FLY X7 Service Manual

Service Manual Page 1 Version 1.0 Oct 18, 2004

Service Manual

Model: X7

Copyright  NEWGEN TELECOM. This material, including documentation and any related computer programs, is protected by copyright controlled by NEWGENT TELECOM. All Rights reserved. Written permission from NEWGEN TELECOM is required for copying, adapting, or any kinds of reproducing any or all part of this document.

Service Manual Page 2 Version 1.0 Oct 18, 2004

Table of Contents

Revision History.............................................................................................................................................3

1. Introduction..............................................................................................................................................................4

2. Product Description................................................................................................................................................4

2-1. Features Set........................................................................................................................................................4

2-2. Minimum Radio Performance........................................................................................................................5

2-3. System block diagram...................................................................................................................................7

2-4. General Description of Each Functional Block.............................................................................................7

2-4-1. Antenna (or briefly ANT).....................................................................................................................7

2-4-2. Antenna Switch Module (or simply ASM module; U105)...............................................................8

2-4-3. SAW Band pass Filter (or, SAW BPF; F101, F102).............................................................................8

2-4-4. Transceiver IC (CX74063; U101)..........................................................................................................9

2-4-4-1. LNA Block.................................................................................................................................10

2-4-4-2. Quadrature Demodulator.......................................................................................................10

2-4-4-3. Base band signal processing block (or, “base band block” in short).................................10

2-4-4-4. Control circuit...........................................................................................................................10

2-4-4-5. Synthesizer block;.....................................................................................................................10

2-4-4-6. Power Amplifier (simply, PA; U102) ;...................................................................................12

2-4-5. Analog Base-band IC + PMIC (SKY20524; U201);...........................................................................12

2-4-5-1. Earpiece/Melody Speaker/ Headset Interface;...................................................................12

2-4-5-2. Power Management IC (or, simply PMIC; U201) ;..............................................................13

2-4-5-3. Internal Charger;......................................................................................................................13

2-4-5-4. Real Time Clock (or, simply RTC);........................................................................................13

2-4-6. Base and Processor IC (CX805-32; U301);.........................................................................................14

Service Manual Page 3

Version 1.0 Oct 18, 2004

Revision History

Version Date Author Status Remarks

1.0 Oct 18 Mounty Li Revised for Nostalgia Rev1.0

Service Manual Page 4 Version 1.0 Oct 18, 2004

1. Introduction

This document titled “Service Manual” is intended to serve as a technical guideline for repairing the GSM cellular phone (Model : X7) when in trouble. In order to troubleshoot a phone, service engineers or technicians should know about basic knowledge on how the cellular phone is working and how it was designed. According to symptoms of a problem, they should judge how to troubleshoot by taking proper procedure. This service manual with other separate documents will provide such information. In this document, the subject on system design, which is unique with X7, will be discussed, and some instructions for troubleshooting will be covered by “HW troubleshooting guide”. Of course, it’s impossible to cover all kinds of problems and its solution in a document, but tried to introduce basic and proper procedure for troubleshooting that can serve as a reference. Experienced service engineers or technicians maybe have their own tricks or know-how regarding some specific problems, which are not discussed in this material or other documents, and maybe theirs are more efficient and practical. Unless violate recommended warnings or cautions, they can use theirs at their own risks but it’s highly recommended to follow the guidelines suggested in this material if possible.

2. Product Description

X7 is a “Dual-band GSM phone” that supports both E-GSM and DCS 1800 bands, and their channel numbers (AFRCN) and operating frequencies are tabled at the end of this manual. X7 has many other features except basic phone operation, and can use some accessories with which X7 is used more conveniently and efficiently, and they will be discussed briefly hereafter since they are also part of candidates that service engineers or technicians need to troubleshoot.

2-1. Features Set

. 260K Color TFT display for Main LCD (2.2” Pixel Size: 176x220 ) . 64-poly melody play through stand-alone speaker . Vibrator for etiquette mode . Lithium-Ion Polymer Battery (Capacity: 570 mAh) with protection circuit . Headset for hands free (Mono, 3-pole with SEND/END Key) * . Blue LED Keypad backlight . Travel Charger (TC) . Internal Antenna .Touch panel . SIM Card Interface that support 3V SIM cards (5V SIM is not supported) . CMOS Camera Module (300K pixel resolution)

** Note: Other SW features are not included in the list, and you can refer to “User Manual” for detailed

features of X7 regarding their usage.

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