Yamaha DRX-2 Service Manual page 167

I SCHEMATIC DIAGRAM
UP SUB: Fan Control (FACO)
1301 B4 3915 B3 3922 C1 3929 A4 4902 D3
1901 A4 3916 D1 3923 E1 3930 A4 4903 D3
2911 D1 3917 C1 3924 A2 3931 A4 6901 E3
2912 B3 3918 B2 3925 D1 3932 B4 6902 A1
2913 B4 3919 C1 3926 A2 3933 B4 6903 C3
3913 B2 3920 E1 3927 D2 3934 A4 7902-1 C2
3914 C4 3921 E4 3928 C3 4901 A1 7902-2 D2
1 2
6902
3V3STBY 5VSTBY
STBY
BAT254
from CECO
not used
4901
7903
PDTC124EU
A
FAN_OFF
from CECO
F907
7906 7907
PDTC124EU PDTC124EU
GNDD GNDD
B
GNDD
12VSTBY
GNDD
12VSTBY
C
7902-1
LM324D
I904
3
3922 I903
2
TEMP_SENSE
from CECO
1K0
3927
33K
D
GNDD
12VSTBY
12VSTBY
4
7902-2
5 LM324D
6
GNDD I906
11
E
GNDD
GNDD
1 2
7902-3 C4 7908 B1 F905 A1 I904 C2
7902-4 D4 7909 B4 F906 A2 I905 C2
7903 A1 7910 B3 F907 A2 I906 E2
7904 A3 F901 A4 F908 B4 I907 E4
7905 A3 F902 A4 F909 C3 I908 D1
7906 A1 F903 B4 F910 E3
7907 A2 F904 B4 I903 C2
3 4
1
12VSTBY 1901
MOT
2
GNDD
EH-S
12VSTBY
7904
GNDD
PDTA124EU
7905
PDTC124EU
GNDD
12VSTBY
1301 F904
315mA F
F903
7910
PDTC124EU
3928
GNDD
18K
not used
7902-3
LM324D
10
8
9
1
I905
6903
for SET FAN only
BAV70W
7902-4
LM324D
12
GNDD GNDD
14
13
F910
7
6901
BAV70W
GNDD
3921
I907
BE_FAN
470R to CECO
3 4
FRONT: Standby
1130 C1 3300 B1 F3002 B1
1930 A1 F3001 B1 F3003 B1
1
A
A
Tray_Led
+12VSTBY
B
GND
B
C
C
1
D
E
F3004 B1
I300 B1
2 3
+12VSTBY
1930
F3001
1
F3002
2
F3003
3
K1
F3004
4
DA
not used
GND
GND
2 3
DRX-2
A
B
C
167