Read Sony HBD-NF620 / HBD-NF720 Service Manual online
HBD-NF620/NF720
3
Check that each power
supply is supplied to the
audio block.
supply is supplied to the
audio block.
Refer to the “1. Power check flow” on page 2.
NG
Check that a sound is
normally outputted from
each speaker.
normally outputted from
each speaker.
OK
Check that each speaker is connected normally.
Front//Subwoofer
Front//Subwoofer
NG
Check that the signal is inputted into the
following pins.
AMP board
IC3001 pin 39, 40, 48, 49
following pins.
AMP board
IC3001 pin 39, 40, 48, 49
OK
Exchange the IC3001.
Part No.
Description
6-718-105-01 IC TAS5534DGGR
NG
Check that the signal is outputted from the
following pins.
AMP board
IC3102 pin 10, 11 (SP FRONT R)
following pins.
AMP board
IC3102 pin 10, 11 (SP FRONT R)
pin 16, 17 (SP FRONT L)
pin 2, 3, 8, 9 (SP SUBWOOFER)
OK
Exchange the IC3102.
Part No.
Description
6-718-787-01 IC STA516BE
NG
Perform and check
[Audio Settings] -
[Speaker Settings] -
[Test Tone] in the menu
screen, or reinsert the
speaker cables.
[Audio Settings] -
[Speaker Settings] -
[Test Tone] in the menu
screen, or reinsert the
speaker cables.
NG
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