Yamaha AUDIOGRAM 6 Service Manual page 53

Usb audio interface
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H
G
BLOCK DIAGRAM (AUDIOGRAM6)
MAIN6
PHANTOM (+48V)
COMBO
MIC A
[-60 to -16dBu]
CH INPUT1 L
JK101
MIC/INST
MIC B
[-60 to -16dBu]
Hi-Z
INST
[-44 to 0dBu]
SW101
Q103, Q104
SW101
COMBO
MIC A
[-60 to -16dBu]
CH INPUT2 R
JK201
MIC/INST
MIC B
[-60 to -16dBu]
Hi-Z
INST
[-44 to 0dBu]
SW201
SW201
Q203, Q204
LINE L/MONO
(CH3)
[-34 to +10dBu]
ST CH INPUT
LINE R
(CH4)
[-34 to +10dBu]
LINE L/MONO
(CH5)
[-34 to +10dBu]
ST CH INPUT
LINE R
(CH6)
[-34 to +10dBu]
+30dBu
+20dBu
Clip Level
ST CH IN LINE Gain: Min [+10dBu]
+10dBu
CH IN INST Gain: Max [0dBu]
0dBu
-10dBu
CH IN MIC Gain: Min [-16dBu]
-20dBu
-30dBu
ST CH IN LINE Gain: Max [-34dBu]
-40dBu
CH IN INST Gain: Max [-44dBu]
-50dBu
CH IN MIC Gain: Min [-60dBu]
-60dBu
F
E
LD101
PEAK
Q101,Q102,
Q107,
Q105,Q106
RE
IC102 (8P),
CH Level
IC101 (8P)
IC104 (8P)
IC103 (8P)
[-6dBu]
[-6dBu]
[-22dBu]
[-6dBu]
HA
COMP
BA
3
1
VR103
VR101
VR102
Level
SW102
(Gain)
[10 to 54dB]
MONO/STEREO
LD201
PEAK
Q201,Q202,
Q207,
Q205,Q206
RE
IC102 (8P),
CH Level
IC101 (8P)
IC104 (8P)
IC201 (8P)
[-6dBu]
[-6dBu]
[-22dBu]
[-6dBu]
BA
HA
COMP
5
7
VR203
VR201
VR202
Level
SW102
(Gain)
[10 to 54dB]
LD301
PEAK
RE
IC301 (8P)
ST CH Level
IC302 (8P)
[-6dBu]
[-22dBu]
[-6dBu]
HA
BA
5
7
5
7
VR302
Level
VR301
IC302 (8P)
JK301
(Gain)
[6 to 50dB]
BA
VR301
3
1
VR302
HA
3
1
IC301 (8P)
JK302
LD501
PEAK
RE
IC501 (8P)
ST CH Level
IC502 (8P)
[-6dBu]
[-22dBu]
[-6dBu]
BA
HA
5
7
5
7
VR502
Level
VR501
IC502 (8P)
JK501
(Gain)
[6 to 50dB]
BA
VR501
3
1
VR502
HA
3
1
IC501 (8P)
JK502
Clip Level
Clip Level
CH Level
ST CH Level
[Nominal: -16dBu]
D
C
PEAK
SIGNAL
DR
IC801 (8P),
IC802 (14P)
DR
Level
IC701 (8P)
IC702 (8P)
(MASTER)
[-6dBu]
[-6dBu]
[-12dBu]
SUM
SUM
BA
6
7
2
1
3
VR702
IC703 (8P)
SUM
SUM
BA
2
1
6
7
5
MUTE
Q901–903
6
IC201 (8P)
2
[-22dBu]
[–6dBu]
1
VR701
Level
IC202 (8P)
(DAW)
7
VR701
LD902
POWER
GR
+5V
+5V
LD901
PHANTOM
SW901
RE
+48V
+48V
-7.5V
-7.5V
+7.5V
+7.5V
Clip Level
MASTER
[Nominal: -6dB]
DAW
[Nominal: -6dB]
B
AUDIOGRAM6
LD801,
LD804,
LD803
LD806
L R
RE
GR
[-2dBu]
JK701
1
L
Q907
STEREO OUT
JK702
[-2dBu]
7
R
Q906
JK703
PHONES
[0.5mW @ 40ohms]
Q905
Q904
USB
[-20dBu]
LPF
CN701
7
LIN
D-
12
2
RIN
D+
13
1
GND
LPF
4
1
5
USB
+3.7V
REG
10
4
AUDIO
[-20dBu]
1
LPF
IC101 (5P)
2
IC102
3
LO
Vbus (+5V)
16
(28P)
RO
15
28
SSPND
20
21
LPF
6
X101
12MHz
IC301 (8P)
IN
2
OUT1
EN1
7
3
SW_IC
OUT2
EN2
6
4
IC601 (8P)
+5V
DC-DC
6
Q501,
IC501 (8P)
+5V
DC-DC
6
IC401 (8P)
+5V
PSUSB
DC-DC
6
+30dBu
+20dBu
Clip Level
+10dBu
0dBu
-10dBu
-20dBu
-30dBu
-40dBu
-50dBu
-60dBu
BLOCK DIAGRAM (AUDIOGRAM6)
A
1
2
3
4
5
3
6

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