Samsung i6410 Troubleshooting

9. Flow Chart of Troubleshooting

9-1. Power On

9-1-1. PDA Part

Insert Power

	NG
				No
Check pin 4 of V_BAT in
									Change the Battery & check ZD802
U502
is more than 3.1V
	Yes
Check followings :				No
									Check the U504
C532 is 1.8V
C544 is 3.0V									and the related cuircuit
C540 is 3.0V
	Yes
				No
Check C537 is 1.2V									Check the U504
									and the related cuircuit
	Yes
				No
Check pin 1 of TR500
									Check the UCP900
is 'H'
	Yes
				No
Check C530, C531 is 1.2V									Check the U504
									and the related cuircuit
	Yes
				No
Check pin 2 of U904 is 'H'									Check the U904
									and the related cuircuit
	Yes

Check Other Power Circuit

9-1

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Flow Chart of Troubleshooting

9-2

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Flow Chart of Troubleshooting

9-3

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Flow Chart of Troubleshooting

9-1-2. Phone Part

'Phone Power On ' does not work

Yes

Check the Battery Voltage

is more than 3.5V

Yes

Check followings :

C514 is 1.2V

C519 is 1.8V

Yes

Check C518 is 2.6V

Yes

Check C296 is 2.85V

Yes

Check U405 Pin 1 is 'H'

Yes

Check the initial operation

No

Change the Battery

No	Check the U501

and the related cuircuit

No

Check the U501

No	Check the U501

No	Check the UCP400

and the related cuircuit

9-4

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Flow Chart of Troubleshooting

9-5

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9-6

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9-2. Initial

Initial Failure

Yes

AP_nRST_IN = "High"?

No

Check the circuit related to reset

at R517

Yes

Check CLK

Bad

XTAL_12MHZ_IN / OUT

Change OSC900

at R909

Good

Bad

Check the 32bit data signal

Replace PBA

& memory(UCP900)

Good

END

9-7

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Flow Chart of Troubleshooting

9-8

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9-9

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Flow Chart of Troubleshooting

9-3. Charging Part

Abnormal charging part

Yes

Check the C512

> 4.3V

Yes

Check R512

= 'L' ?

Yes

Check the U500 pin 12

4.2V

Yes

END

No

No

No

Check the circuit related to VEXT_FET_5V and U500

Check the circuit related to TA_nCHG signal

Resolder or replace U500

9-10

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Flow Chart of Troubleshooting

9-11

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Flow Chart of Troubleshooting

9-12

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Flow Chart of Troubleshooting

9-4. Sim Part

Phone can't access SIM Card

Yes

C721 = "3.0V"?

Yes

After Power ON,

Check SIM_CLK Signal on

pin15 at SIM700

Yes

After SIM card insert,

SIM700 pin 13

= "H(SIM_RST)"?

Yes

Check the SIM Card

Yes

END

No

Check the PMIC(U501)

No

Check the SIM Clock

No

Resolder SIM700 or replace PBA

9-13

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Flow Chart of Troubleshooting

9-14

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Flow Chart of Troubleshooting

9-5-1. Microphone Part (Main MIC)

Phone Main MIC(For Handset Call, Voice &

Video Recording) does not work

YES

Check the signal at L606, C639 (MIC Signal)

OK

Check the signal at L605 (MIC Supply)

OK

Check the signal at C641

Yes

Check all power source related U603

Yes

Change the PBA

Not OK

Not OK

Not OK

Not OK

Resolder L606, C639 or Resolder MIC(MIC 600)

Resolder L605 and Check the U600

(MIC BIAS LDO)

Check the U604 (SPDT)

Change the PBA

9-15

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Flow Chart of Troubleshooting

VMICBIAS_2.8V

L605

C632	MAIN_MIC_N

C636

C637

MAIN_MIC_P

ZD602

L606

OUT 4

C639

MAIN_MIC_P

GND1GND2 3

2

POWER 1

C645

MAIN_MIC_N

MIC600

MIC_SEL

V_BAT

VMICBIAS_2.8V

U600

4

VDD

VOUT 1

MICBIAS_EN

3

CE

2

GND

GND

C604

5

C605

VAP_SYS_3.0V VAP_SYS_3.0V

VMICBIAS_2.8V

R618

	1		2		U604
01	VCC				NO1
	NO2				COM1
9
	COM2				IN1
8
	IN2				NC1
	NC GND
	7		6

3

5 4

MIC_IN_P

C641

MIC_IN_N

SUB_MIC_N

SUB_MIC_P

R600

C601

R601

R603

C606

C607

C608

C609

VAP_SYS_3.0V

D1

C2

C1

H5

C610

H4

J4

A1

B1

4

3

C8

VDD

OUT

I2S_SDO

H1

OSC600

J8

BT_PCM_IN

NC|TR GND

G1

1

2

I2S_SDI

H2

G9

BT_PCM_OUT

F2

AUDIO_EN

BT_PCM_SYNC

H9

F1

I2S_SYNC

J3

H3

AUDIO_EN

A9

C619

C602

C600

C603

8D

8A

9D

9E

2E

8F

2D

8E 7J

MOCV TBOCCV COCV 3DDVT 2DDVT DDSVA DDPV DDDV

D D

VA

J1

GPIO1

J9

SAIN1

GPO2

SAIN2

J5

SAIN3

U603

BICK

G8

BICKA

I2C

G2

BICKB

MCKI

CSN|CAD0

J6

H6

MCKO

CCLK|SCL

H8

MDT

CDTI|SDA

J2

MPWR

CDTO

MUTET

LIN1||IN1+

A2

A3

C611

SDTI

LIN2|IN2+

A4

SDTIA

LIN3|IN3+

B5

C613

SDTIB

LIN4|IN4+

A7

SDTO

LOUT1|RCP

B9

SDTOA

LOUT2

B6

C615

SDTOB

LOUT3|LO P

B2

SYNCA

RIN1|IN1-

B3

C616

SYNCB

RIN2|IN2-

B4

RIN4|IN3-

A5

C617

LRCK

RIN4|IN4-

PDN

B7

TEST

ROUT1|RCN

C9

ROUT2

A6

C618

ROUT3|LON

CN CN CN

4SS 3SS 2SS 1SS V V V V

2

1 3 C

7H

1E

9F

8B

I2S_SCLK BT_PCM_CLK

FM_SCL

FM_SDA

MIC_IN_P

RADIO_L

EAR_MIC_P MSM_SPK_P

RCV_P

CODEC_OUT_L MSM_MIC_P

MIC_IN_N

RADIO_R EAR_MIC_N

MSM_SPK_N

RCV_N CODEC_OUT_R

MSM_MIC_N

9-16

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9-17

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9-5-2. Microphone Part (Sub MIC)

Phone Sub MIC(For Loud SPK Call) does not work

	YES
Check the connection					Not OK
											Re-Connect!!
of HDC806
	OK
Check the signal					Not OK
											Change the Sub MIC module and
at L610, C654 (MIC
											Resolder L610, C654
Signal)
	OK				Not OK
Check the signal											Resolder L609 and Check the U600
at L609 (MIC Supply)											(MIC BIAS LDO)
	Yes				Not OK
Check the signal
											Check the U604 (SPDT)
at C641

Yes

Check all power source	Not OK		Change the PBA
related U603

Yes

Change the PBA

9-18

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9-19

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9-20

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9-6. Speaker Part(Melody)

Speaker does not work

Yes

Check the Speaker FPCB

and Speaker Module

Yes

Check the signal at

C640, C642

Yes

Check the signal at

C648, C646

Yes

Replace the Speaker Module

No

Replace the Speaker Module

No

Check all power source related U603

No

Change the PBA

No

Check the U605 and Resolder the U605

9-21

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9-22

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9-23

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9-7. Receiver Part

Receiver does not work
	Yes			No
Check the connection							Replace the Receiver Module
of HDC806
	Yes
				No
							Check all power source
Check the signal at
							related U603
ZD804, ZD805 of HDC806							and resolder or replace U603
	Yes
				No
Does it work?							Change the PBA

Yes

END

9-24

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