JVC RX-DV31SL Service Manual page 42

6.19MM1563DF-X (IC615) : Regulator
• Pin layout
7
(TOP VIEW)
1
• Block diagram
• Pin function
Pin No. Symbol
1 Vo Output pin
2 NC Not connect
3 GND Ground
4 Cn Noise decrease pin
5 CONT Control pin
6 Sub Substrate pin, The 6pin must be connected to GND.
7 VIN Input pin
6.20 MM74HCU04SJ-X (IC621) : Inverter
• Pin Layout
1A 1
1Y 2
2A 3
2Y 4
3A 5
3Y 6
GND 7
1-42 (No.22023)
6 5
2 3 4
V
IN 7
Bias
Cont
5
Thermal
shutdown
GND
3
Function
CONT Output
H ON
L OFF
14 VCC
13 6A
12 6Y
11 5A
10 5Y
9 4A
8 4Y
Current
Driver Reference
limiter
4
Cn
• Truth table
A Y
L H
H L
Vo
1