Samsung DVD-SH853, Service Manual

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Trouble Shooting
4-28 Samsung Electronics
Refer to wave pattern image of Fig. 4-20
Refer to wave pattern image of Fig. 4-21
Refer to wave pattern image of Fig. 4-19
AV3 Audio Input is not Recording
I2C singnals in
IC216(pin16, 18) are swinged
between 0~5V?
Check the connection
between IC216(pin16m 18)
and FIC1(pin27,28)
No
Yes
Check audio
signal (41,42 pin of IC216)
wave form.
Check the passive parts
around jack pin.
Check the around supply
voltage of IC216.
No
Yes
Check the
supply voltage of VIC1 3.3V
(Main PCB)
Replace Main PCB
No
Yes
Check output I2S
singnal of audio DAC (VDR23,
VDR43,VDR24,VDR44)
Replace Main PCB
No
Yes