17" CDT Color Monitor Lanix LX700R
19
6. Trouble Shooting Chart
6-1. No Raster
1.CRT Relative Circuit Problems
REFER ITEM S.M.P.S
.
BRIGHTNESS SET TO MAX. THEN
CHECK CRT G1 VOLTAGE
NG
NG
NG
NG
NG
OK
OK
OK
OK
OK
CHECK THE HIGE VOLTAGE OF CRT
ABOUT 21 ~ 22KV
CHECK THE VOLTAGE OF CRT
HEATER ABOUT 6.3V
CHECK VOLTAGE OF THE CRT
CHECK BRIGHTNESS CIRCUIT
OK
CHECK POWER SAVING CIRCUIT,
H-SYNC, V-SYNC SIGNAL
Q901
"ABNORMAL DISPLAY"
CHECK SCREEN VOLTAGE ABOUT
500V TO 600V
LESS THAN 300V
CHECK FBT
CHECK MAIN PCB POWER SUPPLY
133V, 12.3V, -12.3V,6.3V
CHECK FAILSAFE CKT IC401
CHECK CRT'S HEATER RELATIVE
CIRCUIT D954, L953, L806
Q407,ZD402,R432,R433,D413RELA
TIVE CKT.
PIN 25 RELATIVE CKT
.
REFER ITEM 6-2
CATHODE ABOUT 55V TO 65V
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...
