Side-Pin Cushion Distortion; Poor Focus; Sound (For Audio Only) - Tatung VM5ERDA Service Manual

READJUST SIDEPIN FUNCTION VALUE
READJUST FOCUS CONTROL
ADJUST VOLUME CONTROL
OK
ENSURE THE SOUND SOURCE
IS POWER ON
OK
ENSURE THE SOURCE CABLE
CONNECTION

6-7 SIDE-PIN CUSHION DISTORTION

NG

6-8 POOR FOCUS

NG
6-9 NO SOUND (FOR 5EA/5ElrA ONLY)
OK
CHECK IC401, Q404, Q405, Q406
RELATIVE CKT.
CHECK FOCUS CONTROL UNIT, FOCUS
LEAD WIRE, CRT SOCKET & CRT
CHECK IC501
PIN 12 ABOUT 14V
NG
OK
CHECK IC501
NG
OK
SPEAKER FAILURE
CHECK POWER
SUPPLY CIRCUIT
IC501 FAILURE