Литература по ремонту аппаратуры / samsung / X620_Schematics

NEK S T C S )1 )3 5) )7 )9 )11 )31 )51 SC ESE KL FE FE NE AB ENT ( ( ( ( ( ( ( ( C R DD DD DD DD DD DD DD DD SD DC RD L A M KL RR R MA DE HG A C O I CL CL CL CL CL CL CL CL L LS CL CS DS AC P EV H CV LO RB

P N CMI 1KP 1KP 3P S S M

015C

905C

705C

265C

60

655C

5R

555C

455C

355C

955C

Mobilchips

855C

1 0 5

505C

405C

C

1

305C

D C C V

2

4

6

8

0 1

2 1

4 1

6 1

8 1

0 2

2 2

4 2

6 2

8 2

0 3

2 3

4 3

6 3

8 3

0 4

2 4

4 4

6 4

8 4

0 5

2 5

4 5

1

2

4

6

8

0 1

2 1

4 1

6 1

8 1

0 2

2 2

4 2

6 2

8 2

0 3

2 3

4 3

6 3

8 3

0 4

2 4

4 4

6 4

8 4

0 5

2 5

4 5

0 5

CN

65

N

CN

C

1

3

5

7

9

1 1

3 1

5 1

7 1

9 1

1 2

3 2

5 2

7 2

9 2

1 3

3 3

5 3

7 3

9 3

1 4

3 4

5 4

7 4

9 4

1 5

3 5

55

1

3

5

7

9

1

3

5

7

9

1

3

5

7

9

1

3

5

7

9

1

3

5

7

9

1

3

1

1

1

1

1

2

2

2

2

2

3

3

3

3

3

4

4

4

4

4

5

5

TAB V

205 C

065C

805C

165C

335C

235C

135C

035C

925C

825C

725C

625C

525C

425C

325C

225C

125C

025C

915C

815C

715C

) ) ) ) ) ) ) ) ) ) ) ) ) TOM N 0 2 4 6 8 ) ) ) N S 0 1 2 3 4 5 6 7 E T ( ( ( ( ( 0 2 4 E C N ( ( ( ( ( ( ( ( S D D D D D 1 1 1 W E D D D D D D D D M R D D D D D (D (D (D D DC H M M M M M M M M ID M C C C C C D D D C L S A A A A A A A A A L L L L L C C C M A C C C C C C C C C L L L L L F

Yes

No

Check the connect

Connect the camera module

LCD CN5

Yes

LCD IC 8 PIN 6 = 1.8V?

No

Check Signal PIN40 of CN1

PIN 4 = 2.6V?

Yes

Mobilchips

Board R506 < 29MHz

No

Check clock OSC300(R317) of U300

R317 =24.57Mhz

END

NO

It confirm LCD CN3 and

over 3V

Battery linking situation.

Check the LCD when

No

Check the voltage of LCD

folder opened

IC7 pin#1, 12, 14, 15, 16

YES

under 3V

Change LCD IC7

Check the LCD CN4 connect.

Check the SUB LCD

No

Check the VCC EL

Yes

when folder closed

Volt over the 16V?

YES

NO

Change the LCD IC9

END

Mobilchips

U103 pin#8 ≥ -65dBm

NO

Check C103, CN100

YES

pin#2,3 of

NO

Check U103

U103 ≥ -65dBm

YES

pin#1,2,3,28 Mobilchipsof U102

pin#20, 21

NO

Check

of U102 ≥ 65dBm

C106,C109,L103

YES

U102

NO

Check

pin#9, 32 = 2.8V

U401 pin#A13, #C421

YES

U102 CHECK

NO

pin#8 = 13MHz

Check OSC100

Vp-p = 950mV

YES

NO

Check U102

Vp-p = 120mV ?

YES

CHECK U401

2-1-2. DCS RX

CONTINUOUS RX ON

RF INPUT : 698CH

AMP

: -50dBm

NORMAL CONDITION

NO

CHECK ANT1,C143

catch the channel?

ANT2, L101 contact ?

YES

pin#8 of U103 ≥ -65dBm

NO

Check C103,CN100

YES

pin#4,5 of U103 ≥ -65dBm

NO

Check U103

YES

NO

pin#18,19 of U102 ≥ -65dBm

Check C113, C117, L106

Mobilchips

YES

pin#9,32 of U102 = 2.8V

NO

Check C421, pinA13 of U401

YES

At U102

NO

pin#8 = 13MHz

Check OSC100

Vp-p = 950mV

YES

pin#1,2,3,28 Vp-p

NO

Check U102

of U102 = 120mV

YES

Check U401

U101

NO

BATTERY

pin#6,17=3.7V

check & change

Mobilchips

YES

U101

NO

U401

pin#20 = 1.6V

check

NO

YES

U101 pin#4

about =-5dBm

YES