Kenwood VR 3080 - Dolby Digital Receiver Service Manual page 10

KRF-V7772D/VR-3080
4-3 Circuit control
(a) Selector IC
NJU7313AL(X09:IC4), NJU7312AL (X09:IC5)
PIN No.(Lch)
PIN No.(Rch)
SW No. (Lch)
SW No. (Rch)
*1 TUNER
CD1
MD/ T A PE1
VIDEO1
VIDEO2
VIDEO3
VIDEO4
A V AUX
PHONO
CD2 /T A PE2 o f f
CD2 /T A PE2 on
*2
*1: ANALOG INPUT or DIGITAL INPUT with except STEREO mode
*2: DIGITAL INPUT with STEREO mode
*3: CD2/TAPE2 MONITOR is set CD2 position and L2,R2(REC OUT of CD2/TAPE2) of NJU7312AL is always
used by '0'.
(b) Selector IC
TC9162A F(X08:IC15)
PIN No.(L ch)
PIN No.(R ch)
SW No. (L.R ch)
TONE on
TONE o f f
SPEAKERS B on
SPEAKERS B o f f
ANALOG THROUGH
D/ A OU T (LOW BOOS T on *1)
D/ A OU T (LOW BOOS T o f f)
*1: SW of f
(c) DSP:YSS912 (X08:IC51)OUTPUT PORT :OPORT0~7
(VIDEO SELECTOR, DIGITAL/ANALOG INPUT DISTINCTION)
PIN No. 32
P0
VIDEO1
VIDEO2
VIDEO3
VIDEO4
A V AUX
DIGI TAL IN
ANALOG IN
10
CIRCUIT DESCRIPTION
NJU7313AL
2 3 4 5
27 26 25 24
L1 L2 L3 L4
R1 R2 R3 R4
1 0 0 0
0 0 0 0
0 0 0 1
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 1 0 0
0 0 1 0
2
27
L1,R1
1
0
33 34
P1 P2
0 0 0
1 0 1
1 1 1
0 1 0
1 1 1
7 8 10 1 1 2
22 21 19 18 27
L5 L6 L8 L9 L1
R5 R6 R7 R8 R1
0 0 1
1 0 1
0 0 0
0 0 1
0 0 1
0 0 1
0 0 1
0 0 1
0 0 1
0 1
1 0
0 0 0 0 1
3 5
26 24
L2,R2 L3,R3 L4,R4
0
1
1
0
35 36
P3 P4
0 0
0 0
1 0
1 0
1 1
NJU7312AL *3
3 4 6 7
26 25 23 22
L2 L3 L4 L5
R2 R3 R4 R5
1 1 0 0
1 1 0 0
1 1 0 0
1 0 0 1
1 1 0 0
1 1 0 0
1 1 0 0
1 1 1 0
1 1 0 0
1 1 0 0
6 8 9
23 21 20
L5,R5 L6,R6
0
1
1 0
0 1
0 0
37 38
P5 P6
0
0
0
0
0
0 0
1 0
(1:H , 0:L)
8 10 11
21 19 18
L6 L7 L8
R6 R7 R8
0 0 0
0 0 0
0 0 0
0 0 0
1 0 0
0 1 0
0 0 1
0 0 0
0 0 0
0 0 0
(1:H , 0:L)
11
18
L7,R7
0
0
1
(1:H , 0:L)
39
P7
0
0
0
0
0
0
0