Samsung SPH-A900 Service Manual

CDMA TELEPHONE

SPH-A900

CDMA TELEPHONE

CONTENTS

1. General Introduction

2. Circuit Description

3. Installation

4. NAM Programming

5. Product Support Tools

6. Test Procedure

7. Flow Chart of Troubleshooting

8. Exploded Views and Parts List

9. Block Diagram

10. Electrical Parts List

11. PCB Diagrams

This Service Manual is a property of Samsung Electronics Co.,Ltd. Any unauthorized use of Manual can be punished under applicable International and/or domestic law.

ⓒ

SamsungElectronicsCo.,Ltd. December.2005 Printed in Korea.

Code No.: GH68-08836A BASIC.

1. General Introduction

1-1. General Instruction

The SPH-A900 enables mobile users to communicate 3G CDMA2000 1X service into a single handset.

For CDMA/PCS mode, The SPH-A900 supports Release A of the CDMA2000 1X standard.

The SPH-A900 also features EV-DO high-speed data, Bluetooth as well as a swiveling 1.3 megapixel digital camera.

This stylish clamshell phone supports dual color displays, Bluetooth, MMS, voice dialing, airplane mode and EV-DO services.

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General Introduction

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2. Circuit Description

2-1. Logic Section

2-1-1. Power Supply

Press "END" key to turn on the phone and then the turns on the inner regulators( The

V_BAT

MSM6500(UCP102) sends out PS_HOLD(logical HIGH) to keep the inner regulators on even after the "END" key is released. on/off by the TCXO_CTRL signal. The other regulators( in the ON/OFF state by I The regulated Voltage(u200, V_MSMCORE) are used in the core of MSM. The regulated Voltage(u200, V_MSMC) are used in the digital part of MSM. The regulated Voltage(u200, VPD) are used in the digital part and memory of MSM. The regulated Voltage(u200, VPA) is used in the analog part of MSM. The regulated Voltage(u200, V_RFTX) is used in the Tx RF part. The regulated Voltage(u200, V_RFRX) is used in the Rx RF part. The regulated Voltage(u200, V_TCXO) is used in the TCXO. The regulated Voltage(u200, V_SYNTH) is used in the PLL part.

applied to ON_SW will change ON_SW_SENSE signal from HIGH to LOW.

V_MSMCORE, V_MSMC, VPD, VPA

V_RFRX

2

C-compatible 2 wire serial interface.

can be turned on/off by the RX_CTRL signal.

V_BAT

and

ON_SW

) of u200(MAX1526).

VDD2.6,V_SYNTH,V_RFTX,MOTOR_EN

signals will be connected. This

V_TCXO

canbeturned

)willbe

The regulated Voltage(u200, VDD2.6) is used in the voltage of camera . The regulated Voltage(u200, MOTOR_EN) is used in the MOTOR.

2-1-2. Inner Charging Circuit Part

The most important function of the charger shall be done in the PMIC(Power Management Circuit u200). When the phone with a battery is connected with a travel charging adapter, the inner charging circuit of the PMIC(u200) will charge the battery by constant fast charge mode. When battery reaches regulation voltage of 4.2V (default charging voltage for Li+mode), the charge current drops quickly to 0mA

- Input voltage range : 4.25～6.5V

- Charging Temperature : 0°C～40°C

- Charging Method : Constant Voltage/Current -Charging Current : Normal 550mA

- Charging Time : Standard (800mAh) 2.5 ~ 3 Hrs

-ChargingMode:①Charging

②

Completion

2-1

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Circuit Description

- Charging Battery Regulation Voltage

①

Min 4.158V, Typical 4.2V, Max 4.242V(at TA:0°Cto+85°C)

②

Min 4.137V, Typical 4.2V, Max 4.263V(at T

:-40°Cto+85°C)

A

Universal Serial Bus Interface

SPH-A900 supports a Universal Serial Bus(USB) interface by the MSM6500, to provide an efficient interconnection between the mobile phone and a Personal Computer(PC). The MSM6500's USB interface is designed to comply with the Universal Serial Bus Specification, Revision 2.0. An external USB transceiver(u200) is required to implement the USB interface.

2-1-3. Logic Part

The logic part consists of MSM, MEMORY,EL Keypad, LCD, CAMERA and other input and output peripherals.

MOBILE SYSTEM MODEM(ucp102:MSM6500)

Industry standard ARM926EJ-S microprocessor is embedded. The MSM6500 chipset integrates CDMA2000 1x and 1xEVDO service. The 1xEVDO solution can support High-speed peak data rates of

2.4Mbps on forward link and 153kbps on reverse link. The MSM6500 device is offered in a 409 ball, 0.5mm pitch, CSP production package. Subsystems within the MSM6500 device include a CDMA processor, a QDSP for voice compression, an ARM9TDMI microprocessor.AlsointegratedintheMSM6500device are analog functions such as an audio voice codec, PLL, transmit DAC

,ADCS, memories, USB controller, peripheral interfaces, and an enhanced

S

clock. It is one of the most important components of the CDMA cellular phone. The interface circuitry consists of reset circuit, dual address/data bus and memory controls. The TCXO clock of 19.2Mhz is used as the main clock of SPH-A900 model.

MCP : NAND FLASH and SDRAM (UME100(KBE00F003A))

MCP is consist of two 512Mbit(64M*8) NAND FLASH and two 256Mbit(4M*16*4Banks) Mobile SDRAM. NAND FLASH is used to store the Font data and program. EFS area is used to store ESN, NAM information, telephone directory, SMS messages and other important information of the phone, and also to store application programs and downloaded stuffs such as BREW applications and MP3. MCP is also used to excute the DMSS(Dual Mode Subscriber system) software. Using the down-loading program, the program can be changed even after the terminal is fully assembled.

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Circuit Description

EL Keypad

For key recognition, key matrix is operated by using SCAN(0:6) and KEYSENCE(0:3) of the input ports of MSM. EL(Electro Luminescence) is included in the keypad for easy operation in the dark.

LCD Module

LCD is composed of a Transmissive with Micro Reflective(TMR) type Main TFT-LCD Panel, Transflective type Sub TFT-LCD Panel, a driver circuit and a back-light unit. The resolution of a 2.22" Main LCD contains 240 * 320 pixels, the resolution of a 1.07" Sub LCD(Transflective) contains 96 * 96 pixels.

Clock

CPU clock : 19.2MHz. Clock signal from the TCXO Sleep clock : 32.768KHz. Clock signal for sleep. TCXO/N : 19.2/N MHz. This clock source is used by various blocks of the MSM6500 device, such

as the ARM9CORE, UARTs, general-purpose PDMs and TCXO is also used by the MSM6500 device to produce CHIPX8.

USB clock : 48MHz. Clock signal for the USB interface

CAMERA

The camera module consists of 1/4 CIS type 1.3 Mega (1310K) Pixels CMOS sensor. The camera module provides Auto IRIS, and Auto White-Balance functionality.

Bluetooth module

TM

Bluetooth module is a Bluetooth

1.1 and 1.2 compliant, stand-alone baseband processor with an integrated 2.4GHz transceiver. Bluetooth module supports any voice and/or data application that requires the Bluetooth SIG standard Host Controller Interface (HCI) via UART and PCM audio interfaces.

Operation Clock: 26MHz Low-Power Clock: 32.768KHz

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2-3

Circuit Description

2-1-4. RF Interface Part

CDMA Data Interface

- TX_Q_P, TX_Q_N, TX_I_P, TX_I_N (U402) : Tx analog signal used during CDMA

- RX_I_P, RX_Q_P, RX_I_N, RX_Q_N (U301) : RX analog signal used during CDMA

RF Interface

- TX : TX_AGC_ADJ(ucp102) is used to control the TX power, PA_ON_PCS(ucp102) is used to control the PCS power amplifier and PA_ON_CELL(ucp102) is used to control the CDMA power amplifier.

- RX : TRK_LO_ADJ(ucp102) is used to adjust the TCXO module.

2-1-5. Audio Part

The MSM6500 device integrates a stereo wideband voice/audio CODEC into the Mobile Station Modem. The integrated CODEC contains all of the required conversion and amplification stages for the audio front end.

The CODEC operates as a 13bit linear CODEC with the transmit(TX) and receive(RX) filters designed to meet ITU-T G.712 requirements. The CODEC contains the software controlled amplifier for both the receiving and transmitting sections. Also, the vocoding schemes used will be 13kbps QCELP and 8Kbps EVRC. The QCELP vocoder is based in the MSM internally.

2-1-6. Tx Audio Path

The voice signal from the microphone is filtered and amplified by the internal OP-AMP and is converted to PCM data by the internal CODEC in the MSM. And then these signals are applied to the the MSM(ucp102)'s internal vocoder.

2-1-7. Rx Audio Path

The PCM data from the MSM(ucp102) is inputted to the internal CODEC and the data will be decoded by the internal DAC. Audio levels are adjusted by the amplifier. And then audio is sent to the receiver.

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Circuit Description

2-1-8. Speaker Path

When the MSM(ucp102) receives the data, its internal CMX generates bell and melody. The CMX bell and melody generated in MSM6500 are sent to SAPA1D2. The SAPA1D2 (stereo class - D audio power amplifier) is a high quality audio power conversion chip generating 2.5W RMS output directly from the V_BAT supply. It is a high efficiency audio amplifier for mobile applications. The gain of amplifier in SPH-A900 set to 4(V/V) . The output generated in SAPA1D2 is intended to drive two speakers.

2-1-9. Key Tone Generator

The CODEC data out from the MSM6500 is converted to DTMF signal by TONE generator of internal

CODEC, which is then amplified by the internal audio amplifier to be sent to the speaker units.

2-2. PCS Section

2-2-1. Receiver

LOW NOISE AMPLIFIER (U300)

The low noise amplifier(It is included in RFL6000 : U300) amplifies a weak signal received from the base station to obtain the optimum signal level.

RF BAND PASS FILTER (F300)

The RF BPF(F300) passes only a specific frequency(1960±30 MHz) from the signal received from the mobile station. The bandwidth is 60 MHz.

VOLTAGE CONTROLLED OSCILLATOR(VCO300)

The VCO(VCO300) generates the signal having 1715 ~ 1788MHz frequency range. The VCO's output frequency is changed by control voltage. The PLL in S1M8690X generates this control signal and this signal is changed into DC control voltage by R-C Loop filter.

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Circuit Description

Frequency Synthesizer Circuit

The PLL(Phased Locked Loop) block consists of VC-TCXO(TCK301), PLL in S1M8690X and VCO(VCO300). Input reference frequency is generated at VC-TCXO(TCK301) and the RF local signal is generated at VCO. PLL compares the two signals and generates the desired signal with a preprogrammed counter which controls voltage.

VOLTAGE CONTROLLED TEMPERATURE COMPENSATED CRYSTAL OSCILLATOR (TCK301)

The VC-TCXO (TCK301) is a reference source of the frequency synthesizer. It provides 19.2MHz reference frequency to PLL-IC. It is a voltage controlled temperature compensated crystal oscillator having 19.2MHz ±2.5ppm frequency stability over all useful temperature range. A correct frequency tuning is made by the control voltage.

2-2-2. Transmitter

Intenna

Intenna sends signal to the base station and receives the signal from the base station. It is a tri-band Intenna and covers PCS band, CDMA band and GPS band.

RF Switch

It(U401:TQP4M3018) is used to switch the PCS path and CDMA path and the GPS path. The RF signal passes through PCS path when PCS_MODE is high(2.6V). The RF signal passes through CDMA path when CELL_MODE is high(2.6V). The RF signal passes through GPS path when GPS_MODE is high(2.6V). PCS_MODE, CELL_MODE and GPS_MODE are digital signals from MSM6500 GPIO.

Duplexer

Duplexer(DUF400) allows to transmit only the signals within acceptable Tx frequency range (1880 ± 30 MHz) through the Intenna. It provides the appropriate attenuation of transmitted signal at the receiver input and the appropriate rejection of the transmit-generated noise in the Receiver band.

Power Amp

Power amplifier module(PAM400:WS1413) amplifiers signal to be sent to the base station through the antenna.

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Circuit Description

Driver Amp

The driver amp(U402 ; included in S1M8690X) allows the signal to be inputted to the power amp(PAM400) as a specified level.

Up-converter(Mixer)

The up-converter(U402 ; also included in S1M8690X) receives the local signal and signal controlled by TX AGC amp(in S1M8690X) to generate Tx RF signal 1880±30MHz

which signal comes out from the mixer output by adding

F

means TX RF signal Frequency.

Tx

Automatic Gain Control Amp

The TX IF AGC amp (in S1M8690X) controls gain of AGC to deliver power level needed at driver amp. Its control voltage varies from 0.2V to 2.5V.

FTx* 0.7999

local signal.

2-3. CDMA Section

2-3-1. Receiver

Low Noise Amplifier(LNA)

The low noise amplifier(It is included RFL6000 : U300) amplifies a weak signal received from the base station to obtain the optimum signal level.

RF Band Pass Filter(Rx RF SAW Filter)

The RF BPF in F300 passes only a specific frequency(881.49±12.5 MHz) from the signal received from the mobile station. The b andwidth is 25 MHz.

Voltage Controlled Oscillator

The VCO(VCO300) generates the signal having 1715 ~ 1788MHz frequency range. The VCO's output frequency is changed by control voltage. The PLL in S1M8690X generates this control signal and this signal is changed into DC control voltage by R-C Loop filter.

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2-7

Circuit Description

Frequency Synthesizer Circuit

The PLL(Phased Locked Loop) block consists of VC-TCXO(TCK301), PLL in S1M8690X and VCO(VCO300). Input reference frequency is generated at VC-TCXO(TCK301) and the RF local signal is generated at VCO. PLL compares the two signals and generates the desired signal with a preprogrammed counter which controls voltage.

VC-TCXO

The VC-TCXO (TCK301) is a reference source of the frequency synthesizer. It provides 19.2MHz reference frequency to PLL-IC. It is a voltage controlled temperature compensated crystal oscillator having 19.2MHz ±2.5ppm frequency stability over all useful temperature range. A correct frequency tuning is made by the control voltage.

2-3-2. Transmitter

Intenna

Intenna sends signal to the base station and receives the signal from the base station. It is a tri-band Intenna and covers PCS band, CDMA band and GPS band.

RF Switch

It(U401:TQP4M3018) is used to switch the PCS path and CDMA path and the GPS path. The RF signal passes through PCS path when PCS_MODE is high(2.6V). The RF signal passes through CDMA path when CELL_MODE is high(2.6V). The RF signal passes through GPS path when GPS_MODE is high(2.6V). PCS_MODE, CELL_MODE and GPS_MODE are digital signals from MSM6500 GPIO.

Duplexer

Duplexer(DUF402) passes the RF signal of Rx frequency range(881.49 ±12.5 MHz) and Tx frequency range (836.49 ±12.5 MHz). It provides appropriate attenuation of transmitted signal at the receiver input and appropriate rejection of the transmit-generated noise in the Receiver band. It also matches LNA input in receiving part and PAM(PAM400:WS1102) output in transmitting part with the Intenna.

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Circuit Description

Power Amp

Power amplifier module(PAM400:WS1102 amplifiers signal to be sent to the base station through the antenna.

RF Band Pass Filter(Tx RF SAW Filter)

The RF BPF(F403) passes only specific frequency(836.49 ±12.5MHz) to send it to power amp(PAM400:WS1102).

Driver Amp

The driver amp(U402 ; It is included in S1M8690X) allows the signal to be inputted to the power amp(PAM400) as a specified level.

Up-Converter(Mixer)

The up-converter(U402 ; It is also included in S1M8690X) receives the local signal

FTx* 1.6666

and the signal controlled by TX AGC amp(in S1M8690X) to generate Tx RF signal

836.49±12.5MHz signal comes out from the mixer output by adding

F

means TX RF signal Frequency.

Tx

FTx* 1.6666

local signal.

Automatic Gain Control Amp

The TX IF AGC amp in S1M8690X controls gain of AGC to deliver power level to be needed at Driver amp. Its control voltage varies from 0.2V to 2.5V.

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Circuit Description

2-4. GPS Section

Intenna

Intenna receives a signal from GPS satellites. It is a tri-band Intenna and covers PCS band, CDMA band and GPS band.

RF Switch

It(U401:TQP4M3018) is used to switch the PCS path and CDMA path and the GPS path. The RF signal passes through PCS path when PCS_MODE is high(2.6V). The RF signal passes through CDMA path when CELL_MODE is high(2.6V). The RF signal passes through GPS path when GPS_MODE is high(2.6V). PCS_MODE, CELL_MODE and GPS_MODE are digital signals from MSM6500 GPIO.

Low Noise Amplifier Module(LNA)

The low noise amplifier(U302:ALM1106) amplifies a weak signal received from artificial satellite to obtain the optimum signal level.

RF Band Pass Filter(Rx RF SAW Filter)

The RF BPF(U404:B9000) passes only a specific frequency(1575.42±1MHz) from the signal received from the satellite. The bandwidth is 2 MHz.

2-10

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3. Installation

3-1 Installing and Removing the Battery

To install

battery into the phone. Put on the battery cover. Make sure the cover on the back are inserted into the matching slots in the phone. Press down until the latchsnaps into place.

, open the battery cover and insert the

Specifications using TA (Travel Adapter)

Battery Type Charging < 3 hours

SEC Code

To remove

battery cover latch release up completely. Pull and lift the battery away from the phone.

Standard Battery (Li-ion, 800mAh)

GH43-02101A

, make sure the power is off. Push the

3-1

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Installation

3-2

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4. NAM Programming

NAM program can be changed as following table: Notes:

- In the NAM program mode, each item show you the currently stored data. you can modify the data by entering a new data.

-Youcanmovetonextwindowbypressing"OK"key.

- When you press a wrong number, press " "

BACK

You can move to menu screen by pressing "MENU" key.

-

" key to delete all number

- You can change some selection option keys by pressing "Left" or "Right" navigation.

4-1. Single NAM

4-1-1. General Setup

LCD Display Key in Funtion

Enter

##MSL#

SVC Menu

1: View 2: Edit 3: Done

Phone Number

1234567890

MSID

1234567890

SVC Menu

1: View 2: Edit 3: Done

Phone Number

1234567890

MSID

1234567890

SVC Menu

1: View 2: Edit 3: Done

##222222#

1ViewPhoneNumberandMSID

Right key or Down

key

MENU or BACK Mobile ID is displayed

2 Choose'Edit'tochangePhoneNumberandMSID

OK

3 Choose 'Done' to exit the NAM mode

" key to delete the last number or press and hold

BACK

Enter the NAM Mode. Enter random 6-digit code (MSL) and

222222 is a default value.

Phone number is displayed

- Phone number setup

- To change phone number, enter phone #

-Storeit

- Mobile ID setup

- To change phone number, enter phone #

- Store it

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NAM Programming

4-1-2. NAM Mode Display

LCD Display Key in Funtion

#,#,3,2,8,2,# Enter the Data Program screen

3G Data Prog

1. User Name 2: Browser 3: IOTA Prog. 4: Camera URL 5: Advanced 6: Multimedia 7: Restore

Enter Service Code

??????

Advanced

1: View 2: Edit

ESN

B0000000

CERT

P_REV

6

VOCODER SVCOPT

EVRC

SCM

01101010

Lock Code

0016

Slot Mode

YES

Slot Index

2

HOME SID

4139

HOME NID

65535

MCC

310

MNC

00

ACCOLC

6

Right key or Down

5 Display the 3G Data program.

222222 Enter random 6-digit code (MSL) - 222222 is a default value

1 Choose "VIEW" to dispaly the Advanced NAM Information

key

Electronic Serial Number of the phone is displayed

Java security - Dormant Certificate Wakeup(On), and

Sleep(off) status is displayed

Common Air Interface version is displayed

13K or EVRC

Station Class Mark displays the power class, transmission, slotted class, dual mode.

Lock code, current status is displayed

Slot mode. 'Yes' indicates the slot mode.

Slot mode index. The high number means longer

sleeping time

SID written in the list,current status is displayed.

NID written in the list,current status is displayed.

ImsI Mobile Country Code, current code is displayed.

ImsI Mobile Network Code, current code is displayed.

CDMA Access Overload Class, current status is displayed

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NAM Programming

NAM CDMA Home Sys Reg

Yes NAM CDMA FSID Reg

Yes NAM CDMA

FNID Reg

Yes

Right key or Down

4-1-3. NAM Mode Setup

LCD Display Key in Funtion

3G Data Prog

1. User Name 2: Browser 3: IOTA P rog. 4: Camera URL 5: Advanced

6: Multimedia 7: Restore

Enter Service Code

??????

Advanced

1: View 2: Edit

ESN

B0000000

CERT

P_REV

6

VOCODER SVC OPT

EVRC

SCM

01101010

Lock Code

0016

Slot Mode

YES

Right key or Down

Left or Right key

key

MENU or BACK CDMA foreign NID,current status is displayed.

#,#,3,2,8,2,# Enter the Data Program screen ('##DATA')

5 Display the 3G dara program.

222222

2 Choose "EDIT" to change the Advanced NAM information

key

4-digit Code

OK

CDMA Home system ID, current status is displayed

CDMA foreign SID, current status is displayed.

Enter random 6-digit code (MSL) - 222222 is a default

value

Electronic Serial Number of the phone is displayed

Java security - Dormant Certificate Wakeup(On), and

Sleep(off)

Common Air Interface version is displayed

Origination Service Option is displayed

-ChangeServiceOption

-Storeit Station Class Mark displays the power class, transmission, slotted class, dual mode. Lock code, current status is displayed

- To change Lock Code, enter a new code

-Storeit Slot mode. 'Yes' indicates the slot mode.

- Change status

-Storeit

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NAM Programming

Slot Index

2

HOME SID

4139

HOME NID

65535

MCC

310

MNC

00

ACCOLC

6

NAM CDMA Home Sys Reg

Yes NAM CDMA FSID Reg

Yes NAM CDMA FNID Reg

Yes

0~7

OK

number

OK

number

OK

number

OK

number

OK

class number

OK

Left or Right key

OK

Left or Right key

OK

Left or Right key

OK

Slot mode index. The high number means longer sleeping

time

- To change Slot Index, enter new one

-Storeit

SID written in the list,current status is displayed.

- Enter new one to change code

-Storeit

NID written in the list,current status is displayed.

- Enter new one to change code

-Storeit

ImsI Mobile Country Code, current code is displayed.

- Enter new one to change code

-Storeit

ImsI Mobile Network Code, current code is displayed.

- Enter new one to change code

-Storeit

CDMA Access Overload Class, current status is displayed

- Enter new one to change code

-Storeit

CDMA Home system ID, current status is displayed

- Change status

-Storeit

CDMA foreign SID, current status is displayed.

- Change status

-Storeit

CDMA foreign NID,current status is displayed.

- Change status

-Storeit

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6. Test Procedure

6-1 List of Equipment

●

DC Power Supply

●

Test Jig

●

Test Cable

●

CDMA Mobile Station Test Set HP8285A, HP8960, CMD-80, etc

●

Spectrum Analyzer(include CDMA Test Mode) HP8596E,

6-2 Configuration of Test

6-1

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