Yamaha DRX-1 Service Manual page 159

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A
B
1
SCHEMATIC DIAGRAM
ANALOG: FAN CONTROL
1983 B5
2985 A3
3948 C3
3974 E1
1984 C5
3940 C4
3967 A3
3975 E2
2970 C2
3941 D4
3968 A3
3976 E2
2
2980 A2
3942 A1
3969 A4
3977 A2
2981 A2
3943 C1
3970 D2
3978 A5
2982 B3
3944 B1
3971 E1
3979 B4
2983 D4
3946 A1
3972 C3
3980 D3
2984 D1
3947 A4
3973 E2
3981 E4
1
2
Fan Control
12STBY
3
A
12STBY
I932
3946
GNDD
GNDD
2K2
3942
SW_CAB_FAN
6
from AIO1
22K
I920
7973
5SW
BC847BW
5
B
GNDD
for SW contr. only
4
7975
6970
BSH111
3944
12STBY
MCL4148
220K
6972
ION_FAN
3943
from AIO1
MCL4148
10K
7974
BC847BW
C
12STBY
3948
delete for SW contr.
GNDD
5
I927
LM324D
12
4
7970-D
14
I928
13
D
11
12STBY
I923
3970
220K
GNDD
GNDD
LM324D
6
10
4
7970-C
I926
3973
9
TEMP_SENSE
11
E
F807
1K
from AIO1
3976
GNDA
GNDD
82K
7
1
2
C
D
U model
3982 E3
3996 A4
7970-C E3
F806 C5
I924 E3
3983 E3
3997 A5
7970-D D2
F807 E1
I925 C3
3984 E5
4905 B4
7971 B5
F813 B5
I926 E2
3985 C1
6970 B3
7972 C5
F814 C4
I927 D1
3987 C4
6971 B4
7973 B1
I920 A2
I928 D1
3988 E1
6972 C3
7974 C1
I921 A3
I929 C3
3989 D5
7970-A E4
7975 B2
I922 A4
I930 E4
3991 D1
7970-B B3
F805 B5
I923 D2
I931 D5
3
4
5
FACO
3967
3968
3969
3996
10R
10R
10R
10R
12STBY
for SW contr. only
2985
I921
10n
5SW
12STBY
11
I922
3979
BC636
7
7971
1K
7970-B
4
LM324D
F805
F813
12STBY
I925
1984
1
MOT
F814
F806
2
GNDD
GNDD
GNDD
EH-B
for SW contr. only
7972
I929
3980
3941
BC847BW
I931
from AIO1
33K
22K
3989
ION_FAN
delete for
SW contr.
10K
from AIO1
SW_BE_FAN
GNDD
GNDD
12STBY
12STBY
7970-A
3
4
LM324D
I930
3984
1
BE_FAN
8
I933
1K
to AIO1
2
11
GNDD
3981
GNDD
15K
TEMP
I924
to AIO1
3
4
5
E
F
I932 A1
I933 E3
A
B
C
D
E
G
H
I
J
DRX-1
159

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