Acer AC511 SERIES Servicehandleiding - Pagina 19

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Acer AC511 SERIES Servicehandleiding

6-8 POOR FOCUS

READJUST FOCUS CONTROL
CHECK FOCUS CONTROL UNIT,
NG
FOCUS LEAD WIRE, CRT SOCKET & CRT
6-9 NO SOUND (OPTIONAL WITH AUDIO ONLY)
CHECK IC501
ADJUST VOLUME CONTROL
PIN 14 ABOUT 14V
OK
NG
CHECK POWER
SUPPLY CIRCUIT
ENSURE THE SOUND SOURCE
OK
IS POWER ON
CHECK IC501
OK
NG
IC501 FAILURE
ENSURE THE SOURCE CABLE
OK
CONNECTION
OK
SPEAKER FAILURE
18