Motorola A760 Service Manual
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Motorola A760 Service Manual

Motorola A760 Service Manual

Dual band wireless telephone
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M
Level 1 and 2 Service Manual
A760
Dual Band Wireless Telephone
GSM 900/1800 MHz & GPRS Technologies

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Summary of Contents for Motorola A760

  • Page 1 Level 1 and 2 Service Manual A760 Dual Band Wireless Telephone GSM 900/1800 MHz & GPRS Technologies...

  • Page 3: Table Of Contents

    Level 1 and 2 Service Manual Table of Contents A760 6809464A70 Introduction ................. 5 Product Identification .
  • Page 4 Table of Contents Product Family A760 August 26, 2003 6809464A70...

  • Page 5: Introduction

    Available on a contract basis, Motorola Inc. offers comprehensive maintenance and installation programs that enable customers to meet requirements for reliable, continuous communications. To learn more about the wide range of Motorola service programs, contact your local Motorola products representative or the nearest Customer Service Manager. Product Identification Motorola products are identified by the model number on the housing.

  • Page 6: Computer Program Copyrights

    Scope The scope of this document is to provide the basic information relating to A760 telephones, and also to provide procedures and processes for repairing the units at Level 1 and 2 service centers including: •...

  • Page 7: Warranty Service Policy

    Customer’s original units will be repaired but not refurbished as standard. Appointed Motorola Service Hubs will perform warranty and non-warranty field service for level 2 (assemblies) and level 3 (limited PCB component). The Motorola High Technology Centers will perform level 4 (full component) repairs.

  • Page 8: Parts Replacement

    When ordering crystals or channel elements, specify the Motorola part number, description, crystal frequency, and operating frequency desired. When the Motorola part number of a component is not known, use the product model number or other related major assembly along with a description of the related major assembly and of the component in question.

  • Page 9: Specifications

    Level 1 and 2 Service Manual Specifications Specifications General Function Specification 880-915 MHz Tx (with EGSM) Frequency Range GSM 925-960 MHZ Rx 1710-1785 MHz Tx Frequency Range DCS 1805-1880 MHz Rx Channel Spacing 200 kHz Channels 174 EGSM, 374 DCS carriers with 8 ch. per carrier Modulation GMSK at BT = 0.3 Transmitter Phase Accuracy...

  • Page 10: Product Overview

    (SIM) holder, and status light. A stylus, also located in the front housing, is provided to aid manipulating the touch screen UI. The A760 features a High definition display with a fine pitch 320 x 240 pixel high color reflective TFT display to improve readability and useability.

  • Page 11: Features

    Level 1 and 2 Service Manual Product Overview Features Features available include: • Phone first: looks and performs like a phone • Linux OS • J2ME™ MIDP 2.0 • Hands free speakerphone • 65k color TFT touchscreen • Touchscreen pen-based input with handwriting recognition •...

  • Page 12: General Operation

    General Operation Controls, Indicators, and Input/Output (I/O) Connections The A760 telephone’s controls are located on the front of the device (see Figure 1). Controls on the front of the phone include a Power ON/OFF button, Home Key, and a Up /Down key Soft Menu key on the left and right side. Indicators, in the form of icons, are displayed on the LCD.

  • Page 13: Color Display

    Level 1 and 2 Service Manual General Operation Color Display The color display provides a high resolution 240x320 touch screen display for easy readability in all light conditions (see Figure 2). The screen displays the main menu icons and all of the function group icons. You can navigate around the touch screen using the stylus to select the desired functions.
  • Page 14 General Operation A760 Table 1 shows some common icons displayed on the LCD. Table 1. Icon Indicators and Description Icon Description Signal Strength Indicator. Shows the strength of the phone’s connection with the network. GPRS Indicator. Appears when the phone is in GPRS mode.

  • Page 15: Menu Navigation

    Level 1 and 2 Service Manual General Operation Menu Navigation A760 telephones are equipped with a new user-friendly interface that employs 6 main menus. • Communication • Organize • Play • Tools • Extras • Personal Icons along the top row of the display provide quick access to selected applications.

  • Page 16: Alert Settings

    General Operation A760 Alert Settings A760 telephones include up to 32 preset alert tones and vibrations that can be applied to all alert events at the same time. ➧ Pressing either volume key will mute the alert. Battery Function Battery Gauge The telephone displays a battery level indicator icon in the idle screen to indicate the battery charge level.

  • Page 17: Tools And Test Equipment

    GSM / DCS Test SIM Card Used to enable manual test mode 1. To order in North America, contact Motorola Aftermarket and Accessories Division (AAD) at (847) 538-8000; Internationally, AAD can be reached by calling +1 847 5388023 or faxing +1 847 5763023.

  • Page 18: Disassembly

    A760 Disassembly The procedures in this section provide instructions for the disassembly of a A760 telephone. Tools and equipment used for the phone are listed in Table 2, preceding. Many of the integrated devices used in this equipment are vulnerable to damage from electrostatic discharge (ESD).

  • Page 19: Removing And Replacing The Battery

    Level 1 and 2 Service Manual Disassembly Removing and Replacing the Battery All batteries can cause property damage and/or bodily injury such as burns if a conductive material such as jewelry, keys, or beaded chains touch exposed terminals. The conductive material may complete an electrical circuit (short circuit) and become quite hot.

  • Page 20: Removing And Replacing The Subscriber Identity Module (Sim)

    Disassembly A760 Removing and Replacing the Subscriber Identity Module (SIM) Remove the battery door, and battery as described in the procedures. Slide the SIM in the direction of the arrow (see Figure 6) to remove the SIM. To replace, insert the SIM into the holder, ensuring the keyed corner of the SIM aligns with the notch molded into the holder.

  • Page 21: Removing And Replacing The Stylus

    Level 1 and 2 Service Manual Disassembly Removing and Replacing the Stylus Grasp the stylus and pull it straight out of the top of the telephone as shown in Figure 7. Stylus 031713o Figure 7. Removing the stylus To replace, insert the stylus, pointed end first, into the styles holder on the top of the telephone.

  • Page 22: Removing And Replacing The Antenna

    Disassembly A760 Removing and Replacing the Antenna Remove the battery door, and battery as described in the procedures. By hand, rotate the antenna counterclockwise until loose as shown in Figure 8-1. 031714o Figure 8. Removing the antenna When the antenna threads are completely disengaged, pull the antenna straight out of the phone housing to remove.

  • Page 23: Removing And Replacing The Rear Housing

    Level 1 and 2 Service Manual Disassembly Removing and Replacing the Rear Housing This product contains static-sensitive devices. Use anti-static handling procedures to prevent electrostatic discharge (ESD) and component damage. Remove the battery door, stylus, battery, SIM, and antenna as described in the procedures.
  • Page 24 Disassembly A760 Lift the rear housing away from the front housing as shown in Figure 10. Rear Housing 031819o Figure 10. Removing the Rear Housing To replace, align the housing catches then press the rear housing down until the 2 housing catches engage. Press the housings together until the catches snap into place.

  • Page 25: Removing And Replacing The Transceiver Board

    Level 1 and 2 Service Manual Disassembly Removing and Replacing the Transceiver Board This product contains static-sensitive devices. Use anti-static handling procedures to prevent electrostatic discharge (ESD) and component damage. Remove the battery door, battery, SIM, stylus, antenna, and rear housing as described in the procedures.

  • Page 26: Removing And Replacing The Camera Assembly

    Disassembly A760 Removing and Replacing the Camera Assembly Remove the battery door, battery, SIM, antenna, stylus, rear housing, and transceiver board as described in the procedures. The flexible printed cable (FPC or flex) is easily damaged. Exercise extreme care when handling.

  • Page 27: Removing And Replacing The Real Time Clock (Rtc) Battery

    Level 1 and 2 Service Manual Disassembly To replace, align the camera assembly to the transceiver PCB assembly. Place the camera assembly onto the transceiver PCB assembly. Use the metal tweezers to secure the camera latches on each side of the camera assembly.

  • Page 28: Removing And Replacing The Keypad

    Disassembly A760 Removing and Replacing the Keypad Remove the battery, SIM, antenna, rear housing, and main board as described in the procedures Lift the keypad from the front housing as shown in Figure 14. Front Housing Keypad Disassembly Tool 031736o Figure 14.

  • Page 29: Removing And Replacing The Touch Screen Display Assembly

    Level 1 and 2 Service Manual Disassembly Removing and Replacing the Touch Screen Display Assembly This product contains static-sensitive devices. Use anti-static handling procedures to prevent electrostatic discharge (ESD) and component damage. Remove the battery, SIM, antenna, rear housing, transceiver board, as described in the procedures Remove the switchdome PCB assembly as shown in Figure 15.
  • Page 30 Disassembly A760 Use the disassembly tool to unseat the display flex connector from its socket on the transceiver board (see Figure 16). Touch Display screen Touch Display flex Connector Touch Display flex Figure 16. Removing the Touch Screen Display Flex Carefully lift the touch screen display assembly straight up and away from the front housing as shown in Figure 15.
  • Page 31 Level 1 and 2 Service Manual Disassembly Touch Display screen Transceiver PC Board 031740o Figure 17. Removing the Touch Screen Display To replace, lower the touch screen display onto the transceiver board. Align the touch screen display flex connector with the flex connector socket and carefully press the flex connector into the socket.

  • Page 32: Removing And Replacing The Microphone

    Disassembly A760 Removing and Replacing the Microphone Remove the battery door, battery, SIM, antenna, rear housing, main board, and switchdome PCB as described in the procedures Microphone Microphone Boot Switchdome 031751o Figure 18. Removing the microphone Lift the microphone boot off of the microphone.

  • Page 33: Sim Cards And Identification

    The Mechanical Serial Number (MSN) is an individual unit identity number and remains with the unit throughout the life of the unit. The MSN can be used to log and track a unit on Motorola's Service Center Database. The MSN is divided into 4 sections as shown in Figure 19.
  • Page 34 SIM Cards and Identification A760 International Mobile Station Equipment Identity (IMEI) The International Mobile station Equipment Identity (IMEI) number is an individual number unique to the PCB and is stored within the unit's memory. The IMEI uniquely identifies an individual mobile station and thereby provides a means for controlling access to GSM networks based on mobile station types or individual units.

  • Page 35: Troubleshooting

    Troubleshooting Troubleshooting Manual Test Mode Motorola A760 telephones are equipped with a manual test mode capability. This allows service personnel to verify functionality and perform fault isolation by entering keypad commands. To enter the manual test command mode, a GSM/DCS test SIM must be used.

  • Page 36: Troubleshooting Chart

    Troubleshooting A760 Table 4. Test Commands (Continued) Test Command Test Function/Name Disable sidetone Show service indicator LED (0 - Off, 1 - Red, 2 - Green, 3 - Amber) (flip must be closed) Initialize non-volatile memory Display security code 58xxxxxx#...
  • Page 37 Level 1 and 2 Service Manual Troubleshooting Table 5. Product Family 0C45 Telephone: Level 1 and 2 Troubleshooting Chart (Continued) SYMPTOM PROBABLE CAUSE VERIFICATION AND REMEDY b) Touch screen display assembly Remove the touch screen display assembly as defective. described in the procedures. Temporarily reassemble unit with a known good touch screen display assembly and verify proper operation.
  • Page 38 Troubleshooting A760 Table 5. Product Family 0C45 Telephone: Level 1 and 2 Troubleshooting Chart (Continued) SYMPTOM PROBABLE CAUSE VERIFICATION AND REMEDY b) Connections between touch screen Refer to remedy 3a and 3b. If fault has not been display assembly and main board cleared, proceed to c.

  • Page 39: Programming: Software Upgrade And Flexing

    Part Number Charts The following charts are provided as a reference for the parts associated with A760 telephones. Related Publications Motorola A760 Wireless Phone User Guide, Simple Chinese 6809455A38 Motorola A760 Wireless Phone User Guide, Traditional Chinese 6809455A28 Motorola A760 Wireless Phone User Guide, English...

  • Page 40: Exploded View Diagram

    Troubleshooting A760 Exploded View Diagram 1 1 1 1 1 1 9 031655o Figure 20. Exploded view diagram August 26, 2003 6809464A70...

  • Page 41: Exploded View Parts List

    Level 1 and 2 Service Manual Troubleshooting Exploded View Parts List Table 6. Exploded View Parts List Item Motorola Description Number Part Number 0104076R01 Flip Assembly 5504865R01 Hinge Assembly w/teflon 0104075R01 Front Housing Assembly 0164092E01 Center Band Assembly 7287603N01 TFT Color Display Assembly...
  • Page 42 Troubleshooting A760 August 26, 2003 6809464A70...
  • Page 43 Level Service Manual microphone, removing and replacing 32 MSN 33 alert settings 16 antenna, removing and replacing 22 names product 5 battery function 16 gauge 16 removing 19, 21 overview 10 replacing 20 part numbers Canadian Interference-Causing Equipment regulations 5 accessories 41 changes parts 39...
  • Page 44 Product Family mechanical 33 service manual about 6 revisions 7 scope 6 service policy 7 customer support 8 out of box failure 7 product support 7 replacement parts 8 shut down upon battery removal 16 SIM card 33 personality transfer 33 removing 20 replacing 20 specifications 9...
  • Page 46 MOTOROLA, the Stylized M Logo, and all other trademarks indicated as such herein are trademarks of Motorola, Inc. ® Reg. U.S. Pat. & Tm. Off. TrueSync is a trademark of Starfish, Inc., a wholly owned independent subsidiary of Motorola, Inc.

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