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No tray open/close
Start
FPC is normally inserted in CN502?
Y
IC301 49pin is 0V at pressing SW301?
Y
IC301 35pin is 0V with tray in?
Y
IC301 36pin is 0V with tray open?
Y
IC501 12pin changes from 2.1V to 2.5V at pressing SW301?
Y
IC501 13pin and 14pin chage each from
6V, 6V, to 8V, 4V at pressing SW301?
Y
Output Voltage of IC501 13Pin is impressed into
SLED Motor(-) and IC501 14Pin(+)?
Y
Replace loading Motor.
OPEN tary repair
N
Check R528,R511,R512 soldering.
N
Replace IC501
N
Check pattern and soldering
between CN501 and IC301
v FPC : Flexible Printed Circuit
N
Retest after inserting FPC in CN502 properly
N
Check SW301 pattern and soldering
N
N
CN502 16pin
becomes 0V?
N
N
CN502 14pin
becomes 0V?
CLOSE operation repair
IC501 11pin change from 2.1V to +2V at pressing SW301?
IC501 13pin changes from +6V to +4V, and 14pin
from +6V to +8V, at pressing SW301?
14
8
Replace SW301
After FPC short check, no error, check SW soldering of deck
Y
FPC of CN502 is normally inserted?
N
Retest after inserting FPC in CN502 normally
After FPC short check, no error, check SW soldering of deck
Y
FPC of CN502 is normally inserted?
N
Retest after inserting FPC in CN502 normally
Y
Check R528,R511,R512 soldering
Y
Replace IC501
N
N
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