CONFIDENTIAL
5 Troubleshooting
GD15N*/GD15A*
5-3
5-3 No Picture (TV, Video 1, Video 2)
Check Pin 8 (AGC)
of IC703 (CN402).
Check replace the tuner.
Yes
No
Check Pin 72, 73, 74 of IC402.
Replace IC402.
Yes
No
Does the signal appear at D405.
Check related circuit of
D405 and replace D405.
Yes
No
Check IC301 and replace mainboard.
Summary of Contents for GD15A Series
Page 7: ...CONFIDENTIAL GD15N GD15A 6 1 6 Exploded View and Parts List ...
Page 9: ...8 Block Diagram GD15N GD15A 8 1 CONFIDENTIAL ...
Page 10: ...CONFIDENTIAL GD15N GD15A 9 1 9 Wiring Diagram ...
Page 13: ...10 Schematic Diagrams 10 2 GD15N GD15A CONFIDENTIAL 1 2 3 ...
Page 15: ...10 Schematic Diagrams 10 4 GD15N GD15A CONFIDENTIAL 4 ...
Page 17: ...10 Schematic Diagrams 10 6 GD15N GD15A CONFIDENTIAL 5 6 7 8 ...
Page 19: ...10 Schematic Diagrams 10 8 GD15N GD15A CONFIDENTIAL 9 10 ...
Page 21: ...10 Schematic Diagrams 10 10 GD15N GD15A CONFIDENTIAL 11 ...
Page 22: ...Memo 9 Wiring Diagram 9 2 GD15N GD15A CONFIDENTIAL ...
Page 23: ...Memo 8 Block Diagrams 8 2 GD15N GD15A CONFIDENTIAL ...
Page 38: ...Memo 7 Electrical Parts List 7 16 GD15N GD15A CONFIDENTIAL ...
Page 39: ...Memo 6 Exploded View Parts List 6 2 GD15N GD15A CONFIDENTIAL ...
Page 43: ...Memo 4 Alignments and Adjustments 4 2 GD15N GD15A CONFIDENTIAL ...
Page 46: ...Memo 3 Disassembly and Reassembly 3 4 GD15N GD15A CONFIDENTIAL ...
Page 51: ...Memo 2 Product Specifications 2 6 GD15N GD15A CONFIDENTIAL ...
