Sharp LC-20AV7U Service Manual page 47

Main CBA Bottom View
CAUTION !
Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.
If Main Fuse (F601) is blown , check to see that all components in the power supply
circuit are not defective before you connect the AC plug to the AC power supply.
Otherwise it may cause some components in the power supply circuit to fail.
WF4
PIN 75 OF
IC1202
WF2
PIN 76 OF
IC1202
WF5
PIN 56 OF
IC1202
WF3
PIN 57 OF
IC1202
WF6
PIN 66 OF
IC1202
WF1
PIN 71 OF
IC1202
WF7
PIN 14 OF
IC801
CAUTION ! : For continued protection against risk of fire,
replace only with same type 4 A, 125V fuse.
4A/125V
ATTENTION : Utiliser un fusible de rechange de même type de 4A, 125V.
NOTE:
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
9-13
NOTE: CBA AND PWB MEANS PRINTED WIRING BOARD.
Because a hot chassis ground is present in the power
supply circuit, an isolation transformer must be used.
Also, in order to have the ability to increase the input
slowly,when troubleshooting this type power supply
circuit, a variable isolation transformer is required.
BA7140F01013-1