LG FPD1570 Service Manual page 15

NO RASTER
CHECK
J4 PIN 10
(24V) ?
YES
CHECK
J4 PIN 5 (5V) ?
YES
CHECK
U4 PIN 42
H. PULSE ?
YES
CHECK
U5 PIN 117
H.PULSE?
YES
CHECK
U5 PIN 115
AD CLOCK ?
YES
2. NO RASTER
NO
NO
NO
NO
NO
TROUBLE IN
POWER ADATER
TROUBLE IN
INON PATTERN
TROUBLE IN
U106, U105, U101,
U109
TROUBLE IN
U5
TROUBLE IN
U5