Abnormal Horizontal Deflection - Tatung VM5ERDA Service Manual

1. ABNORMAL HORIZONTAL SIZE
READJUST H-SIZE FUNCTION
OK
CHECK FBT VOLTAGE ABOUT
88V AT FH=31KHz
CHECK THE HV OF CRT
ABOUT 24.5KV
2. ABNORMAL HORIZONTAL RASTER CENTER
CHECK D418, D419, R457, R458, L404
3. ABNORMAL HORIZONTAL VIDEO CENTER
SET H-CENTER TO CENTER
4. ABNORMAL HORIZONTAL LINEARITY
CHECK L401, Q407, Q408, Q410
& DY, IC101 PIN 28(CSO)

6-5 ABNORMAL HORIZONTAL DEFLECTION

NG
NG
CHECK THE RELATIVE CIRCUIT
OF Q404, Q405, & Q406
CHECK THE RELATIVE
CIRCUIT OF SMPS.
CHECK IC401 PIN 4, 7
RELATIVE CIRCUIT