Philips MRV640 Service Manual page 94

Circuit Diagrams and PWB Layouts
UP Sub Board: Fan Control (FACO)
1301 B4 3915 C3 3922 C1 3929 A4
1901 A4 3916 D1 3923 E1 3930 A4
2911 D1 3917 C1 3924 A2 3931 A4
2912 B3 3918 B2 3925 D1 3932 B4
2913 B3 3919 C1 3926 A2 3933 B4
3913 B2 3920 E1 3927 D2 3934 A4
3914 C4 3921 E4 3928 C3 4901 A1
1
6902
3V3STBY 5VSTBY
STBY
from CECO BAT254
not used
4901
A
PDTC124EU
7903
FAN_OFF
from CECO
F907
7906
PDTC124EU
GNDD
B
GNDD
12VSTBY
12VSTBY
C
I904
3
3922 I903
2
TEMP_SENSE
from CECO
1K0
3927
33K
D
GNDD
12VSTBY
12VSTBY
5
6
GNDD I906
E
GNDD
GNDD
1
DVDR615, MRV640
4902 D3 7902-2 D2 7907 A2 F904 B4
4903 D3 7902-3 C4 7908 B1 F905 A1
4904 B4 7902-4 D4 7909 B4 F906 A2
6901 E3 7903 A1 7910 B3 F907 A1
6902 A1 7904 A3 F901 A3 F908 B4
6903 C3 7905 A3 F902 A3 F909 C3
7902-1 C2 7906 A1 F903 B4 F910 E3
2 3
1
12VSTBY 1901
2
7904
PDTA124EU
EH-S
GNDD
7905
PDTC124EU
7907
PDTC124EU
GNDD
12VSTBY
1301
GNDD
315mA F
not used
4904
F903
7910
PDTC124EU
3928
18K
not used
GNDD
GNDD
7902-3
LM324D
10
8
9
7902-1
LM324D
1
I905
for SET FAN only
6903
BAV70W
GNDD GNDD
4
7902-2
LM324D
F910
7
6901
11
BAV70W
GNDD
I907
2 3
7. EN 94
I903 C2
I904 C2
I905 C2
I906 E2
I907 E4
I908 D1
4
MOT
GNDD
12VSTBY
A
B
F904
7909
BC636
C
D
7902-4
LM324D
12
14
13
E
3921
BE_FAN
470R to CECO
TR 18012_001
150304
4