Yamaha EQ-630 Service Manual page 10

Stereo graphic equalizer
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--,
R ch
--,
L ch
IC405
8UFFER
RAO
MUTE
/
R50~53
-
R92-
M2
M4
M6
M8
ME~~
EO
EO
7' r 7
R60.... 63
REC
ON/OFF
EO
PEAK
IC401
-R42-
M1
M3
M5
M7
TAPE
SOURCE
ANALYZE
CURVE HOLD REVERS
)J -
CO M
-R41-
11
12
13
14
15
16
17
18
19
110
R40",R42
(30Hz) 160Hz) (120Hz) (240Hz) (480Hz) (1kHz) (2kHz) (4kHz) (8kHz) (16kHz) UP(+)KEY
Bock up
I
R70'" R92
-R40-
11
12
13
14
15
16
f7
1 S
19
110
OOWN(-)KEY
SA .1
I
....c--
-R91-
11
12
13
14
15
16
17
IS
19
110
UPI+IKEY
~
-R90-
11
12
13
14
15
16
17
IS
19
110
OOWN{- )KEY
I
I
RS3
R
1
S2
R~1
R1SO
R~2
R~O
01
DO
R73
R71
I
I
I
I
I
I
I
I
I
I
01,00
R70"-73
RSO"'S3
05
06
07
IC406
Remote
Recepter
I~
~~
~I
~
LCD
DRIVER
~
04,5
IC402
f-----
LC 0
401
-
---1
RESET
I
-
r-----------l
LCD
-
DRIVER
-
I C404
+5.6V
-
MUT
I
-
LCD
_1
DR IVER
LCD
+15V
POWER
POWER SW
402
SUPPLY
Sl
r----
01---06
IC403
+SV
07
06,7
IC1S
3C=D=
-15V
IC5
-SV
OS
BAND LEVEL
CONTROL
--
-,
I
f---
I
. __ ...J
]
9

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