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Main PCB Trouble Diagnosis
If above signals do not appear, replace MAIN PCB.
4. When PC signal do not appear on screen
(1) Input DTV or VIDEO signal and see if DTV or VIDEO images are displaying.
If “No signal”, check TP188, 184 and 187.
If TP188, 184 and 187 signal do not appear, replace MAIN PCB.
(2) Check TP124 (V SYNC), TP125 (H SYNC) (when 800 X 600).
(4) With Component inputs
Check TP136(V sync), TP135(H sync)
If signals do not appear, replace MAIN PCB.
3. When DTV (1080i, 720P, 480P) signal do not appear on screen
(1) Input PC or VIDEO signal and see if PC or VIDEO images are displaying.
If “no signal”, check TP188, 187 and 184.
If DCLKB, DHS and DVS signal do not appear, replace MAIN PCB.
(2) Check TP136(V sync), TP135(H sync) <when 1080i >
Summary of Contents for DPN-4274NHS
Page 15: ...14 3 BLOCK DIAGRAM...
Page 16: ...15 4 Description of A V MAIN and SUB PCB and POWER 4 1 Block Diagram of main IC and TP...
Page 43: ...42 Main PCB Trouble Diagnosis If above signal do not appear replace MAIN PCB...
Page 55: ...54 11 STRUCTURE OF PDP SET...
Page 58: ...57 COMPONENTS PICTURE REMARK 1h Digital PKG 2 MAIN BOARD 3 SUB BOARD 4 POWER BOARD...
Page 59: ...58 STRUCTURE OF PDP SET COMPONENTS PICTURE REMARK 5 FRONT MASK 6 FILTER GLASS 7 BACK COVER...
Page 60: ...59...
Page 61: ......
