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VL-H870U
VL-H860S/H/VL-H870S
VL-H875U
VL-H890S/VL-H94E
VL-H890U
VL-H96E/VL-H960E
6-4. AUDIO BLOCK DIAGRAM
INT MIC
RMiCC0086TA
P6601
INT MIC R
MIC GND
INT MIC L
6
5
1
2
IC602
TC4W66U
MUTE
MIX
DL
25
24
25
INT
27
AMP
EQ
30
EXT
INT
1
AMP
EQ
34
EXT
3
4
5
DL
MIX
3
2
1
IC601
MUTE
CXA1737R
46 45 44 43
CCA
DC
50
SHIFT
A
OUTPUT
SWITCHING
REC
PB
DC
52
SHIFT
AUDIO
LPF
REC
PB
REC
MATRIX
62
MIC
AGC
64
LINE
PB
FADE
REC
MIC
FADE
AGC
LINE
DET
2
AFADE
IC6601
LA7471M
20
8
LEVEL
SENSOR
PB
LIMITER
B
LPF
PB
REC
SW
NR
VCO
DET
1.5MHz
PLL
PB
LPF
DOD DETECTION
LIMITER
CIRCUIT
1.5MHz BPF
PLAYBACK
BPF
FR AGC
1.7MHz BPF
REC
LIMITER
AUDIO
LPF
PB
B
VCO
REC
PB
SW
A
PB
REC
REC
LPF
LIMITER
CCA
PB
LEVEL
SENSOR
3
4
6
7
8
9
6-5
SC601
EXT-MiC_L_IN
18
EXT-MiC_R_IN
17
AUDIO GND
16
AUDIO-R in/out
11
AUDIO GND
10
AUDIO-L in/out
9
IC1602 BA7785FS
2
AMP
4
AMP
6
AMP
7
14
13
AMP
MONO
MULTI
31
H.SW-P
MUTE DETECTION
CIRCUIT
24
REC AFM
BPF MONI
23
22
PB RF
MIX
ST MONO
STEREO
ON
20
PB MONO L
LPF
1.5MHz
DET
PLL
NR
VL-H860S/H/VL-H870S
VL-H890S/VL-H94E
VL-H96E/VL-H960E
SPEAKER
VSP0028-50WN
P201
SP
(-)
1
SP
(+)
2
SC902
SP
(-)
19
SP
(-)
18
SP
(+)
17
SP
(+)
16
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