Sharp VL-H860U Service Manual page 11

VL-H870U
VL-H875U
VL-H890U
7-4. 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
44 45 44 43
GCA
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
GCA
PB
LEVEL
SENSOR
3 4 6 7 8 9
11
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
BTL
MONO
MULTI
31
H.SW-P
MUTE DETECTION
CIRCUIT
24
REC AFM
BPF MONO
23
22 PB AFM
MIX
ST MONO
STEREO
ON
20 REC MONO
LPF
1.5MHz
DET
PLL
NR
VL-H860U
VL-H880U
SPEAKER
VSP0028-50WN
P201
SP (-) 1
SP (+)
2
SC902
SP (-) 19
SP (-)
18
SP (+)
17
SP (+) 16