Yamaha IM8-32, Service Manual

Page: 234 / 307

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A B C D E F G H
IM8-40/IM8-32/IM8-24
BLOCK DIAGRAM (IM8-40/IM8-32/IM8-24)
BLOCK DIAGRAM (IM8-40/IM8-32/IM8-24)
3
28CA1-2001033136-1
INJK IN1 IN2
BUS1
BUS3 BUS4
BUS2L BUS2R
SUM MAS2
MAS1
MAS2
MAS1
USB
MAS1 MASJK
STJK
SUM
SUM
SUM
COMP
MASJK
MASJK
MASJK
MASJK
MASJK
STJK ST1 ST2
MAS1 MASJK
STJK
SUM LAMP POWER SUPPLY
CH INPUT
IM8-40: CH1 to CH40
IM8-32: CH1 to CH32
IM8-24: CH1 to CH24
ST CH INPUT 1 to 4
INSERT I/O
INPUT A
PHANTOM
INPUT B
[-60 dBu to -16 dBu]
[-34 dBu to +10 dBu]
IM8-40: CH1 to CH40
IM8-32: CH1 to CH32
IM8-24: CH1 to CH24
L (MONO)
R
(MINI JACK)
R
L
+48 V
RE
PAD HA
BA
[0 dBu]
[0 dBu]
[0 dBu]
[0 dBu] [0 dBu] [-6 dBu]
[0 dBu]
[0 dBu]
[0 dBu]
[0 dBu]
[-10 dBu]
ST CH Fader
[0 dBu] [0 dBu]
[0 dBu]
[0 dBu]
[-6 dBu]
[0 dBu]
1–2
7–8
ST
MONO
3–4, 5–6
1–2
7–8
ST
MONO
3–4, 5–6
[-10 dBu]
CH Fader
[0 dBu]
INV
INV
INV
INV
INV
INV
INV
BA
BA
BA
BA
BA
BA
BA
SUM
INV SUM
INV
BA
BA
BA HA
SUM
CTRL
INV BA
PAN
PRE
AUX1
AUX1 AUX2 AUX3 AUX4 AUX5 AUX6 AUX7 AUX8 GROUP1
GROUP
OUT1
GROUP
OUT2
GROUP
OUT3
GROUP
OUT4
GROUP
OUT5
GROUP
OUT6
GROUP
OUT7
GROUP
OUT8
ST
OUT
L
ST
OUT
R
MONO OUT
GROUP2 GROUP3 GROUP4 GROUP5 GROUP6 GROUP7 GROUP8 ST
L
ST
R
MONO PFL
L
AFL
L
AFL
R
PFL
R
PFL
CTRL
AFL
CTRL
MUTE CTRL
AUX3–4
AUX5–6
AUX2
AUX7
AUX8
[-6 dBu]
1–2
7–8
ST
MONO
ST
MONO
ST+MONO
AUX1–2
AUX3–4
AUX5–6
AUX7–8
GROUP1–8
M1–2
M1 BUS
M2 BUS
M3 BUS
M4 BUS
M3–4
PFL
3–4, 5–6
[-6 dBu]
[-6 dBu]
[-6 dBu]
[-6 dBu]
[0 dBu]
[0 dBu]
[0 dBu]
[0 dBu] [-11 dBu] [-5 dBu]
+30 dBu
Clip Level (CH INPUT A, B)
Clip Level (CH)
Clip Level
(RETURN)
RETURN
(PAD+BA)
INSERT I/O,
DIRECT OUT
[0 dBu]
CH Fader
[Nominal: -10 dB]
RETURN
[Nominal: -6 dB] 2TR IN
[Nominal: -6 dB]
TB
[Nominal: -6 dB]
AUX (CH, RETURN)
[Nominal: -6 dB]
Clip Level (ST CH LINE IN)
Clip Level (USB IN) Clip Level (GROUP)
Clip Level (ST, MONO, AUX)
Clip Level (MATRIX) Clip Level (MONITOR)
Clip Level (PHONES)
Clip Level
(REC OUT)
MATRIX (GROUP) MATRIX SUM
MATRIX (ST, MONO)
REC OUT [-10 dBV]
AFL (GROUP)
AFL (ST, MONO, AUX) BUS (GROUP, ST, MONO, PFL, AFL)
BUS (AUX)
AUX INV
Clip Level (TB)
Clip Level (2TR IN)
RETURN [+4 dBu]
TB IN [-50 dBu]
USB IN [0 dBu]
2TR IN [-7.8 dBu]
ST CH LINE IN [+10 dBu]
ST CH LINE IN [-34 dBu]
CH INPUT A, B [+10 dBu]
CH INPUT A, B [-16 dBu]
CH INPUT A, B [-34 dBu]
CH INPUT A, B [-60 dBu]
+20 dBu
+10 dBu
-10 dBu
-20 dBu
-30 dBu
-40 dBu
-50 dBu
-60 dBu
0 dBu
+30 dBu
+20 dBu
+10 dBu
-10 dBu
-20 dBu
-30 dBu
-40 dBu
-50 dBu
-60 dBu
0 dBu
[0 dBu]
USB IN (L)
USB IN (R)
AUX1
AUX3–4
AUX5–6
AUX2
AUX1
AUX2–AUX3
AUX4
AUX7
AUX8
PRE
BAL
PRE
PFL
PFL
PRE
RETURN
2TR IN
TB
PFL
PAD
PAD
HA
HA
INV
INV
INV
LOW
HI-MID
LO-MID
HIGH
LOW
Hi-Mid
Lo-Mid
HIGH
f f
g g
4-Stage EQ
4-Stage EQ
4-Stage EQ
HPF HPF
COMP
COMP
ON
N
R
PAD GAIN
GAIN
DIRECT OUT
Inner Jumper
AUX PRE
Inner Jumper
J
J
Pre EQ Pre EQ
EQ
RE
YE
YE
YE
YE
YE
YE
MUTE
1
2
3
4
CTRL
ON
YE
ON
YE
(ON: BLINK)
MUTE
1
2
3
4
GR
PEAK
0 dB
-20 dB
PEAK
0 dB
-20 dB
PEAK
0 dB
-20 dB
PEAK
0 dB
-20 dB
RE
YE
GR
PEAK
0 dB
-20 dB
EQ
Pre FADER
Post FADER
(Factory set)
Post EQ
(Factory set)
[-60 dBu to -16 dBu]
[-34 dBu to +10 dBu]
[-34 dBu
to
+10 dBu]
[0 dBu]
RETURN 1–4
[+4 dBu]
2TR IN
[-10 dBv]
[-7.8 dBu]
TB IN
[-50 dBu]
LAMP1
[12V]
LAMP2
[12V]
LAMP3
[12V]
POWER SUPPLY
POWER
LAMP3 40ch
To Mixer [+48V]
To Mixer [±15V]
To Mixer [+12V]
To LAMP [+12V]
DIRECT OUT
[0 dBu]
LINE L
[-34 dBu to +10 dBu]
LINE R
[-34 dBu to +10 dBu]
MUTE MASTER
POWER
CTRL
1
2
RED
RED
GR
RED
RED
3
4
[0 dBu]
[+4 dBu]
[+4 dBu]
INV SUM
[0 dBu]
INV SUM
[0 dBu]
[0 dBu]
[0 dBu]
[+4 dBu]
[+4 dBu]
[-6 dBu]
INV SUM
INV SUM
INV
SUM
MATRIX
M1–4 BUS (from TB)
[0 dBu]
[0 dBu]
[0 dBu]
[0 dBu]
[0 dBu]
[0 dBu]
[+4 dBu]
[-6 dBu]
[+4 dBu]
[0 dBu]
[0 dBu]
INV SUM
INV SUM
INV
USB OUT (L)
USB OUT (R)
USB OUT (L)
USB OUT (R)
USB IN (R)
USB IN (L)
SUM
SUM
AFL MUTE
CTRL
SUM
SUM
SUM
SUM
SUM
INSERT
[0 dBu]
INSERT
[0 dBu]
INSERT
[0 dBu]
INSERT
[0 dBu]
INSERT
[0 dBu]
[-10 dBu]
[+4 dBu]
[+4 dBu]
BA
[-10 dBu]
[-10 dBu]
[0 dBu]
[0 dBu]
[0 dBu]
[0 dBu] [-10 dBu]
[-6 dBu]
[-16 dBu] [+4 dBu]
[0 dBu]
LIN
D-
D+
GND
Vbus
PCM2900
[3 mW 40 ohms]
(Bus Powered)
LO
RO
12 MHz
RIN
[0 dBu]
[0 dBu]
[0 dBu]
BA
BA
BA
BA
DR
PEAK
+10
+6
+3
0
-3
-6
-10
-15
-20
-25
-30
DR
DR
DR
BA
BA
PA
PA
LPF
LPF
LPF
REG
LPF
ON
ON
ON
GROUP
AFL
ST
PAN
MONO
YE
GR
AFL
MONO
G1
G2
G3
G4
G5
G6
G7
L
G8
R
GR
AFL
ST L
ST R
MONO
GR
AFL
ST
MONO
GR
AFL
GR
AFL
MONITOR
PHONES
GR
PFL
YE
PFL
YE
YE
YE
USB
PHONES
USB
AUDIO
GROUP OUT
1–8
[+4 dBu]
MTRX OUT
1–4
R
L
R
L
ST OUT
[+4 dBu]
AUX SEND
1–8
[+4 dB]
[+4 dBu]
MONO OUT
[+4 dBu]
REC OUT
[-10 dBv]
R
L
MONITOR OUT
[+4 dB]
GROUP Fader
[Nominal: -10 dB]
MATRIX
(GROUP, ST, MONO)
[Nominal: 0 dB]
MATRIX
[Nominal: -6 dB]
PHONES
[Nominal: -16 dB] MONITOR
[Nominal: -6 dB]
ST, MONO, AUX Fader
[Nominal: -10 dB]
GROUP
INSERT I/O [0 dBu]
ST, MONO, AUX
INSERT I/O [0 dBu]
GROUP OUT [+4 dBu]
ST OUT, MONO OUT,
AUX SEND [+4 dBu]
MATRIX OUT [+4 dBu] MONITOR OUT [+4 dBu]
PHONES [3mW@40 ohms]