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Circuit Block Diagram
■ Audio
Signal Flow
Sound signals (L & R) from AV1, AV2 or AV3 are input to AV SW IC (IC1001) and selected.
Sound signals from AV4 terminal are output for "Through Out" terminal.
Sound signals from D-SUB or AV4 are input to IC1001 after selected by SW IC (IC1002) .
The selected signals by IC1001 are output to Monitor Out and also input to below ICs.
Q-Sound IC (IC002) ➔ AMP IC (IC003) ➔ Audio Control IC (IC001) ➔ BBE IC (IC121)
Finally signals from IC121 are input to Digital AMP IC (IC071) for speakers and AMP IC (IC031) for Head Phone.
Note: Sound signals from IC001 is input Woofer AMP IC (IC004) too.
Sub CPU
L
AV3
R
Jack D
Jack A
L
AV1
R
L
AV2
R
Jack C
Through
Out
PC
L
AV4
R
L
Monitor
Out
R
Woofer
W
Out
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IC001
Audio Control
16(L),15(R)
22(L),21(R)
SURROUND
L
Main
R
AV3
14(L),16(R)
L
2(L),4(R)
R
AV1
L
8(L),10(R)
R
AV2
52(L),54(R)
59(L),61(R)
PC
L
5(L),14(R)
R
PC
3(L),13(R)
IC1002
L
1(L),12(R)
PC Sound
R
AV4
Switch
L
Monitor Out
R
IC121
BBE
EFFECTED
1(L),24(R)
BBE
6(L),19(R)
7(L),1(R)
IC003
AMP
6(L),2(R)
SURROUND
13(L),11(R)
L
L
23(L),2(R)
R
R
SELECTED
IC002
Q Suond
(Suurround)
1
2
W
-21-
IC031
Head Phone
Head Phone
(Main Unit)
AMP
L
7(L),1(R)
R
6(L),2(R)
IC071
Speaker X2
Digital
Sound AMP
L
+
25(L),20(R)
-
23(L),22(R)
R
10(L),13(R)
6
7
IC004
Woofer
AMP
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