Samsung Electronics
6-4
6-4 No Video Signal
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
See "Blue - background not shown"
check for video
signal at PIN 70
of VIC 1
check for video
signal at emitter
of VQ1
check for DIGITAL
signal at PIN 48 THRUY
PIN 55 of VIC 2
check for V-sync signal
at PIN 39 of VIC 1
Replace VIC 1
Replace VQ1
Replace VIC3
check for IRQ signal
at PIN 90 of VIC 2
Replace VIC 2
check for HREF,PBHD
signal at
PIN 41,43 of VIC 2
See "LD DOES NOT PLAY"
Troubleshooting
Содержание DV7720KV
Страница 21: ...Samsung Electronics 5 2 5 1 Adjustment Point Location Alignment and Adjustment ...
Страница 150: ...Samsung Electronics 8 1 8 Block Diagram ...
Страница 151: ...Samsung Electronics 9 1 9 PCB Diagram 9 1 Front Top DV7720KV ...
Страница 152: ...Samsung Electronics 9 2 PCB Diagram 9 2 Front Top DV4720KV ...
Страница 153: ...Samsung Electronics 9 3 PCB Diagram 9 3 Video cd 9 4 1 Top view 9 4 2 Bottom view ...
Страница 154: ...Samsung Electronics 9 4 PCB Diagram 9 3 Main ...
Страница 155: ...Samsung Electronics 9 5 PCB Diagram ...
Страница 156: ...Samsung Electronics 9 6 PCB Diagram 9 5 Power ...
Страница 157: ...Samsung Electronics 9 7 PCB Diagram 9 6 Deck ...
Страница 158: ...Samsung Electronics 9 8 PCB Diagram 9 7 Deck 9 8 Deck ...
Страница 159: ...Samsung Electronics 10 1 10 Wiring Diagram Fig 10 1 Wiring Diagram DV7720KV DV4720V ...
Страница 160: ...Samsung Electronics 10 2 Wiring Diagrams Fig 10 2 Wiring Diagram DV7700KV DV4700V ...
Страница 161: ...Samsung Electronics 11 1 Schematic Diagrams 11 Schematic Diagram 11 1 Front ...
Страница 162: ...Samsung Electronics 11 2 Schematic Diagrams 11 2 Main 1 4 Servo Section ...
Страница 163: ...Samsung Electronics 11 3 Schematic Diagrams 11 3 Main 2 4 LD Video Section ...
Страница 164: ...Samsung Electronics 11 4 Schematic Diagrams 11 4 Main 3 4 Audio Section ...
Страница 165: ...Samsung Electronics 11 5 Schematic Diagrams 11 5 Main 4 4 Syscon Section ...
Страница 166: ...Schematic Diagrams 11 Ð 6 Samsung Electronics 11 6 Video CD ...
Страница 167: ...Samsung Electronics 11 7 Schematic Diagrams 11 8 Power DV 7620KV DV 7622KV ...