Sharp GX25 Service Manual

CONFIDENTIAL

SERVICE MANUAL

No. SX429TQG250/B

DIGITAL MOBILE PHONE

GX25

MODEL

INTERNAL

MODEL

NAME TQG250AB A Australia TQG250LB L Malta TQG250BB B Hungary TQG251PB PP Portugal (Prepaid) TQG250CB C Switzerland TQG250QB Q Egypt TQG250DB D Greece TQG250RB R Ireland TQG250EB E U.K. TQG250SB S Spain TQG251EB EP U.K. (Prepaid) TQG250TB T Italy TQG250GB G Germany TQG250VB V Slovenia TQG251GB GP Germany (Prepaid) TQG250WB W Sweden TQG250HB H Netherlands TQG250ZB Z New Zealand

SELEC-

TION

CODE

DESTINATION INTERNAL

MODEL

NAME

• In the interests of user-safety the set should be restored to its original condition and only parts identical to those specified should be used.

Caution

•

Risk of explosion if battery is replaced by an incorrect type, dispose of used batteries according to the instruction.

GX25

SELEC-

TION

CODE

DESTINATION

CONTENTS

SERVICING CONCERNS

CHAPTER 1. GENERAL DESCRIPTION

[1] Specifications ................................................. 1-1

[2] Names of parts............................................... 1-2

[3] Quick Start Guide........................................... 1-3

[4] Optional Accessories ..................................... 1-5

CHAPTER 2. ADJUSTMENTS, PERFORMANCE CHECK, AND FIRMWARE UPGRADE

[1] SHARP Programme Support Tool (SPST)

[2] Test points.................................................... 2-40

[3] Troubleshooting ........................................... 2-43

CHAPTER 3. DISASSEMBLY AND REASSEMBLY

[1] Servicing Concerns ........................................ 3-1

[2] Disassembly and reassembly ........................ 3-4

Parts marked with " " are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the safety and performance of the set.

........ 2-1

SHARP CORPORATION

CHAPTER 4. DIAGRAMS

[1] Block diagram................................................ 4-1

CHAPTER 5. SCHEMATIC DIAGRAM AND WIRING SIDE OF P.W.BOARD

[1] Notes on schematic diagram.........................5-1

[2] Types of transistor and LED .......................... 5-1

[3] Waveforms of circuit ......................................5-2

[4] Schematic diagram/

Wiring side of P.W.Board ............................. 5-4

CHAPTER 6. OTHERS

[1] Function table of IC .......................................6-1

[2] Function table of Display .............................6-26

Parts Guide

This document has been published to be used for after sales service only. The contents are subject to change without notice.

GX25

PhoneGX25Service ManualService ManualMarketE

SERVICING CONCERNS

1. When requested, back up user’s handset data using SPST (SHARP Programme Support Tool). Otherwise, before servicing, warn the user that data in the memory may be lost during repairs.

2. Upgrade the firmware to the latest version using SPST before returning the handset to the customer.

3. After repairs, inspect the handset (phone) according to the following flowchart.

Repairs are completed. (Fixed parts have been checked for proper operation.)

Check IMEI NO./Operator code (Destination)/ Firmware version by Identity function of SPST.

Inspect each device using performance check adjustment function of SPST.

Carry out RF performance check with SPST.

All completed.

4. When storing or transporting a PWB, put it into a conductive bag or wrap it in aluminum foil. (C-MOS IC may be damaged by electrostatic charges.)

5. Do not leave fingerprints, etc. on ornamental parts including a cabinet, especially clear windows for main and external displays. Wear fingerstalls to avoid this. Also, ensure not to leave fingerprints on the surface of main and external display panels.

6. To prevent oxidation which causes connection problems, do not touch any terminals on the electric board, microphone, vibrator, earpiece and speaker. When handling these parts, wear fingerstalls. Should you touch these parts, clean them with a soft dry cloth. Always wear fingerstalls when handling a shield case on the electric board. Otherwise oxidation may occur causing handset performance deterioration.

7. The FPC is a precision device. Handle it carefully to prevent any damages.

8. Do not expose the moisture sensor to liquids. If the sheet gets wet, red ink runs. In this case, replace the sheet with a new one. Be careful about your perspiration.

9. Before you disassemble or reassemble handset, make sure to remove the Li-Ion battery.

10.Be sufficiently careful with static electricity of integrated circuits and other circuits. Wear static electricity prevention bands whilst servicing.

CONFIDENTIAL

PRECAUTIONS FOR USING LEAD-FREE SOLDER

Employing lead-free solder

This model employs lead-free solder. This is indicated by the “LF” symbol printed on the PWB and in the service manual. The suffix letter indicates the alloy type of the solder.

Example:

Indicates lead-free solder of tin, silver and copper.

Using lead-free solder

When repairing a PWB with the “LF” symbol, only lead-free solder should be used. (Using normal tin/lead alloy solder may

result in cold soldered joints and damage to printed patterns.)

As the melting point of lead-free solder is approximately 40ºC higher than tin/lead alloy solder, it is recommended that a

dedicated bit is used, and that the iron temperature is adjusted accordingly.

GX25

Soldering

As the melting point of lead-free solder (Sn-Ag-Cu) is higher and has poorer wettability (flow), to prevent damage to the land

of the PWB, extreme care should be taken not to leave the bit in contact with the PWB for an extended period of time.

Remove the bit as soon as a good flow is achieved.

The high content of tin in lead free solder will cause premature corrosion of the bit.

To reduce wear on the bit, reduce the temperature or turn off the iron when it is not required.

Leaving different types of solder on the bit will cause contamination of the different alloys, which will alter their

characteristics, making good soldering more difficult.

It will be necessary to clean and replace bits more often when using lead-free solder. To reduce bit wear, care should be

taken to clean the bit thoroughly after each use.

GX25

PhoneGX25Service ManualService ManualMarketE

CHAPTER 1. GENERAL DESCRIPTION

FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO THE OPERATION MANUAL.

CONFIDENTIAL

[1] Specifications

General: Tri - band (GSM 900 MHz/DCS 1800 MHz/

PCS 1900MHz) GPRS-enabled WAP, MMS, SMS

Dimensions (folded, excluding the aerial) (H x W x D): 92 x 46 x 23.5 mm

Weight: 90 g Battery operating temperature: 0°C - 40°C Main display: Display dimensions: 2.0 inch

Resolution: 240 x 320 pixels LCD display: TFT 262,144 colours with backlight LCD back light: LED back light white colour LEDs

External display: Resolution: 72 x 12 pixels

Camera: C-MOS 350K pixels built-in camera

LCD display: STN B/W LCD with back light

Zoom: Wide and zoom mode [Supported 20 (when image size is 160 x 120 pixels) x zoom] Lens: F2.8, f = 3.7 mm

tion

Licensed by Inter Digital Technology Corporation under one or more of the following United States Patents and/or their domestic or foreign counterparts and other patents pending, including U.S. Patents: 4,675,863: 4,779,262: 4,785,450 & 4,811,420.

T9 Text Input is licensed under one or more of the following: U.S. Pat. Nos. 5,818,437, 5,953,541, 5,187,480, 5,945,928, and 6,011,554; Australian Pat. No. 727539; Canadian Pat. No. 1,331,057; United Kingdom Pat. No. 2238414B; Hong

Kong Standard Pat. No. HK0940329; Republic of Singapore Pat. No. 51383; Euro. Pat. No. 0 842 463 (96927260.8) DE/ DK, FI, FR, IT, NL,PT.ES,SE,GB; Republic of Korea Pat. Nos. KR201211B1 and KR226206B1; and additional patents are pending worldwide.

Sound: 40-polyphonic ring melodies Mobile light: 1 colours External DC supply voltage: 5.2 V Battery: 3.7 V, 780 mAh, Li-Ion Standby time: Up to 250 hours Tal k time : Up to 210 minutes Others: Side key

Infrared port 1.2 L/P (maximum distance 20 cm) Connector for AC charger and data cable Standard hands free connector (ø2.5)

Battery running time depends on the battery and SIM card as well as the network conditions and usage.

Specifications for this model are subject to change without prior notice.

Bluetooth is a trademark of the Bluetooth SIG, Inc.

The Bluetooth word mark and logos are owned by the Bluetooth SIG, Inc. and any use of such marks by Sharp is under license. Other trademarks and trade names are those of their respective owners.

CP8 PATENT

This product is licensed under the MPEG-4 Visual Patent Portfolio License for the personal and non-commercial use of a consumer to (i) encode video in compliance with the MPEG-4 Video Standard (“MPEG-4 Video”) and/or (ii) decode MPEG-4 Video that was encoded by a consumer engaged in a personal and non-commercial activity and/or was obtained from a licensed video provider. No license is granted or implied for any other use. Additional information may be obtained from MPEG LA. See http://www.mpegla.com.

This product is licensed under the MPEG-4 Systems Patent Portfolio License for encoding in compliance with the MPEG4 Systems Standard, except that an additional license and payment of royalties are necessary for encoding in connection with (i) data stored or replicated in physical media which is paid for on a title by title basis and/or (ii) data which is paid for on a title by title basis and is transmitted to an end user for permanent storage and/or use. Such additional license may be obtained from MPEG LA, LLC. See http:// www.mpegla.com for additional details.

1 – 1

[2] Names of parts

CONFIDENTIAL

GX25

1. Earpiece

2. Navigation Keys (Arrow Keys):

Up/Down arrow keys: Displays Contacts List

Left arrow key:

Right arrow key: Displays list of Saved

3. Left Soft Key: Executes the function at the

4. Send Key: Makes or accepts calls,

5. Centre Key: Displays Main menu in

6. Voice Mail Key: Press and hold this key to

7. */Shift Key: Switches character case

8. Main Display

9. Right Soft Key: Executes the function at the

10.End/Power Key: Ends a call, turns power on/

11.Camera Key: Starts the digital camera in

12.Keypad

15 16

Moves cursor to select menu items, etc.

entries in standby mode.

and indicate in this manual these keys. Displays list of Applications in standby mode.

indicates in this manual this key.

Pictures in standby mode.

indicates in this manual this key.

bottom left of the screen.

views the call logs in standby mode.

standby mode and executes functions.

connect to the Voice mail centre automatically. (Depends on the SIM card.)

among four modes: Abc, ABC, 123 and abc. Press and hold this key on the text entry screen to shift the text input method between multi-tap and T9 mode.

bottom right of the screen. Used to access “Vodafone

live!” by opening the browser in standby mode.

off.

standby mode.

13.#/Silent/Light Key: Switches symbol screens.

14.Microphone

15.Self-Portrait Mirror: For taking a self-portrait.

16.Camera

17.Speaker

18.Mobile Light: Used as an auxiliary light in

19.External Display

20.Handsfree Kit Connector

21.External Connector:

22.RF Connector

23.Battery Cover

24.Built-in Aerial: Warning: Do not cover the

25.Side-Up/Side-Down Keys:

26.Infrared Port: Sends and receives data via

Press and hold this key on the text entry screen to display the language options screen. Press and hold this key during standby to switch Profiles settings between Normal and Silent mode. Press , then during standby to turn the Bluetooth wireless function on or off.

digital camera/video camera mode, as a battery charge indicator, or notification for incoming calls, data/fax calls or messages.

Used to connect either the charger or USB data cable.

hinge area of the phone with your hand when in use as this may interfere with the performance of the built-in aerial.

Moves cursor to select menu items, adjusts earpiece volume, etc. Press and hold this key during standby to turn the mobile light on or off.

infrared.

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GX25

CONFIDENTIAL

[3] Quick Start Guide

The following is a sample quick start guide (Quick Start Guide for the UK model).

1 – 3

CONFIDENTIAL

GX25

1 – 4

GX25

[4] Optional Accessories

Li-ion Spare battery (XN-1BT30) Cigarette lighter charger (XN-1CL30) USB data cable (XN-1DC30) AC charger (XN-1QC30, XN-1QC31, XN-1QC32) Personal handsfree kit (XN-1ER20)

The above accessories may not be available in all regions. For details, please contact your dealer.

CONFIDENTIAL

1 – 5

CONFIDENTIAL

PhoneGX25Service ManualService ManualMarketE

CHAPTER 2. ADJUSTMENTS, PERFORMANCE CHECK, AND FIRMWARE

GX25

UPGRADE

SPST (SHARP Programme Support Tool) allows you to adjust settings, conduct performance checks, and upgrade the firmware.

[1] SHARP Programme Support Tool (SPST)

1. System requirements

• IBM PC compatible personal computer (standard COM1 115,200 bps serial port and USB required) Recommended OS: Windows 2000/XP Operable OS: Windows 98/98SE/ME (Downloader supports Windows 2000/XP only) Incompatible OS: Windows 95/NT (English, German, Italian, Spanish, French and Chinese versions)

• Data cable

• GSM tester: CMU200

• GPIB interface: National Instruments USB-GPIB cable (Model No.: NI GPIB-USB-B)

2. Introduction

2.1. Functions

SPST offers seven key functions:

1) Firmware download

2) User data transfer (processes all data at once but not individually.)

3) RF calibration check and test

4) Default setting

5) Identification

6) Performance check and adjustment

7) User password reset

2.2. Installation

1. Use Windows Explorer to execute the “setup.exe” file on the CD-ROM.

2. The SPST GX series setup wizard appears. Follow the installation instructions.

3. After the installation is complete, shortcuts to SPST are created on the desktop and under the “Start” — “Programs” — “GX Series“ menu. Start SPST from the shortcuts.

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GX25

CONFIDENTIAL

2.3. Starting up

Connect GX series to an operable serial port of the PC with the supplied data cable. Connect the AC charger to the data cable. Start SPST from the desktop.

1. The Input password dialogue box appears. Enter the password, select GX series from Port list box (a connected port is automatically detected), and click “OK”. If you do not know password, click “Cancel” to exit.

When using SPST for the first time, the driver installation starts and the following dialogue box appears. After the installation is complete, press "Retry".

Figure 1

2. To change the password, enter the current password in Figure 1, and then click “Change Password”.

Figure 2

3. To check the usage status of tools, click “Show Repair Log” in Figure 1.

4. Click “Downloader for Emergency”.

Figure 3

The above screen appears. Select a model to use and execute the Downloader. (Use this to initialise the flash, etc.)

2 – 2

CONFIDENTIAL

5. When the password is correct, a connection is established and the following screen appears.

Refer to the attachment 1 for the destination and operator name.

Figure 4

Buttons

GX25

First shipped software version: A02-008-0099-GX25

[D, E, EP, G, PP, S]

A15-008-0100-GX25C

[C]

A02-008-0120-GX25

[GP, L, W]

A02-008-0108-GX25

[B, R]

A28-008-0121-GX25V

[V]

Default Set Refer to “4.1. Default setting”. (see page 2-5) User Data Back-up Refer to “4.2. User data back-up”. (see page 2-6) User Data Restore Refer to “4.3. User data restore”. (see page 2-7) Downloader Refer to “4.4. Downloader”. (see page 2-8) RF Calibration & Check Refer to “4.5. RF calibration & check”. (see page 2-19) RF Test Refer to “4.6. RF test tool”. (see page 2-27) User Password Reset Refer to “4.7. Password reset”. (see page 2-33) Performance check adjustment Refer to “4.8. Performance check and adjustment”. (see page 2-34) **** mode release Refer to “4.9. ****mode release”. (see page 2-39) Exit End SPST.

Attachment 1 Destination and operator name list

No. Operator name Country Model name

01 Vodafone UK Post-Paid UK TQG250EB 02 Airtel Post-Paid Spain TQG250SB 04 Vodafone Omnitel Post-Paid Italy TQG250TB 05 D2 Post-Paid Germany TQG250GB 06 Vodafone NL Post-Paid Netherlands (Holland) TQG250HB 08 Vodafone Ireland Post-Paid Ireland TQG250RB 10 Vodafone Greece Post-Paid Greece TQG250DB 11 Vodafone Hungary Post-Paid Hungary TQG250BB 12 Vodafone Australia Post-Paid Australia TQG250AB 13 Vodafone New Zealand Post-Paid New Zealand TQG250ZB 14 Vodafone Sweden Post-Paid Sweden TQG250WB 15 Vodafone Egypt Post-Paid Egypt TQG250QB 16 Vodafone Malta Post-Paid Malta TQG250LB 17 Swisscom Post-Paid Switzerland TQG250CB 20 Si. Mobil Post-Paid Slovenia TQG250VB 45 D2 Pre-Paid Germany TQG251GB 48 Vodafone PT Pre-Paid Portugal TQG251PB 50 Vodafone UK Pre-Paid UK TQG251EB

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GX25

CONFIDENTIAL

3. Adjustments for GX25

1. Adjustments are required after replacing the following parts. ( )

Parts Temperature

adjustment

(Camera)

TH101

Main display unit

External display unit

Camera unit

When replacing other parts in the RF section, carry out RF calibration.

2. Click the buttons on the SPST screen for adjustments.

Temperature

adjustment

(Battery)

Main display flicker

adjustment

RF calibration

External display

contrast adjustment

3. The following screen appears.

To adjust the device, click this button (Performance check adjustment).

Figure 5

Temperature adjustment (Camera section)

Temperature adjustment (Battery section)

Main display flicker adjustment

External display contrast adjustment

Figure 6

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CONFIDENTIAL

4. Functions

4.1. Default setting

SPST can restore the factory settings.

This function

1. Deletes all user data in the file system;

2. Restores all WAP settings to default; and

3. Restores the values set by the user to default.

(MEPLOCK settings, the destination and operator name do not change.)

1) Set the COM port on the SPST initial screen and click “Default Set”.

2) Click “Yes” to proceed. Click “No” to exit.

GX25

Figure 7

3) Click “No” to back-up the MEPLOCK data. Click “Yes” to restore default settings.

Figure 8

4) Communication starts.

Figure 9

5) The following appears when you select “Yes” in step 3 and MEPLOCK data exists. Click “Yes” to restore the data.

Figure 10

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GX25

6) After the handset (phone) is turned on, the initialisation is complete.

CONFIDENTIAL

Figure 11

4.2. User data back-up

SPST saves all the data stored on the handset (phone).

1. Set the COM port on the SPST initial screen and click “User Data Backup”.

2. Specify the file name in the following dialogue box and click “Save”.

3. The communicating dialogue box appears whilst processing.

4. When completed, the following message appears. Click “OK”.

Figure 12

Figure 13

Figure 14

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CONFIDENTIAL

4.3. User data restore

SPST completely restores the backed up data.

1. Set the COM port on the SPST initial screen and click “User Data Restore”.

2. Specify the file name in the following dialogue box and click “Open”.

GX25

3. The communicating dialogue box appears whilst processing.

4. When the restore is complete, click “OK”.

Figure 15

Figure 16

Figure 17

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GX25

CONFIDENTIAL

4.4. Downloader

4.4.1 Introduction

Downloader allows you to upgrade the firmware.

1) Required devices

• PC (Operating System: Windows 2000, XP)

• GX25 handset (phone)

Figure 18

• USB hub You can use a USB hub to download data to multiple handsets (phones) at a time. (Recommended product) USB hub from Adaptec: XHUB7PLUS

Figure 19

• USB download cable

USB download adaptor cable USB data cable

Figure 20

* The USB download cable consists of the USB download adaptor cable and a USB data cable.

* A USB data cable is not the existing download cable.

* The USB download cable is exclusively for download, not for any other purpose.

2 – 8

CONFIDENTIAL

GX25

2) Precautions

Please read the following before use.

* This Upgrading Tool is designed for GX25. Make sure that you have chosen the correct handset (phone) and MOT file before you start the down-

load. Please note that use with another model may cause damage to handsets (phones).

* When an older version of GX25 Upgrading Tool has already been installed on the PC:

Remove the GX25 Upgrading Tool through [Add/Remove Programs] in the Control Panel, and then install the latest version.

* Download may fail depending on the version of Windows.

It is recommended to update Windows to the latest version before you start.

* Make sure to remove the handset (phone) battery.

(Download must be performed without a battery inserted.)

* Handsets (Phones) may not be recognised depending on the PC.

Disconnect the USB download cable from the handset (phone) and reconnect it. If the handset (phone) is still not recognised, repeat this a few times or disconnect the cable and restart the PC.

* Do not start/restart a PC with a handset (phone) connected.

* If a PC is set to the power saving mode, disable it before download.

* Whilst using a USB hub for download, do not use the remaining ports for other devices. Download may fail.

* When the Upgrading Tool does not work properly, uninstall and reinstall it.

4.4.2 Installation of the device driver

Install the device driver (SHARP The Upgrading Tool USB Driver Ver 0.90.0) on your PC.

1. Connect a PC and GX25 handset (phone) with the USB download cable. [Make sure to remove the handset (phone) battery before connecting them.]

2. Install the device driver following the Hardware Wizard. (For Windows 2000, the driver is automatically installed.)

Figure 21

Press "Next >" button.

Figure 22

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GX25

CONFIDENTIAL

Press "Continue Anyway" button.

Figure 23

Figure 24

Screen during installation.

Press "Finish" button.

Figure 25 Screen after installation

* Install the device driver for each handset connected to a PC.

For example, if five handsets are connected to PC using a USB hub, the install wizard of the device driver will appear five times. Install the device driver each time, following the instruction.

* If a handset (phone) is not recognised when connected to a PC:

Disconnect and reconnect the USB download cable. [If the handset (phone) is still not recognised, repeat a few times.]

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GX25

4.4.3 Download

This section describes how to initialise user data and write data to the handset (phone).

1) Application startup and screen descriptions

The icon below is created on your desktop after installation. Double-click it to start the Upgrading tool. You can also start the application by selecting “The GX25 UpgradingTool” from the Start menu.

Figure 26

The download setup screen appears after starting the application.

Figure 27

1. Select Device: Displays port numbers assigned to handsets (phones) that are recognised by the PC.

2. Select Load File: Specify a file to download.

3.Select Load Area: Select data area to write an MOT file.

4. Start Loading Flash: Press to start download.

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GX25

CONFIDENTIAL

2) Download

<<Make sure the following before starting download>>

• Make sure to download an MOT file to GX25 handset (phone).

• The handset (phone) battery is removed.

• The device driver is installed on your PC.

• Handset (Phone) is connected to a PC with the USB download cable.

<< Easy steps for download>>

1. Selecting a handset (phone) When handset (phone) is recognised as a device, the corresponding Port No. box is checked. [If the box is unchecked, data will not be downloaded to handset (phone).]

2.Selecting an MOT file Select an MOT file to download.

3. Selecting download area <Example> Check “Program Download” and “File System Initialize” and start download.

4. Starting download Press “Start Loading Flash” button to start download.

5. Completing download When download is successfully completed, “O” appears in the corresponding Port No. boxes. Click “OK” to exit.

• Estimated download time:

Approximately 15 minutes to download the file to one handset (phone).

Figure 28

2). 1 Selecting device

Check the corresponding Port No. box for the handset (phone) you want to download data to.

1. When a handset (phone) and the PC are connected with the USB download cable, the box of port number is automatically checked.

2. If the box remains unchecked, the handset (phone) may not be recognised correctly. Remove the USB download cable and reconnect it to the PC.

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CONFIDENTIAL

2). 2 Selecting MOT file.

Select an MOT file to download. Make sure to choose an MOT file for GX25.

1. Press “Select File” button in “2. Select Load File”. The file selection screen appears.

2. Select a file to download and press “Open” button.

3. When you select a file, the file name appears in the text box. Proceed to “3. Select Load Area”.

• Only Motorola format (.mot) file can be downloaded.

• You can select a file by entering a file name in the text box (without pressing “Select File” button). In this case, enter the file location together.

GX25

Figure 29 File selection screen

2). 3 Selecting download area

Usually select both “Program Download” and “File System Initialize”.

Figure 30

<“Program Download” and “File System Initialize”>

When both are selected, programme data is downloaded and user data area is initialised. Note that all the user data will be deleted after initialisation.

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GX25

2). 4 Starting download

Remove the handset (phone) battery before starting download. Make sure that only GX25 handset(s) [phone(s)] is (are) connected to the PC/USB hub.

• “Start Loading Flash” button is disabled when handset (phone) is not connected to a PC. Connect the PC and handset (phone) with the USB download cable.

• If “Start Loading Flash” button is disabled after connecting the handset (phone): Case 1: Handset (Phone) is not recognised by the PC. Reconnect the PC and handset (phone) with the USB download cable. Case 2: Some items are not selected on the download setup screen. Make sure items of 1 - 3 are checked.

CONFIDENTIAL

No handsets (phones) are connected. A handset (phone) is connected.

Press “Start Loading Flash” button to start download.

Figure 31

Figure 32

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CONFIDENTIAL

Download progress is shown on the PC and handset (phone).

GX25

Flash Loader V 6.00

Port No.1

Now loading

Display on handset (phone)

Display on PC

Figure 33 Screen during download

<< Aborting download>>

Press “Quit” button on the PC screen to stop download. “Please wait for finishing process...” is displayed during the process. Do not disconnect the USB download cable until the message disappears.

(Port No. 1)

Figure 34

To resume the download after aborting it, make sure to check “File System Initialize” first.

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GX25

2). 5 Completing download

Press “OK” button. “Please wait for finishing process...” appears in the dialog box. Leave the USB download cable connected until the message disappears.

When download is successfully completed, “O” appears as shown below. In the screen shot, downloaded data are written to the handset (phone) correctly.

CONFIDENTIAL

Flash Loader V 6.00

Port No.1

Received SUM value

SUM = 0xc4d9

Display on PC

Figure 35 Screen after download

<<Download errors>>

If download fails, a message appears on the PC and handset (phone).

1. Disconnect and reconnect the USB download cable, and try to download again.

2. Before you start the download, check “File System Initialize”.

Display on handset (phone) (Port No. 1)

Flash Loader V 6.00

XXXXX ERROR

Display on PC

Display on handset (phone)

Figure 36

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3) Download via a USB hub

Use a USB hub to download data to multiple handsets (phones) at a time. [Up to 10 handsets (phones) at a time]

* (Recommended product) USB hub from Adaptec: XHUB7PLUS (operation checked)

1. A USB hub is required. Use more according to the number of ports. *When using more than one hub, connect them as shown in the section 4.4.3.3).1.

2. Connect the USB hub to a PC.

3. Into the USB hub, insert the same number of USB download cables as handsets (phones).

4. Connect the USB download cables to handsets (phones).

5. Install the device driver (SHARP The Upgrading Tool USB Driver Ver 0.90.0). (For Windows 2000, the driver is automatically installed.)

6. On the download setup screen, port numbers become selectable for recognised handsets (phones). Refer to the section “4.4.3.2) Download” to perform download.

Note:

Do not connect other devices to the remaining ports during download via a USB hub. Download may fail.

3). 1 Using multiple USB hubs

Connect multiple USB hubs according to the following.

1. Connection in series (recommended)

GX25

PC USB

Hub

Figure 37

2. Connection in parallel

PC USB

Hub

USB

Hub

Figure 38

* When using more than one USB hubs, refer to the manuals to interconnect them.

USB Hub

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GX25

CONFIDENTIAL

4.4.4 Troubleshooting

This section describes error messages, solutions, and other important information. * Error messages appear on the PC screen.

1) Error message list

No. Displayed message Cause/Solution

1 Unable to open file Failed to open the MOT file to download.

2 Unable to Setup Device Check that the USB download cable is correctly connected to PC

3 The file you selected is unsuitable for Upgrading. The file is not downloadable.

4 Download Error !! - Close running resident programmes.

The following are possible causes:

- The file path contains special characters. Special characters: ~ ¥/:,;*?”<>|~

- The extension of the file is not “.mot”.

- The file is in use.

- The file path contains more than 257 bytes of characters.

- There is no drive letter in the file path.

- The file path is entered, but the file name is not.

- The file cannot be found.

- The file is located on a CD-ROM, removal disk, RAM disk or network drive.

and handset (phone).

Select a GX25 MOT file.

- Close all other running applications.

- Reconnect the USB download cable and retry.

- Install Windows updates (see “4.4.1.2) Precautions”)

* If an error occurs, disconnect and reconnect the USB download cable before you download again.

2) Other important information

• Do not start /restart a PC with a handset (phone) connected. (PC may freeze depending on the type.)

• If the power saving mode is set on the PC, disable it before download. (Download fails if the power saving mode is activated during the process and the PC may freeze.)

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4.5. RF calibration & check

CONFIDENTIAL

GX25

Stabilised power supply

Test battery

Handset (phone)

Data cable

RF cable

GSM tester

GPIB cable

Figure 39

4.5.1 Preparation

• Connect PC and GSM tester with a GPIB cable.

• Connect PC and handset (phone) with a data cable. (Use a test battery or similar.)

• Connect an RF cable of GSM tester to handset (phone).

2 – 19

GX25

4.5.2 Default setting for the programme.

• Activate the programme and set defaults.

CONFIDENTIAL

1) A connected COM port appears.

2) Set the GPIB No.

3) Select the test instrument.

4) Set the GPIB address.

5) Set the "Cable Offset" values.

For cables with connector QCNWK0138AFZZ/ QCNWK0136AFZZ, set the values as follows:

GSM 900: 0.60 DCS 1800: 0.95 PCS 1900: 0.96

6) Auto Dial Setting

When the Auto Dial check box is checked, an entered number is automatically dialled for performance check.

7) Number Setting

Enter a number for Auto Dial.

Figure 40

4.5.3 RF calibration

1. Apply 4 V using a stabilised power supply and turn on the handset (phone).

2. Start “RF calibration & check” on SPST and click “Cal”.

3. When initialisation is complete, the following message appears. Lower the stabilised power supply voltage to 3.7 V and click “OK”.

Figure 41

2 – 20

CONFIDENTIAL

4. Make sure the voltage is set properly and press “OK”. (Calibration starts.)

Figure 42

5. Click “OK”.

Figure 43

6. The initial screen returns.

4.5.4 RF performance check

1. Apply 4 V using a stabilised power supply and turn on the handset (phone).

2. Start “RF calibration & check” on SPST and click “Check”.

3. When initialisation is complete, the following message appears. Lower the stabilised power supply voltage to 3.7 V and click “OK”.

GX25

Figure 44

4. Make sure the voltage is set properly and press “OK”. (RF performance check starts.)

Figure 45

5. The following dialogue box appears after the check. Increase the stabilised power supply voltage to 4.0 V and click “OK”.

Figure 46

2 – 21

GX25

6. Make sure the voltage is set properly and press “OK”.

7. RF performance check is complete. Click “Save As...” and name the file to save the result. Click “OK” to exit.

CONFIDENTIAL

Figure 47

The following will be displayed in case of failure. See the attachment 2 for troubleshooting.

Figure 48

Figure 49

2 – 22

+ 102 hidden pages

Sharp GX25 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

SERVICING CONCERNS

CHAPTER 1. GENERAL DESCRIPTION

[1] Specifications

[2] Names of parts

[3] Quick Start Guide

[4] Optional Accessories

[1] SHARP Programme Support Tool (SPST)

1. System requirements

2. Introduction

3. Adjustments for GX25

4. Functions