Read Sony BDV-NF620 / BDV-NF720 / HBD-NF620 / HBD-NF720 Service Manual online
HBD-NF620/NF720
6
2. Pass-fail judgment of the optical device (KEM-480AAA)
Perform pass-fail judgment to judge whether the repair of the optical device (KEM-480AAA) is necessary.
Perform pass-fail judgment to judge whether the repair of the optical device (KEM-480AAA) is necessary.
2-1. Flow of drive section check
NO
NO
Confirm whether
BD (BLX-104) can be
reproduced
Confirm whether
DVD (HLX-513)/
CD (HLX-A1) can be
reproduced
Confirm whether the
drive voltage is the
following values
CN5301 pin
3 : 12 V
Confirm OP FFC cable
(Part No. 1-838-108-11)
and SPD FFC cable
(Part No. 1-828-312-51),
and replace it when it
has been damaged
Then, confirm whether
this unit operates
normally
Confirm F5303,
F5305 to F5307
on the MB-149 board,
and replace it
when it has been
damaged
Confirm whether the
optical device IOP
is normal in the
service mode
(Refer to “2-2. Flow
of optical device
IOP check”)
Repalece the
optical device
(KEM-480AAA)
(Refer to “3. Optical
device (KEM-480AAA)
replacement”)
NO
YES
OK
YES
YES
NO
NO
Note: Refer to “2-12. BOTTOM COVER” (page 19) about how to remove the BOTTOM COVER).
2-2. Flow of optical device IOP check
YES
NO
Turn the power on,
and change function
to “BD/DVD”
Press the buttons on
the remote commander
in order of [DISPLAY],
[0], [2], [1] [SUBTITLE],
and enter the service
mode
Press the buttons on
the remote commander
in order of [8], [7], [3],
[ ], and the
dIOP value is displayed
OK
Confirm whether
value is the
specification value
Specification value:
BD :
±3 mA
DVD/CD:
±3 mA
Repalece the
optical device
(Refer to “3. Optical
device (KEM-480AAA)
replacement”)
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