Toshiba TDP-SW20 Service Manual page 85

Troubleshooting Image Problems
No Image at all.
Doesn't CW rotate
at all after
power on?
No
Does 1pin of
IC129 remain Hi-
level ?
No
Is IC131 hot
abnormally ?
No
Replace IC116.
Is image OK ?
No
Replace IC106.
Is image OK ?
No
Replace the MAIN board.
Yes
Replace IC130.
Is image OK ?
Yes
Replace the CW board.
Is image OK ?
No
Yes
Replace IC131.
Is image OK ?
No
Yes
Problem resolved.
Yes
Problem resolved.
Yes
Problem resolved.
Yes
Problem resolved.
Yes
Problem resolved.
85