Samsung DVD-905, Service Manual

Page: 54 / 136

Fig. 2-57 2 Channel down mixing
The switch operations are carried out by AIC47(14053) in case of 2 Channel down mixing
and sub woofer speaker using.
Table 2-1 Down mixing output table
2-7-3 CD/VCD audio output
The audio of CD and VIDEO-CD bypasses the audio data of SIC7(TC9420F) in VIC1 A/A decoder and outputs
them to DATA0. Also, they are outputted in stereo 2 channel(L/R channel) via D/A conversion and filtering of
KIC3. Then, the switching of DVD audio output outputted from AIC3 and CD/VCD audio ouput of KIC3 at
output in stereo 2 channels is describes in the below table.
Table 2-2 CD/DVD Ouput table
CD/VCD
DVD
Down mixing Sub woofer speaker using
AIC47(9,10,11 pin) L H L
Output
AIC17-2, 5 pin AIC17-1, 2 pin AIC17-12
No down mixing:open Mixed L/R ouput Sub woofer speaker output
Reference Information
Samsung Electronics 2-35
L CH
ZO
YO
XO
AIC47 (14053)
-4.5dB
R CH
CENTER
REAR
SUB WOOFER
FRONT L CH
FRONT R CH
SUB WOOFER
FRONT R CH (AIC31-PIN 1 OUTPUT)
FRONT C CH (AIC33-PIN 1 OUTPUT)
CD/VCD DVD
KIC5-9, 10 pin (A,B) H L
Output KIC5-1, 13 Pin signal output KIC5-2, 12 Pin signal output