Sony MHC-V4D - Optical Block Diagnosis Flow (Part 1); Optical Block Diagnosis (Part 1)

MHC-V3/V4D
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Optical Block Diagnosis Flow (MHC-V3/V4D) (1/2)
Does Optical pickup move to inner circumference? (Visual check)
Yes
Yes
No
Checks JL040 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 IC002 (JL040) 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 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
Ver. 1.3