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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
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<BOTTOM>
a. Each IC function
b. Major bad item and repairs
1. Zoom and AF motor operation badness: UM2
2. Shutter and iris operation badness: UM1
3. Video out is outputting but TFT LCD isn't working.
-> LCD Back light power doesn't work.
U1 Audio Processer
U2 (RTC) Use the Back up battery and use as clock of camera. When finding
problems on indicated data; year, month, day and time, check
RTC circuit part
U3 (EEPROM) Various regulating factor of camera. Recorded initial value data
and etc.
This component's normal operation whether or not is up to
read/write of Data
iU1 Clock production for CCD operation and amplification of CCD
signal. Convert Analog signal to Digital signal.
U5~6 When reading CCD data, role of telling even or odd field as a
NOT, AND gate.
U8 (Coach) Management of CCD's image signal and I/F with initiative devices;
Jpeg compression, USB, Audio, Video.
U9 (Flash memory) Main program and font data are stored as 16M bit dual bank NOR
type.
U10, U15 (Buffer) Divide signals of SDRAM and CF Card.
U16 Circuit element for CF Card reset.
U17 Circuit element for CF Card chip select.
U18 Circuit element for CF Card output enable.
U24~25 (SDRAM) Being used as Image buffer, role of storing digital data of CCD
sensor module. After treating by DSP, this temporarily stored data
will store in Compact Flash memory as image data.
U28 Voltage regulator for Audio codec.
U29 Pre Amp for microphone.
UM1 Shutter Driver IC
UM2 Motor Driver IC
II CC NNoo .. FF UU NN CCTT II OO NN
ⅣⅣ.. PPRR OO DDUU CC TT CCOO NNSSTTRR UUCCTTIIOO NN
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U28
KKEEYY iinnppuutt
ZZoooommiinngg ccoonnttrrooll
AAUUDDIIOO ccoonnttrrooll RRTTCC && EEEEPP RROOMM
SSDDRR AAMM
FFLL AASSHH MMEEMMOORRYY && CCFF CCAARRDD부부
CCCCDD ccoo nnttrrooll
ⅣⅣ.. PPRR OO DDUU CC TT CCOO NNSSTTRR UUCCTTIIOO NN
UM1
BTP1
J4
U1
U2
J2
IU1
U8
UM2
J8
J15
U9
U24
U25
U10
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2) Power PCB Assembly
a. Each IC function
b. Major bad item and repairs
1. When Power is on, current excesses
. Components check: C40, C48, C34, C35, Q5, U102
. Connector part check: LCD FPCB connection part
2. LCD Power badness
. Components check : U101, D102, D101
※ o prevent Component (U101) ruin, add diode(D102) to output. But if this diode is
cooled or LED is destroyed and opened, U101 or D101 is destroyed.
. Q4 is destroyed when LCD image comes out white.
3. CCD Power badness
. Components check : T1, C42
-> Most of these cases are transformer is destroyed. Because excess current for short
flows to o.2W capacity power transformer (small package).
-> Second is C42 is destroyed. C42 is destroyed easily when polarity changes or
excess current flows.
U1 Load switch(+3.3VCC CCD power on/off control)
U2 Load switch(+3.3VCC LCD power on/off control)
U3 (PWM IC) Control IC every power produces from Power Board.
U4 IC for +5vcc Motor power.
U103 IC for +14V Backlight.
U101 IC for Battery power check.
U102 3.3V regulator for supply power to MICOM.
II CC NNoo .. FF UU NN CCTT II OO NN
ⅣⅣ.. PPRR OO DDUU CC TT CCOO NNSSTTRR UUCCTTIIOO NN
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<TOP>
C45 C44
D5
C40
VCC
GND
C43
C42
C3
C1
C2
Q4
U1
L2
C35
D4
T1
D5
L10
L9
C41 C6
C5
D1
C4
Q7
CCD
Q1
C48
C46
U4
D8
D7Q8C47
L1
Q8
U2
L11
C16
C13
Q5
L8
C8
C10
C20
U103
C105
L101
C34
R38
D101
R202
R25
R30
R26
C28
R201
Q6
R104
C106
C10/
C39
R31
R32
R28
C29
R34
R29
R20
R11
R18
C22
R4
C12
R1
R5
R6
C14
C11
C9
C7
R13
C27
C26
U3
R103
D102
C102
U102
C103
C104
R19
C23
R23
L6
D3
Q3
C25
L201
R102
C101
U101
R101
C17
D2
C19
C18
L3
Q2
C108
C50
C21
R21
R14 C15
R3 R12
R8
C31
R35
R33
R27
R24
C24
R17
R10
<BOTTOM>
ⅣⅣ.. PPRR OO DDUU CC TT CCOO NNSSTTRR UUCCTTIIOO NN
MM OOTT OORR ppoowwee rr
CCCC DD pp oowweerr
++22..55VV pp oowweerr
PPWWMM IICC
LLCC DD BBaa cckklliigghh tt
ppoowwee rr
++33..33VV pp oowweerr
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