Compaq CRT Monitor s7500 - TILT;ROTATION TROUBLESHOOTING

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10. NO TILT (NO ROTATION)
NO TILT (NO ROTATION)
TROUBLE IN
IC401 (
MICOM)
TROUBLE IN
15V LINE, 6.3V LINE
TROUBLE IN
Q501~Q503
TROUBLE IN
P501, TILT COIL, D521
NO
YES
YES
YES
CHECK
15V LINE
AND 6.3V LINE ?
CHECK
Q503 EMITTER
VOLTAGE ?
NO
NO
CHECK
IC401 PIN21
WAVE FORM ?