Samsung DVD-R157 Service Manual page 33

Audio Input is not Recording
Check the select
signal pin21,22of IC801
(JACK PCB)
Yes
Check all the 12Vcc
pin 14 of IC801 and 12Vcc pin 8
of AIC4(JACK).
Yes
Check the 5V pin5 of
DIC1 (MAIN PCB)
Yes
Check Digital clock
and data pin 116,117,118,119 of
DIC1(MAIN PCB)
Yes
Check the passive parts
around jack pin.
Samsung Electronics
Check pin 17,18(5V) of the
No
Front Micom IC601 (JACK
PCB)
No
Check SMPS
No
Replace Main PCB
No
Replace Main PCB
I2S_LRCK (Pin116 of DIC1)
I2S_BCK (Pin117 of DIC1)
I2S_MCK (Pin118 of DIC1)
I2S_DATA (Pin119 of DIC1)
Trouble Shooting
5-9