HCD-M40D/M60D/M80D
27
Optical Block Diagnosis Flow (1/2)
Does Optical pickup move to inner circumference?
(Visual check)
Yes
Yes
No
Checks JL355 for +3.3V and CL308 for +1.2V REG IC303.
Does it output the power voltage of 3.3V and 1.2V?
Checks CN402 SL+/SL- signal.
Does it output the signal?
Does Spindle motor rotate?
(Visual check)
Yes
Does Optical pickup do focus search?
(Visual check)
No
Checks IC303 circumference circuit for +1.2V.
Checks IC009 (JL071) circumference circuit for +3.3V.
Yes
A
No
No
No
No
No
Checks circumference circuit for SL+/SL- of IC401.
Checks circumference circuit of IC301 FMO Signal.
REMOVE COVER, TOP
TURN ON
TRA
Y IN
The Sled motor has a problem.
Replaces BU.
Checks CN402 SP+/SP- signal.
Does it output the signal?
The Spindle motor has a problem.
Replaces BU.
Checks circumference circuit for SP+/SP of IC401.
Checks circumference circuit of IC301 DMO Signal.
Checks CN302 FCS+/FCS- signal.
Does it output the signal?
The Optical pickup has a problem.
Replaces BU.
Checks circumference circuit for FCS+/FCS- of IC401.
Checks circumference circuit of IC301 FOO Signal.
Yes
Yes
Yes
