Service manual

51
DV-L70S
DV-L70BL
DV-L70W
9-28. IC9001 TL1451AC
Trlangle
Oscillator
Vref=2.5V
+
-
+
+
-
(16)
(15)
(9)
(1) (2)
(7)
(10)
(8)(11)(6)
(3)
(4)
(5)
(12)
(14)
(13)
Error Amp1
VCC
2.0V
1.4V
+2.5V
Vref/2
Vref Vref Vref
+
-
Reference
Voltage
R
U.V.L.O.
RS
Latch
Output1
Output2
Error Amp2
PWM Comprator1
PWM Comprator2
GND
Short Circuit
Protection
Comparator