Copyright 2003-2005 Motorola Inc. All Rights reserved. Repair Support Information Motorola internal use...
  • Page 6 Keyboard Flex Assy, J Keyboard U900 CPR - U50, U800 DIM - Display, Keyboard Flex Assy, J Keyboard DIS - Display ALT - U900 AUD - J41, U900 BAT - © Copyright 2003-2005 Motorola Inc. All Rights reserved. Repair Support Information Motorola internal use...
  • Page 7 U50. 3. Also check to the time mask with a GSM-Test-Set. If the signal does not conform to specifications, replace U50. © Copyright 2003-2005 Motorola Inc. All Rights reserved. Repair Support Information Motorola internal use...
  • Page 8 ~ 0.6 mA, measure following voltages: VBoost ~ 5.8V at C921 VBuck ~ 1.9V at L920 RF 5V REG ~ 5,0V at C933 Please refer to Fig. 2 © Copyright 2003-2005 Motorola Inc. All Rights reserved. Repair Support Information Motorola internal use...
  • Page 9 1. If all the voltages of PCAP 3 are present, the crystals (Y805 and Y900) begin to oscillate and the flash-part has previously been replaced, a defect U800 could cause the problem too. © Copyright 2003-2005 Motorola Inc. All Rights reserved. Repair Support Information Motorola internal use...
  • Page 10 PCAP (Fig. 3). If the bias voltage is present, measure using an oscilloscope measure at C1202-1 int-micp ~1V. While speaking into the microphone check for audio signals on your oscilloscope. mic-bias-voltage audio-waves Fig. 3 © Copyright 2003-2005 Motorola Inc. All Rights reserved. Repair Support Information Motorola internal use...
  • Page 11 Connector. Often the Connector is poorly soldered or has a dry joint. Sometimes J-Keyboard is broken (look with microscope). If the above mentioned does not apply, the fault is most probably PCB-related. © Copyright 2003-2005 Motorola Inc. All Rights reserved. Repair Support Information Motorola internal use...