NAD T748 - Display Part Troubleshooting

* T748 DISPLAY PART TROUBLESHOOTING
ONON
KOKO
G.NG.N
KOKO
NO LED LIGHT UP
IS THE POWER
CORD
CONNECTED?
PLUG THE POWER
CORD INTO THE
WALL OUTLET
SECURELY
CHECK AT
CN501 PIN15
"H"
CHECK POWER
SUPPLY CIRCUIT
CHECK HOST
MCU(IC101) PART
CHECK & REPLACE
LED(D5032) or
Q5031 Q5032 Q5033
NO DISPLAY ON VFD
CHECK AT
CN502 PIN1,
PIN3, PIN5
CHECK POWER
SUPPLY CIRCUIT
CHECK AT
FIP51 PIN1~2,
58, 61~62
CHECK OPEN
CIRCUIT or SHORT
CIRCUIT
CHECK & REPLACE VFD
CHECK
&
REPLACE
LED(D5032) or
Q5031,Q5032,Q5033,
Q5036,Q5037
CHECK & REPLACE VFD
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