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Flow chart of troubleshooting 9-49 – Sharp SGH-I600 User Manual

Page 100

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Flow Chart of Troubleshooting

9-49

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8

7

VDDA4

1

0

VDDA5

1

5

V

D

D

A

6

2

3

V

D

D

A

7

2

6

2

7

V

D

D

A

8

VDDA9

3

1

4

3

VDDM

VTUNE_REF

3

9

VDDA12

4

1

V

D

D

A

1

3

4

8

V

D

D

A

1

4

5

0

V

D

D

A

1

5

5

2

5

4

V

D

D

A

1

6

V

D

D

A

1

7

5

6

5

VDDA2

VDDA3

4

2

U

M

T

S

1

9

0

0

_

O

U

T

5

3

U

M

T

S

2

1

0

0

_

O

U

T

5

1

U

M

T

S

8

0

0

_

O

U

T

5

5

V

C

O

N

T

R

O

L

4

9

9

VCO_TUNE

VDDA1

4

3

6

VDDA10

VDDA11

4

5

S

B

S

T

4

6

TCXO

6

T

X

_

IN

1

9

T

X

_

IP

1

8

4

0

TX_MOD_CP

T

X

_

Q

N

1

7

1

6

T

X

_

Q

P

TX_VCO_FB

4

7

RX_IN

1

4

RX_IP

1

3

RX_QN

1

2

RX_QP

1

1

3

2

RX_VCO_IN

R_BIAS

3

3

4

4

S

B

C

K

S

B

D

T

2

4

G

S

M

1

9

0

0

_

IN

P

2

5

G

S

M

8

5

0

_

IN

N

2

1

G

S

M

8

5

0

_

IN

P

2

2

GSM900_INN

3

8

3

7

GSM900_INP

N

C

1

5

8

5

9

N

C

2

R

F

_

O

N

1

CP_HOLD2

2

9

D

A

C

_

R

E

F

2

0

FAQ1

3

F

A

Q

2

2

8

5

7

G

N

D

GSM1800_INN

3

4

3

5

GSM1800_INP

G

S

M

1

9

0

0

_

IN

N

U700

CP1

2

3

0

CP2

CP_HOLD1