Dell E773c Series - Page 18

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6-5 ABNORMAL HORIZONTAL DEFLECTION
1. ABNORMAL HORIZONTAL WIDTH OF VIDEO
NG
OK
CHECK THE RELATIVE CIRCUIT
OF Q404, Q405, & Q406
CHECK THE RELATIVE
CIRCUIT OF SMPS.
READJUST H-WIDTH FUNCTION
CHECK THE HV OF
CRT ABOUT 24.5KV
CHECK FBT B+ VOLTAGE
A
BOUT 62V AT FH=31KHz
NG
OK
2. ABNORMAL HORIZONTAL VIDEO CENTER
3. ABNORMAL HORIZONTAL LINEARITY
CHECK IC401 PIN5,12
RELATIVE CIRCUIT
CHECK L401 AND C430 OR R456
RELATIVE CIRCUIT