Read Sony HCD-GPX5G Service Manual online
HCD-GPX5G/GPX7G/GPX8G
3
Optical Block Diagnosis Flow (1/2)
Does Optical pickup move to inner circumference?
(Visual check)
Yes
Yes
No
Checks 3.3V REG of DMB Mount and 1.8V REG.
Does it output the power voltage of 3.3V and 1.2V?
Checks CN801 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 circumference circuit for IC651,652 of DMB Mount.
If there are no problems, checks circumference circuit for
REG
IC of Main mount.
Yes
A
No
No
No
No
No
Checks circumference circuit for SL+/SL- of IC801.
Checks circumference circuit of IC501 FMO Signal.
REMOVE T
OP
P
ANEL
REMOVE SIDE P
ANEL
TURN ON
TRA
Y IN
The Sled motor has a problem.
Replaces BU.
Checks CN801 SP+/SP- signal.
Does it output the signal?
The Spindle motor has a problem.
Replaces BU.
Checks circumference circuit for SP+/SP of IC801.
Checks circumference circuit of IC501 DMO Signal.
Checks CN501 FCS+/FCS- signal.
Does it output the signal?
The Optical pickup has a problem.
Replaces BU.
Checks circumference circuit for FCS+/FCS- of IC801
Checks circumference circuit of IC501 FOO Signal.
Yes
Yes
Yes
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