17" CDT Color Monitor Lanix LX700R
21
6-2. Abnormal Display
1.No Signal On Screen
CHECK FBT RELATIVE CIRCUIT
LESS THAN 400V
OK
NG
NG
OK
OK
NG
OK
NG
CHECK THE OUTPUT VOLTAGE OF
IC801 PIN 31,32,33ABOUT 3Vpp
CHECK THE B+ VOLTAGE OF
CHECK THE VOLTAGE OF CRT
CATHODE ABOUT 40Vpp
CHECK THE VOLTAGE OF FBT
SCREEN ABOUT 400V TO 700V
CHECK THE RELATIVE CIRCUIT
OFIC801PIN30ABOUT5V, PIN1, 8,17,23,40,42
ABOUT2.5VCIRCUIT
CHECK THE 6.3V PIN OF P803 CONNECTOR
EXCEED 700V
CHECK FBT & CRT RELATIVE
CIRCUIT OR REFER ITEM 6-1
CHECK VIDEO IC801 VCC ABOUT 5V,
2.5V
CHECK THE IC802 RELATIVE CIRCUIT
VIDEO PCB ABOUT 80V
CHECK THE 80V RELATIVE CIRCUIT
OF SMPS ON MAIN PCB
Summary of Contents for LX700R
Page 31: ...17 CDT Color Monitor Lanix LX700R 31...
Page 33: ...17 CDT Color Monitor Lanix LX700R 33 9 PCB Layout 9 1 Main Board...
Page 34: ...17 CDT Color Monitor Lanix LX700R 34...
Page 35: ...17 CDT Color Monitor Lanix LX700R 35 9 2 CRT Board...
Page 38: ...17 CDT Color Monitor Lanix LX700R 38 11 Monitor Exploded View...
