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4. NO PICTURE
CHECK
19TH PIN OF I501
ABNORMAL
CHANGE INPUT MODE
RF ->AV ->RF
CHECK SIGNAL AT
CVBS OF TUNER
NORMAL
CHECK / REPLACE
SCL, SDA, B+
OF TUNER
CHECK
HEATER VOLTAGE
-58-
TROUBLE SHOOTING CHART S
CHECK SIGNAL AT R,G,B
OF I501
CHECK / REPLACE
Q502,Q503,Q504,Q505
CHECK SIGNAL AT
R,G,B INPUT AND
R,G,B OUTPUT OF I901 &
12V LINE & 180V LINE
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