Sony XVM-R75 Service Manual page 45

U1, 601 74HC4053D (DISPLAY Board) (2/3)
1
2Y1
DECODER
2
2Y0
3Y1 3
3Z 4
DECODER
3Y0 5
E 6
LOGIC
LEVEL
CONVERSION
VEE
7
GND 8
U3 TL1451ACPWR (DISPLAY Board) (3/3)
16 15 14 13
VREF
SHORT
CIRCUIT
PROTECTION
COMP
VREF
S R
LATCH
U. Y. LO
TRAINGLE
ERROR AMP
OSC
1 2 3 4
LOGIC
LEVEL
CONVERSION
LOGIC
LEVEL
CONVERSION
DECODER
12 11
ERROR AMP
–
+
+
+
–
PWM
OUTPUT1
COMP
VREF
S
PWM
OUTPUT2
COMP
+
–
5 6
16 VCC
15
2Z
14 1Z
1Y1
13
12
1Y0
11
S1
10 S2
9 S3
10 9
REFERENCE
VOLTAGE
+25V
VREF
7 8
XVM-R75
13