Sharp XV-Z12000 - Page 39

39
XV-Z12000
YES
YES
YES
No horizontal synchronization is being supplied from the
external synchronization input. This is not normal.
Is the terminal input
connection as specified? Is
the cable tightly
connected?
Check the line between
IC2506 and IC2509.
Check the line between
IC2506 and the input
terminal.
NO
NO
Is there the horizontal sync
pulse at pin (14) of
IC2506?
NO
Use the specified cable.
Reconnect it tight enough.
Is there the horizontal
sync pulse at pin (11) of
IC2509?
Go to "PC Board
Troubleshooting".
YES
YES
YES
No vertical synchronization is being supplied from the
external synchronization input. This is not normal.
Is the terminal input
connection as specified? Is
the cable tightly
connected?
Check the line between
IC2506 and IC2509.
Check the line between
IC2501 and the input
terminal.
NO
NO
Is there the vertical sync
pulse at pin (14) of
IC2501?
NO
Use the specified cable.
Reconnect it tight enough.
Is there the vertical sync
pulse at pin (8) of
IC2509?
Go to "PC Board
Troubleshooting".