Flow Charts - Samsung SLJ402W - Tantus - 40" Rear Projection TV Service Manual

SAMSUNG PROJECTION TV SERVICE GUIDE
video repair flow chart
video power supply
AP2 pins 3, 6 and 8
pin 3 = 8 volts dc, pin 6 = 12 volts dc
pin 8 = 36 volts dc
"missing"
change power pcb
"8, 12 and 36 volts ok"
CNL01 pins 2, 4 and 6
all pins should measure 3 volts dc
"missing"
change main pcb
LCD drive voltages, CNL03 pins 2, 4, 6 and 8
pin 2 = 8 volts dc, pin 4 = 12 volts dc,
pin 6 = 13.5 volts dc, pin 8 = 15.5 volts dc
"missing"
change power pcb
"8, 12, 13.5 and 15.5 volts ok"
replace LCD control pcb
Last update: 4/18//01
Section 3 - Flow Charts
"3 volts ok"
power repair flow chart
switch detect
switch is closed
AF1 pin 3, 5 volts
"missing"
check or change switch
P803"C" 170 volts dc
"missing"
change power pcb
"P803"C" 170 volts dc ok"
AB1 pin 3, 4 volts dc, after pressing power button
lamp should lite after 5 seconds
"4 volts missing"
change main pcb
"4 volts dc ok"
replace lamp
ballast pcb needs to be replaced
must replace complete optical engine
"5 volts ok"
"lamp ok"