Yamaha MW10 Service Manual page 48

A B
<Page 1>
IBLOCK DIAGRAM & LEVEL DIAGRAM
MAIN
MIC
[-60 ~ -16dBu]
CH INPUT
LINE
(CH1,CH2)
[-34 ~ +10dBu]
INSERT I/O
[0dBu]
MIC
(CH3/4, CH5/6)
[-60 ~ -16dBu]
ST CH INPUT
(CH3/4, CH5/6)
AC ADAPTOR
PA-10
2A
130°C
ST CH INPUT
(CH7/8, CH9/10)
3 1
2
D01
POWER SW
W01A
BR F01
D02
1 3 F02
RE W01C
2
BL W01B
J:AC 19V x 2
U,V,H,W,B,K,A,O:AC 18.5V x 2
C03
D03
A.GND
+30dBu
+20dBu
CH IN LINE
Gain:Min [+10dBu]
+10dBu
0dBu
-10dBu
CH IN MIC Gain:Min [-16dBu]
-20dBu
-30dBu
CH IN LINE Gain:Max [-34dBu]
-40dBu
-50dBu
CH IN MIC Gain:Max [-60dBu]
-60dBu
C
PHANTOM
+12V
OFF +48V OFF
SW102
Changeable width : ±15dB
ON Lo : 100Hz (Shelving)
ON Mid : 2.5KHz (peaking)
Q101-104
LD102 Hi : 10KHz (shelving)
Q201-204
JK101,201
IC101,201
+12V
[0dBu] OFF IC103
HA
6 7
3-Stage EQ
5 7
(2) (1)
HPF
HPF
VR101, 6
ON
201 IC101,201
Gain Trim
80Hz 12dB/Oct
Lo Mid Hi
[60 ~16dB]
VR102, VR103, VR104,
JK102,202
202 203 204
+12V
JK103,203
[-30 ~ +14dBu]
JK301,401 IC302,402
Gain +30dB IC304,404
[0dBu]
SW301,401
5 7 6 7
HA
OFF 3-Stage EQ
HPF
HA
6
5 7
HPF
Q301-304
6
ON
Q401-404 Gain Trim
IC301,401
VR301,
IC301,401 Lo Mid Hi
[50 ~ 6dBu]
401
L (MONO)
(CH3,CH5)
[-34 ~ +10dBu]
JK302,402 2
2 1
3 1
HA
3-Stage EQ
R VR302, VR303, VR304,
IC302,402
402 403 404
(CH4,CH6)
JK303,403
IC304,404
[-34 ~ +10dBu]
Gain +10dB
IC503,603
[0dBu]
JK501,601
5 7 6
HA 3-Stage EQ
L
(CH7,CH9)
Lo Mid Hi
IC501,601
JK503 1/2
[-10dBu]
JK502,602 1 2
3
HA 3-Stage EQ
R
VR501, VR502, VR503,
(CH8,CH10) 601 602 603
IC503,603
JK503 2/2
IC01
D04
OUT
IN
Regulator +15V
JK702
COM
D05
L
(MONO)
A.GND
IC02
RETURN
JK703
COM
OUT
IN [+4dBu]
Regulator
-15V
R
IC03
2TR IN Gain +7.8dB
OUT
IN
Regulator
+12V (LED)
L
COM
2TR IN
GND(12G) JK701 1/2
[-10dBV]
R
[-7.8dBu]
IC04
D06 Q01 IN OUT
Regulator
+48V (PHANTOM)
COM
ZD01,02 ZD03,04
60V 43V
A.GND
Clip Level Clip Level Clip Level
ST CH LINE IN
Gain:Min [+10dBu]
RETURN [+4dBu]
ST CH MIC IN
CH Level
2TR IN [-10dBV]
Gain:Min [-16dBu]
ST CH IN [-10dBu]
ST CH Level
[Nominal : -6dB]
ST CH LINE IN
Gain:Max [-34dBu]
ST CH MIC IN
Gain:Max [-60dBu]
D E
PEAK(RED)
LD101,201
Gain
CH1~2 +11.6dB
Q105,106
IC202
ST CH3~10 +15.7dB
Q205,206
CH Level
Gain +6dB
PAN [0dBu]
DR
[0dBu] [-6dBu] 2
5 7 [0dBu]
BA SUM
VR107
(3) (1)
,207
Nominal [-6dB]
VR105,205
AUX1 [-6dBu]
6
VR106 Nominal [-6dB]
SUM
PEAK(RED)
,206
LD301,401
AUX2 [-6dBu]
Q305,306
Nominal [-6dB]
DR
Q405,406
ST CH Level
Gain +6dB
[-60dBu] [0dBu]
POWER(GREEN)
BA
5 7 [0dBu]
[0dBu]
Nominal
IC303,
VR307,407 BAL/PAN
[-6dB]
403
Gain
3 1
BA CH1-2 0dB
ST CH3-6 0dB
ST CH7-10 8.3dB
VR305,405
AUX1 RETURN +6dB
2TR IN +6dB
[-14dBu]
Nominal [-6dB]
6
VR306,
SUM
AUX2 406
[-14dBu]
Nominal [-6dB]
IC502,602
2
SUM
ST CH Level
Gain +10dB
[-6dBu]
[0dBu] [0dBu] [-8dBu]
7 5 7
BA
VR506,606
VR504,
Nominal [-10dB] BAL/PAN
604
3 1
BA
1
IC502,602 AUX1
[-14dBu]
Nominal [-6dB]
VR505,605
[-6dBu]
AUX2
[-14dBu]
Nominal [-6dB]
[0dBu]
[-6dBu]
6 7
INV
Nominal [-6dB]
Gain -4dB RETURN
IC702
VR702
Nominal [-6dB]
2
1
INV
TO ST/TO C-R
ST
[0dBu]
[-6dBu]
6 7 C-R
SUM
ST
2TR IN
IC701 VR701
C-R
2 1
SUM SW701
ST
Nominal [-6dB] C-R
USB Gain -4dB
ST
C-R
Clip Level
Clip Level
CH AUX [Nominal : -6dB]
RETURN
ST CH 7/8-9/10
2TR IN
[-7.8dBu] ST CH AUX
[Nominal : -6dB]
[Nominal : -6dB]
ST CH AUX SEND [+1dBu]
Note:
The level display and the level diagram in the block diagram are the values in the folloowing.
Level VR : Nominal
BAL/PAN : Max(each channel)
F G
1 [+4dBu]
IC801
7 [+4dBu]
PEAK(RED)
LD801
+12V
+12V IC803
LD802-812
Q801,802
+12V
DR LED METER(GREEN,YELLOW)
+12V
16 2-5
PEAK(RED)
8 17-23
LD825
DR ST L
LD813
+12V Mater 11-Point & PEAK
+12V
+5/+3/+1/0/-1/-3/-5/-7/-10/-15/-20dB
Q803,804
0dB: +4dBu
+12V
DR
2-5
16
17-23
8
DR ST R
Gain +10dB
ST
IC805
[0dBu] [-6dBu]
LD814-824
7 5 7 [+4dBu]
BA
IC802 VR801 IC804
3 1
1
BA
Nominal [-6dB]
Gain +10dB C-R/PHONES Gain +24dB
[-20dBu]
6 7 [+4dBu] [-4dBu] 5 7
INV BA
IC807
VR802 IC806
3 1
2 1
INV BA
Nominal [-16dB]
IC103
2 1
LPF
[+4dBu]
IC101-28P
Gain -20dB
fc 24KHz, 12dB/oct 2
LI
12
USB
6 7
LPF 1
AUDIO
RI
13
IC103
+15V
+15V
4,
PCM2900
LO
IC104 26
16
(BUS-
10
-15V -15V RO Powered)
LPF 15
2
1
3
20 21
Gain +20dB
fc 24KHz, 12dB/oct
[+4dBu]
LPF 12MHz
7 6
IC104
Clip Level Clip Level
AUX SEND [+4dBu] ST OUT [+4dBu]
CR OUT [+4dBu]
AUX SEND
PHONES
REC OUT [-10dBv]
[Nominal : -6dB]
[3mW@40 ]
[-7.8dBu]
C-R/PHONES
[Nominal : -16dB]
28CA1-2000010490
H
MW10
1
JK804
AUX 1 (PRE)
SEND
JK805 [+4dBu]
AUX 2
2
PEAK: +17dBu
JK802
L
ST OUT
JK803
[+4dBu]
R
L
3
REC OUT
JK701 1/2
[-10dBV]
[-7.8dBu]
R
JK806
L
C-R OUT
JK807
[+4dBu]
R
JK808
PHONES
[3mW @40 ]
4
USB
JK101
2 1
D-
3 4
D+
GND
3.7V
IC102
REG
Vbus
USB
+30dBu
+20dBu
+10dBu
0dBu
5
-10dBu
-20dBu
-30dBu
-40dBu
-50dBu
-60dBu
6