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
Loading...