Samsung SDR430 Troubleshooting

3-3. Trouble shooting

Power and initial stste check

Check CN1-2 +5V, +12V

after power cable connection

Y

IX1, MX1, SX1

oscillate

Y

MIC1 64pin change from

OV¡æ5V?

Y

SIC1 pin change

from OV to 5V?

(Check after connecting only power cable w ith
out IF cabl e connection)

N

N

N

N

Check power shoot, power supply

IIC1,MIC1,SIC1 power input are
normal, replace IX1, MX1, SX1

IIC3 9,10pin change

fromOV to5V

MIC1 power input

Y

PICK-UP moves in at power on

after moving out?

Y

TRAY open/close run?

Y

Laser diode is ON?

Y

FOCUS UP/DOWN run?

Y

N

N

N

N

See¡®SLED operation errow'

See¡®No TRAY open/close¡¯

See¡®No Laser diode on ¡¯

See¡®SERVO operation errow¡¯

Samsung Electronics

A

3-9

Toubleshooting

A

Y

<For DVD>

Focus lock runs?

SIC1 pin "OV"

Y

Dise rotates?

Y

<For CD>

Temporary stop state?

(TEsignal check)

N

See 'SERVO operation error'

N

See 'Disc rotation error'

N

See 'SERVO operation error'

2V

2.1V.

<TE signal at track jump>

(Temporary half state for DVD)

3-10

Samsung Electronics

No tr ay open/close

Toubleshooting

Pin between MSW2 and MR22

OV at pressing MSW2

Y

OV sigal is inputted into MIC1

49pin at pressing MSW2

Y

OV, 5V switching signal of MSWI 3

pin is inputted into MIC1 47pin?

Y

OV,5V switching signal of MSWI 1
pin is inputted into MIC1 43pin?

Y

N

Check MSW2 slodering

N

Check pattern disconnection from

MR22 to MIC1 49 pin

N

Check MSW1 soldering and patten

N

Check MSW1 slodering and patten

Approx. ¡¾2V DC voltage come from

DICI 15,16 pin on the basis of 2.1V

at pressing Open/Close key?

Connection between CN4

and loading motor is normal?

Open/close runs normally.

Samsung Electronics

N

Check DR16, DR16A, DR17,
DR17A,DR18,DR18A soldering,

and If still not operated,

replace IC104.

Y

N

Check CN4 soldering and
wire disconnection state

Y

3-11

Troubleshooting

No la ser diode on

Focus up/down runs?

<For CD family>

Y<For DVD>

Power and GND terminal are

normal?

(5V:21,27,46,51,52pin

OV:1,55,66,76pin)

Y

RIC1 60pin is

about 2.9V?

Y

N

Check power and initial state

B

N

N

Check power and GND pattem

Check RR22 soldering

Voltage difference of

RR22 is approx. 800mV?

Y

RIC1 59 pin voltage is

approx. 20mV?

Y

Replace Pick-up.

N

RR21,RQ2,RL2 soldering

N

Check CN2 soldering

3-12

Samsung Electronics

Troubleshooting

Power and GND terminal

RIC1are normal?

Y

RIC2pin is about 2.8V?

Y

Voltage difference between both

stages of RR2 is approx. 800mV?

Y

N

Check power pattem connection

N

N

Check RRI soldering

Check RR2, RQ1,RL2 soldering

RIC1 3 pin voltage is

approx. 20mV?

Y

Replace Pick-up.

N

Check RR23 soldering

Samsung Electronics

3-13

Troubleshooting

SERVO operation error

Insert disc

Y

Laser diode is on?

Y

Focus up/down runs?

Y

SIC138 pin is OV?

Y

Disc rotates?

Y

Track error siganl is inputted

into SIC1151 pin?

Y

C

N <For CD family>

<For DVD>

N

N

See 'No laser diode on'

D

N

E

N

See'No disc rotation'

Check soldering around SIC1

Y

E.F signal input in RIC1

79,80 pin and CN 2 connection

state are normal?

Y

N

3-14

N

DPD track error

siganl is oututted from

RIC133pin?

N

Check soldering

of SIC1 151pin

Replace RIC1

Check CN2 and RIC1colderingIf

still continued, replace Pick-up.

N N

A,B,C,D signalis

inputted into RIC1

67,68,69,70pin?

Y

Check RIC1 soldering

For no error,

replace RIC1

Check CN2. For no

error, replace Pick-up

Samsung Electronics

Troubleshooting

C

Tracking driving signal is

outputted from SIC1

159pin(TRO)?

Y

Tracking driving signal is

outputted from DICI11,12pin

on the basis of 2.5?

Y

Connection state between

CN1,4 pin and

DIC1 11,12 pin is normal?

Y

N

F

N

N

Check pattern from SIC1 159 pin to

DICI 6,7 pin and replace DICI

CN2 soldering and pattern

between CN2 and DIC1

Resistance between 1 and 4

pin is about 6.2§Ùafter removing

FPB connected with Pick-up

from CN2 connector?

Y

Check pattem and sodering between CN104 1,2pin and SIC5 17,18pin Check FPC connection

sensor PCB check connection state between Feed Motor and spindle Motor and CN3

state between CN104 and CN1 of Hall

Samsung Electronics

N

Replace Pici-up

3-15

Troubleshooting

3.3V: 5,12,16,33,59,78,89,116,138,144,160pin

D

Power and GND of SIC1

are normal?

5V:54,74,95pin

OV:3,8,9,17,22,61,66,83,105,110,

122,127,149,154,171pin

Y

N

Check SIC1 soldering For no error, see

'Power and initial state check'

430mV

SIC1 40pin changes from OV to

5V at power connection?

Y

Digital signal is inputted into

SIC1 41,42,43,44,46,47,48,49,50,51,52,53pin

Y

SIC1 158pin(FOO)output.

(Focus up.down driving signal)

N

N

See'Power and initial state check'

Check CN2 soldering and

check pattem between CN2 and DICI

N

Replace SIC1

3-16

Y

D-1

Samsung Electronics

D-1

Toubleshooting

Focus up/down driving signal

is outputted from DIC1,13,14pin on the

basis of 2.5V?

Y

Pattem between CN2 2,3pin

and DICI13,14 pin and connection state

between CN2 and

FPC B of Pick-up is normal?

Y

Resistance between 2 and 3

pin is about 5.3§Ùafter removing FPCB

connected with Pick-up

from CN2 connector?

N

Check DR3,DR4,DIC1 soldering

For no error, replace DICI

N

Reconnect after removing Pick-up

FPCB and CN2

N

Replace Pick-up

For no error in focus actuator,

check connection of FPC B and

Samsung Electronics

Y

CN2 connector

3-17

Troubleshooting

E

2V 2V..

Check SIC1 150pin

signal(Focus S-curve)

Y

RFSB signal goes up normally

when SIC1 152 pin is focused on?

N <For DVD>

N
<For CD family>

N

A,B,C,D signal is inputted normally in

RIC1 67,68,69,70 pin?

Y

RR10,RC20,SR65 soldering lf still

continued, replace IC101

A,B,C,D input are normal in

RIC1 72,73,74,75pin?

Y

Check RR9,RR9A,RC18,RC19

soldering lf still continued, replace RIC1

Check RIC1,SIC1 soldering

N

Replace RIC1

N

N

3-18

1V

Digital signal is normally

inputted in SIC1 41,42,43,

44,46,47,48,49,50,51,52,53pin?

Replace SIC1. lf error is

continued, replace Pick-up

Y

N

See 'Power and initial state check'

Y

Check Pick-up connection and FPCB contact lf

still continued, replace Pick-up

Samsung Electronics

Troubleshooting

F

Sqare wave signal is inputted

in DIC2 39pin at spindle

motor rotation?

F

Y

sgare wave signdl is inputted

in SIC1 175pin at spindle

motor rotation?

Y

SIC1 38pin goes down from

OV to 5V after MIC1 5pin is

focused on?

Y

Replace SIC1

Check DIC2 peripheral soldering

If still continued, replace DIC2.

N

Check SIC1 peripheral soldering

N

Check pattem and soldering between

MIC1 5pin and SIC1 38pin

Y

RF signal inputted in

SIC1 142pin

See' RF signal check'

Samsung Electronics

N

Y

Check soldering around SC30, SC31

Y

lf still continued, replace RIC1

3-19

Troubleshooting

Step Motor op erati on erro r

Move Pick Up to outside

Insert power code
<Supply PCB power>

Pick Up moves inside?

N

Signal is outputted from

MIC1 22,23 terminal?

Y

Signal is outputted from

DIC4 2,3,34,35 terminal?

Y

Check soldering CN3

Y

Check CN3 5,6 terminal connection

state and check 12V power

N

Check soldering MIC1

N

Check soldering DIC4 and

peripheral resoldering

3-20

Check Step Motor FPCB and

Step Motor

Samsung Electronics

Disc rotation error

Troubleshooting

Sqare wave signal is outputted

in SIC1 183pin?

Y

DIC2 41pin is outputted 5V?

Y

CN3 17pin

approx. 800mV?

Y

N

Check digital signal is

outputted in SIC1

41~44pin, 46~53pin

Check soldering state SIC1. If

(If still continued, replace

SIC1

N

Check connection stste MIC1

24pin

N

Check soldering state DIC2

(If still continued, replace)

N

CN3 10pin is outputted 5V?

Y

N

Wave signal is outputted

in CN2 11~16pin when the disk

is rotated by hand?

Check FPCB connection state

between CN2 and SPINDLE MOTOR

Check soldering state DIC2.

(If still continued, replace)

Samsung Electronics 3-21

Troubleshooting

RF si gnal check

RF signal is outputted

CN2 11pin?

Y

RF signal is inputted

RIC1 63,77pin°¡?

Y

RF signal is outputted

RIC1 45pin?

Y

RF signal is inputted

SIC1 142,143pin?

N

Check conection state

between PICK-UP and CN2.

If no error, replace PICK-

UP

N

N

Check soldering RC39, RC41

Check soldering RIC1 and

connection state SIC1 172,

173,174pin and

RIC1 14,15,16pin

N

Check soldering SC30, SC31

3-22

Samsung Electronics

No au dio outpu t (on CDT)

Insert audio disc

Y

Troubleshooting

Servo runs normally?

Y

Audio signal is outputted

from SIC1 4,7

Y

Audio signal is outputted from

AICI 1,7 pin?

Y

Signal is outputted from headphone
jack or connector for audio output

in the back?

N

See 'Servo operation error'

N

5V is supplied to SIC1 54pin?

Y

Replace ic601

See 'Power and

N

initial state

check'

N

Check headphone volume and

AICI soldering

N

Check mute and soldering

AC8, AC5, AL1, AL2, AR21, AR20

Check headphone and audio cable

Samsung Electronics

Y

3-21

Troubleshooting

Connect I/F cable of DVD-ROM and PC

Install error

Y

lnstall message comes out?

Y

MIC164pin is 5V at

power connection?

Y

MIC126pin is 5V?

Y

SX1, IXI oscillate?

Y

Digital signal between MIC1and MIC2 pattem

changes from OV to 5V?

Y

Digital signal between MIC1and MIC3 pattem

changes from OV to 5V?

N

Normal

N

N

See 'Power and initial state check'

N

N

Communication pattern disconnection

and MIC2 soldering

N

Communication pattern disconnection

and MIC3 soldering

3-22

Y

Digital signal between MIC1and IIC1 pattem

changes from OV to 5V?

Y

Communication signal of IIC1 and

IIC2is normal?

Y

Short and soldering exist between

IIC1 and CN1 pattem?

Y

Resoldering

N

Communication pattern disconnection

and IIC1 soldering

N

Communication pattern disconnection

and IIC2 soldering

N

Replace IIC1

Samsung Electronics