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Motorola T720 Instruction Manual

Tri-band digital wireless telephone
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Download this manual See also: Reference Manual, Instruction Manual
Level 3 Service Manual
Product Family B65
Tri-Band Digital Wireless Telephone
T720
GSM 850/1900 MHz & GPRS Technologie

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Summary of Contents for Motorola T720

  • Page 1 Level 3 Service Manual Product Family B65 Tri-Band Digital Wireless Telephone T720 GSM 850/1900 MHz & GPRS Technologie...

  • Page 3: Table Of Contents

    1 and 2 Table of Contents Level 3 Service Manual Table of Contents 6881040B60 Contents Introduction ................5 Product Identification .
  • Page 4 Table of Contents Product Family B65 August 01, 2002 6881040B60...

  • 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

    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

    Customer’s original unit 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 HTC 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 3 Service Manual Specifications Specifications General Function Specification Frequency Range GSM 880-915 MHz Tx (with EGSM) 925-960 MHz Rx Frequency Range DCS 1710-1785 MHz Tx 1805-1880 MHz Rx Channel Spacing 200 kHz Channels 174 EGSM, 374 DCS carriers with 8 channels per carrier Modulation GMSK at BT = 0.3 Transmitter Phase Accuracy...
  • Page 10 Specifications Product Family B65 Speech Coding Function Specification Bit Rate 13.0 kbps (FR) 12.2 kbps (EFR) 4.75 - 12.2 kbps (8 AMR TCH/FS modes) 5.6 kbps (HR) 4.75 - 7.95 kbps (6 AMR TCH/HS modes) Frame Duration 20 ms Block Length 260 bits Classes Class 1 bits = 182 bits;...

  • Page 11: Product Overview

    Level 3 Service Manual Product Overview Product Overview Motorola PF B65 telephones feature global system for mobile communications (GSM) air interface, general packet radio service (GPRS) transport technology, and wireless application protocol (WAP) Internet. The PF B65 incorporates a color user...
  • Page 12 Product Overview Product Family B65 • Supports SIM Toolkit (STK), Class 2 • Caller ID with link to phone book alerts • Dual tinted mirror film (TMF) displays with electroluminescent (EL) backlighting: internal 96 x 64 pixel; external 96 x 16 pixel.
  • Page 13 Level 3 Service Manual Product Overview PF B65 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 14 Product Overview Product Family B65 Other Features Detailed descriptions of these and the other PF B65 features can be found in the appropriate PF B65 telephone user guide listed in the “Related Publications” section toward the end of this manual. August 01, 2002 6881040B60...

  • Page 15: General Operation

    Level 3 Service Manual General Operation General Operation Controls, Indicators, and Input/Output (I/O) Connections The PF B65 telephone’s controls are located on the sides of the device and on the keypad (see Figure 1). Indicators, in the form of icons, are displayed on the LCD (see Figure 2).

  • Page 16: Service Indicator

    General Operation Product Family B65 Service Indicator The service indicator (status light) changes color to show the user the state of the phone as shown in Table 1, below. Table 1. Service Indicator States Indication State Alternating red / green Incoming call Flashing green In service, home system...
  • Page 17 Level 3 Service Manual General Operation Figure 2 shows common icons displayed on the LCD. • Signal Strength Indicator. Shows the strength of the phone’s connection with the network. Calls cannot be sent or received when the “no signal” indicator is displayed. •...

  • Page 18: User Interface Menu Structure

    General Operation Product Family B65 User Interface Menu Structure Figure 3 shows the PF B65 telephone menu structure. Main Menu Settings Menu • Other Settings • Personalize • Recent Calls • Call Forward • Main Menu • Voice Calls • Received Calls •...

  • Page 19: Battery Function

    Level 3 Service Manual General Operation Battery Function Battery Gauge The telephone displays a battery level indicator icon in the idle screen to indicate the battery charge level. The gauge shows four levels: 100%, 66%, 33%, and Low Battery. Battery Removal Removing the battery causes the device to immediately shut down and any pending work (for example, partially entered phone book entries or outgoing messages) is lost.
  • Page 20 General Operation Product Family B65 August 01, 2002 6881040B60...

  • Page 21: Tools And Test Equipment

    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 by fax (847) 576-3023.

  • Page 22: Disassembly

    Disassembly Product Family B65 Disassembly The procedures in this section provide instructions for the disassembly of a PF B65 telephone. Tools and equipment used for the phone are listed in Table 2, preceding. Many of the integrated devices used in this phone are vulnerable to damage from electrostatic discharge (ESD).
  • Page 23 Level 3 Service Manual Disassembly Lift the end of the battery and remove it completely (See Figure 5). BATTERY 020201o Figure 5. 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 24: Removing And Replacing The Subscriber Identity Module (Sim)

    Disassembly Product Family B65 Removing and Replacing the Subscriber Identity Module (SIM) Remove the battery housing and battery as described in the procedures. Slide the SIM lock away from the SIM card to unlock as shown in Figure 6. Carefully lift the SIM from its holder. SIM HOLDER LOCKED SIM HOLDER UNLOCKED 020202o...

  • Page 25: Removing And Replacing The Antenna

    Level 3 Service Manual Disassembly Removing and Replacing the Antenna Remove the battery housing and battery as described in the procedures. By hand, rotate the antenna counterclockwise until loose. See Figure 7. ANTENNA 020203o Figure 7. Removing the Antenna When the antenna threads are completely disengaged, pull the antenna straight out of the phone to remove.
  • Page 26 Disassembly Product Family B65 Using a Torx driver with a T-6 bit, remove the 4 screws from the rear housing assembly (See Figure 8). SCREWS SCREWS 020251o Figure 8. Removing the Rear Housing Assembly Screws Locate the 2 housing catches on the sides of the phone as shown in Figure 9. Using the pointed end of the disassembly tool, depress the housing catches to release the rear housing assembly from the front housing.
  • Page 27 Level 3 Service Manual Disassembly Rotate the rear housing assembly and pull it away from the front housing to remove. 020204o Figure 9. Removing the rear housing assembly To replace, carefully align rear housing assembly with the front housing, then press the rear assembly down until the 2 housing catches engage with the corresponding openings on the rear housing.

  • Page 28: Removing And Replacing The Transceiver Board Assembly

    Disassembly Product Family B65 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 housing, battery, antenna, and rear housing assembly as described in the procedures The flexible printed cable (FPC) (flex) is easily damaged.
  • Page 29 Level 3 Service Manual Disassembly Carefully work the flat end of the disassembly tool under the flex connector and disconnect it from the transceiver board (See Figure 11). DISSASSEMBLY TOOL FLEX 020205o Figure 11. Disconnecting the Flex From the Transceiver Board Using the disassembly tool, lift the transceiver board assembly from the front housing.

  • Page 30: Removing And Replacing The Keypad

    Disassembly Product Family B65 Removing and Replacing the Keypad Remove the battery housing, battery, antenna, rear housing assembly, and transceiver board assembly as described in the procedures. Lift the keypad from the front housing as shown in Figure 12. DISASSEMBLY TOOL KEYPAD 020207o Figure 12.

  • Page 31: Removing And Replacing The Flip Cover

    Level 3 Service Manual Disassembly Removing and Replacing the Flip Cover Remove the battery housing, battery, antenna, rear housing assembly, transceiver board assembly, and keypad as described in the procedures. Using the disassembly tool, lift the bottom end of the flip cover away from the flip assembly as shown in Figure 13.

  • Page 32: Removing The Led Light Guard

    Disassembly Product Family B65 Removing the LED Light Guard Using the pointed end of the disassembly tool, push the clear plastic LED light guard out of the front housing from the inside of the housing (See Figure 14). 020261o Figure 14. Removing the LED Light Guard To replace, insert the LED light guard into the front housing from the front of the housing assembly, with the curved side of the guard facing the inside of the phone.

  • Page 33: Removing And Replacing The Flip Assembly

    Level 3 Service Manual Disassembly Removing and Replacing the Flip Assembly Remove the battery housing, battery, antenna, rear housing assembly, metal sheath, transceiver board, keypad, and flip cover as described in the procedures. The flex is fragile and easily damaged. Be very careful when passing the flex through the front housing opening.
  • Page 34 Disassembly Product Family B65 To detach the flex connector, rotate the display module and carefully thread the flex connector through the opening in the base front housing (See Figure 16). 020259o Figure 16. Removing the Flex Connector To replace, thread the flex connector through the front housing opening at an angle.
  • Page 35 Level 3 Service Manual Disassembly Close the barrel of the flip on the side where the flex connector is located, leaving open the side where the hinge assembly will be inserted into the barrel (See Figure 17). HINGE ASSEMBLY 020262o Figure 17.

  • Page 36: Removing And Replacing The Display Module

    Disassembly Product Family B65 Removing and Replacing the Display Module Using a Torx driver with a T-6 bit, remove the 4 screws from the display module (See Figure 18). SCREWS SCREWS 020263 Figure 18. Removing the Display Module Lift the display module up and slide it out if its housing, being careful to not damage or stress the flex connector.

  • Page 37: 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 19.
  • Page 38 Subscriber Identity Module (SIM) and Identification Product Family B65 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. Figure 20 illustrates the various parts of this number. IMEI 16 Digits 6 Digits 2 Digits...

  • Page 39: Troubleshooting

    Troubleshooting Troubleshooting Manual Test Mode Motorola PF B65 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 40 Troubleshooting Product Family B65 Table 3. Manual Test Commands (Continued) Key Sequence Test Function/Name Remarks 5*0*8 Set audio level 8 5*0*9 Set audio level 9 5*0*10 Set audio level 10 5*0*11 Set audio level 11 5*0*12 Set audio level 12 5*0*13 Set audio level 13 5*0*14...

  • Page 41: Troubleshooting Chart

    Level 3 Service Manual Troubleshooting Troubleshooting Chart Table 4. PF B65 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 42 Troubleshooting Product Family B65 Table 4. PF B65 Telephone: Level 1 and 2 Troubleshooting Chart (Continued) Symptom Probable Cause Verification and Remedy 5. Telephone transmit audio is weak. a) Microphone connections to the Gain access to the microphone as described in the (usually indicated by called parties transceiver board assembly procedures.

  • Page 43: Programming: Software Upgrade And Flexing

    Contact your local technical support engineer for information about equipment and procedures for flashing and flexing.Part Number Charts The following charts are provided as a reference for the parts associated with PF B65 telephones. Related Publications Motorola T720 User Guide, English 6809441A06 6881040B60 August 01, 2002...
  • Page 44 Troubleshooting Product Family B65 Exploded View Diagram Figure 21. Exploded View August 01, 2002 6881040B60...

  • Page 45: Part Number Charts

    Level 3 Service Manual Troubleshooting Exploded View Parts List Table 5. Exploded View Parts List Item Motorola Part Item Motorola Part Description Description Number Number Number Number 1586639K01 Flip Cover with CLI 0304387F02 Screws, Base (4) 0304387F03 Screws, Transceiver (4)

  • Page 46: Exploded View Diagram

    Troubleshooting Product Family B65 Accessories Table 7. Accessories Part Description Part Number Battery, slim, 550 mAh SNN5582 Battery, high performance, 750 mAh SNN5588 Battery, extra capacity, 1100 mAh SNN5595 Mid-Rate travel charger SPN4992 Adapter, travel charger, Euro plug SPN4993 Adapter, travel charger, UK plug SPN4994 Adapter, travel charger, Brazilian plug SPN4741...

  • Page 48: Accessories

    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 and Starfish are registered trademarks of Starfish, Inc., a wholly owned independent subsidiary of Motorola, Inc.
  • Page 49 RX_EN J100 GSM_EXC_SW RVCO RF_V2 N_DCS_SW DCS_SW N_DCS_SEL N_GSM_EXC_SW U110 FL110 U140 FL130 LO_IN DCS_SEL IF_POSITIVE DCS_SEL U100 FL170 RX_GSM 400MHz RF_V2 DCS_TX U120 RX_DCS FL120 FL140 N_GSM_SEL IF_NEGATIVE RF_V2 GSM_TX N_DCS_SEL RF_V2 SWITCHED_VCC U170 FL160 IF_OUT RX_LO FEEDBACK VAPC U420 N_GSM_SEL U400...
  • Page 50 RF SCHEMATIC PAGE 2/2 RF_V2 RVCO RX_SERIAL_CLOCK RF_V2 U203 RX_SERIAL_FRAME_SYNC RX_SERIAL_DATA RX_ACQUIRE U202 RF_V1 SWITCHED_VCC RF_V1 13MHz_CLOCK_OUT IF_IN RF_V2 TX_CLOCK AOC_DRIVE CLK_SELECT TX_KEY_PAC POWER_DETECTOR_SWITCH TX_KEY U201 DM_CS MAGIC_SPI_CS N_DCS_SELECT N_GSM_SELECT MAGIC_SPI_CLK SATURATION_DETECT MAGIC_SPI_DATA TX_SERIAL_DATA_IN RF_V2 RF_V1 PRESCALER_IN HIGH_FREQUENCY_MODULATION RX_CHARGE_PUMP Q240 TX_CHARGE_PUMP MNCP_VCC VREF...
  • Page 51 AL SCHEMATIC - PAGE 1/2 EVDD IVDD QVCC CVDD HVDD AVDD JVDD VCCA DVDD BVDD RESET SR_VCC TP_MUX_CTL U2003 TP_FLASH_CS BRST_CLK OE_N MORT_FLASH_CS EB1_N OE_N ADV_N RW_N RESET_0 SR_CSN ECB_N CLK_SELECT STBY GCAP_32kHz_IN EB0_N GCAP_13MHz_CLOCK EB1_N MAGIC_13MHz U2000 WATCHDOG Flash RESET_0 RESET USB_VP...
  • Page 52 D4410 Q3700 ALRT_VCC Y3000 32,768kHz ALERT_VCC RTC_BATTERY DS4400 DS4401 DS4402 DS4403 USB_PWR SPKRM FL216 ALERT_OUT_POSITIVE USB+ ALERT_VCC DS4404 ALRTIN ALRTREF VSIM1 SPKR_OUT_MINUS SPKR_OUT_PLUS USB_VCCR MIDRATE_2 DS4406 DS4407 SPKROUT2 CE_AUDIO_OUT AL SCHEMATIC PAGE 2/2 V_BUCK AUDIO BIAS MODULE DS4409 U7003 V_BOOST VREF VCLK VSIM_EN...
  • Page 53 BOARD LAYOUT - PAGE 1/2...
  • Page 54 BOARD LAYOUT - PAGE 2/2...
  • Page 55 RF_V2 RX MID CHANNELS 850: CH190 -- 881,6 GSM: CH 62 -- 947,4 MHz N_GSM_EXC_SW DCS/PCS EGSM: CH 37 -- 942,4Mhz U201 DCS: CH 700 -- 1842,8MHz GSM_EXC_SW GSM/850 MAGIC 800MHz PCS: CH 661 -- 1960MHz U203 N_DCS_SW GSM/PCS LOCAL Osc.
  • Page 56 VSIM_EN1 U1000 MAGIC_SPI_CS MAGIC J4400 SIM_PD0 Flip PATRIOT MAGIC_SPI_CLK 2nd SIM MQSPI Flip Connector INTERF. MAGIC_SPI_DATA White D0-7 ADDRESS BUS Backl. Colour UCTS Display DATA BUS PRIM. 12-19 UDSR 120x160 UART UDCD U2000 RESET_O Pixel UDTR DISP_CS0 Boost SRAM UTXD2 SR_VCC A6,E1,D6 ECB_N...

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