Motorola A780 Service Manual
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Motorola A780 Service Manual

Motorola A780 Service Manual

Digital wireless telephone 850, 900, 1800, and 1900mhz
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Download this manual See also: Owner's Manual, User Manual
Level 1 and 2 Service Manual
A780
Digital Wireless Telephone
850, 900, 1800, and 1900MHz

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Summary of Contents for Motorola A780

  • Page 1 Level 1 and 2 Service Manual A780 Digital Wireless Telephone 850, 900, 1800, and 1900MHz...

  • Page 3: Table Of Contents

    1 and 2 Contents A780 Level 1 and 2 Service Manual Contents 6809488A90 Introduction ................. 3 Product Identification .
  • Page 4 Contents A780 August 25, 2004 6809488A90...

  • Page 5: Introduction

    Available on a contract basis, Motorola Inc. offers comprehensive maintenance and installation programs that allow 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 a label usually located under the battery.

  • Page 6: Computer Program Copyrights

    The Motorola products described in this manual may include Motorola computer programs stored in semiconductor memories or other media that are copyrighted with all rights reserved worldwide to Motorola. Laws in the United States and other countries preserve for Motorola, Inc. certain exclusive rights to the copyrighted...

  • Page 7: Warranty Service Policy

    When ordering replacement parts or equipment, include the Motorola part number and description used in the service manual. 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...
  • Page 8 Introduction A780 major assembly and of the component in question. In the U.S.A., to contact Motorola, Inc. on your TTY, call: 800-793-7834. Accessories and Aftermarket Division (AAD) Order replacement parts, test equipment, and manuals from AAD. U.S.A. Outside U.S.A. Phone: 800-422-4210...

  • Page 9: Specifications

    Level 1 and 2 Service Manual Specifications Specifications General Function Specification 824-848 MHz Tx Frequency Range GSM 850 869-893 MHz Rx 880-915 MHz Tx (with EGSM) Frequency Range GSM 900 925-960 MHZ Rx 1710-1785 MHz Tx Frequency Range DCS 1800 1805-1880 MHz Rx 1850-1910 MHz Tx Frequency Range PCS 1900...

  • Page 10: Product Overview

    (SMS) text messaging, and includes personal information manager (PIM) functionality. The A780 is a quad-band phone that allows roaming within the GSM 900 MHz, (DCS) 1800 MHz digital cellular system, the GSM 850 MHz, and PCS 1900 MHz bands.
  • Page 11 Because the GSM standard does not provide the option to store voice tags onto the SIM card, voice tags are added to the phone’s memory. A780 telephones also include a voice note recorder that allows up to 2 minutes of personal messages to be recorded. This feature has a complete set of record, playback, and management tools that make it easy to store and maintain a list of personal memos.
  • Page 12 User must subscribe to a caller line identification service through their service provider. Other Features Detailed descriptions of these and other A780 features can be found in the appropriate user’s guide listed in the “Related Publications” section toward the end of this manual.

  • Page 13: General Operation

    General Operation Controls, Indicators, and Input / Output (I/O) Connections The A780 telephone’s controls are located on the sides of the device and on the keypad. Indicators, in the form of icons, are displayed on the LCD (see Figure 2).
  • Page 14 Color Display The A780 wireless phones feature a 64k color Thin Film Transistor (TFT) 176x220 pixel display. Display animation makes the phone’s menus move smoothly as the user scrolls up and down Turn animation off to conserve the battery.

  • Page 15: Alert Settings

    Level 1 and 2 Service Manual General Operation Alert Settings A780 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.

  • Page 16: Tools And Test Equipment

    GSM / DCS Test SIM Used to enable manual test mode 1. To order in North America, contact Motorola Aftermarket and Accessories Division (AAD) at (800) 422-4210 or FAX (800) 622-6210; Internationally, AAD can be reached by calling (847) 538-8023 or faxing (847) 576-3023.

  • Page 17: Disassembly

    Disassembly Disassembly The procedures in this section provide instructions for the disassembly of A780 telephones. Tools and equipment used for the phone are listed in Table 1, preceding. Many of the integrated devices used in this equipment are vulnerable to damage from electrostatic discharge (ESD).
  • Page 18 Disassembly A780 Lift the top end of the battery and remove it completely. See Figure 2. Figure 2. Removing the battery There is a danger of explosion if the Lithium Ion battery is replaced incorrectly. Replace only with the same type of battery or equivalent as recommended by the battery manufacturer.

  • Page 19: Removing And Replacing The Subscriber Identity Module (Sim)

    Level 1 and 2 Service Manual Disassembly Removing and Replacing the Subscriber Identity Module (SIM) Remove the battery door and battery as described in the procedures. SIM Card Figure 3. Removing the SIM Carefully slide the SIM toward the bottom of the phone and lift it out. To replace, insert the SIM into the holder, ensuring the keyed corner of the SIM aligns with the notch molded into the holder.

  • Page 20: Removing And Replacing The Rear Housing

    Disassembly A780 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 cover battery and SIM card as described in the procedures. Slide the stylus from its holder. Use the metal tweezers to remove the rubber screw cover at the top right of the phone.
  • Page 21 Level 1 and 2 Service Manual Disassembly Carefully lift the rear housing away from the front housing and flip assembly. Housing Latch Figure 5. Removing the rear housing To replace, carefully align the rear housing to the front housing and the flip assembly, then press the rear chassis assembly down until the 2 housing catches engage with the corresponding openings on the rear chassis assembly.

  • Page 22: Removing And Replacing The Transceiver Board Assembly

    Disassembly A780 Removing and Replacing the Transceiver Board Assembly This product contains static-sensitive devices. Use anti-static handling procedures to prevent electrostatic discharge (ESD) and component damage. Remove the battery cover, battery, SIM card, stylus, and rear housing as described in the procedures The flexible printed cable (FPC) (flex) is easily damaged.
  • Page 23 Level 1 and 2 Service Manual Disassembly Lift the transceiver board assembly out of the front housing. See Figure 7. Figure 7. Removing the transceiver PC board assembly To replace, insert the transceiver board assembly into the front housing with the flex connector on top.

  • Page 24: Removing And Replacing The Lcd

    Disassembly A780 Removing and Replacing the LCD This product contains static-sensitive devices. Use anti-static handling procedures to prevent electrostatic discharge (ESD) and component damage. Remove the battery cover, battery, SIM card, stylus, rear housing and the transceiver board assembly as described in the procedures The flexible printed cable (FPC) (flex) is easily damaged.

  • Page 25: Removing And Replacing The Flip Assembly

    Level 1 and 2 Service Manual Disassembly Removing and Replacing the Flip Assembly Remove the battery cover, battery, SIM card, stylus, rear housing, and transceiver board assembly as described in the procedures. Insert the disassembly tool between the flip assembly and the flip knuckle. Carefully and gently bend the front housing knuckle away from the flip assembly hinge to separate the flip assembly from the front housing.
  • Page 26 Disassembly A780 Gently slide the other end of the flip hinge into position into the knuckle. Replace the transceiver board assembly, rear housing, stylus, SIM card, battery, and battery cover as described in the procedures. September 20, 2004 6809488A90...

  • Page 27: Removing And Replacing The Flip Lens

    Level 1 and 2 Service Manual Disassembly Removing and Replacing the Flip Lens Remove the battery cover, battery, SIM card, stylus, rear housing, and transceiver board assembly, and flip assembly as described in the procedures. Use the metal tweezers to remove the 2 rubber screw covers at the base of the flip.
  • Page 28 Disassembly A780 Replace the 2 screws and tighten to a final torque setting of 1.5 inch pounds. Do not over tighten. Replace 2 rubber screw covers. Replace the flip assembly, transceiver board assembly, rear housing, stylus, SIM card, battery, and battery cover as described in the procedures.

  • Page 29: Removing And Replacing The Flip Inner Cover

    Level 1 and 2 Service Manual Disassembly Removing and Replacing the Flip Inner Cover Remove the battery cover, battery, SIM card, stylus, rear housing, and transceiver board assembly, and flip assembly as described in the procedures. Use the metal tweezers to remove the 2 rubber screw covers at the base of the flip.

  • Page 30: Removing And Replacing The Keypad Pcb Assembly

    Disassembly A780 Removing and Replacing the Keypad PCB Assembly Remove the battery cover, battery, SIM card, stylus, rear housing, and transceiver board assembly, flip assembly, and flip inner cover as described in the procedures. Remove the 2 screws securing the keypad PCB assembly. Retain the screws for reassembly.

  • Page 31: Removing And Replacing The Stand_Joystick Assembly

    Level 1 and 2 Service Manual Disassembly Removing and Replacing the Stand_Joystick Assembly Remove the battery cover, battery, SIM card, stylus, rear housing and the transceiver board assembly as described in the procedures The flexible printed cable (FPC) (flex) is easily damaged. Exercise extreme care when handling.

  • Page 32: Removing And Replacing The Stand_Transflash Assembly

    Disassembly A780 Removing and Replacing the Stand_TransFlash Assembly Remove the battery cover, battery, SIM card, stylus rear housing, and transceiver board assembly as described in the procedures. Disengage the metal clip securing the Stand_TransFlash assembly to the transceiver board assembly.

  • Page 33: Removing And Replacing The Camera Assembly

    Level 1 and 2 Service Manual Disassembly Removing and Replacing the Camera Assembly Remove the battery cover, battery, SIM card, stylus, rear housing, and transceiver board assembly as described in the procedures. Use the disassembly tool to carefully pry the camera flex connector from its mating connector on the transceiver board (see Figure 15).

  • Page 34: Subscriber Identity Module (Sim) 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 16.
  • Page 35 Level 1 and 2 Service Manual Subscriber Identity Module (SIM) and Identification 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 36: Troubleshooting

    A780 Troubleshooting Manual Test Mode Motorola A780 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 37: Troubleshooting Chart

    Level 1 and 2 Service Manual Troubleshooting Troubleshooting Chart Table 3. A780 Telephone: Level 1 and 2 Troubleshooting Chart SYMPTOM PROBABLE CAUSE VERIFICATION AND REMEDY 1. Telephone will not turn on or stay on. a) Battery either discharged or Measure battery voltage across a 50 ohm (>1 defective.
  • Page 38 Troubleshooting A780 Table 3. A780 Telephone: Level 1 and 2 Troubleshooting Chart (Continued) SYMPTOM PROBABLE CAUSE VERIFICATION AND REMEDY 4. Incoming call alert transducer audio Faulty transceiver board assembly. Replace the transceiver board assembly (refer distorted or volume is too low.

  • Page 39: Programming: Software Upgrade And Flexing

    Level 1 and 2 Service Manual Troubleshooting Table 3. A780 Telephone: Level 1 and 2 Troubleshooting Chart (Continued) SYMPTOM PROBABLE CAUSE VERIFICATION AND REMEDY 10. Internal Charger not working. Faulty charger circuit on transceiver Test a selection of batteries in the rear pocket of board assembly.

  • Page 40: Part Numbers

    Part Numbers A780 Part Numbers The following information is provided as a reference for the parts associated with A780 telephones. Related Publications Motorola A780 User’s Guide, English 6809489A49-O September 20, 2004 6809488A90...

  • Page 41: Exploded View Diagram

    Level 1 and 2 Service Manual Part Numbers Exploded View Diagram 031826o Figure 17. Exploded View Diagram 6809488A90 September 20, 2004...

  • Page 42: Exploded View Parts List

    Part Numbers A780 Exploded View Parts List Table 4. Exploded View Parts List (A780) Item Item Part Number Description Part Number Description Number Number 1588187Z02 Battery Door 6188212Z01 CLI Lens 6188252Z01 Camera Lens 3888237Z02 Dial Keypad 3888188Z01 Tri-flash Cover 0788211Z01...

  • Page 43: Accessories

    Level 1 and 2 Service Manual Part Numbers Accessories Table 5. Accessories Part Description Part Number Headset, FM stereo radio xxxxxx Headset, with send/end button xxxxxx Headset, retractable xxxxxx Neckloop, hands-free (compatible with T-coil hearing aids) xxxxxx Holster 6809488A90 September 20, 2004...
  • Page 44 Part Numbers A780 September 20, 2004 6809488A90...
  • Page 45 1 and 2 Index Level 1 and 2 Service Manual A780 Index 6809488A90 international mobile station equipment identity 33 mechanical serial number 32 alert settings 13 product 3 IMEI 33 indicators battery battery level 12 function 13 Bluetooth 12 gauge 13...
  • Page 46 Index A780 battery 13, 15 battery housing 15 voice recognition 9 real-time clock battery 30, 31 rear housing 18 SIM 17 warranty service 5 transceiver board assembly 20, 22 wireless access protocol (WAP) 9 replacement parts contact information 5 replacing...
  • Page 48 MOTOROLA, the Stylized M Logo, and all other trademarks indicated as such herein are trademarks of Motorola, Inc. ® Reg. U.S. Pat. & Tm. Off. All other product or service names are the property of their respective owners. © 2004 Motorola, Inc.

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