Yamaha Soavo-900SW, Service Manual

Page: 17 / 36

A B C D E F G H
1
2
3
4
5
6
Soavo-900SW
17
■
BLOCK DIAGRAM
See page 21 SCHEMATIC DIAGRAM
See page 22 SCHEMATIC DIAGRAM
XL101
DRIVER
WOOFER
AC IN
XL1
STANDBY/ON
Q6
+
-
-
INPUT1
L
R
OUTPUT
R
L
-
-
+
+
+
6
5
7
-
+
2
3
1
3
2
2
-
+
L.P.F.
6dB/oct
5
6
7
-
+
L.P.F.
12dB/oct
4
3
2
-
+
L.P.F.
12dB/oct
4
3
IC2A
IC1A
IC1B
IC2B
6
7
8
-
+
L.P.F.
12dB/oct
1
IC3A
IC3B
-
+
M
VR2
H-CUT
VR2
MOTOR DRIVER
IC6
POSITION
SEARCH
IC4A
6
7
8
-
+
H.P.F.
12dB/oct
6
4
2
-
+
H.P.F.
12dB/oct
IC4B
IC5A
H.P.F
SELECTOR
8
L.P.F.
6dB/oct
IC5B
IC8
POSITION
SEARCH
M
MOTOR
DRIVER
3
7
VR2
VR1
VR1
VOLUME
PHASE
SELECT
RY3
3
4
2
+
- -
+
IC12A
7
6
8 -
+
L.P.F.
6dB/oct
IC12B
INPUT3
INPUT2
(LFE)
PJ1
PJ2
TE1
MODULATOR
CLOCK 2MHz
DRIVER
DRIVER
MOSFET
Q108
MOSFET
Q109
MOSFET
Q110
MOSFET
Q111
L.P.F
L101
C153
L.P.F
L101
C153
FILTER
FILTER
IC109
IC103
IC102
IC101
FEEDBACK
FILTER
L112
IC110
IC111
REGULATOR
+15D
-15D
+5
-5
PROTECTION
Q116,117,121
A.N.I.C
IC13,14,Q20-22
RY1
+
–
IC17
IC18
REGULATOR
+15D
-15D
+15
-15
POWER
SUPPLY
D27
POWER TRANSFORMER
POWER ON/OFF
SW1
L4
RY2
F1
IC15
IC16
REGULATOR
DRIVER
Q14,15
DRIVER
DRIVER
Q19
Q7
D38
POWER
SUPPLY
T2
REGULATOR
IC11
+5
RESET
CIRCUIT
+B
POWER
SUPPLY
POWER
SUPPLY
D37
DIGITAL
P.C.B.
11 RES
17 PWRY
18 SPRY
26 ERR
25
PH
21,22 M1R,M1F
27
M1A
19,20
HPCA,HPCB
23,24
M2R,M2F
28 M2A
MICROPROCESSOR
IC7
RMT 16
REMOTE
CONTROL
SENSOR
U1
PWS
4
M1L,M2L,M3L
13,14,15
PWG,PWR 1, 2
SW4
IC9
LED
SELECT
IC10
STANDBY/ON, PHASE, B.A.S.S. 1,2,3
PRESET 1,2,3
D5-9,11-13
-
+
PROTECTION
3 DTC
Q16
CLOCK 2MHz
8,9
DIGITAL
MAIN
L/MONO
R
L
R