Service manual

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• Case 1: Buffer IC fail
COF IC 1,2
⇒
192 line(96+96) open.
COF IC 3,4
⇒
64 line open (with fixed interval there is on,off ……. Repetition)
• case 2 : Array resistor fail
COF IC1
⇒
16 line , COF IC2
⇒
16 line open
• case3 : COF IC fail
96 line open.
line defect from each parts
4. Trouble shooting.
96 line open
16 line open