Sony MHC-V50D

MHC-V50/V50D
28
Optical Block Diagnosis Flow (1/2)
Does Optical pickup move to inner circumference? (Visual check)
Yes
Yes
No
Checks CL381 for +3.3V and +1.2V REG IC303. Does it output the power voltage of 3.3V and 1.2V?
Checks CN401 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 TOP PANEL REMOVE SIDE PANEL
TURN ON TRAY IN
The Sled motor has a problem. Replaces BU.
Checks CN401 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