Philips MCM906 - Prepositive Board Circuit

Prepositive Board -- Circuit Diagram
6-1 6-1
D7-10
IN4007X4
LIN
RIN
OUT GND IN
U1
LM7812
C2
2200u/25V
1
2
3
4
5
CN3
2.5/5P
180V~
0V~
~12V0
~12V
R50*
0.47/0.5W
2
2
3
3
1
1
4
4
5
5
Q1A
12AX7
7
7
8
8
6
6
9
9
Q1B
12AX7
R24*
47K/0.5W
R27*
47K/0.5W
R23*
10K0.5W
C5
223/100V
C6
100uF/350V
+VDD
R2*
0.47/0.5W
R22*
0.47/0.5W
D2
4001
D3 4001
C3
104
+12V
R58
330K/0.5W
C12
104 J/450V
+12V
R54
8.2K0.25W
R25
47K/ 0.25W
R56
3.3K/0.5W
C10
5P
R51
47K 0.25W
R60
150K/0.5W
R62
560 0.5W
R64
330K/0.5W
C14
1uF/450V
C16
1uF/250V
Q2A
12AX7
Q2B
12AX7
R59
330K/0.5W
C13
104 J/450V
+12V
R55
8.2K 0.25W
R28
47K/ 0.25W
R573.3K/0.5W
C11
5P
R61
150K/0.5W
R63
560 0.5W
R65
330K/0.5W
C15
1uF/450V
C17
1uF/250V
R52
47K 0.25W
GND
GND
+VCC
C9
100uF/400V
R31
1K
R37
680
R67
47K0.25W
R66
3.3K0.25W
R69
47K0.25W
R68
3.3K0.25W
OUT-L
OUT-R
OUT-L
OUT-R
LIN
RIN
R1
470K
Q3
9014
C1
330uF/16V
D1
4148
1 2 3 4
CN1
3P
+12V
GND
1
2
3
4
5
6
7
CN2
7P/2.0
GND
VCC
Q4
9014
Q6
B772
STANDBY
R6
10K
R7
1K
COM
胆灯丝供电
STANDBY
R8
0
LED1
LED2
R3
680
LED-
1
2
CN8
2P
1
2
CN7
2P
+12V
LED