Samsung SGH-C100 Manual de usuario

SGH-C100

SERVICE

Manual

GSMTELEPHONECONTENTS

1.Specification

2.ExplodedViewsand PartsList

3.ElectricalPartsList

4.FlowChartofTroubleshooting

5.BlockDiagram

6.PCB Diagrams

GSMTELEPHONE

SAMSUNG Proprietary-Contents may change without notice

4. SGH-C100 Flow Chart of Troubleshooting

4-1

This Docu m ent can not b e used w ithout Sam sung's authorization

1.Power ON

C heck the current

consum ption m ore than

100m A

'POW ER ON 'does not w ork

C heck the V oltage of the

B a tte ry m o re th a n 3 .3V

Download again

Charge the Batte ry

C heck the capacitor C236

close by U 200(M SD ) is

m o re th a n 3 .2V

C heck to the path from CN 402 to

capacitor C236 close by U 200(M SD )

2.7V ¡´C 234 of

U 200(M SD )

=2.8V C heck the M SD (U 200)

Check the T P222 of

U 200(M SD ) ishigh¡ 2.8V C heck the C X805-31P(U 300)

C heck the initial operation

END

Yes

SAMSUNG Proprietary-Contents may change without notice

SGH-C100 Flow Chart of Troubleshooting

4- 2

This Do cu m ent can not be used w ithout Sam sung's authorization

2.Initial

Initial Failure

Check the R209 of

U200 is'High'

C heck the clock generation circu it

(re lated to U 200 and O SC200)

C heck the clock

signal'swaveat

R201(19.5M H z)

Check the U 200(M SD )

Yes

Check the T P234

3.9M H z w ave & T P220

is"High"

Check the U 200(M SD )

Check the connections and initialization

using F actory T est P rogram

Yes

END

Yes

SAMSUNG Proprietary-Contents may change without notice

SGH-C100 Flow Chart of Tro ubleshoo ting

4- 3

This Do cu m ent can not be used w ithout Sam sung's authorization

3.Charging

*T e st afte r conn ecting w ithBatte ry

:All4 term inalsinbattery sho uldbeconnected to the ph on e by using jum p -w ires.

Check the pin17

of CN 402 isaround

Abnorm al charging part

C heck the pin6of

U 210 is"LOW"

Check the T A

Check the U 210

C heck the pin3of

U 210 is "LOW "

END

Yes

No C heck the pin

3 of U 503 is

short to ground

Yes

C heck the connections of

4terminalsin b a tte ry

SAMSUNG Proprietary-Contents may change without notice

SGH-C100 Flow Chart of Troubleshooting

4- 4

This Do cu m ent can not be used w ithout Sam sung's authorization

SAMSUNG Proprietary-Contents may change without notice

SGH-C100 Flow Chart of Tro ubleshoo ting

4- 5

This Do cu m ent can not be used w ithout Sam sung's authorization

4.Sim

* Testwith S im

C heck the the voltage

at pin1& 5of

C N 500 is2.8V ?

Phone can't access SIM card

C heck the C N 500's

Connection toSIM

card

Check the circu itrelated to

C N 500

Resolder CN 500

Check the circu it around U 301

(M EM ORY) and datastoredinit

EN D

Yes

SAMSUNG Proprietary-Contents may change without notice

SGH-C100 Flow Chart of Troubleshooting

4- 6

This Do cu m ent can not be used w ithout Sam sung's authorization

SAMSUNG Proprietary-Contents may change without notice

SGH-C100 Flow Chart of Tro ubleshoo ting

4- 7

This Do cu m ent can not be used w ithout Sam sung's authorization

5.M icrophone Part

*Callwith S im before testing.

check the connection

from M IC500

MicroPhone does not w ork

R esolder M IC500

C heck the A udioloopback by

board test program .

EN D

Yes

check the voltage of

C214 ¡ˆ2.0V

Yes

C heck the patharoundMICbias

circu it

SAMSUNG Proprietary-Contents may change without notice

SGH-C100 Flow Chart of Troubleshooting

4- 8

This Do cu m ent can not be used w ithout Sam sung's authorization

SAMSUNG Proprietary-Contents may change without notice

SGH-C100 Flow Chart of Tro ubleshoo ting

4- 9

This Do cu m ent can not be used w ithout Sam sung's authorization

6.Receiver

*Call before testing.

Put 'sine w ave' from

8960, and Check the

pin5,7 of U 502 issine

wave

Receiver does not w ork

Check the pin3,9of

U 502 issine w ave

Check U 200 and speak related

circu it

C heck U 502 and soldering

END

Yes

C heck the w ave of

C412 & C421

Is Speaker w orking ?

C heck the path fro m U 5 0 2 to

SPK 400

Replace the Speaker

Yes

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