Samsung SyncMaster 570BTFT Service Manual page 19

4 Troubleshooting
4-7 Microphones Don't Work
Does the PC's sound
program operate well?
Yes
Is the connection between the PC
and monitor secure?
Yes
Is the Internal Microphone
connector attached?
Yes
Does the Internal Microphone
work?
Yes
Does the External Microphone
work?
Yes
OK
4-8 Headphones Don't Work
Can you hear any sound from
the Headphones?
Yes
Do you hear sound from the
Internal Speaker?
Yes
OK
4-6
No
Check the PC's sound program
and compatibility.
No
Connect the cable between the PC
and monitor.
Check the connection between
No
CN805 on the Audio PCB and the
Internal Microphone.
No
Check Q802 and related circuits.
No
Check the CN182 jack.
Check CN813 on the Audio PCB
No
and related circuit R817, R820,
ZD801, ZD802.
Check the Headphone Plug in the
No
Headphone Jack and R821, R822,
C815 on the Audio PCB.
SyncMaster 570BTFT/580BTFT