Sharp LC-22DV510E - DVD Problems; No Signal Problem

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LC-22DV510
LC-24DV510
26.10. DVD Problems
Problem: DVD is not working.
Check that DVD source is selected in Service menu. Check supply voltage of DVD namely 12V_VCC.
26.11. No Signal Problem
Problem: No signal in TV mode.
Check tuner supply voltage; 5V_TUN. Check tuner options are correctly set in Service menu. Check AGC
voltage at RF_AGC pin of tuner.
26.10 DVD Problems
26.11 No Signal Problem