Specifications

17" CDT Color Monitor AOC FT720
15
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
N
G
N
G
N
G
N
G
N
G
O
K
O
K
O
K
O
K
O
K
CHECK THE HIGE VOLTAGE
CHECK THE VOLTAGE OF CRT
HEATER ABOUT 6.3V
CHECK VOLTAGE OF THE CRT
CHECK BRIGHTNESS CIRCUIT
O
K
CHECK POWER SAVING CIRCUIT,
"ABNORMAL
H-SYNC, V-SYNC SIGNAL
CHECK SCREEN VOLTAGE ABOUT
LESS THAN 300V
CHECK FBT
CHECK MAIN PCB POWER SUPPLY
CHECK FAILSAFE CKT IC401
Q
909,
Q
907
CHECK CRT'S HEATER RELATIVE
CIRCUIT Q907, Q908
Q705 RELATIVE CKT.
PIN 25 RELATIVE CKT.
OF CRT ABOUT 24.5 ~ 25.5KV
400V TO 600V
REFER ITEM 6-2
53V, 14.5V, 80V
CATHODE ABOUT 55V TO 65V
CHECK BRIGHTNESS CIRCUIT
Q705 RELATIVE CKT.
英华家电维修资料专用 QQ:505966338