Sharp SX76NF200 - TROUBLE SHOOTING FLOWCHART; NO VERTICAL SCAN

12
SX76NF200
TROUBLE SHOOTING FLOWCHART
NO VERTICAL SCAN
Check the Voltage at pin(15)(1)
of IC502
Normal approx. 14V
Check IC502 and related circuits
Check D613, D615,
R647 and R646
Check IC4003 and
peripheral parts
Check vertical trigger pulse at
pin(12)(13) of IC502