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H
Laser abnormal
No laser
IsLDpinofXS100
4.5V?
No
Does voltage at D111
pin 22?
No
Does normal voltage
at D108 p i n 7 ?
Yes
Normal
Yes
1. Checkconnectionbetweenpickup
and mainboard.
2. Replace pickup.
1. Check connection between CXD1889
Yes
of pin LD and XS100.
2. Check CXD1889andperipheral
components.
1. Checkconnection between CPU
No
pin 7 and CXD1889 pin25.
2. Check CPU andperipheral
components.
13
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