LG LAC-M5600 Service Manual page 16

B
When laser light.
Laser lights?
YES
Check the signal FOCUS
SEARCH of IC506 Pin
(Refer to FIG1.)
YES
Check the signal of IC504
Pins 15 16 , .
(Refer to FIG1.)
YES
C When SPINDLE motor dose not turn
Check the change for
SPDO Voltage
21
of IC506 Pin .
(Refer to FIG3.)
Check the change for
SP +, SP –, Voltage
11 12
of IC504 Pins ,
(Refer to FIG3.)
YES
4. USB awareness badness (Refer to FIG5, 6.)
USB connection
YES
Normalcy operation
YES
OK
NO
Defective IC506
25 .
NO
Defective IC506
• Degraded laser diode
• Defective PICK-UP
NO
Defective IC506
NO
Defective IC504
.
Defective contact PN501
or PICK-UP
• Check power supply.
(IC301, IC302, PN301, CN702, CN703)
NO
• Check USB memory.
• Check USB Circuit.
(IC509, IC511, CN701, CN702, PN503)
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