Samsung STH-N275 Manual de usuario

Need to check

Q107, Q106

Replace dome S/W

Need to check

Q107, Q106

Need to replace

Memory(U202)

Need to check neighbor part

Need to check OSC320,

Y201 & neighbor part

SAMSUNG Proprietary-Contents may change without notice

1-1

1. Trouble Shooting

1. Baseband Section

1-1. Program No Running

Press END Key

ON_SW=H

VBAT>3.2V

VCTCXO_IN=14.4MHz

32K_XIN=32.768 kHZ

Memory (U202)

control signal OK?

VCC=3.0V

V_VCTCXO=3.0V

RST=3.0V

IVCC=2.2V

BOOT=H

Program Running

VCC, ADD(0:21), DATA(0:15),

FLASH_CS, SRAM_CS, UBE,

MEMOEB, MEMWEB

SAMSUNG Proprietary-Contents may change without notice

1-2

Trouble Shooting

Need to check

U103 & neighbor part

Need to check

R126, C148

1-2. Abnormal LCD display ,EL Baob Light, Vibrator & Speaker Operation

START

LCD Control

Signal OK?

EL_EN=H

Need to check U104

& neighbor Part

EL Back light

OK?

VCC, ADD(2), DATA(0:7),

DISPLAY_CS, RST

LCD Display Running

Send Command EL

enable

Need to check

R216, U205, D202

VIBRATOR=H

Need to check CN202

Vibrator Run

OK?

LCD Display Running

EL Back lingt Running

Send Command Vibrator

enable

Need to check SPK101

& neighbor part

REC20+,- Signal

OK?

LCD EL Vibrator OK Send Command

Main Audio Receiver Path ON, Send

command Audio tone generator ON

Good

SAMSUNG Proprietary-Contents may change without notice

1-3

Trouble Shooting

Need to check Dome

S/W & U103

Need to check MIC101

& neighbor part

1-3. Abnormal Key, Mic, LED’S operation

Press Keys

Key Dispaly

OK?

Key Display Good

Send Command Main Audio Path ON

Input Audio signal to MIC+

Need to check

D210, D211, Q204, Q206

LED Operation

OK?

Key Display Good

Mic Path Good

Send Command ALT_LED_ON

Send Command SVC_LED_ON

Send Command LED_ON

Audio signal outpur

at Speaker?

GOOD

SAMSUNG Proprietary-Contents may change without notice

1-4

Trouble Shooting

1-4. Abnormal Buzzer Operation

START

Need to check

U204, D201, CN202

Ringer Signal

OK?

Send Command Ringer Path ON

Send Command tone generator ON

Replace CN202

Buzzer Sound Output

OK?

Buzzer Operation

Good

SAMSUNG Proprietary-Contents may change without notice

1-5

Trouble Shooting

1-5. Abnormal external Ear_Mic Jack operation

START

Need to check Q102,

CN101 & neighbor parts

HEADSET_SENSE=H

Hock Up Ear_Mic Phone in the Jack(U102)

Send Command MIC_BIAS_EN enable Send

Command AMP_EN enable

Need to check Q102,

CN101 & neighbor parts

SEND_END=H

Press Button on the Ear-Jack

Ear_Mic phone

Operation Good

SAMSUNG Proprietary-Contents may change without notice

1-6

Trouble Shooting

2. RF Section

2-1. Call processing and Online Test

DONE

START

Normal SVC?

Check RX path

Set up Call OK?

Check TX path

Measure SINAD/BER

Good?

Check RX path

Measure

Tx Power Good?

Check TX path

SAMSUNG Proprietary-Contents may change without notice

1-7

Trouble Shooting

Need to check

U302

2-2. Receiver Section (Offline test)

F305 input=-55dBm

Need to check

F305

Need to check

U105, U106, U107

F305 output=-49dBm

Need to check

F306

U301_8=-53dBm

Need to check

F304 & neighbor parts

RF_BAND=L, RX_BAT=H

PLL_ON=H, PON_LC=H

VCTCXO_PC=H, IF_ON=H

PON_VRF3=H

set up 8920B basestation for RX test

Set Base station RX Lev=-50 dBm

Send Command Cell band selection

Send Command RX path ON

Send Command channel selecton

START

V_LNA_CELL=H

U107_1=H

U105_1=H

Need to check

U301 & neighbor parts

F304 input=-33dBm

U304_45=-33dBm

SAMSUNG Proprietary-Contents may change without notice

1-8

Trouble Shooting

AMPSTDMA

Replace U304

Replace

F302

Need to check OSC301,

neighbor parts & U304_1,2,3

Need to check

U105 & neighbor parts

YRF loal check

U304_48 Lev=-6dBm

Freq=adjusted freq?

U304_41 Lev=-23dBm

Freq=130.05MHz

U304_34 Lev=-33dBm

Freq=130.05MHz

NNeed to check

U304, L303, C308, L301, C307

U304_37 Lev=-1dBm

Freq=450kHz

NReplace F301 or

Need to check R302, R304, C301

U304_25 Lev=-7dBm

Freq=450kHz

MODE

U304_40, 42=3.0V

SAMSUNG Proprietary-Contents may change without notice

1-9

Trouble Shooting

Replace U304

Case TDMA mode:

setup basestation for RX test

Amplitude:-50dBm

U304_9, 19, 11, 12

measure I/Q

Quarature wave N

Need to check U304 &

Quad LC Tank circuit

(L310, C328, C330,

C329, R320)

PON_LD=H

Case AMPS mode:

setup basestation for RX test

Audio Freq gen : 1004Hz

FM deviation : 2.9kHz

Y Y

U304_16 DEMOD

(sinusoidal wave)

Vp-p=24mV

Freq=1004Hz

Need to check U304 &

R327, R323, C353, C107

U101_52 DEMOD

(sinusoidal wave)

MAX Vp-p=1.4V

Freq=1004Hz

Replace U203

U101_40 BBCLK=

6.2208MHz or 4.96NHz or

5.12MHz

Replace U203

U101_32RX_CLK=

BBCLK/2 or

BBCLK/8

Replace U203

U101_31 RX_SYNC=

BBCLK/32 or

BBCLK/128

Replace U203

U101_31 RX_DATA=

serial data

DONE

SAMSUNG Proprietary-Contents may change without notice

1-10

Trouble Shooting

Replace U203

2-3.Transmitter Section (Offline test)

U101_40 BBCLK=

6.2208MHz or 4.096MHz

or5.12MHz

U101_34 TX_CLK=

BBCLK/32 or BBCLK/8

U101_33 TX_SYNC=

BBCLK/512 or BBCLK/128

U101_33 TX_DATA=

serial data

RF_BAND=L, TX_BAT=H

PLL_ON=H, VCYCXO_PC=H

IF_ON=H, PON_TX=H

PON_VRF3=H

setup 8920B as basestaion for

TX test audio signal?

Send Command cell band selection

Send command TX path ON

Send Command channel selection

START

AMPSTDMA

MODE

Otros manuales para STH-N275

Tabla de contenidos

Otros manuales de Teléfono móvil de Samsung

Samsung

Samsung SM-J510H/DS Manual de usuario

Samsung

Samsung SGH-J610 Manual de usuario

Samsung

Samsung GT-E1107 Manual de usuario

Samsung

Samsung SM-G3818 Manual de usuario

Samsung

Samsung SGHA226 SERIES Guía del usuario

Samsung

Samsung SM-N935FD Manual de usuario

Samsung

Samsung R225m - SGH Cell Phone Manual de usuario

Samsung

Samsung SCH-I415SAAVZW Manual de usuario

Samsung

Samsung GT-E1232B Manual de usuario

Samsung

Samsung T-Mobile t229 Manual de usuario

Samsung

Samsung SCH-400 Series Manual de usuario

Samsung

Samsung E630 - SGH Cell Phone Manual de usuario

Samsung

Samsung GT-I9195T Manual de usuario

Samsung

Samsung GT-C5130 Manual de usuario

Samsung

Samsung D820 - SGH Cell Phone 73 MB Manual de usuario

Samsung

Samsung SCH-A815 Guía de referencia

Samsung

Samsung Galaxy S Epic SPH-D700 Manual de usuario

Samsung

Samsung SCH-611 Manual de usuario

Samsung

Samsung SM-G981B Instrucciones de montaje

Samsung

Samsung GT-S5233W Manual de usuario

Samsung

Samsung SCH3500 - SCH 3500 Cell Phone Manual de usuario

Samsung

Samsung Galaxy XCover Pro 64GB Manual de usuario

Samsung

Samsung SGH-X208 Manual de usuario

Samsung

Samsung SPH-M310 Guía del usuario

Manuales populares de Teléfono móvil de otras marcas

Zte

Zte BLADE A520 Manual de usuario

Nokia

Nokia Lumia 620 Manual de usuario

Blackbe;rry

Blackbe;rry KEYone Manual de usuario

Bea-fon

Bea-fon X5 Premium Manual de usuario

Blackbe;rry

Blackbe;rry 8707 Series Manual de usuario

Blackbe;rry

Blackbe;rry Storm Instrucciones de funcionamiento

LG LM-X420QN Manual de usuario

LifeWatch

LifeWatch V Manual de usuario

Bea-fon

Bea-fon SILVER LINE SL860 Manual de usuario

IKI Mobile

IKI Mobile KF4.5i Manual de usuario

Hitech

Hitech HT-850 Manual de usuario

Yezz

Yezz Fashion F10 Manual de usuario

Point Mobile

Point Mobile PM60 Manual de usuario

Blackbe;rry

Blackbe;rry Q10 Manual de usuario

Blackbe;rry

Blackbe;rry Bold 9900 Manual de usuario

Blackbe;rry

Blackbe;rry STORM 9500 - VERSION 5.0 Manual de usuario

LG LM-K420EMW Manual de usuario

ISAFE MOBILE

ISAFE MOBILE IS655.2 Manual de usuario