SAMSUNG DIGIMAX 350 Service Manual 3

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11.. PPAARRTT SS AARRRRAANNGGEEMMEENNTT && TTRROOUUBB LLEESSHH OO OOTT IINNGG FFOORR EEAACCHH PPCCBB AASSSS''YY

1) Main PCB Assembly

<TOP>

a. Each IC function

b. Major bad item and repairs.

1. Power On badness

. Components check : DP1, CMP1, FP1

※ when inserting DC jack, Self/AF LED doesn't waver instantly. : Fuse is destroyed.

2. USB cognition badness

. Components check : Q1, Q2

3. Badness related to Video out : L3, U26, U27

. When image turns out black and white: CCD F PCB connection state check.

. Video image turns black: R83 is destroyed(AMP amplification doesn't work)

4. Badness related to TFT LCD: R84, R85, R86, R87, R88, R89, Q4, Q5, Q6

. When image turns out black and white: CCD F PCB connection state check.

. mage scatters diagonally: TFT LCD connector and EEPROM DATA check

. Though Video works, LCD is indicated as only OSD or LCD is indicated white.

-> U28 isn't set or cooled.

5. Mode conversion badness

. Components check : U19~23

U11 Control communications between U13 and U8 as a OR gate.

U12 System reset

U13 Manage whole camera operation Sequence.

U14 Control communications between U13 and U8 as a AND gate.

U4 IC for preventing EMI/ESD.

U26 Convert image signal output to TFT LCD or VIDEO.

U27 AMP to configure the Gain of Video out.

UEF1 Strobo Control

U19~23 Key operation management from Mode conversion.

II CC NNoo .. FF UU NN CCTT II OO NN

Ⅳ. PRODUCT CONSTRUCTION

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ⅣⅣ.. PPRR OO DDUU CC TT CCOO NNSSTTRR UUCCTTIIOO NN

ZZoooommiinngg ccoonnttrrooll

LLEEDD ddiisspp llaayy

DDCC // JJAACCKK

SSTTRROOBBOO ((cchhaarrggiinngg,,ffiirrii nngg))

KKEEYY iinnppuutt

VVIIDDEEOO && TTFFTT LLCCDD ccoonnttrrooll

UUSSBB II//FF

J1

S3

J3

J9

U13 (u-COM)

J5

DP1

CMP1

J10

J7

J11