Sony D-V7000 Service Manual page 21

– MAIN Board (2/2) –
IC820 TL5001CD
4 3
REFERENCE
VOLTAGE
SWITCH
ERROR
+
'ON'
AMP
–
AT
'H'
S.C.P.
COMPARATOR 1
COMPARATOR 2
5 6
IC861 TL1453CPW-E20
16 15 14 13
–
+
ERROR AMP 2
REFERENCE
VOLTAGE
VREF
VREF
R
U. V. L. O.
ERROR AMP 1
TRIANGLE
+
OSCILLATOR
–
1 2 3 4
2
U.V.L.O
DEAD-TIME
COMPARATOR
–
OSC
+
–
+
PWM
COMPARATOR
–
S.C.P.
+
LATCH
S.C.P.
7
12 11
OUTPUT 2
PWM
COMPARATOR
2
VREF
OUTPUT 1
PWM
COMPARATOR 1
5 6
1
8
IC862 MC14053BDTR2
B1 1
B0 2
10 9
C1 3
C.COM 4
CO 5
6
INH
7
VEE
VSS 8
7 8
– 37 –
VDD
16
B.COM
15
OPEN
14 A.COM
13
A1
OPEN
A0
12
11
A
10 B
OPEN
9 C