Service Manual

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Table Of Contents

SERVICE MANUAL

SERVICE MANUAL

August 14, 2001

Version 0.0

Table of contents

1. SPECIFICATIONS

1.1 General specifications

1.2 Receiver specifications

1.3 Transmitter specifications

2. OPERATING INSTRUCTIONS

3. DESCRIPTION OF SCHEMATIC

3.1 RF part

3.1.1 Power supply

3.1.2 Frequency synthesizer

3.1.2.2 RX IF synthesizer

3.1.2.3 TX IF synthesizer

3.1.3 RX part

3.1.3.1 Duplexer

3.1.3.2 LNA & Down Converetr

3.1.3.3 IFR3000

3.1.3.4 RX-IF SAW

3.1.4 TX part

3.1.4.1 IFT3000 (Baseband-IF Converter)

3.1.4.2 Up converter & Power Amplifier Pre-Driver

3.1.4.3 Power amplifier

3.2 Logic part

3.2.1 Power Supply

3.2.2 Digital Circuits

3.2.3. PCMCIA interface circuit

4. S/W TOOL OPERATING INSTRUCTIONS

5. TROUBLE SHOOTING

5.1 RF part trouble shooting

5.1.1 RF trouble shooting 1

5.1.2 RF trouble shooting 2

5.2 Logic part trouble shooting

5.2.1 Logic trouble shooting 1

5.2.2 Logic trouble shooting 2

5.2.3 Logic trouble shooting 3

5.2.4 Logic trouble shooting 4

6. TECHNICAL DOCUMENTS

6.1 Block diagram

6.2 Circuit diagram

6.3 Parts location map

6.4 Parts list

6.5 Equipment list needed

1. SPECIFICATION

1.1 General specification

1.1.1 Duplexer spacing : 80 MHz

1.1.2 Number of FA : 1150 channel

1.1.3 Power supply : 3.3 ± 10%

1.1.4 Power consumption :

1) Talk : 450mA (+10dBm)

2) Standby : 40mA for sleep mode, 200mA for idle mode

1.1.5 Operating temperature : -20C ~ 55C

1.1.6 Frequency stability : ± 150Hz

1.1.7 Antenna :

Extendable Antenna

1.1.8 Size : 85.6 x 54.0 x 5.0 mm (3.37 x 2.13 x 0.197 in)

1.1.9 Weight : 34g

1.2 Receiver specifications

1.2.1 Frequency range : 1931.25 ~ 1988.75 MHz

1.2.2 Local oscillator frequency range :

1720 ~ 1780MHz

1.2.3 Intermediate frequency 210.38 MHz

1.2.4 Sensitivity : Better than -104 dBm

1.3 Transmitter Specifications

1.3.1 Frequency range 1851.25

~ 1908.75 MHz

1.3.2 Emissions Designator: 1M25F7D

1.3.3 Local oscillator frequency range : 1720 ~ 1780 MHz

1.3.4 IF frequency : 130.38 MHz

Summary of content (4 pages)

PAGE 1
SERVICE MANUAL August 14, 2001 Version 0.0 Table of contents 1. SPECIFICATIONS 1.1 General specifications 1.2 Receiver specifications 1.3 Transmitter specifications 2. OPERATING INSTRUCTIONS 3. DESCRIPTION OF SCHEMATIC 3.1 RF part 3.1.1 Power supply 3.1.2 Frequency synthesizer 3.1.2.2 RX IF synthesizer 3.1.2.3 TX IF synthesizer 3.1.3 RX part 3.1.3.1 Duplexer 3.1.3.2 LNA & Down Converetr 3.1.3.3 IFR3000 3.1.3.4 RX-IF SAW 3.1.4 TX part 3.1.4.1 IFT3000 (Baseband-IF Converter) 3.1.4.
PAGE 2
1.3.5 Output power : 300 mW 2. OPERATING INSTRUCTION Before the card can be used to access the internet or sending/receiving e-mails etc., installation of software for the 1900-1X-CDMA card needs to be performed as per the instructions that accompany the installation diskette/CD. When the card is installed and configured properly, it will be automatically recognized when inserted in the type II slot in a Laptop computer.
PAGE 3
CDMA sampling clock synthesizer Local Oscillator for I-Q Mixer I.Q offset Control Loop Three-line Serial Bus Interface ( SBI ) for initializing and control of the IFR3000 from MSM5000 3.1.3.4 RX-IF SAW RX-IF SAW is used to reject any undesirable out of band signal. Rx Mode Operation 210.38 MHz of RX center frequency includes CDMA spread spectrum modulation signal that ±630KHz wide. Rx center frequency is converted to the I&Q baseband signal through a mixer that is part of IFR3000.
PAGE 4
- TCXO : The clock source for various blocks of the MSM3500.- 27MHz : The clock is needed for operation of u -processor that is in MSM53000 - 32.768KHz : This clock extends the battery life by operating the during sleep mode to save the power. MSM500 has following features: - Low operating voltage ( 2.7 ~ 3.